/**
 * commands.js
 * Command-line interface for the Task Master CLI
 */

import { program } from 'commander';
import path from 'path';
import chalk from 'chalk';
import boxen from 'boxen';
import fs from 'fs';
import https from 'https';
import http from 'http';
import inquirer from 'inquirer';
import search from '@inquirer/search';
import ora from 'ora'; // Import ora

import {
	log,
	readJSON,
	writeJSON,
	findProjectRoot,
	getCurrentTag,
	detectCamelCaseFlags,
	toKebabCase
} from './utils.js';
import {
	parsePRD,
	updateTasks,
	generateTaskFiles,
	setTaskStatus,
	listTasks,
	expandTask,
	expandAllTasks,
	clearSubtasks,
	addTask,
	addSubtask,
	removeSubtask,
	analyzeTaskComplexity,
	updateTaskById,
	updateSubtaskById,
	removeTask,
	findTaskById,
	taskExists,
	moveTask,
	migrateProject,
	setResponseLanguage
} from './task-manager.js';

import {
	createTag,
	deleteTag,
	tags,
	useTag,
	renameTag,
	copyTag
} from './task-manager/tag-management.js';

import {
	addDependency,
	removeDependency,
	validateDependenciesCommand,
	fixDependenciesCommand
} from './dependency-manager.js';

import {
	isApiKeySet,
	getDebugFlag,
	getConfig,
	writeConfig,
	ConfigurationError,
	isConfigFilePresent,
	getAvailableModels,
	getBaseUrlForRole,
	getDefaultNumTasks,
	getDefaultSubtasks
} from './config-manager.js';

import { CUSTOM_PROVIDERS } from '../../src/constants/providers.js';

import {
	COMPLEXITY_REPORT_FILE,
	PRD_FILE,
	TASKMASTER_TASKS_FILE,
	TASKMASTER_CONFIG_FILE
} from '../../src/constants/paths.js';

import {
	displayBanner,
	displayHelp,
	displayNextTask,
	displayTaskById,
	displayComplexityReport,
	getStatusWithColor,
	confirmTaskOverwrite,
	startLoadingIndicator,
	stopLoadingIndicator,
	displayModelConfiguration,
	displayAvailableModels,
	displayApiKeyStatus,
	displayAiUsageSummary,
	displayMultipleTasksSummary,
	displayTaggedTasksFYI,
	displayCurrentTagIndicator
} from './ui.js';
import {
	confirmProfilesRemove,
	confirmRemoveAllRemainingProfiles
} from '../../src/ui/confirm.js';
import {
	wouldRemovalLeaveNoProfiles,
	getInstalledProfiles
} from '../../src/utils/profiles.js';

import { initializeProject } from '../init.js';
import {
	getModelConfiguration,
	getAvailableModelsList,
	setModel,
	getApiKeyStatusReport
} from './task-manager/models.js';
import {
	isValidTaskStatus,
	TASK_STATUS_OPTIONS
} from '../../src/constants/task-status.js';
import {
	isValidRulesAction,
	RULES_ACTIONS,
	RULES_SETUP_ACTION
} from '../../src/constants/rules-actions.js';
import { getTaskMasterVersion } from '../../src/utils/getVersion.js';
import { syncTasksToReadme } from './sync-readme.js';
import { RULE_PROFILES } from '../../src/constants/profiles.js';
import {
	convertAllRulesToProfileRules,
	removeProfileRules,
	isValidProfile,
	getRulesProfile
} from '../../src/utils/rule-transformer.js';
import {
	runInteractiveProfilesSetup,
	generateProfileSummary,
	categorizeProfileResults,
	generateProfileRemovalSummary,
	categorizeRemovalResults
} from '../../src/utils/profiles.js';

/**
 * Runs the interactive setup process for model configuration.
 * @param {string|null} projectRoot - The resolved project root directory.
 */
async function runInteractiveSetup(projectRoot) {
	if (!projectRoot) {
		console.error(
			chalk.red(
				'Error: Could not determine project root for interactive setup.'
			)
		);
		process.exit(1);
	}

	const currentConfigResult = await getModelConfiguration({ projectRoot });
	const currentModels = currentConfigResult.success
		? currentConfigResult.data.activeModels
		: { main: null, research: null, fallback: null };
	// Handle potential config load failure gracefully for the setup flow
	if (
		!currentConfigResult.success &&
		currentConfigResult.error?.code !== 'CONFIG_MISSING'
	) {
		console.warn(
			chalk.yellow(
				`Warning: Could not load current model configuration: ${currentConfigResult.error?.message || 'Unknown error'}. Proceeding with defaults.`
			)
		);
	}

	// Helper function to fetch OpenRouter models (duplicated for CLI context)
	function fetchOpenRouterModelsCLI() {
		return new Promise((resolve) => {
			const options = {
				hostname: 'openrouter.ai',
				path: '/api/v1/models',
				method: 'GET',
				headers: {
					Accept: 'application/json'
				}
			};

			const req = https.request(options, (res) => {
				let data = '';
				res.on('data', (chunk) => {
					data += chunk;
				});
				res.on('end', () => {
					if (res.statusCode === 200) {
						try {
							const parsedData = JSON.parse(data);
							resolve(parsedData.data || []); // Return the array of models
						} catch (e) {
							console.error('Error parsing OpenRouter response:', e);
							resolve(null); // Indicate failure
						}
					} else {
						console.error(
							`OpenRouter API request failed with status code: ${res.statusCode}`
						);
						resolve(null); // Indicate failure
					}
				});
			});

			req.on('error', (e) => {
				console.error('Error fetching OpenRouter models:', e);
				resolve(null); // Indicate failure
			});
			req.end();
		});
	}

	// Helper function to fetch Ollama models (duplicated for CLI context)
	function fetchOllamaModelsCLI(baseURL = 'http://localhost:11434/api') {
		return new Promise((resolve) => {
			try {
				// Parse the base URL to extract hostname, port, and base path
				const url = new URL(baseURL);
				const isHttps = url.protocol === 'https:';
				const port = url.port || (isHttps ? 443 : 80);
				const basePath = url.pathname.endsWith('/')
					? url.pathname.slice(0, -1)
					: url.pathname;

				const options = {
					hostname: url.hostname,
					port: parseInt(port, 10),
					path: `${basePath}/tags`,
					method: 'GET',
					headers: {
						Accept: 'application/json'
					}
				};

				const requestLib = isHttps ? https : http;
				const req = requestLib.request(options, (res) => {
					let data = '';
					res.on('data', (chunk) => {
						data += chunk;
					});
					res.on('end', () => {
						if (res.statusCode === 200) {
							try {
								const parsedData = JSON.parse(data);
								resolve(parsedData.models || []); // Return the array of models
							} catch (e) {
								console.error('Error parsing Ollama response:', e);
								resolve(null); // Indicate failure
							}
						} else {
							console.error(
								`Ollama API request failed with status code: ${res.statusCode}`
							);
							resolve(null); // Indicate failure
						}
					});
				});

				req.on('error', (e) => {
					console.error('Error fetching Ollama models:', e);
					resolve(null); // Indicate failure
				});
				req.end();
			} catch (e) {
				console.error('Error parsing Ollama base URL:', e);
				resolve(null); // Indicate failure
			}
		});
	}

	// Helper to get choices and default index for a role
	const getPromptData = (role, allowNone = false) => {
		const currentModel = currentModels[role]; // Use the fetched data
		const allModelsRaw = getAvailableModels(); // Get all available models

		// Manually group models by provider
		const modelsByProvider = allModelsRaw.reduce((acc, model) => {
			if (!acc[model.provider]) {
				acc[model.provider] = [];
			}
			acc[model.provider].push(model);
			return acc;
		}, {});

		const cancelOption = { name: '⏹ Cancel Model Setup', value: '__CANCEL__' }; // Symbol updated
		const noChangeOption = currentModel?.modelId
			? {
					name: `✔ No change to current ${role} model (${currentModel.modelId})`, // Symbol updated
					value: '__NO_CHANGE__'
				}
			: null;

		// Define custom provider options
		const customProviderOptions = [
			{ name: '* Custom OpenRouter model', value: '__CUSTOM_OPENROUTER__' },
			{ name: '* Custom Ollama model', value: '__CUSTOM_OLLAMA__' },
			{ name: '* Custom Bedrock model', value: '__CUSTOM_BEDROCK__' },
			{ name: '* Custom Azure model', value: '__CUSTOM_AZURE__' },
			{ name: '* Custom Vertex model', value: '__CUSTOM_VERTEX__' }
		];

		let choices = [];
		let defaultIndex = 0; // Default to 'Cancel'

		// Filter and format models allowed for this role using the manually grouped data
		const roleChoices = Object.entries(modelsByProvider)
			.map(([provider, models]) => {
				const providerModels = models
					.filter((m) => m.allowed_roles.includes(role))
					.map((m) => ({
						name: `${provider} / ${m.id} ${
							m.cost_per_1m_tokens
								? chalk.gray(
										`($${m.cost_per_1m_tokens.input.toFixed(2)} input | $${m.cost_per_1m_tokens.output.toFixed(2)} output)`
									)
								: ''
						}`,
						value: { id: m.id, provider },
						short: `${provider}/${m.id}`
					}));
				if (providerModels.length > 0) {
					return [...providerModels];
				}
				return null;
			})
			.filter(Boolean)
			.flat();

		// Find the index of the currently selected model for setting the default
		let currentChoiceIndex = -1;
		if (currentModel?.modelId && currentModel?.provider) {
			currentChoiceIndex = roleChoices.findIndex(
				(choice) =>
					typeof choice.value === 'object' &&
					choice.value.id === currentModel.modelId &&
					choice.value.provider === currentModel.provider
			);
		}

		// Construct final choices list with custom options moved to bottom
		const systemOptions = [];
		if (noChangeOption) {
			systemOptions.push(noChangeOption);
		}
		systemOptions.push(cancelOption);

		const systemLength = systemOptions.length;

		if (allowNone) {
			choices = [
				...systemOptions,
				new inquirer.Separator('\n── Standard Models ──'),
				{ name: '⚪ None (disable)', value: null },
				...roleChoices,
				new inquirer.Separator('\n── Custom Providers ──'),
				...customProviderOptions
			];
			// Adjust default index: System + Sep1 + None (+2)
			const noneOptionIndex = systemLength + 1;
			defaultIndex =
				currentChoiceIndex !== -1
					? currentChoiceIndex + systemLength + 2 // Offset by system options and separators
					: noneOptionIndex; // Default to 'None' if no current model matched
		} else {
			choices = [
				...systemOptions,
				new inquirer.Separator('\n── Standard Models ──'),
				...roleChoices,
				new inquirer.Separator('\n── Custom Providers ──'),
				...customProviderOptions
			];
			// Adjust default index: System + Sep (+1)
			defaultIndex =
				currentChoiceIndex !== -1
					? currentChoiceIndex + systemLength + 1 // Offset by system options and separator
					: noChangeOption
						? 1
						: 0; // Default to 'No Change' if present, else 'Cancel'
		}

		// Ensure defaultIndex is valid within the final choices array length
		if (defaultIndex < 0 || defaultIndex >= choices.length) {
			// If default calculation failed or pointed outside bounds, reset intelligently
			defaultIndex = 0; // Default to 'Cancel'
			console.warn(
				`Warning: Could not determine default model for role '${role}'. Defaulting to 'Cancel'.`
			); // Add warning
		}

		return { choices, default: defaultIndex };
	};

	// --- Generate choices using the helper ---
	const mainPromptData = getPromptData('main');
	const researchPromptData = getPromptData('research');
	const fallbackPromptData = getPromptData('fallback', true); // Allow 'None' for fallback

	// Display helpful intro message
	console.log(chalk.cyan('\n🎯 Interactive Model Setup'));
	console.log(chalk.gray('━'.repeat(50)));
	console.log(chalk.yellow('💡 Navigation tips:'));
	console.log(chalk.gray('   • Type to search and filter options'));
	console.log(chalk.gray('   • Use ↑↓ arrow keys to navigate results'));
	console.log(
		chalk.gray(
			'   • Standard models are listed first, custom providers at bottom'
		)
	);
	console.log(chalk.gray('   • Press Enter to select\n'));

	// Helper function to create search source for models
	const createSearchSource = (choices, defaultValue) => {
		return (searchTerm = '') => {
			const filteredChoices = choices.filter((choice) => {
				if (choice.type === 'separator') return true; // Always show separators
				const searchText = choice.name || '';
				return searchText.toLowerCase().includes(searchTerm.toLowerCase());
			});
			return Promise.resolve(filteredChoices);
		};
	};

	const answers = {};

	// Main model selection
	answers.mainModel = await search({
		message: 'Select the main model for generation/updates:',
		source: createSearchSource(mainPromptData.choices, mainPromptData.default),
		pageSize: 15
	});

	if (answers.mainModel !== '__CANCEL__') {
		// Research model selection
		answers.researchModel = await search({
			message: 'Select the research model:',
			source: createSearchSource(
				researchPromptData.choices,
				researchPromptData.default
			),
			pageSize: 15
		});

		if (answers.researchModel !== '__CANCEL__') {
			// Fallback model selection
			answers.fallbackModel = await search({
				message: 'Select the fallback model (optional):',
				source: createSearchSource(
					fallbackPromptData.choices,
					fallbackPromptData.default
				),
				pageSize: 15
			});
		}
	}

	let setupSuccess = true;
	let setupConfigModified = false;
	const coreOptionsSetup = { projectRoot }; // Pass root for setup actions

	// Helper to handle setting a model (including custom)
	async function handleSetModel(role, selectedValue, currentModelId) {
		if (selectedValue === '__CANCEL__') {
			console.log(
				chalk.yellow(`\nSetup canceled during ${role} model selection.`)
			);
			setupSuccess = false; // Also mark success as false on cancel
			return false; // Indicate cancellation
		}

		// Handle the new 'No Change' option
		if (selectedValue === '__NO_CHANGE__') {
			console.log(chalk.gray(`No change selected for ${role} model.`));
			return true; // Indicate success, continue setup
		}

		let modelIdToSet = null;
		let providerHint = null;
		let isCustomSelection = false;

		if (selectedValue === '__CUSTOM_OPENROUTER__') {
			isCustomSelection = true;
			const { customId } = await inquirer.prompt([
				{
					type: 'input',
					name: 'customId',
					message: `Enter the custom OpenRouter Model ID for the ${role} role:`
				}
			]);
			if (!customId) {
				console.log(chalk.yellow('No custom ID entered. Skipping role.'));
				return true; // Continue setup, but don't set this role
			}
			modelIdToSet = customId;
			providerHint = CUSTOM_PROVIDERS.OPENROUTER;
			// Validate against live OpenRouter list
			const openRouterModels = await fetchOpenRouterModelsCLI();
			if (
				!openRouterModels ||
				!openRouterModels.some((m) => m.id === modelIdToSet)
			) {
				console.error(
					chalk.red(
						`Error: Model ID "${modelIdToSet}" not found in the live OpenRouter model list. Please check the ID.`
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			}
		} else if (selectedValue === '__CUSTOM_OLLAMA__') {
			isCustomSelection = true;
			const { customId } = await inquirer.prompt([
				{
					type: 'input',
					name: 'customId',
					message: `Enter the custom Ollama Model ID for the ${role} role:`
				}
			]);
			if (!customId) {
				console.log(chalk.yellow('No custom ID entered. Skipping role.'));
				return true; // Continue setup, but don't set this role
			}
			modelIdToSet = customId;
			providerHint = CUSTOM_PROVIDERS.OLLAMA;
			// Get the Ollama base URL from config for this role
			const ollamaBaseURL = getBaseUrlForRole(role, projectRoot);
			// Validate against live Ollama list
			const ollamaModels = await fetchOllamaModelsCLI(ollamaBaseURL);
			if (ollamaModels === null) {
				console.error(
					chalk.red(
						`Error: Unable to connect to Ollama server at ${ollamaBaseURL}. Please ensure Ollama is running and try again.`
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			} else if (!ollamaModels.some((m) => m.model === modelIdToSet)) {
				console.error(
					chalk.red(
						`Error: Model ID "${modelIdToSet}" not found in the Ollama instance. Please verify the model is pulled and available.`
					)
				);
				console.log(
					chalk.yellow(
						`You can check available models with: curl ${ollamaBaseURL}/tags`
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			}
		} else if (selectedValue === '__CUSTOM_BEDROCK__') {
			isCustomSelection = true;
			const { customId } = await inquirer.prompt([
				{
					type: 'input',
					name: 'customId',
					message: `Enter the custom Bedrock Model ID for the ${role} role (e.g., anthropic.claude-3-sonnet-20240229-v1:0):`
				}
			]);
			if (!customId) {
				console.log(chalk.yellow('No custom ID entered. Skipping role.'));
				return true; // Continue setup, but don't set this role
			}
			modelIdToSet = customId;
			providerHint = CUSTOM_PROVIDERS.BEDROCK;

			// Check if AWS environment variables exist
			if (
				!process.env.AWS_ACCESS_KEY_ID ||
				!process.env.AWS_SECRET_ACCESS_KEY
			) {
				console.warn(
					chalk.yellow(
						'Warning: AWS_ACCESS_KEY_ID and/or AWS_SECRET_ACCESS_KEY environment variables are missing. Will fallback to system configuration. (ex: aws config files or ec2 instance profiles)'
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			}

			console.log(
				chalk.blue(
					`Custom Bedrock model "${modelIdToSet}" will be used. No validation performed.`
				)
			);
		} else if (selectedValue === '__CUSTOM_AZURE__') {
			isCustomSelection = true;
			const { customId } = await inquirer.prompt([
				{
					type: 'input',
					name: 'customId',
					message: `Enter the custom Azure OpenAI Model ID for the ${role} role (e.g., gpt-4o):`
				}
			]);
			if (!customId) {
				console.log(chalk.yellow('No custom ID entered. Skipping role.'));
				return true; // Continue setup, but don't set this role
			}
			modelIdToSet = customId;
			providerHint = CUSTOM_PROVIDERS.AZURE;

			// Check if Azure environment variables exist
			if (
				!process.env.AZURE_OPENAI_API_KEY ||
				!process.env.AZURE_OPENAI_ENDPOINT
			) {
				console.error(
					chalk.red(
						'Error: AZURE_OPENAI_API_KEY and/or AZURE_OPENAI_ENDPOINT environment variables are missing. Please set them before using custom Azure models.'
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			}

			console.log(
				chalk.blue(
					`Custom Azure OpenAI model "${modelIdToSet}" will be used. No validation performed.`
				)
			);
		} else if (selectedValue === '__CUSTOM_VERTEX__') {
			isCustomSelection = true;
			const { customId } = await inquirer.prompt([
				{
					type: 'input',
					name: 'customId',
					message: `Enter the custom Vertex AI Model ID for the ${role} role (e.g., gemini-1.5-pro-002):`
				}
			]);
			if (!customId) {
				console.log(chalk.yellow('No custom ID entered. Skipping role.'));
				return true; // Continue setup, but don't set this role
			}
			modelIdToSet = customId;
			providerHint = CUSTOM_PROVIDERS.VERTEX;

			// Check if Google/Vertex environment variables exist
			if (
				!process.env.GOOGLE_API_KEY &&
				!process.env.GOOGLE_APPLICATION_CREDENTIALS
			) {
				console.error(
					chalk.red(
						'Error: Either GOOGLE_API_KEY or GOOGLE_APPLICATION_CREDENTIALS environment variable is required. Please set one before using custom Vertex models.'
					)
				);
				setupSuccess = false;
				return true; // Continue setup, but mark as failed
			}

			console.log(
				chalk.blue(
					`Custom Vertex AI model "${modelIdToSet}" will be used. No validation performed.`
				)
			);
		} else if (
			selectedValue &&
			typeof selectedValue === 'object' &&
			selectedValue.id
		) {
			// Standard model selected from list
			modelIdToSet = selectedValue.id;
			providerHint = selectedValue.provider; // Provider is known
		} else if (selectedValue === null && role === 'fallback') {
			// Handle disabling fallback
			modelIdToSet = null;
			providerHint = null;
		} else if (selectedValue) {
			console.error(
				chalk.red(
					`Internal Error: Unexpected selection value for ${role}: ${JSON.stringify(selectedValue)}`
				)
			);
			setupSuccess = false;
			return true;
		}

		// Only proceed if there's a change to be made
		if (modelIdToSet !== currentModelId) {
			if (modelIdToSet) {
				// Set a specific model (standard or custom)
				const result = await setModel(role, modelIdToSet, {
					...coreOptionsSetup,
					providerHint // Pass the hint
				});
				if (result.success) {
					console.log(
						chalk.blue(
							`Set ${role} model: ${result.data.provider} / ${result.data.modelId}`
						)
					);
					if (result.data.warning) {
						// Display warning if returned by setModel
						console.log(chalk.yellow(result.data.warning));
					}
					setupConfigModified = true;
				} else {
					console.error(
						chalk.red(
							`Error setting ${role} model: ${result.error?.message || 'Unknown'}`
						)
					);
					setupSuccess = false;
				}
			} else if (role === 'fallback') {
				// Disable fallback model
				const currentCfg = getConfig(projectRoot);
				if (currentCfg?.models?.fallback?.modelId) {
					// Check if it was actually set before clearing
					currentCfg.models.fallback = {
						...currentCfg.models.fallback,
						provider: undefined,
						modelId: undefined
					};
					if (writeConfig(currentCfg, projectRoot)) {
						console.log(chalk.blue('Fallback model disabled.'));
						setupConfigModified = true;
					} else {
						console.error(
							chalk.red('Failed to disable fallback model in config file.')
						);
						setupSuccess = false;
					}
				} else {
					console.log(chalk.blue('Fallback model was already disabled.'));
				}
			}
		}
		return true; // Indicate setup should continue
	}

	// Process answers using the handler
	if (
		!(await handleSetModel(
			'main',
			answers.mainModel,
			currentModels.main?.modelId // <--- Now 'currentModels' is defined
		))
	) {
		return false; // Explicitly return false if cancelled
	}
	if (
		!(await handleSetModel(
			'research',
			answers.researchModel,
			currentModels.research?.modelId // <--- Now 'currentModels' is defined
		))
	) {
		return false; // Explicitly return false if cancelled
	}
	if (
		!(await handleSetModel(
			'fallback',
			answers.fallbackModel,
			currentModels.fallback?.modelId // <--- Now 'currentModels' is defined
		))
	) {
		return false; // Explicitly return false if cancelled
	}

	if (setupSuccess && setupConfigModified) {
		console.log(chalk.green.bold('\nModel setup complete!'));
	} else if (setupSuccess && !setupConfigModified) {
		console.log(chalk.yellow('\nNo changes made to model configuration.'));
	} else if (!setupSuccess) {
		console.error(
			chalk.red(
				'\nErrors occurred during model selection. Please review and try again.'
			)
		);
	}
	return true; // Indicate setup flow completed (not cancelled)
	// Let the main command flow continue to display results
}

/**
 * Configure and register CLI commands
 * @param {Object} program - Commander program instance
 */
function registerCommands(programInstance) {
	// Add global error handler for unknown options
	programInstance.on('option:unknown', function (unknownOption) {
		const commandName = this._name || 'unknown';
		console.error(chalk.red(`Error: Unknown option '${unknownOption}'`));
		console.error(
			chalk.yellow(
				`Run 'task-master ${commandName} --help' to see available options`
			)
		);
		process.exit(1);
	});

	// parse-prd command
	programInstance
		.command('parse-prd')
		.description('Parse a PRD file and generate tasks')
		.argument('[file]', 'Path to the PRD file')
		.option(
			'-i, --input <file>',
			'Path to the PRD file (alternative to positional argument)'
		)
		.option('-o, --output <file>', 'Output file path', TASKMASTER_TASKS_FILE)
		.option(
			'-n, --num-tasks <number>',
			'Number of tasks to generate',
			getDefaultNumTasks()
		)
		.option('-f, --force', 'Skip confirmation when overwriting existing tasks')
		.option(
			'--append',
			'Append new tasks to existing tasks.json instead of overwriting'
		)
		.option(
			'-r, --research',
			'Use Perplexity AI for research-backed task generation, providing more comprehensive and accurate task breakdown'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (file, options) => {
			// Use input option if file argument not provided
			const inputFile = file || options.input;
			const defaultPrdPath = PRD_FILE;
			const numTasks = parseInt(options.numTasks, 10);
			const outputPath = options.output;
			const force = options.force || false;
			const append = options.append || false;
			const research = options.research || false;
			let useForce = force;
			const useAppend = append;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			// Helper function to check if there are existing tasks in the target tag and confirm overwrite
			async function confirmOverwriteIfNeeded() {
				// Check if there are existing tasks in the target tag
				let hasExistingTasksInTag = false;
				if (fs.existsSync(outputPath)) {
					try {
						// Read the entire file to check if the tag exists
						const existingFileContent = fs.readFileSync(outputPath, 'utf8');
						const allData = JSON.parse(existingFileContent);

						// Check if the target tag exists and has tasks
						if (
							allData[tag] &&
							Array.isArray(allData[tag].tasks) &&
							allData[tag].tasks.length > 0
						) {
							hasExistingTasksInTag = true;
						}
					} catch (error) {
						// If we can't read the file or parse it, assume no existing tasks in this tag
						hasExistingTasksInTag = false;
					}
				}

				// Only show confirmation if there are existing tasks in the target tag
				if (hasExistingTasksInTag && !useForce && !useAppend) {
					const overwrite = await confirmTaskOverwrite(outputPath);
					if (!overwrite) {
						log('info', 'Operation cancelled.');
						return false;
					}
					// If user confirms 'y', we should set useForce = true for the parsePRD call
					// Only overwrite if not appending
					useForce = true;
				}
				return true;
			}

			let spinner;

			try {
				if (!inputFile) {
					if (fs.existsSync(defaultPrdPath)) {
						console.log(
							chalk.blue(`Using default PRD file path: ${defaultPrdPath}`)
						);
						if (!(await confirmOverwriteIfNeeded())) return;

						console.log(chalk.blue(`Generating ${numTasks} tasks...`));
						spinner = ora('Parsing PRD and generating tasks...\n').start();
						await parsePRD(defaultPrdPath, outputPath, numTasks, {
							append: useAppend, // Changed key from useAppend to append
							force: useForce, // Changed key from useForce to force
							research: research,
							projectRoot: projectRoot,
							tag: tag
						});
						spinner.succeed('Tasks generated successfully!');
						return;
					}

					console.log(
						chalk.yellow(
							`No PRD file specified and default PRD file not found at ${PRD_FILE}.`
						)
					);
					console.log(
						boxen(
							`${chalk.white.bold('Parse PRD Help')}\n\n${chalk.cyan('Usage:')}\n  task-master parse-prd <prd-file.txt> [options]\n\n${chalk.cyan('Options:')}\n  -i, --input <file>       Path to the PRD file (alternative to positional argument)\n  -o, --output <file>      Output file path (default: "${TASKMASTER_TASKS_FILE}")\n  -n, --num-tasks <number> Number of tasks to generate (default: 10)\n  -f, --force              Skip confirmation when overwriting existing tasks\n  --append                 Append new tasks to existing tasks.json instead of overwriting\n  -r, --research           Use Perplexity AI for research-backed task generation\n\n${chalk.cyan('Example:')}\n  task-master parse-prd requirements.txt --num-tasks 15\n  task-master parse-prd --input=requirements.txt\n  task-master parse-prd --force\n  task-master parse-prd requirements_v2.txt --append\n  task-master parse-prd requirements.txt --research\n\n${chalk.yellow('Note: This command will:')}\n  1. Look for a PRD file at ${PRD_FILE} by default\n  2. Use the file specified by --input or positional argument if provided\n  3. Generate tasks from the PRD and either:\n     - Overwrite any existing tasks.json file (default)\n     - Append to existing tasks.json if --append is used`,
							{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
						)
					);
					return;
				}

				if (!fs.existsSync(inputFile)) {
					console.error(
						chalk.red(`Error: Input PRD file not found: ${inputFile}`)
					);
					process.exit(1);
				}

				if (!(await confirmOverwriteIfNeeded())) return;

				console.log(chalk.blue(`Parsing PRD file: ${inputFile}`));
				console.log(chalk.blue(`Generating ${numTasks} tasks...`));
				if (append) {
					console.log(chalk.blue('Appending to existing tasks...'));
				}
				if (research) {
					console.log(
						chalk.blue(
							'Using Perplexity AI for research-backed task generation'
						)
					);
				}

				spinner = ora('Parsing PRD and generating tasks...\n').start();
				await parsePRD(inputFile, outputPath, numTasks, {
					append: useAppend,
					force: useForce,
					research: research,
					projectRoot: projectRoot,
					tag: tag
				});
				spinner.succeed('Tasks generated successfully!');
			} catch (error) {
				if (spinner) {
					spinner.fail(`Error parsing PRD: ${error.message}`);
				} else {
					console.error(chalk.red(`Error parsing PRD: ${error.message}`));
				}
				process.exit(1);
			}
		});

	// update command
	programInstance
		.command('update')
		.description(
			'Update multiple tasks with ID >= "from" based on new information or implementation changes'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'--from <id>',
			'Task ID to start updating from (tasks with ID >= this value will be updated)',
			'1'
		)
		.option(
			'-p, --prompt <text>',
			'Prompt explaining the changes or new context (required)'
		)
		.option(
			'-r, --research',
			'Use Perplexity AI for research-backed task updates'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const fromId = parseInt(options.from, 10); // Validation happens here
			const prompt = options.prompt;
			const useResearch = options.research || false;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			// Check if there's an 'id' option which is a common mistake (instead of 'from')
			if (
				process.argv.includes('--id') ||
				process.argv.some((arg) => arg.startsWith('--id='))
			) {
				console.error(
					chalk.red('Error: The update command uses --from=<id>, not --id=<id>')
				);
				console.log(chalk.yellow('\nTo update multiple tasks:'));
				console.log(
					`  task-master update --from=${fromId} --prompt="Your prompt here"`
				);
				console.log(
					chalk.yellow(
						'\nTo update a single specific task, use the update-task command instead:'
					)
				);
				console.log(
					`  task-master update-task --id=<id> --prompt="Your prompt here"`
				);
				process.exit(1);
			}

			if (!prompt) {
				console.error(
					chalk.red(
						'Error: --prompt parameter is required. Please provide information about the changes.'
					)
				);
				process.exit(1);
			}

			console.log(
				chalk.blue(
					`Updating tasks from ID >= ${fromId} with prompt: "${prompt}"`
				)
			);
			console.log(chalk.blue(`Tasks file: ${tasksPath}`));

			if (useResearch) {
				console.log(
					chalk.blue('Using Perplexity AI for research-backed task updates')
				);
			}

			// Call core updateTasks, passing context for CLI
			await updateTasks(
				tasksPath,
				fromId,
				prompt,
				useResearch,
				{ projectRoot, tag } // Pass context with projectRoot and tag
			);
		});

	// update-task command
	programInstance
		.command('update-task')
		.description(
			'Update a single specific task by ID with new information (use --id parameter)'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('-i, --id <id>', 'Task ID to update (required)')
		.option(
			'-p, --prompt <text>',
			'Prompt explaining the changes or new context (required)'
		)
		.option(
			'-r, --research',
			'Use Perplexity AI for research-backed task updates'
		)
		.option(
			'--append',
			'Append timestamped information to task details instead of full update'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			try {
				const tasksPath = options.file || TASKMASTER_TASKS_FILE;

				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				// Resolve tag using standard pattern
				const tag = options.tag || getCurrentTag(projectRoot) || 'master';

				// Show current tag context
				displayCurrentTagIndicator(tag);

				// Validate required parameters
				if (!options.id) {
					console.error(chalk.red('Error: --id parameter is required'));
					console.log(
						chalk.yellow(
							'Usage example: task-master update-task --id=23 --prompt="Update with new information"'
						)
					);
					process.exit(1);
				}

				// Parse the task ID and validate it's a number
				const taskId = parseInt(options.id, 10);
				if (Number.isNaN(taskId) || taskId <= 0) {
					console.error(
						chalk.red(
							`Error: Invalid task ID: ${options.id}. Task ID must be a positive integer.`
						)
					);
					console.log(
						chalk.yellow(
							'Usage example: task-master update-task --id=23 --prompt="Update with new information"'
						)
					);
					process.exit(1);
				}

				if (!options.prompt) {
					console.error(
						chalk.red(
							'Error: --prompt parameter is required. Please provide information about the changes.'
						)
					);
					console.log(
						chalk.yellow(
							'Usage example: task-master update-task --id=23 --prompt="Update with new information"'
						)
					);
					process.exit(1);
				}

				const prompt = options.prompt;
				const useResearch = options.research || false;

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					if (tasksPath === TASKMASTER_TASKS_FILE) {
						console.log(
							chalk.yellow(
								'Hint: Run task-master init or task-master parse-prd to create tasks.json first'
							)
						);
					} else {
						console.log(
							chalk.yellow(
								`Hint: Check if the file path is correct: ${tasksPath}`
							)
						);
					}
					process.exit(1);
				}

				console.log(
					chalk.blue(`Updating task ${taskId} with prompt: "${prompt}"`)
				);
				console.log(chalk.blue(`Tasks file: ${tasksPath}`));

				if (useResearch) {
					// Verify Perplexity API key exists if using research
					if (!isApiKeySet('perplexity')) {
						console.log(
							chalk.yellow(
								'Warning: PERPLEXITY_API_KEY environment variable is missing. Research-backed updates will not be available.'
							)
						);
						console.log(
							chalk.yellow('Falling back to Claude AI for task update.')
						);
					} else {
						console.log(
							chalk.blue('Using Perplexity AI for research-backed task update')
						);
					}
				}

				const result = await updateTaskById(
					tasksPath,
					taskId,
					prompt,
					useResearch,
					{ projectRoot, tag },
					'text',
					options.append || false
				);

				// If the task wasn't updated (e.g., if it was already marked as done)
				if (!result) {
					console.log(
						chalk.yellow(
							'\nTask update was not completed. Review the messages above for details.'
						)
					);
				}
			} catch (error) {
				console.error(chalk.red(`Error: ${error.message}`));

				// Provide more helpful error messages for common issues
				if (
					error.message.includes('task') &&
					error.message.includes('not found')
				) {
					console.log(chalk.yellow('\nTo fix this issue:'));
					console.log(
						'  1. Run task-master list to see all available task IDs'
					);
					console.log('  2. Use a valid task ID with the --id parameter');
				} else if (error.message.includes('API key')) {
					console.log(
						chalk.yellow(
							'\nThis error is related to API keys. Check your environment variables.'
						)
					);
				}

				// Use getDebugFlag getter instead of CONFIG.debug
				if (getDebugFlag()) {
					console.error(error);
				}

				process.exit(1);
			}
		});

	// update-subtask command
	programInstance
		.command('update-subtask')
		.description(
			'Update a subtask by appending additional timestamped information'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-i, --id <id>',
			'Subtask ID to update in format "parentId.subtaskId" (required)'
		)
		.option(
			'-p, --prompt <text>',
			'Prompt explaining what information to add (required)'
		)
		.option('-r, --research', 'Use Perplexity AI for research-backed updates')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			try {
				const tasksPath = options.file || TASKMASTER_TASKS_FILE;

				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				// Resolve tag using standard pattern
				const tag = options.tag || getCurrentTag(projectRoot) || 'master';

				// Show current tag context
				displayCurrentTagIndicator(tag);

				// Validate required parameters
				if (!options.id) {
					console.error(chalk.red('Error: --id parameter is required'));
					console.log(
						chalk.yellow(
							'Usage example: task-master update-subtask --id=5.2 --prompt="Add more details about the API endpoint"'
						)
					);
					process.exit(1);
				}

				// Validate subtask ID format (should contain a dot)
				const subtaskId = options.id;
				if (!subtaskId.includes('.')) {
					console.error(
						chalk.red(
							`Error: Invalid subtask ID format: ${subtaskId}. Subtask ID must be in format "parentId.subtaskId"`
						)
					);
					console.log(
						chalk.yellow(
							'Usage example: task-master update-subtask --id=5.2 --prompt="Add more details about the API endpoint"'
						)
					);
					process.exit(1);
				}

				if (!options.prompt) {
					console.error(
						chalk.red(
							'Error: --prompt parameter is required. Please provide information to add to the subtask.'
						)
					);
					console.log(
						chalk.yellow(
							'Usage example: task-master update-subtask --id=5.2 --prompt="Add more details about the API endpoint"'
						)
					);
					process.exit(1);
				}

				const prompt = options.prompt;
				const useResearch = options.research || false;

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					if (tasksPath === TASKMASTER_TASKS_FILE) {
						console.log(
							chalk.yellow(
								'Hint: Run task-master init or task-master parse-prd to create tasks.json first'
							)
						);
					} else {
						console.log(
							chalk.yellow(
								`Hint: Check if the file path is correct: ${tasksPath}`
							)
						);
					}
					process.exit(1);
				}

				console.log(
					chalk.blue(`Updating subtask ${subtaskId} with prompt: "${prompt}"`)
				);
				console.log(chalk.blue(`Tasks file: ${tasksPath}`));

				if (useResearch) {
					// Verify Perplexity API key exists if using research
					if (!isApiKeySet('perplexity')) {
						console.log(
							chalk.yellow(
								'Warning: PERPLEXITY_API_KEY environment variable is missing. Research-backed updates will not be available.'
							)
						);
						console.log(
							chalk.yellow('Falling back to Claude AI for subtask update.')
						);
					} else {
						console.log(
							chalk.blue(
								'Using Perplexity AI for research-backed subtask update'
							)
						);
					}
				}

				const result = await updateSubtaskById(
					tasksPath,
					subtaskId,
					prompt,
					useResearch,
					{ projectRoot, tag }
				);

				if (!result) {
					console.log(
						chalk.yellow(
							'\nSubtask update was not completed. Review the messages above for details.'
						)
					);
				}
			} catch (error) {
				console.error(chalk.red(`Error: ${error.message}`));

				// Provide more helpful error messages for common issues
				if (
					error.message.includes('subtask') &&
					error.message.includes('not found')
				) {
					console.log(chalk.yellow('\nTo fix this issue:'));
					console.log(
						'  1. Run task-master list --with-subtasks to see all available subtask IDs'
					);
					console.log(
						'  2. Use a valid subtask ID with the --id parameter in format "parentId.subtaskId"'
					);
				} else if (error.message.includes('API key')) {
					console.log(
						chalk.yellow(
							'\nThis error is related to API keys. Check your environment variables.'
						)
					);
				}

				// Use getDebugFlag getter instead of CONFIG.debug
				if (getDebugFlag()) {
					console.error(error);
				}

				process.exit(1);
			}
		});

	// generate command
	programInstance
		.command('generate')
		.description('Generate task files from tasks.json')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-o, --output <dir>',
			'Output directory',
			path.dirname(TASKMASTER_TASKS_FILE)
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const outputDir = options.output;
			const tag = options.tag;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			console.log(chalk.blue(`Generating task files from: ${tasksPath}`));
			console.log(chalk.blue(`Output directory: ${outputDir}`));

			await generateTaskFiles(tasksPath, outputDir, { projectRoot, tag });
		});

	// set-status command
	programInstance
		.command('set-status')
		.alias('mark')
		.alias('set')
		.description('Set the status of a task')
		.option(
			'-i, --id <id>',
			'Task ID (can be comma-separated for multiple tasks)'
		)
		.option(
			'-s, --status <status>',
			`New status (one of: ${TASK_STATUS_OPTIONS.join(', ')})`
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const taskId = options.id;
			const status = options.status;
			const tag = options.tag;

			if (!taskId || !status) {
				console.error(chalk.red('Error: Both --id and --status are required'));
				process.exit(1);
			}

			if (!isValidTaskStatus(status)) {
				console.error(
					chalk.red(
						`Error: Invalid status value: ${status}. Use one of: ${TASK_STATUS_OPTIONS.join(', ')}`
					)
				);

				process.exit(1);
			}

			// Find project root for tag resolution
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern and show current tag context
			const resolvedTag = tag || getCurrentTag(projectRoot) || 'master';
			displayCurrentTagIndicator(resolvedTag);

			console.log(
				chalk.blue(`Setting status of task(s) ${taskId} to: ${status}`)
			);

			await setTaskStatus(tasksPath, taskId, status, { projectRoot, tag });
		});

	// list command
	programInstance
		.command('list')
		.description('List all tasks')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-r, --report <report>',
			'Path to the complexity report file',
			COMPLEXITY_REPORT_FILE
		)
		.option('-s, --status <status>', 'Filter by status')
		.option('--with-subtasks', 'Show subtasks for each task')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const reportPath = options.report;
			const statusFilter = options.status;
			const withSubtasks = options.withSubtasks || false;
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			console.log(chalk.blue(`Listing tasks from: ${tasksPath}`));
			if (statusFilter) {
				console.log(chalk.blue(`Filtering by status: ${statusFilter}`));
			}
			if (withSubtasks) {
				console.log(chalk.blue('Including subtasks in listing'));
			}

			await listTasks(
				tasksPath,
				statusFilter,
				reportPath,
				withSubtasks,
				'text',
				tag,
				{ projectRoot }
			);
		});

	// expand command
	programInstance
		.command('expand')
		.description('Expand a task into subtasks using AI')
		.option('-i, --id <id>', 'ID of the task to expand')
		.option(
			'-a, --all',
			'Expand all pending tasks based on complexity analysis'
		)
		.option(
			'-n, --num <number>',
			'Number of subtasks to generate (uses complexity analysis by default if available)'
		)
		.option(
			'-r, --research',
			'Enable research-backed generation (e.g., using Perplexity)',
			false
		)
		.option('-p, --prompt <text>', 'Additional context for subtask generation')
		.option('-f, --force', 'Force expansion even if subtasks exist', false) // Ensure force option exists
		.option(
			'--file <file>',
			'Path to the tasks file (relative to project root)',
			TASKMASTER_TASKS_FILE // Allow file override
		) // Allow file override
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}
			const tasksPath = path.resolve(projectRoot, options.file); // Resolve tasks path
			const tag = options.tag;

			// Show current tag context
			displayCurrentTagIndicator(tag || getCurrentTag(projectRoot) || 'master');

			if (options.all) {
				// --- Handle expand --all ---
				console.log(chalk.blue('Expanding all pending tasks...'));
				// Updated call to the refactored expandAllTasks
				try {
					const result = await expandAllTasks(
						tasksPath,
						options.num, // Pass num
						options.research, // Pass research flag
						options.prompt, // Pass additional context
						options.force, // Pass force flag
						{ projectRoot, tag } // Pass context with projectRoot and tag
						// outputFormat defaults to 'text' in expandAllTasks for CLI
					);
				} catch (error) {
					console.error(
						chalk.red(`Error expanding all tasks: ${error.message}`)
					);
					process.exit(1);
				}
			} else if (options.id) {
				// --- Handle expand --id <id> (Should be correct from previous refactor) ---
				if (!options.id) {
					console.error(
						chalk.red('Error: Task ID is required unless using --all.')
					);
					process.exit(1);
				}

				console.log(chalk.blue(`Expanding task ${options.id}...`));
				try {
					// Call the refactored expandTask function
					await expandTask(
						tasksPath,
						options.id,
						options.num,
						options.research,
						options.prompt,
						{ projectRoot, tag }, // Pass context with projectRoot and tag
						options.force // Pass the force flag down
					);
					// expandTask logs its own success/failure for single task
				} catch (error) {
					console.error(
						chalk.red(`Error expanding task ${options.id}: ${error.message}`)
					);
					process.exit(1);
				}
			} else {
				console.error(
					chalk.red('Error: You must specify either a task ID (--id) or --all.')
				);
				programInstance.help(); // Show help
			}
		});

	// analyze-complexity command
	programInstance
		.command('analyze-complexity')
		.description(
			`Analyze tasks and generate expansion recommendations${chalk.reset('')}`
		)
		.option(
			'-o, --output <file>',
			'Output file path for the report',
			COMPLEXITY_REPORT_FILE
		)
		.option(
			'-m, --model <model>',
			'LLM model to use for analysis (defaults to configured model)'
		)
		.option(
			'-t, --threshold <number>',
			'Minimum complexity score to recommend expansion (1-10)',
			'5'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-r, --research',
			'Use Perplexity AI for research-backed complexity analysis'
		)
		.option(
			'-i, --id <ids>',
			'Comma-separated list of specific task IDs to analyze (e.g., "1,3,5")'
		)
		.option('--from <id>', 'Starting task ID in a range to analyze')
		.option('--to <id>', 'Ending task ID in a range to analyze')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const tag = options.tag;
			const modelOverride = options.model;
			const thresholdScore = parseFloat(options.threshold);
			const useResearch = options.research || false;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Use the provided tag, or the current active tag, or default to 'master'
			const targetTag = tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(targetTag);

			// Tag-aware output file naming: master -> task-complexity-report.json, other tags -> task-complexity-report_tagname.json
			const outputPath =
				options.output === COMPLEXITY_REPORT_FILE && targetTag !== 'master'
					? options.output.replace('.json', `_${targetTag}.json`)
					: options.output;

			console.log(chalk.blue(`Analyzing task complexity from: ${tasksPath}`));
			console.log(chalk.blue(`Output report will be saved to: ${outputPath}`));

			if (options.id) {
				console.log(chalk.blue(`Analyzing specific task IDs: ${options.id}`));
			} else if (options.from || options.to) {
				const fromStr = options.from ? options.from : 'first';
				const toStr = options.to ? options.to : 'last';
				console.log(
					chalk.blue(`Analyzing tasks in range: ${fromStr} to ${toStr}`)
				);
			}

			if (useResearch) {
				console.log(
					chalk.blue(
						'Using Perplexity AI for research-backed complexity analysis'
					)
				);
			}

			// Update options with tag-aware output path and context
			const updatedOptions = {
				...options,
				output: outputPath,
				tag: targetTag,
				projectRoot: projectRoot
			};

			await analyzeTaskComplexity(updatedOptions);
		});

	// research command
	programInstance
		.command('research')
		.description('Perform AI-powered research queries with project context')
		.argument('[prompt]', 'Research prompt to investigate')
		.option('--file <file>', 'Path to the tasks file')
		.option(
			'-i, --id <ids>',
			'Comma-separated task/subtask IDs to include as context (e.g., "15,16.2")'
		)
		.option(
			'-f, --files <paths>',
			'Comma-separated file paths to include as context'
		)
		.option(
			'-c, --context <text>',
			'Additional custom context to include in the research prompt'
		)
		.option(
			'-t, --tree',
			'Include project file tree structure in the research context'
		)
		.option(
			'-s, --save <file>',
			'Save research results to the specified task/subtask(s)'
		)
		.option(
			'-d, --detail <level>',
			'Output detail level: low, medium, high',
			'medium'
		)
		.option(
			'--save-to <id>',
			'Automatically save research results to specified task/subtask ID (e.g., "15" or "15.2")'
		)
		.option(
			'--save-file',
			'Save research results to .taskmaster/docs/research/ directory'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (prompt, options) => {
			// Parameter validation
			if (!prompt || typeof prompt !== 'string' || prompt.trim().length === 0) {
				console.error(
					chalk.red('Error: Research prompt is required and cannot be empty')
				);
				showResearchHelp();
				process.exit(1);
			}

			// Validate detail level
			const validDetailLevels = ['low', 'medium', 'high'];
			if (
				options.detail &&
				!validDetailLevels.includes(options.detail.toLowerCase())
			) {
				console.error(
					chalk.red(
						`Error: Detail level must be one of: ${validDetailLevels.join(', ')}`
					)
				);
				process.exit(1);
			}

			// Validate and parse task IDs if provided
			let taskIds = [];
			if (options.id) {
				try {
					taskIds = options.id.split(',').map((id) => {
						const trimmedId = id.trim();
						// Support both task IDs (e.g., "15") and subtask IDs (e.g., "15.2")
						if (!/^\d+(\.\d+)?$/.test(trimmedId)) {
							throw new Error(
								`Invalid task ID format: "${trimmedId}". Expected format: "15" or "15.2"`
							);
						}
						return trimmedId;
					});
				} catch (error) {
					console.error(chalk.red(`Error parsing task IDs: ${error.message}`));
					process.exit(1);
				}
			}

			// Validate and parse file paths if provided
			let filePaths = [];
			if (options.files) {
				try {
					filePaths = options.files.split(',').map((filePath) => {
						const trimmedPath = filePath.trim();
						if (trimmedPath.length === 0) {
							throw new Error('Empty file path provided');
						}
						return trimmedPath;
					});
				} catch (error) {
					console.error(
						chalk.red(`Error parsing file paths: ${error.message}`)
					);
					process.exit(1);
				}
			}

			// Validate save-to option if provided
			if (options.saveTo) {
				const saveToId = options.saveTo.trim();
				if (saveToId.length === 0) {
					console.error(chalk.red('Error: Save-to ID cannot be empty'));
					process.exit(1);
				}
				// Validate ID format: number or number.number
				if (!/^\d+(\.\d+)?$/.test(saveToId)) {
					console.error(
						chalk.red(
							'Error: Save-to ID must be in format "15" for task or "15.2" for subtask'
						)
					);
					process.exit(1);
				}
			}

			// Validate save option if provided (legacy file save)
			if (options.save) {
				const saveTarget = options.save.trim();
				if (saveTarget.length === 0) {
					console.error(chalk.red('Error: Save target cannot be empty'));
					process.exit(1);
				}
				// Check if it's a valid file path (basic validation)
				if (saveTarget.includes('..') || saveTarget.startsWith('/')) {
					console.error(
						chalk.red(
							'Error: Save path must be relative and cannot contain ".."'
						)
					);
					process.exit(1);
				}
			}

			// Determine project root and tasks file path
			const projectRoot = findProjectRoot() || '.';
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';
			const tasksPath =
				options.file ||
				path.join(projectRoot, '.taskmaster', 'tasks', 'tasks.json');

			// Show current tag context
			displayCurrentTagIndicator(tag);

			// Validate tasks file exists if task IDs are specified
			if (taskIds.length > 0) {
				try {
					const tasksData = readJSON(tasksPath, projectRoot, tag);
					if (!tasksData || !tasksData.tasks) {
						console.error(
							chalk.red(
								`Error: No valid tasks found in ${tasksPath} for tag '${tag}'`
							)
						);
						process.exit(1);
					}
				} catch (error) {
					console.error(
						chalk.red(`Error reading tasks file: ${error.message}`)
					);
					process.exit(1);
				}
			}

			// Validate file paths exist if specified
			if (filePaths.length > 0) {
				for (const filePath of filePaths) {
					const fullPath = path.isAbsolute(filePath)
						? filePath
						: path.join(projectRoot, filePath);
					if (!fs.existsSync(fullPath)) {
						console.error(chalk.red(`Error: File not found: ${filePath}`));
						process.exit(1);
					}
				}
			}

			// Create validated parameters object
			const validatedParams = {
				prompt: prompt.trim(),
				taskIds: taskIds,
				filePaths: filePaths,
				customContext: options.context ? options.context.trim() : null,
				includeProjectTree: !!options.tree,
				saveTarget: options.save ? options.save.trim() : null,
				saveToId: options.saveTo ? options.saveTo.trim() : null,
				allowFollowUp: true, // Always allow follow-up in CLI
				detailLevel: options.detail ? options.detail.toLowerCase() : 'medium',
				tasksPath: tasksPath,
				projectRoot: projectRoot
			};

			// Display what we're about to do
			console.log(chalk.blue(`Researching: "${validatedParams.prompt}"`));

			if (validatedParams.taskIds.length > 0) {
				console.log(
					chalk.gray(`Task context: ${validatedParams.taskIds.join(', ')}`)
				);
			}

			if (validatedParams.filePaths.length > 0) {
				console.log(
					chalk.gray(`File context: ${validatedParams.filePaths.join(', ')}`)
				);
			}

			if (validatedParams.customContext) {
				console.log(
					chalk.gray(
						`Custom context: ${validatedParams.customContext.substring(0, 50)}${validatedParams.customContext.length > 50 ? '...' : ''}`
					)
				);
			}

			if (validatedParams.includeProjectTree) {
				console.log(chalk.gray('Including project file tree'));
			}

			console.log(chalk.gray(`Detail level: ${validatedParams.detailLevel}`));

			try {
				// Import the research function
				const { performResearch } = await import('./task-manager/research.js');

				// Prepare research options
				const researchOptions = {
					taskIds: validatedParams.taskIds,
					filePaths: validatedParams.filePaths,
					customContext: validatedParams.customContext || '',
					includeProjectTree: validatedParams.includeProjectTree,
					detailLevel: validatedParams.detailLevel,
					projectRoot: validatedParams.projectRoot,
					saveToFile: !!options.saveFile,
					tag: tag
				};

				// Execute research
				const result = await performResearch(
					validatedParams.prompt,
					researchOptions,
					{
						commandName: 'research',
						outputType: 'cli',
						tag: tag
					},
					'text',
					validatedParams.allowFollowUp // Pass follow-up flag
				);

				// Auto-save to task/subtask if requested and no interactive save occurred
				if (validatedParams.saveToId && !result.interactiveSaveOccurred) {
					try {
						const isSubtask = validatedParams.saveToId.includes('.');

						// Format research content for saving
						const researchContent = `## Research Query: ${validatedParams.prompt}

**Detail Level:** ${result.detailLevel}
**Context Size:** ${result.contextSize} characters
**Timestamp:** ${new Date().toLocaleDateString()} ${new Date().toLocaleTimeString()}

### Results

${result.result}`;

						if (isSubtask) {
							// Save to subtask
							const { updateSubtaskById } = await import(
								'./task-manager/update-subtask-by-id.js'
							);

							await updateSubtaskById(
								validatedParams.tasksPath,
								validatedParams.saveToId,
								researchContent,
								false, // useResearch = false for simple append
								{
									commandName: 'research-save',
									outputType: 'cli',
									projectRoot: validatedParams.projectRoot,
									tag: tag
								},
								'text'
							);

							console.log(
								chalk.green(
									`✅ Research saved to subtask ${validatedParams.saveToId}`
								)
							);
						} else {
							// Save to task
							const updateTaskById = (
								await import('./task-manager/update-task-by-id.js')
							).default;

							const taskIdNum = parseInt(validatedParams.saveToId, 10);
							await updateTaskById(
								validatedParams.tasksPath,
								taskIdNum,
								researchContent,
								false, // useResearch = false for simple append
								{
									commandName: 'research-save',
									outputType: 'cli',
									projectRoot: validatedParams.projectRoot,
									tag: tag
								},
								'text',
								true // appendMode = true
							);

							console.log(
								chalk.green(
									`✅ Research saved to task ${validatedParams.saveToId}`
								)
							);
						}
					} catch (saveError) {
						console.log(
							chalk.red(`❌ Error saving to task/subtask: ${saveError.message}`)
						);
					}
				}

				// Save results to file if requested (legacy)
				if (validatedParams.saveTarget) {
					const saveContent = `# Research Query: ${validatedParams.prompt}

**Detail Level:** ${result.detailLevel}
**Context Size:** ${result.contextSize} characters
**Timestamp:** ${new Date().toISOString()}

## Results

${result.result}
`;

					fs.writeFileSync(validatedParams.saveTarget, saveContent, 'utf-8');
					console.log(
						chalk.green(`\n💾 Results saved to: ${validatedParams.saveTarget}`)
					);
				}
			} catch (error) {
				console.error(chalk.red(`\n❌ Research failed: ${error.message}`));
				process.exit(1);
			}
		});

	// clear-subtasks command
	programInstance
		.command('clear-subtasks')
		.description('Clear subtasks from specified tasks')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-i, --id <ids>',
			'Task IDs (comma-separated) to clear subtasks from'
		)
		.option('--all', 'Clear subtasks from all tasks')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const taskIds = options.id;
			const all = options.all;
			const tag = options.tag;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Show current tag context
			displayCurrentTagIndicator(tag || getCurrentTag(projectRoot) || 'master');

			if (!taskIds && !all) {
				console.error(
					chalk.red(
						'Error: Please specify task IDs with --id=<ids> or use --all to clear all tasks'
					)
				);
				process.exit(1);
			}

			if (all) {
				// If --all is specified, get all task IDs
				const data = readJSON(tasksPath, projectRoot, tag);
				if (!data || !data.tasks) {
					console.error(chalk.red('Error: No valid tasks found'));
					process.exit(1);
				}
				const allIds = data.tasks.map((t) => t.id).join(',');
				clearSubtasks(tasksPath, allIds, { projectRoot, tag });
			} else {
				clearSubtasks(tasksPath, taskIds, { projectRoot, tag });
			}
		});

	// add-task command
	programInstance
		.command('add-task')
		.description('Add a new task using AI, optionally providing manual details')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-p, --prompt <prompt>',
			'Description of the task to add (required if not using manual fields)'
		)
		.option('-t, --title <title>', 'Task title (for manual task creation)')
		.option(
			'-d, --description <description>',
			'Task description (for manual task creation)'
		)
		.option(
			'--details <details>',
			'Implementation details (for manual task creation)'
		)
		.option(
			'--dependencies <dependencies>',
			'Comma-separated list of task IDs this task depends on'
		)
		.option(
			'--priority <priority>',
			'Task priority (high, medium, low)',
			'medium'
		)
		.option(
			'-r, --research',
			'Whether to use research capabilities for task creation'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const isManualCreation = options.title && options.description;

			// Validate that either prompt or title+description are provided
			if (!options.prompt && !isManualCreation) {
				console.error(
					chalk.red(
						'Error: Either --prompt or both --title and --description must be provided'
					)
				);
				process.exit(1);
			}

			const tasksPath = options.file || TASKMASTER_TASKS_FILE;

			if (!fs.existsSync(tasksPath)) {
				console.error(
					`❌ No tasks.json file found. Please run "task-master init" or create a tasks.json file at ${TASKMASTER_TASKS_FILE}`
				);
				process.exit(1);
			}

			// Correctly determine projectRoot
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Show current tag context
			displayCurrentTagIndicator(
				options.tag || getCurrentTag(projectRoot) || 'master'
			);

			let manualTaskData = null;
			if (isManualCreation) {
				manualTaskData = {
					title: options.title,
					description: options.description,
					details: options.details || '',
					testStrategy: options.testStrategy || ''
				};
				// Restore specific logging for manual creation
				console.log(
					chalk.blue(`Creating task manually with title: "${options.title}"`)
				);
			} else {
				// Restore specific logging for AI creation
				console.log(
					chalk.blue(`Creating task with AI using prompt: "${options.prompt}"`)
				);
			}

			// Log dependencies and priority if provided (restored)
			const dependenciesArray = options.dependencies
				? options.dependencies.split(',').map((id) => id.trim())
				: [];
			if (dependenciesArray.length > 0) {
				console.log(
					chalk.blue(`Dependencies: [${dependenciesArray.join(', ')}]`)
				);
			}
			if (options.priority) {
				console.log(chalk.blue(`Priority: ${options.priority}`));
			}

			const context = {
				projectRoot,
				tag: options.tag,
				commandName: 'add-task',
				outputType: 'cli'
			};

			try {
				const { newTaskId, telemetryData } = await addTask(
					tasksPath,
					options.prompt,
					dependenciesArray,
					options.priority,
					context,
					'text',
					manualTaskData,
					options.research
				);

				// addTask handles detailed CLI success logging AND telemetry display when outputFormat is 'text'
				// No need to call displayAiUsageSummary here anymore.
			} catch (error) {
				console.error(chalk.red(`Error adding task: ${error.message}`));
				if (error.details) {
					console.error(chalk.red(error.details));
				}
				process.exit(1);
			}
		});

	// next command
	programInstance
		.command('next')
		.description(
			`Show the next task to work on based on dependencies and status${chalk.reset('')}`
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-r, --report <report>',
			'Path to the complexity report file',
			COMPLEXITY_REPORT_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const reportPath = options.report;
			const tag = options.tag;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Show current tag context
			displayCurrentTagIndicator(tag || getCurrentTag(projectRoot) || 'master');

			await displayNextTask(tasksPath, reportPath, { projectRoot, tag });
		});

	// show command
	programInstance
		.command('show')
		.description(
			`Display detailed information about one or more tasks${chalk.reset('')}`
		)
		.argument('[id]', 'Task ID(s) to show (comma-separated for multiple)')
		.option(
			'-i, --id <id>',
			'Task ID(s) to show (comma-separated for multiple)'
		)
		.option('-s, --status <status>', 'Filter subtasks by status')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-r, --report <report>',
			'Path to the complexity report file',
			COMPLEXITY_REPORT_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (taskId, options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			const idArg = taskId || options.id;
			const statusFilter = options.status;
			const tag = options.tag;

			// Show current tag context
			displayCurrentTagIndicator(tag || getCurrentTag(projectRoot) || 'master');

			if (!idArg) {
				console.error(chalk.red('Error: Please provide a task ID'));
				process.exit(1);
			}

			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const reportPath = options.report;

			// Check if multiple IDs are provided (comma-separated)
			const taskIds = idArg
				.split(',')
				.map((id) => id.trim())
				.filter((id) => id.length > 0);

			if (taskIds.length > 1) {
				// Multiple tasks - use compact summary view with interactive drill-down
				await displayMultipleTasksSummary(
					tasksPath,
					taskIds,
					reportPath,
					statusFilter,
					{ projectRoot, tag }
				);
			} else {
				// Single task - use detailed view
				await displayTaskById(
					tasksPath,
					taskIds[0],
					reportPath,
					statusFilter,
					tag,
					{ projectRoot }
				);
			}
		});

	// add-dependency command
	programInstance
		.command('add-dependency')
		.description('Add a dependency to a task')
		.option('-i, --id <id>', 'Task ID to add dependency to')
		.option('-d, --depends-on <id>', 'Task ID that will become a dependency')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const taskId = options.id;
			const dependencyId = options.dependsOn;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			if (!taskId || !dependencyId) {
				console.error(
					chalk.red('Error: Both --id and --depends-on are required')
				);
				process.exit(1);
			}

			// Handle subtask IDs correctly by preserving the string format for IDs containing dots
			// Only use parseInt for simple numeric IDs
			const formattedTaskId = taskId.includes('.')
				? taskId
				: parseInt(taskId, 10);
			const formattedDependencyId = dependencyId.includes('.')
				? dependencyId
				: parseInt(dependencyId, 10);

			await addDependency(tasksPath, formattedTaskId, formattedDependencyId, {
				projectRoot,
				tag
			});
		});

	// remove-dependency command
	programInstance
		.command('remove-dependency')
		.description('Remove a dependency from a task')
		.option('-i, --id <id>', 'Task ID to remove dependency from')
		.option('-d, --depends-on <id>', 'Task ID to remove as a dependency')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const taskId = options.id;
			const dependencyId = options.dependsOn;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			if (!taskId || !dependencyId) {
				console.error(
					chalk.red('Error: Both --id and --depends-on are required')
				);
				process.exit(1);
			}

			// Handle subtask IDs correctly by preserving the string format for IDs containing dots
			// Only use parseInt for simple numeric IDs
			const formattedTaskId = taskId.includes('.')
				? taskId
				: parseInt(taskId, 10);
			const formattedDependencyId = dependencyId.includes('.')
				? dependencyId
				: parseInt(dependencyId, 10);

			await removeDependency(
				tasksPath,
				formattedTaskId,
				formattedDependencyId,
				{
					projectRoot,
					tag
				}
			);
		});

	// validate-dependencies command
	programInstance
		.command('validate-dependencies')
		.description(
			`Identify invalid dependencies without fixing them${chalk.reset('')}`
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			await validateDependenciesCommand(options.file || TASKMASTER_TASKS_FILE, {
				context: { projectRoot, tag }
			});
		});

	// fix-dependencies command
	programInstance
		.command('fix-dependencies')
		.description(`Fix invalid dependencies automatically${chalk.reset('')}`)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			await fixDependenciesCommand(options.file || TASKMASTER_TASKS_FILE, {
				context: { projectRoot, tag }
			});
		});

	// complexity-report command
	programInstance
		.command('complexity-report')
		.description(`Display the complexity analysis report${chalk.reset('')}`)
		.option(
			'-f, --file <file>',
			'Path to the report file',
			COMPLEXITY_REPORT_FILE
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Use the provided tag, or the current active tag, or default to 'master'
			const targetTag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(targetTag);

			// Tag-aware report file naming: master -> task-complexity-report.json, other tags -> task-complexity-report_tagname.json
			const reportPath =
				options.file === COMPLEXITY_REPORT_FILE && targetTag !== 'master'
					? options.file.replace('.json', `_${targetTag}.json`)
					: options.file || COMPLEXITY_REPORT_FILE;

			await displayComplexityReport(reportPath);
		});

	// add-subtask command
	programInstance
		.command('add-subtask')
		.description('Add a subtask to an existing task')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('-p, --parent <id>', 'Parent task ID (required)')
		.option('-i, --task-id <id>', 'Existing task ID to convert to subtask')
		.option(
			'-t, --title <title>',
			'Title for the new subtask (when creating a new subtask)'
		)
		.option('-d, --description <text>', 'Description for the new subtask')
		.option('--details <text>', 'Implementation details for the new subtask')
		.option(
			'--dependencies <ids>',
			'Comma-separated list of dependency IDs for the new subtask'
		)
		.option('-s, --status <status>', 'Status for the new subtask', 'pending')
		.option('--skip-generate', 'Skip regenerating task files')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const parentId = options.parent;
			const existingTaskId = options.taskId;
			const generateFiles = !options.skipGenerate;

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			if (!parentId) {
				console.error(
					chalk.red(
						'Error: --parent parameter is required. Please provide a parent task ID.'
					)
				);
				showAddSubtaskHelp();
				process.exit(1);
			}

			// Parse dependencies if provided
			let dependencies = [];
			if (options.dependencies) {
				dependencies = options.dependencies.split(',').map((id) => {
					// Handle both regular IDs and dot notation
					return id.includes('.') ? id.trim() : parseInt(id.trim(), 10);
				});
			}

			try {
				if (existingTaskId) {
					// Convert existing task to subtask
					console.log(
						chalk.blue(
							`Converting task ${existingTaskId} to a subtask of ${parentId}...`
						)
					);
					await addSubtask(
						tasksPath,
						parentId,
						existingTaskId,
						null,
						generateFiles,
						{ projectRoot, tag }
					);
					console.log(
						chalk.green(
							`✓ Task ${existingTaskId} successfully converted to a subtask of task ${parentId}`
						)
					);
				} else if (options.title) {
					// Create new subtask with provided data
					console.log(
						chalk.blue(`Creating new subtask for parent task ${parentId}...`)
					);

					const newSubtaskData = {
						title: options.title,
						description: options.description || '',
						details: options.details || '',
						status: options.status || 'pending',
						dependencies: dependencies
					};

					const subtask = await addSubtask(
						tasksPath,
						parentId,
						null,
						newSubtaskData,
						generateFiles,
						{ projectRoot, tag }
					);
					console.log(
						chalk.green(
							`✓ New subtask ${parentId}.${subtask.id} successfully created`
						)
					);

					// Display success message and suggested next steps
					console.log(
						boxen(
							chalk.white.bold(
								`Subtask ${parentId}.${subtask.id} Added Successfully`
							) +
								'\n\n' +
								chalk.white(`Title: ${subtask.title}`) +
								'\n' +
								chalk.white(`Status: ${getStatusWithColor(subtask.status)}`) +
								'\n' +
								(dependencies.length > 0
									? chalk.white(`Dependencies: ${dependencies.join(', ')}`) +
										'\n'
									: '') +
								'\n' +
								chalk.white.bold('Next Steps:') +
								'\n' +
								chalk.cyan(
									`1. Run ${chalk.yellow(`task-master show ${parentId}`)} to see the parent task with all subtasks`
								) +
								'\n' +
								chalk.cyan(
									`2. Run ${chalk.yellow(`task-master set-status --id=${parentId}.${subtask.id} --status=in-progress`)} to start working on it`
								),
							{
								padding: 1,
								borderColor: 'green',
								borderStyle: 'round',
								margin: { top: 1 }
							}
						)
					);
				} else {
					console.error(
						chalk.red('Error: Either --task-id or --title must be provided.')
					);
					console.log(
						boxen(
							chalk.white.bold('Usage Examples:') +
								'\n\n' +
								chalk.white('Convert existing task to subtask:') +
								'\n' +
								chalk.yellow(
									`  task-master add-subtask --parent=5 --task-id=8`
								) +
								'\n\n' +
								chalk.white('Create new subtask:') +
								'\n' +
								chalk.yellow(
									`  task-master add-subtask --parent=5 --title="Implement login UI" --description="Create the login form"`
								) +
								'\n\n',
							{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
						)
					);
					process.exit(1);
				}
			} catch (error) {
				console.error(chalk.red(`Error: ${error.message}`));
				showAddSubtaskHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showAddSubtaskHelp();
			process.exit(1);
		});

	// Helper function to show add-subtask command help
	function showAddSubtaskHelp() {
		console.log(
			boxen(
				`${chalk.white.bold('Add Subtask Command Help')}\n\n${chalk.cyan('Usage:')}\n  task-master add-subtask --parent=<id> [options]\n\n${chalk.cyan('Options:')}\n  -p, --parent <id>         Parent task ID (required)\n  -i, --task-id <id>        Existing task ID to convert to subtask\n  -t, --title <title>       Title for the new subtask\n  -d, --description <text>  Description for the new subtask\n  --details <text>          Implementation details for the new subtask\n  --dependencies <ids>      Comma-separated list of dependency IDs\n  -s, --status <status>     Status for the new subtask (default: "pending")\n  -f, --file <file>         Path to the tasks file (default: "${TASKMASTER_TASKS_FILE}")\n  --skip-generate           Skip regenerating task files\n\n${chalk.cyan('Examples:')}\n  task-master add-subtask --parent=5 --task-id=8\n  task-master add-subtask -p 5 -t "Implement login UI" -d "Create the login form"`,
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// remove-subtask command
	programInstance
		.command('remove-subtask')
		.description('Remove a subtask from its parent task')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'-i, --id <id>',
			'Subtask ID(s) to remove in format "parentId.subtaskId" (can be comma-separated for multiple subtasks)'
		)
		.option(
			'-c, --convert',
			'Convert the subtask to a standalone task instead of deleting it'
		)
		.option('--skip-generate', 'Skip regenerating task files')
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const subtaskIds = options.id;
			const convertToTask = options.convert || false;
			const generateFiles = !options.skipGenerate;
			const tag = options.tag;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			if (!subtaskIds) {
				console.error(
					chalk.red(
						'Error: --id parameter is required. Please provide subtask ID(s) in format "parentId.subtaskId".'
					)
				);
				showRemoveSubtaskHelp();
				process.exit(1);
			}

			try {
				// Split by comma to support multiple subtask IDs
				const subtaskIdArray = subtaskIds.split(',').map((id) => id.trim());

				for (const subtaskId of subtaskIdArray) {
					// Validate subtask ID format
					if (!subtaskId.includes('.')) {
						console.error(
							chalk.red(
								`Error: Subtask ID "${subtaskId}" must be in format "parentId.subtaskId"`
							)
						);
						showRemoveSubtaskHelp();
						process.exit(1);
					}

					console.log(chalk.blue(`Removing subtask ${subtaskId}...`));
					if (convertToTask) {
						console.log(
							chalk.blue('The subtask will be converted to a standalone task')
						);
					}

					const result = await removeSubtask(
						tasksPath,
						subtaskId,
						convertToTask,
						generateFiles,
						{ projectRoot, tag }
					);

					if (convertToTask && result) {
						// Display success message and next steps for converted task
						console.log(
							boxen(
								chalk.white.bold(
									`Subtask ${subtaskId} Converted to Task #${result.id}`
								) +
									'\n\n' +
									chalk.white(`Title: ${result.title}`) +
									'\n' +
									chalk.white(`Status: ${getStatusWithColor(result.status)}`) +
									'\n' +
									chalk.white(
										`Dependencies: ${result.dependencies.join(', ')}`
									) +
									'\n\n' +
									chalk.white.bold('Next Steps:') +
									'\n' +
									chalk.cyan(
										`1. Run ${chalk.yellow(`task-master show ${result.id}`)} to see details of the new task`
									) +
									'\n' +
									chalk.cyan(
										`2. Run ${chalk.yellow(`task-master set-status --id=${result.id} --status=in-progress`)} to start working on it`
									),
								{
									padding: 1,
									borderColor: 'green',
									borderStyle: 'round',
									margin: { top: 1 }
								}
							)
						);
					} else {
						// Display success message for deleted subtask
						console.log(
							boxen(
								chalk.white.bold(`Subtask ${subtaskId} Removed`) +
									'\n\n' +
									chalk.white('The subtask has been successfully deleted.'),
								{
									padding: 1,
									borderColor: 'green',
									borderStyle: 'round',
									margin: { top: 1 }
								}
							)
						);
					}
				}
			} catch (error) {
				console.error(chalk.red(`Error: ${error.message}`));
				showRemoveSubtaskHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showRemoveSubtaskHelp();
			process.exit(1);
		});

	// Helper function to show remove-subtask command help
	function showRemoveSubtaskHelp() {
		console.log(
			boxen(
				chalk.white.bold('Remove Subtask Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master remove-subtask --id=<parentId.subtaskId> [options]\n\n` +
					chalk.cyan('Options:') +
					'\n' +
					'  -i, --id <id>       Subtask ID(s) to remove in format "parentId.subtaskId" (can be comma-separated, required)\n' +
					'  -c, --convert       Convert the subtask to a standalone task instead of deleting it\n' +
					'  -f, --file <file>   Path to the tasks file (default: "' +
					TASKMASTER_TASKS_FILE +
					'")\n' +
					'  --skip-generate     Skip regenerating task files\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master remove-subtask --id=5.2\n' +
					'  task-master remove-subtask --id=5.2,6.3,7.1\n' +
					'  task-master remove-subtask --id=5.2 --convert',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// Helper function to show tags command help
	function showTagsHelp() {
		console.log(
			boxen(
				chalk.white.bold('Tags Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master tags [options]\n\n` +
					chalk.cyan('Options:') +
					'\n' +
					'  -f, --file <file>   Path to the tasks file (default: "' +
					TASKMASTER_TASKS_FILE +
					'")\n' +
					'  --show-metadata     Show detailed metadata for each tag\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master tags\n' +
					'  task-master tags --show-metadata\n\n' +
					chalk.cyan('Related Commands:') +
					'\n' +
					'  task-master add-tag <name>      Create a new tag\n' +
					'  task-master use-tag <name>      Switch to a tag\n' +
					'  task-master delete-tag <name>   Delete a tag',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// Helper function to show add-tag command help
	function showAddTagHelp() {
		console.log(
			boxen(
				chalk.white.bold('Add Tag Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master add-tag <tagName> [options]\n\n` +
					chalk.cyan('Options:') +
					'\n' +
					'  -f, --file <file>        Path to the tasks file (default: "' +
					TASKMASTER_TASKS_FILE +
					'")\n' +
					'  --copy-from-current      Copy tasks from the current tag to the new tag\n' +
					'  --copy-from <tag>        Copy tasks from the specified tag to the new tag\n' +
					'  -d, --description <text> Optional description for the tag\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master add-tag feature-xyz\n' +
					'  task-master add-tag feature-xyz --copy-from-current\n' +
					'  task-master add-tag feature-xyz --copy-from master\n' +
					'  task-master add-tag feature-xyz -d "Feature XYZ development"',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// Helper function to show delete-tag command help
	function showDeleteTagHelp() {
		console.log(
			boxen(
				chalk.white.bold('Delete Tag Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master delete-tag <tagName> [options]\n\n` +
					chalk.cyan('Options:') +
					'\n' +
					'  -f, --file <file>   Path to the tasks file (default: "' +
					TASKMASTER_TASKS_FILE +
					'")\n' +
					'  -y, --yes           Skip confirmation prompts\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master delete-tag feature-xyz\n' +
					'  task-master delete-tag feature-xyz --yes\n\n' +
					chalk.yellow('Warning:') +
					'\n' +
					'  This will permanently delete the tag and all its tasks!',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// Helper function to show use-tag command help
	function showUseTagHelp() {
		console.log(
			boxen(
				chalk.white.bold('Use Tag Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master use-tag <tagName> [options]\n\n` +
					chalk.cyan('Options:') +
					'\n' +
					'  -f, --file <file>   Path to the tasks file (default: "' +
					TASKMASTER_TASKS_FILE +
					'")\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master use-tag feature-xyz\n' +
					'  task-master use-tag master\n\n' +
					chalk.cyan('Related Commands:') +
					'\n' +
					'  task-master tags                 List all available tags\n' +
					'  task-master add-tag <name>       Create a new tag',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// Helper function to show research command help
	function showResearchHelp() {
		console.log(
			boxen(
				chalk.white.bold('Research Command Help') +
					'\n\n' +
					chalk.cyan('Usage:') +
					'\n' +
					`  task-master research "<query>" [options]\n\n` +
					chalk.cyan('Required:') +
					'\n' +
					'  <query>             Research question or prompt (required)\n\n' +
					chalk.cyan('Context Options:') +
					'\n' +
					'  -i, --id <ids>      Comma-separated task/subtask IDs for context (e.g., "15,23.2")\n' +
					'  -f, --files <paths> Comma-separated file paths for context\n' +
					'  -c, --context <text> Additional custom context text\n' +
					'  --tree              Include project file tree structure\n\n' +
					chalk.cyan('Output Options:') +
					'\n' +
					'  -d, --detail <level> Detail level: low, medium, high (default: medium)\n' +
					'  --save-to <id>      Auto-save results to task/subtask ID (e.g., "15" or "15.2")\n' +
					'  --tag <tag>         Specify tag context for task operations\n\n' +
					chalk.cyan('Examples:') +
					'\n' +
					'  task-master research "How should I implement user authentication?"\n' +
					'  task-master research "What\'s the best approach?" --id=15,23.2\n' +
					'  task-master research "How does auth work?" --files=src/auth.js --tree\n' +
					'  task-master research "Implementation steps?" --save-to=15.2 --detail=high',
				{ padding: 1, borderColor: 'blue', borderStyle: 'round' }
			)
		);
	}

	// remove-task command
	programInstance
		.command('remove-task')
		.description('Remove one or more tasks or subtasks permanently')
		.option(
			'-i, --id <ids>',
			'ID(s) of the task(s) or subtask(s) to remove (e.g., "5", "5.2", or "5,6.1,7")'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('-y, --yes', 'Skip confirmation prompt', false)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const taskIdsString = options.id;

			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Resolve tag using standard pattern
			const tag = options.tag || getCurrentTag(projectRoot) || 'master';

			// Show current tag context
			displayCurrentTagIndicator(tag);

			if (!taskIdsString) {
				console.error(chalk.red('Error: Task ID(s) are required'));
				console.error(
					chalk.yellow(
						'Usage: task-master remove-task --id=<taskId1,taskId2...>'
					)
				);
				process.exit(1);
			}

			const taskIdsToRemove = taskIdsString
				.split(',')
				.map((id) => id.trim())
				.filter(Boolean);

			if (taskIdsToRemove.length === 0) {
				console.error(chalk.red('Error: No valid task IDs provided.'));
				process.exit(1);
			}

			try {
				// Read data once for checks and confirmation
				const data = readJSON(tasksPath, projectRoot, tag);
				if (!data || !data.tasks) {
					console.error(
						chalk.red(`Error: No valid tasks found in ${tasksPath}`)
					);
					process.exit(1);
				}

				const existingTasksToRemove = [];
				const nonExistentIds = [];
				let totalSubtasksToDelete = 0;
				const dependentTaskMessages = [];

				for (const taskId of taskIdsToRemove) {
					if (!taskExists(data.tasks, taskId)) {
						nonExistentIds.push(taskId);
					} else {
						// Correctly extract the task object from the result of findTaskById
						const findResult = findTaskById(data.tasks, taskId);
						const taskObject = findResult.task; // Get the actual task/subtask object

						if (taskObject) {
							existingTasksToRemove.push({ id: taskId, task: taskObject }); // Push the actual task object

							// If it's a main task, count its subtasks and check dependents
							if (!taskObject.isSubtask) {
								// Check the actual task object
								if (taskObject.subtasks && taskObject.subtasks.length > 0) {
									totalSubtasksToDelete += taskObject.subtasks.length;
								}
								const dependentTasks = data.tasks.filter(
									(t) =>
										t.dependencies &&
										t.dependencies.includes(parseInt(taskId, 10))
								);
								if (dependentTasks.length > 0) {
									dependentTaskMessages.push(
										`  - Task ${taskId}: ${dependentTasks.length} dependent tasks (${dependentTasks.map((t) => t.id).join(', ')})`
									);
								}
							}
						} else {
							// Handle case where findTaskById returned null for the task property (should be rare)
							nonExistentIds.push(`${taskId} (error finding details)`);
						}
					}
				}

				if (nonExistentIds.length > 0) {
					console.warn(
						chalk.yellow(
							`Warning: The following task IDs were not found: ${nonExistentIds.join(', ')}`
						)
					);
				}

				if (existingTasksToRemove.length === 0) {
					console.log(chalk.blue('No existing tasks found to remove.'));
					process.exit(0);
				}

				// Skip confirmation if --yes flag is provided
				if (!options.yes) {
					console.log();
					console.log(
						chalk.red.bold(
							`⚠️ WARNING: This will permanently delete the following ${existingTasksToRemove.length} item(s):`
						)
					);
					console.log();

					existingTasksToRemove.forEach(({ id, task }) => {
						if (!task) return; // Should not happen due to taskExists check, but safeguard
						if (task.isSubtask) {
							// Subtask - title is directly on the task object
							console.log(
								chalk.white(`  Subtask ${id}: ${task.title || '(no title)'}`)
							);
							// Optionally show parent context if available
							if (task.parentTask) {
								console.log(
									chalk.gray(
										`    (Parent: ${task.parentTask.id} - ${task.parentTask.title || '(no title)'})`
									)
								);
							}
						} else {
							// Main task - title is directly on the task object
							console.log(
								chalk.white.bold(`  Task ${id}: ${task.title || '(no title)'}`)
							);
						}
					});

					if (totalSubtasksToDelete > 0) {
						console.log(
							chalk.yellow(
								`⚠️ This will also delete ${totalSubtasksToDelete} subtasks associated with the selected main tasks!`
							)
						);
					}

					if (dependentTaskMessages.length > 0) {
						console.log(
							chalk.yellow(
								'⚠️ Warning: Dependencies on the following tasks will be removed:'
							)
						);
						dependentTaskMessages.forEach((msg) =>
							console.log(chalk.yellow(msg))
						);
					}

					console.log();

					const { confirm } = await inquirer.prompt([
						{
							type: 'confirm',
							name: 'confirm',
							message: chalk.red.bold(
								`Are you sure you want to permanently delete these ${existingTasksToRemove.length} item(s)?`
							),
							default: false
						}
					]);

					if (!confirm) {
						console.log(chalk.blue('Task deletion cancelled.'));
						process.exit(0);
					}
				}

				const indicator = startLoadingIndicator(
					`Removing ${existingTasksToRemove.length} task(s)/subtask(s)...`
				);

				// Use the string of existing IDs for the core function
				const existingIdsString = existingTasksToRemove
					.map(({ id }) => id)
					.join(',');
				const result = await removeTask(tasksPath, existingIdsString, {
					projectRoot,
					tag
				});

				stopLoadingIndicator(indicator);

				if (result.success) {
					console.log(
						boxen(
							chalk.green(
								`Successfully removed ${result.removedTasks.length} task(s)/subtask(s).`
							) +
								(result.message ? `\n\nDetails:\n${result.message}` : '') +
								(result.error
									? `\n\nWarnings:\n${chalk.yellow(result.error)}`
									: ''),
							{ padding: 1, borderColor: 'green', borderStyle: 'round' }
						)
					);
				} else {
					console.error(
						boxen(
							chalk.red(
								`Operation completed with errors. Removed ${result.removedTasks.length} task(s)/subtask(s).`
							) +
								(result.message ? `\n\nDetails:\n${result.message}` : '') +
								(result.error ? `\n\nErrors:\n${chalk.red(result.error)}` : ''),
							{
								padding: 1,
								borderColor: 'red',
								borderStyle: 'round'
							}
						)
					);
					process.exit(1); // Exit with error code if any part failed
				}

				// Log any initially non-existent IDs again for clarity
				if (nonExistentIds.length > 0) {
					console.warn(
						chalk.yellow(
							`Note: The following IDs were not found initially and were skipped: ${nonExistentIds.join(', ')}`
						)
					);

					// Exit with error if any removals failed
					if (result.removedTasks.length === 0) {
						process.exit(1);
					}
				}
			} catch (error) {
				console.error(
					chalk.red(`Error: ${error.message || 'An unknown error occurred'}`)
				);
				process.exit(1);
			}
		});

	// init command (Directly calls the implementation from init.js)
	programInstance
		.command('init')
		.description('Initialize a new project with Task Master structure')
		.option('-y, --yes', 'Skip prompts and use default values')
		.option('-n, --name <name>', 'Project name')
		.option('-d, --description <description>', 'Project description')
		.option('-v, --version <version>', 'Project version', '0.1.0') // Set default here
		.option('-a, --author <author>', 'Author name')
		.option(
			'-r, --rules <rules...>',
			'List of rules to add (roo, windsurf, cursor, ...). Accepts comma or space separated values.'
		)
		.option('--skip-install', 'Skip installing dependencies')
		.option('--dry-run', 'Show what would be done without making changes')
		.option('--aliases', 'Add shell aliases (tm, taskmaster)')
		.option('--no-aliases', 'Skip shell aliases (tm, taskmaster)')
		.option('--git', 'Initialize Git repository')
		.option('--no-git', 'Skip Git repository initialization')
		.option('--git-tasks', 'Store tasks in Git')
		.option('--no-git-tasks', 'No Git storage of tasks')
		.action(async (cmdOptions) => {
			// cmdOptions contains parsed arguments
			// Parse rules: accept space or comma separated, default to all available rules
			let selectedProfiles = RULE_PROFILES;
			let rulesExplicitlyProvided = false;

			if (cmdOptions.rules && Array.isArray(cmdOptions.rules)) {
				const userSpecifiedProfiles = cmdOptions.rules
					.flatMap((r) => r.split(','))
					.map((r) => r.trim())
					.filter(Boolean);
				// Only override defaults if user specified valid rules
				if (userSpecifiedProfiles.length > 0) {
					selectedProfiles = userSpecifiedProfiles;
					rulesExplicitlyProvided = true;
				}
			}

			cmdOptions.rules = selectedProfiles;
			cmdOptions.rulesExplicitlyProvided = rulesExplicitlyProvided;

			try {
				// Directly call the initializeProject function, passing the parsed options
				await initializeProject(cmdOptions);
				// initializeProject handles its own flow, including potential process.exit()
			} catch (error) {
				console.error(
					chalk.red(`Error during initialization: ${error.message}`)
				);
				process.exit(1);
			}
		});

	// models command
	programInstance
		.command('models')
		.description('Manage AI model configurations')
		.option(
			'--set-main <model_id>',
			'Set the primary model for task generation/updates'
		)
		.option(
			'--set-research <model_id>',
			'Set the model for research-backed operations'
		)
		.option(
			'--set-fallback <model_id>',
			'Set the model to use if the primary fails'
		)
		.option('--setup', 'Run interactive setup to configure models')
		.option(
			'--openrouter',
			'Allow setting a custom OpenRouter model ID (use with --set-*) '
		)
		.option(
			'--ollama',
			'Allow setting a custom Ollama model ID (use with --set-*) '
		)
		.option(
			'--bedrock',
			'Allow setting a custom Bedrock model ID (use with --set-*) '
		)
		.option(
			'--claude-code',
			'Allow setting a Claude Code model ID (use with --set-*)'
		)
		.option(
			'--azure',
			'Allow setting a custom Azure OpenAI model ID (use with --set-*) '
		)
		.option(
			'--vertex',
			'Allow setting a custom Vertex AI model ID (use with --set-*) '
		)
		.option(
			'--gemini-cli',
			'Allow setting a Gemini CLI model ID (use with --set-*)'
		)
		.addHelpText(
			'after',
			`
Examples:
  $ task-master models                              # View current configuration
  $ task-master models --set-main gpt-4o             # Set main model (provider inferred)
  $ task-master models --set-research sonar-pro       # Set research model
  $ task-master models --set-fallback claude-3-5-sonnet-20241022 # Set fallback
  $ task-master models --set-main my-custom-model --ollama  # Set custom Ollama model for main role
  $ task-master models --set-main anthropic.claude-3-sonnet-20240229-v1:0 --bedrock # Set custom Bedrock model for main role
  $ task-master models --set-main some/other-model --openrouter # Set custom OpenRouter model for main role
  $ task-master models --set-main sonnet --claude-code           # Set Claude Code model for main role
  $ task-master models --set-main gpt-4o --azure # Set custom Azure OpenAI model for main role
  $ task-master models --set-main claude-3-5-sonnet@20241022 --vertex # Set custom Vertex AI model for main role
  $ task-master models --set-main gemini-2.5-pro --gemini-cli # Set Gemini CLI model for main role
  $ task-master models --setup                            # Run interactive setup`
		)
		.action(async (options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}
			// Validate flags: cannot use multiple provider flags simultaneously
			const providerFlags = [
				options.openrouter,
				options.ollama,
				options.bedrock,
				options.claudeCode,
				options.geminiCli
			].filter(Boolean).length;
			if (providerFlags > 1) {
				console.error(
					chalk.red(
						'Error: Cannot use multiple provider flags (--openrouter, --ollama, --bedrock, --claude-code, --gemini-cli) simultaneously.'
					)
				);
				process.exit(1);
			}

			// Determine the primary action based on flags
			const isSetup = options.setup;
			const isSetOperation =
				options.setMain || options.setResearch || options.setFallback;

			// --- Execute Action ---

			if (isSetup) {
				// Action 1: Run Interactive Setup
				console.log(chalk.blue('Starting interactive model setup...')); // Added feedback
				try {
					await runInteractiveSetup(projectRoot);
					// runInteractiveSetup logs its own completion/error messages
				} catch (setupError) {
					console.error(
						chalk.red('\\nInteractive setup failed unexpectedly:'),
						setupError.message
					);
				}
				// --- IMPORTANT: Exit after setup ---
				return; // Stop execution here
			}

			if (isSetOperation) {
				// Action 2: Perform Direct Set Operations
				let updateOccurred = false; // Track if any update actually happened

				if (options.setMain) {
					const result = await setModel('main', options.setMain, {
						projectRoot,
						providerHint: options.openrouter
							? 'openrouter'
							: options.ollama
								? 'ollama'
								: options.bedrock
									? 'bedrock'
									: options.claudeCode
										? 'claude-code'
										: options.geminiCli
											? 'gemini-cli'
											: undefined
					});
					if (result.success) {
						console.log(chalk.green(`✅ ${result.data.message}`));
						if (result.data.warning)
							console.log(chalk.yellow(result.data.warning));
						updateOccurred = true;
					} else {
						console.error(
							chalk.red(`❌ Error setting main model: ${result.error.message}`)
						);
					}
				}
				if (options.setResearch) {
					const result = await setModel('research', options.setResearch, {
						projectRoot,
						providerHint: options.openrouter
							? 'openrouter'
							: options.ollama
								? 'ollama'
								: options.bedrock
									? 'bedrock'
									: options.claudeCode
										? 'claude-code'
										: options.geminiCli
											? 'gemini-cli'
											: undefined
					});
					if (result.success) {
						console.log(chalk.green(`✅ ${result.data.message}`));
						if (result.data.warning)
							console.log(chalk.yellow(result.data.warning));
						updateOccurred = true;
					} else {
						console.error(
							chalk.red(
								`❌ Error setting research model: ${result.error.message}`
							)
						);
					}
				}
				if (options.setFallback) {
					const result = await setModel('fallback', options.setFallback, {
						projectRoot,
						providerHint: options.openrouter
							? 'openrouter'
							: options.ollama
								? 'ollama'
								: options.bedrock
									? 'bedrock'
									: options.claudeCode
										? 'claude-code'
										: options.geminiCli
											? 'gemini-cli'
											: undefined
					});
					if (result.success) {
						console.log(chalk.green(`✅ ${result.data.message}`));
						if (result.data.warning)
							console.log(chalk.yellow(result.data.warning));
						updateOccurred = true;
					} else {
						console.error(
							chalk.red(
								`❌ Error setting fallback model: ${result.error.message}`
							)
						);
					}
				}

				// Optional: Add a final confirmation if any update occurred
				if (updateOccurred) {
					console.log(chalk.blue('\nModel configuration updated.'));
				} else {
					console.log(
						chalk.yellow(
							'\nNo model configuration changes were made (or errors occurred).'
						)
					);
				}

				// --- IMPORTANT: Exit after set operations ---
				return; // Stop execution here
			}

			// Action 3: Display Full Status (Only runs if no setup and no set flags)
			console.log(chalk.blue('Fetching current model configuration...')); // Added feedback
			const configResult = await getModelConfiguration({ projectRoot });
			const availableResult = await getAvailableModelsList({ projectRoot });
			const apiKeyStatusResult = await getApiKeyStatusReport({ projectRoot });

			// 1. Display Active Models
			if (!configResult.success) {
				console.error(
					chalk.red(
						`❌ Error fetching configuration: ${configResult.error.message}`
					)
				);
			} else {
				displayModelConfiguration(
					configResult.data,
					availableResult.data?.models || []
				);
			}

			// 2. Display API Key Status
			if (apiKeyStatusResult.success) {
				displayApiKeyStatus(apiKeyStatusResult.data.report);
			} else {
				console.error(
					chalk.yellow(
						`⚠️ Warning: Could not display API Key status: ${apiKeyStatusResult.error.message}`
					)
				);
			}

			// 3. Display Other Available Models (Filtered)
			if (availableResult.success) {
				const activeIds = configResult.success
					? [
							configResult.data.activeModels.main.modelId,
							configResult.data.activeModels.research.modelId,
							configResult.data.activeModels.fallback?.modelId
						].filter(Boolean)
					: [];
				const displayableAvailable = availableResult.data.models.filter(
					(m) => !activeIds.includes(m.modelId) && !m.modelId.startsWith('[')
				);
				displayAvailableModels(displayableAvailable);
			} else {
				console.error(
					chalk.yellow(
						`⚠️ Warning: Could not display available models: ${availableResult.error.message}`
					)
				);
			}

			// 4. Conditional Hint if Config File is Missing
			const configExists = isConfigFilePresent(projectRoot);
			if (!configExists) {
				console.log(
					chalk.yellow(
						"\\nHint: Run 'task-master models --setup' to create or update your configuration."
					)
				);
			}
			// --- IMPORTANT: Exit after displaying status ---
			return; // Stop execution here
		});

	// response-language command
	programInstance
		.command('lang')
		.description('Manage response language settings')
		.option('--response <response_language>', 'Set the response language')
		.option('--setup', 'Run interactive setup to configure response language')
		.action(async (options) => {
			const projectRoot = findProjectRoot(); // Find project root for context
			const { response, setup } = options;
			console.log(
				chalk.blue('Response language set to:', JSON.stringify(options))
			);
			let responseLanguage = response || 'English';
			if (setup) {
				console.log(
					chalk.blue('Starting interactive response language setup...')
				);
				try {
					const userResponse = await inquirer.prompt([
						{
							type: 'input',
							name: 'responseLanguage',
							message: 'Input your preferred response language',
							default: 'English'
						}
					]);

					console.log(
						chalk.blue(
							'Response language set to:',
							userResponse.responseLanguage
						)
					);
					responseLanguage = userResponse.responseLanguage;
				} catch (setupError) {
					console.error(
						chalk.red('\\nInteractive setup failed unexpectedly:'),
						setupError.message
					);
				}
			}

			const result = setResponseLanguage(responseLanguage, {
				projectRoot
			});

			if (result.success) {
				console.log(chalk.green(`✅ ${result.data.message}`));
			} else {
				console.error(
					chalk.red(
						`❌ Error setting response language: ${result.error.message}`
					)
				);
			}
		});

	// move-task command
	programInstance
		.command('move')
		.description('Move a task or subtask to a new position')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'--from <id>',
			'ID of the task/subtask to move (e.g., "5" or "5.2"). Can be comma-separated to move multiple tasks (e.g., "5,6,7")'
		)
		.option(
			'--to <id>',
			'ID of the destination (e.g., "7" or "7.3"). Must match the number of source IDs if comma-separated'
		)
		.option('--tag <tag>', 'Specify tag context for task operations')
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const sourceId = options.from;
			const destinationId = options.to;
			const tag = options.tag;

			if (!sourceId || !destinationId) {
				console.error(
					chalk.red('Error: Both --from and --to parameters are required')
				);
				console.log(
					chalk.yellow(
						'Usage: task-master move --from=<sourceId> --to=<destinationId>'
					)
				);
				process.exit(1);
			}

			// Find project root for tag resolution
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			// Check if we're moving multiple tasks (comma-separated IDs)
			const sourceIds = sourceId.split(',').map((id) => id.trim());
			const destinationIds = destinationId.split(',').map((id) => id.trim());

			// Validate that the number of source and destination IDs match
			if (sourceIds.length !== destinationIds.length) {
				console.error(
					chalk.red(
						'Error: The number of source and destination IDs must match'
					)
				);
				console.log(
					chalk.yellow('Example: task-master move --from=5,6,7 --to=10,11,12')
				);
				process.exit(1);
			}

			// If moving multiple tasks
			if (sourceIds.length > 1) {
				console.log(
					chalk.blue(
						`Moving multiple tasks: ${sourceIds.join(', ')} to ${destinationIds.join(', ')}...`
					)
				);

				try {
					// Read tasks data once to validate destination IDs
					const tasksData = readJSON(tasksPath, projectRoot, tag);
					if (!tasksData || !tasksData.tasks) {
						console.error(
							chalk.red(`Error: Invalid or missing tasks file at ${tasksPath}`)
						);
						process.exit(1);
					}

					// Move tasks one by one
					for (let i = 0; i < sourceIds.length; i++) {
						const fromId = sourceIds[i];
						const toId = destinationIds[i];

						// Skip if source and destination are the same
						if (fromId === toId) {
							console.log(
								chalk.yellow(`Skipping ${fromId} -> ${toId} (same ID)`)
							);
							continue;
						}

						console.log(
							chalk.blue(`Moving task/subtask ${fromId} to ${toId}...`)
						);
						try {
							await moveTask(
								tasksPath,
								fromId,
								toId,
								i === sourceIds.length - 1,
								{ projectRoot, tag }
							);
							console.log(
								chalk.green(
									`✓ Successfully moved task/subtask ${fromId} to ${toId}`
								)
							);
						} catch (error) {
							console.error(
								chalk.red(`Error moving ${fromId} to ${toId}: ${error.message}`)
							);
							// Continue with the next task rather than exiting
						}
					}
				} catch (error) {
					console.error(chalk.red(`Error: ${error.message}`));
					process.exit(1);
				}
			} else {
				// Moving a single task (existing logic)
				console.log(
					chalk.blue(`Moving task/subtask ${sourceId} to ${destinationId}...`)
				);

				try {
					const result = await moveTask(
						tasksPath,
						sourceId,
						destinationId,
						true,
						{ projectRoot, tag }
					);
					console.log(
						chalk.green(
							`✓ Successfully moved task/subtask ${sourceId} to ${destinationId}`
						)
					);
				} catch (error) {
					console.error(chalk.red(`Error: ${error.message}`));
					process.exit(1);
				}
			}
		});

	// Add/remove profile rules command
	programInstance
		.command('rules [action] [profiles...]')
		.description(
			`Add or remove rules for one or more profiles. Valid actions: ${Object.values(RULES_ACTIONS).join(', ')} (e.g., task-master rules ${RULES_ACTIONS.ADD} windsurf roo)`
		)
		.option(
			'-f, --force',
			'Skip confirmation prompt when removing rules (dangerous)'
		)
		.option(
			`--${RULES_SETUP_ACTION}`,
			'Run interactive setup to select rule profiles to add'
		)
		.addHelpText(
			'after',
			`
		Examples:
		$ task-master rules ${RULES_ACTIONS.ADD} windsurf roo          # Add Windsurf and Roo rule sets
		$ task-master rules ${RULES_ACTIONS.REMOVE} windsurf          # Remove Windsurf rule set
		$ task-master rules --${RULES_SETUP_ACTION}                  # Interactive setup to select rule profiles`
		)
		.action(async (action, profiles, options) => {
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(chalk.red('Error: Could not find project root.'));
				process.exit(1);
			}

			/**
			 * 'task-master rules --setup' action:
			 *
			 * Launches an interactive prompt to select which rule profiles to add to the current project.
			 * This does NOT perform project initialization or ask about shell aliases—only rules selection.
			 *
			 * Example usage:
			 *   $ task-master rules --setup
			 *
			 * Useful for adding rules after project creation.
			 *
			 * The list of profiles is always up-to-date with the available profiles.
			 */
			if (options[RULES_SETUP_ACTION]) {
				// Run interactive rules setup ONLY (no project init)
				const selectedRuleProfiles = await runInteractiveProfilesSetup();

				if (!selectedRuleProfiles || selectedRuleProfiles.length === 0) {
					console.log(chalk.yellow('No profiles selected. Exiting.'));
					return;
				}

				console.log(
					chalk.blue(
						`Installing ${selectedRuleProfiles.length} selected profile(s)...`
					)
				);

				for (let i = 0; i < selectedRuleProfiles.length; i++) {
					const profile = selectedRuleProfiles[i];
					console.log(
						chalk.blue(
							`Processing profile ${i + 1}/${selectedRuleProfiles.length}: ${profile}...`
						)
					);

					if (!isValidProfile(profile)) {
						console.warn(
							`Rule profile for "${profile}" not found. Valid profiles: ${RULE_PROFILES.join(', ')}. Skipping.`
						);
						continue;
					}
					const profileConfig = getRulesProfile(profile);

					const addResult = convertAllRulesToProfileRules(
						projectRoot,
						profileConfig
					);

					console.log(chalk.green(generateProfileSummary(profile, addResult)));
				}

				console.log(
					chalk.green(
						`\nCompleted installation of all ${selectedRuleProfiles.length} profile(s).`
					)
				);
				return;
			}

			// Validate action for non-setup mode
			if (!action || !isValidRulesAction(action)) {
				console.error(
					chalk.red(
						`Error: Invalid or missing action '${action || 'none'}'. Valid actions are: ${Object.values(RULES_ACTIONS).join(', ')}`
					)
				);
				console.error(
					chalk.yellow(
						`For interactive setup, use: task-master rules --${RULES_SETUP_ACTION}`
					)
				);
				process.exit(1);
			}

			if (!profiles || profiles.length === 0) {
				console.error(
					'Please specify at least one rule profile (e.g., windsurf, roo).'
				);
				process.exit(1);
			}

			// Support both space- and comma-separated profile lists
			const expandedProfiles = profiles
				.flatMap((b) => b.split(',').map((s) => s.trim()))
				.filter(Boolean);

			if (action === RULES_ACTIONS.REMOVE) {
				let confirmed = true;
				if (!options.force) {
					// Check if this removal would leave no profiles remaining
					if (wouldRemovalLeaveNoProfiles(projectRoot, expandedProfiles)) {
						const installedProfiles = getInstalledProfiles(projectRoot);
						confirmed = await confirmRemoveAllRemainingProfiles(
							expandedProfiles,
							installedProfiles
						);
					} else {
						confirmed = await confirmProfilesRemove(expandedProfiles);
					}
				}
				if (!confirmed) {
					console.log(chalk.yellow('Aborted: No rules were removed.'));
					return;
				}
			}

			const removalResults = [];
			const addResults = [];

			for (const profile of expandedProfiles) {
				if (!isValidProfile(profile)) {
					console.warn(
						`Rule profile for "${profile}" not found. Valid profiles: ${RULE_PROFILES.join(', ')}. Skipping.`
					);
					continue;
				}
				const profileConfig = getRulesProfile(profile);

				if (action === RULES_ACTIONS.ADD) {
					console.log(chalk.blue(`Adding rules for profile: ${profile}...`));
					const addResult = convertAllRulesToProfileRules(
						projectRoot,
						profileConfig
					);
					if (typeof profileConfig.onAddRulesProfile === 'function') {
						const assetsDir = path.join(projectRoot, 'assets');
						profileConfig.onAddRulesProfile(projectRoot, assetsDir);
					}
					console.log(
						chalk.blue(`Completed adding rules for profile: ${profile}`)
					);

					// Store result with profile name for summary
					addResults.push({
						profileName: profile,
						success: addResult.success,
						failed: addResult.failed
					});

					console.log(chalk.green(generateProfileSummary(profile, addResult)));
				} else if (action === RULES_ACTIONS.REMOVE) {
					console.log(chalk.blue(`Removing rules for profile: ${profile}...`));
					const result = removeProfileRules(projectRoot, profileConfig);
					removalResults.push(result);
					console.log(
						chalk.green(generateProfileRemovalSummary(profile, result))
					);
				} else {
					console.error(
						`Unknown action. Use "${RULES_ACTIONS.ADD}" or "${RULES_ACTIONS.REMOVE}".`
					);
					process.exit(1);
				}
			}

			// Print summary for additions
			if (action === RULES_ACTIONS.ADD && addResults.length > 0) {
				const {
					allSuccessfulProfiles,
					totalSuccess,
					totalFailed,
					simpleProfiles
				} = categorizeProfileResults(addResults);

				if (allSuccessfulProfiles.length > 0) {
					console.log(
						chalk.green(
							`\nSuccessfully added rules for: ${allSuccessfulProfiles.join(', ')}`
						)
					);

					// Create a more descriptive summary
					if (totalSuccess > 0 && simpleProfiles.length > 0) {
						console.log(
							chalk.green(
								`Total: ${totalSuccess} rules added, ${totalFailed} failed, ${simpleProfiles.length} integration guide(s) copied.`
							)
						);
					} else if (totalSuccess > 0) {
						console.log(
							chalk.green(
								`Total: ${totalSuccess} rules added, ${totalFailed} failed.`
							)
						);
					} else if (simpleProfiles.length > 0) {
						console.log(
							chalk.green(
								`Total: ${simpleProfiles.length} integration guide(s) copied.`
							)
						);
					}
				}
			}

			// Print summary for removals
			if (action === RULES_ACTIONS.REMOVE && removalResults.length > 0) {
				const {
					successfulRemovals,
					skippedRemovals,
					failedRemovals,
					removalsWithNotices
				} = categorizeRemovalResults(removalResults);

				if (successfulRemovals.length > 0) {
					console.log(
						chalk.green(
							`\nSuccessfully removed profiles for: ${successfulRemovals.join(', ')}`
						)
					);
				}
				if (skippedRemovals.length > 0) {
					console.log(
						chalk.yellow(
							`Skipped (default or protected): ${skippedRemovals.join(', ')}`
						)
					);
				}
				if (failedRemovals.length > 0) {
					console.log(chalk.red('\nErrors occurred:'));
					failedRemovals.forEach((r) => {
						console.log(chalk.red(`  ${r.profileName}: ${r.error}`));
					});
				}
				// Display notices about preserved files/configurations
				if (removalsWithNotices.length > 0) {
					console.log(chalk.cyan('\nNotices:'));
					removalsWithNotices.forEach((r) => {
						console.log(chalk.cyan(`  ${r.profileName}: ${r.notice}`));
					});
				}

				// Overall summary
				const totalProcessed = removalResults.length;
				const totalSuccessful = successfulRemovals.length;
				const totalSkipped = skippedRemovals.length;
				const totalFailed = failedRemovals.length;

				console.log(
					chalk.blue(
						`\nTotal: ${totalProcessed} profile(s) processed - ${totalSuccessful} removed, ${totalSkipped} skipped, ${totalFailed} failed.`
					)
				);
			}
		});

	programInstance
		.command('migrate')
		.description(
			'Migrate existing project to use the new .taskmaster directory structure'
		)
		.option(
			'-f, --force',
			'Force migration even if .taskmaster directory already exists'
		)
		.option(
			'--backup',
			'Create backup of old files before migration (default: false)',
			false
		)
		.option(
			'--cleanup',
			'Remove old files after successful migration (default: true)',
			true
		)
		.option('-y, --yes', 'Skip confirmation prompts')
		.option(
			'--dry-run',
			'Show what would be migrated without actually moving files'
		)
		.action(async (options) => {
			try {
				await migrateProject(options);
			} catch (error) {
				console.error(chalk.red('Error during migration:'), error.message);
				process.exit(1);
			}
		});

	// sync-readme command
	programInstance
		.command('sync-readme')
		.description('Sync the current task list to README.md in the project root')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--with-subtasks', 'Include subtasks in the README output')
		.option(
			'-s, --status <status>',
			'Show only tasks matching this status (e.g., pending, done)'
		)
		.action(async (options) => {
			const tasksPath = options.file || TASKMASTER_TASKS_FILE;
			const withSubtasks = options.withSubtasks || false;
			const status = options.status || null;

			// Find project root
			const projectRoot = findProjectRoot();
			if (!projectRoot) {
				console.error(
					chalk.red(
						'Error: Could not find project root. Make sure you are in a Task Master project directory.'
					)
				);
				process.exit(1);
			}

			console.log(
				chalk.blue(
					`📝 Syncing tasks to README.md${withSubtasks ? ' (with subtasks)' : ''}${status ? ` (status: ${status})` : ''}...`
				)
			);

			const success = await syncTasksToReadme(projectRoot, {
				withSubtasks,
				status,
				tasksPath
			});

			if (!success) {
				console.error(chalk.red('❌ Failed to sync tasks to README.md'));
				process.exit(1);
			}
		});

	// ===== TAG MANAGEMENT COMMANDS =====

	// add-tag command
	programInstance
		.command('add-tag')
		.description('Create a new tag context for organizing tasks')
		.argument(
			'[tagName]',
			'Name of the new tag to create (optional when using --from-branch)'
		)
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option(
			'--copy-from-current',
			'Copy tasks from the current tag to the new tag'
		)
		.option(
			'--copy-from <tag>',
			'Copy tasks from the specified tag to the new tag'
		)
		.option(
			'--from-branch',
			'Create tag name from current git branch (ignores tagName argument)'
		)
		.option('-d, --description <text>', 'Optional description for the tag')
		.action(async (tagName, options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					console.log(
						chalk.yellow(
							'Hint: Run task-master init or task-master parse-prd to create tasks.json first'
						)
					);
					process.exit(1);
				}

				// Validate that either tagName is provided or --from-branch is used
				if (!tagName && !options.fromBranch) {
					console.error(
						chalk.red(
							'Error: Either tagName argument or --from-branch option is required.'
						)
					);
					console.log(chalk.yellow('Usage examples:'));
					console.log(chalk.cyan('  task-master add-tag my-tag'));
					console.log(chalk.cyan('  task-master add-tag --from-branch'));
					process.exit(1);
				}

				const context = {
					projectRoot,
					commandName: 'add-tag',
					outputType: 'cli'
				};

				// Handle --from-branch option
				if (options.fromBranch) {
					const { createTagFromBranch } = await import(
						'./task-manager/tag-management.js'
					);
					const gitUtils = await import('./utils/git-utils.js');

					// Check if we're in a git repository
					if (!(await gitUtils.isGitRepository(projectRoot))) {
						console.error(
							chalk.red(
								'Error: Not in a git repository. Cannot use --from-branch option.'
							)
						);
						process.exit(1);
					}

					// Get current git branch
					const currentBranch = await gitUtils.getCurrentBranch(projectRoot);
					if (!currentBranch) {
						console.error(
							chalk.red('Error: Could not determine current git branch.')
						);
						process.exit(1);
					}

					// Create tag from branch
					const branchOptions = {
						copyFromCurrent: options.copyFromCurrent || false,
						copyFromTag: options.copyFrom,
						description:
							options.description ||
							`Tag created from git branch "${currentBranch}"`
					};

					await createTagFromBranch(
						tasksPath,
						currentBranch,
						branchOptions,
						context,
						'text'
					);
				} else {
					// Regular tag creation
					const createOptions = {
						copyFromCurrent: options.copyFromCurrent || false,
						copyFromTag: options.copyFrom,
						description: options.description
					};

					await createTag(tasksPath, tagName, createOptions, context, 'text');
				}

				// Handle auto-switch if requested
				if (options.autoSwitch) {
					const { useTag } = await import('./task-manager/tag-management.js');
					const finalTagName = options.fromBranch
						? (await import('./utils/git-utils.js')).sanitizeBranchNameForTag(
								await (await import('./utils/git-utils.js')).getCurrentBranch(
									projectRoot
								)
							)
						: tagName;
					await useTag(tasksPath, finalTagName, {}, context, 'text');
				}
			} catch (error) {
				console.error(chalk.red(`Error creating tag: ${error.message}`));
				showAddTagHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showAddTagHelp();
			process.exit(1);
		});

	// delete-tag command
	programInstance
		.command('delete-tag')
		.description('Delete an existing tag and all its tasks')
		.argument('<tagName>', 'Name of the tag to delete')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('-y, --yes', 'Skip confirmation prompts')
		.action(async (tagName, options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					process.exit(1);
				}

				const deleteOptions = {
					yes: options.yes || false
				};

				const context = {
					projectRoot,
					commandName: 'delete-tag',
					outputType: 'cli'
				};

				await deleteTag(tasksPath, tagName, deleteOptions, context, 'text');
			} catch (error) {
				console.error(chalk.red(`Error deleting tag: ${error.message}`));
				showDeleteTagHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showDeleteTagHelp();
			process.exit(1);
		});

	// tags command
	programInstance
		.command('tags')
		.description('List all available tags with metadata')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('--show-metadata', 'Show detailed metadata for each tag')
		.action(async (options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					process.exit(1);
				}

				const listOptions = {
					showTaskCounts: true,
					showMetadata: options.showMetadata || false
				};

				const context = {
					projectRoot,
					commandName: 'tags',
					outputType: 'cli'
				};

				await tags(tasksPath, listOptions, context, 'text');
			} catch (error) {
				console.error(chalk.red(`Error listing tags: ${error.message}`));
				showTagsHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showTagsHelp();
			process.exit(1);
		});

	// use-tag command
	programInstance
		.command('use-tag')
		.description('Switch to a different tag context')
		.argument('<tagName>', 'Name of the tag to switch to')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.action(async (tagName, options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					process.exit(1);
				}

				const context = {
					projectRoot,
					commandName: 'use-tag',
					outputType: 'cli'
				};

				await useTag(tasksPath, tagName, {}, context, 'text');
			} catch (error) {
				console.error(chalk.red(`Error switching tag: ${error.message}`));
				showUseTagHelp();
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			showUseTagHelp();
			process.exit(1);
		});

	// rename-tag command
	programInstance
		.command('rename-tag')
		.description('Rename an existing tag')
		.argument('<oldName>', 'Current name of the tag')
		.argument('<newName>', 'New name for the tag')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.action(async (oldName, newName, options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					process.exit(1);
				}

				const context = {
					projectRoot,
					commandName: 'rename-tag',
					outputType: 'cli'
				};

				await renameTag(tasksPath, oldName, newName, {}, context, 'text');
			} catch (error) {
				console.error(chalk.red(`Error renaming tag: ${error.message}`));
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			process.exit(1);
		});

	// copy-tag command
	programInstance
		.command('copy-tag')
		.description('Copy an existing tag to create a new tag with the same tasks')
		.argument('<sourceName>', 'Name of the source tag to copy from')
		.argument('<targetName>', 'Name of the new tag to create')
		.option(
			'-f, --file <file>',
			'Path to the tasks file',
			TASKMASTER_TASKS_FILE
		)
		.option('-d, --description <text>', 'Optional description for the new tag')
		.action(async (sourceName, targetName, options) => {
			try {
				const projectRoot = findProjectRoot();
				if (!projectRoot) {
					console.error(chalk.red('Error: Could not find project root.'));
					process.exit(1);
				}

				const tasksPath = path.resolve(projectRoot, options.file);

				// Validate tasks file exists
				if (!fs.existsSync(tasksPath)) {
					console.error(
						chalk.red(`Error: Tasks file not found at path: ${tasksPath}`)
					);
					process.exit(1);
				}

				const copyOptions = {
					description: options.description
				};

				const context = {
					projectRoot,
					commandName: 'copy-tag',
					outputType: 'cli'
				};

				await copyTag(
					tasksPath,
					sourceName,
					targetName,
					copyOptions,
					context,
					'text'
				);
			} catch (error) {
				console.error(chalk.red(`Error copying tag: ${error.message}`));
				process.exit(1);
			}
		})
		.on('error', function (err) {
			console.error(chalk.red(`Error: ${err.message}`));
			process.exit(1);
		});

	return programInstance;
}

/**
 * Setup the CLI application
 * @returns {Object} Configured Commander program
 */
function setupCLI() {
	// Create a new program instance
	const programInstance = program
		.name('dev')
		.description('AI-driven development task management')
		.version(() => {
			// Read version directly from package.json ONLY
			try {
				const packageJsonPath = path.join(process.cwd(), 'package.json');
				if (fs.existsSync(packageJsonPath)) {
					const packageJson = JSON.parse(
						fs.readFileSync(packageJsonPath, 'utf8')
					);
					return packageJson.version;
				}
			} catch (error) {
				// Silently fall back to 'unknown'
				log(
					'warn',
					'Could not read package.json for version info in .version()'
				);
			}
			return 'unknown'; // Default fallback if package.json fails
		})
		.helpOption('-h, --help', 'Display help')
		.addHelpCommand(false); // Disable default help command

	// Only override help for the main program, not for individual commands
	const originalHelpInformation =
		programInstance.helpInformation.bind(programInstance);
	programInstance.helpInformation = function () {
		// If this is being called for a subcommand, use the default Commander.js help
		if (this.parent && this.parent !== programInstance) {
			return originalHelpInformation();
		}
		// If this is the main program help, use our custom display
		displayHelp();
		return '';
	};

	// Register commands
	registerCommands(programInstance);

	return programInstance;
}

/**
 * Check for newer version of task-master-ai
 * @returns {Promise<{currentVersion: string, latestVersion: string, needsUpdate: boolean}>}
 */
async function checkForUpdate() {
	// Get current version from package.json ONLY
	const currentVersion = getTaskMasterVersion();

	return new Promise((resolve) => {
		// Get the latest version from npm registry
		const options = {
			hostname: 'registry.npmjs.org',
			path: '/task-master-ai',
			method: 'GET',
			headers: {
				Accept: 'application/vnd.npm.install-v1+json' // Lightweight response
			}
		};

		const req = https.request(options, (res) => {
			let data = '';

			res.on('data', (chunk) => {
				data += chunk;
			});

			res.on('end', () => {
				try {
					const npmData = JSON.parse(data);
					const latestVersion = npmData['dist-tags']?.latest || currentVersion;

					// Compare versions
					const needsUpdate =
						compareVersions(currentVersion, latestVersion) < 0;

					resolve({
						currentVersion,
						latestVersion,
						needsUpdate
					});
				} catch (error) {
					log('debug', `Error parsing npm response: ${error.message}`);
					resolve({
						currentVersion,
						latestVersion: currentVersion,
						needsUpdate: false
					});
				}
			});
		});

		req.on('error', (error) => {
			log('debug', `Error checking for updates: ${error.message}`);
			resolve({
				currentVersion,
				latestVersion: currentVersion,
				needsUpdate: false
			});
		});

		// Set a timeout to avoid hanging if npm is slow
		req.setTimeout(3000, () => {
			req.abort();
			log('debug', 'Update check timed out');
			resolve({
				currentVersion,
				latestVersion: currentVersion,
				needsUpdate: false
			});
		});

		req.end();
	});
}

/**
 * Compare semantic versions
 * @param {string} v1 - First version
 * @param {string} v2 - Second version
 * @returns {number} -1 if v1 < v2, 0 if v1 = v2, 1 if v1 > v2
 */
function compareVersions(v1, v2) {
	const v1Parts = v1.split('.').map((p) => parseInt(p, 10));
	const v2Parts = v2.split('.').map((p) => parseInt(p, 10));

	for (let i = 0; i < Math.max(v1Parts.length, v2Parts.length); i++) {
		const v1Part = v1Parts[i] || 0;
		const v2Part = v2Parts[i] || 0;

		if (v1Part < v2Part) return -1;
		if (v1Part > v2Part) return 1;
	}

	return 0;
}

/**
 * Display upgrade notification message
 * @param {string} currentVersion - Current version
 * @param {string} latestVersion - Latest version
 */
function displayUpgradeNotification(currentVersion, latestVersion) {
	const message = boxen(
		`${chalk.blue.bold('Update Available!')} ${chalk.dim(currentVersion)} → ${chalk.green(latestVersion)}\n\n` +
			`Run ${chalk.cyan('npm i task-master-ai@latest -g')} to update to the latest version with new features and bug fixes.`,
		{
			padding: 1,
			margin: { top: 1, bottom: 1 },
			borderColor: 'yellow',
			borderStyle: 'round'
		}
	);

	console.log(message);
}

/**
 * Parse arguments and run the CLI
 * @param {Array} argv - Command-line arguments
 */
async function runCLI(argv = process.argv) {
	try {
		// Display banner if not in a pipe
		if (process.stdout.isTTY) {
			displayBanner();
		}

		// If no arguments provided, show help
		if (argv.length <= 2) {
			displayHelp();
			process.exit(0);
		}

		// Start the update check in the background - don't await yet
		const updateCheckPromise = checkForUpdate();

		// Setup and parse
		// NOTE: getConfig() might be called during setupCLI->registerCommands if commands need config
		// This means the ConfigurationError might be thrown here if configuration file is missing.
		const programInstance = setupCLI();
		await programInstance.parseAsync(argv);

		// After command execution, check if an update is available
		const updateInfo = await updateCheckPromise;
		if (updateInfo.needsUpdate) {
			displayUpgradeNotification(
				updateInfo.currentVersion,
				updateInfo.latestVersion
			);
		}

		// Check if migration has occurred and show FYI notice once
		try {
			const projectRoot = findProjectRoot() || '.';
			const tasksPath = path.join(
				projectRoot,
				'.taskmaster',
				'tasks',
				'tasks.json'
			);
			const statePath = path.join(projectRoot, '.taskmaster', 'state.json');

			if (fs.existsSync(tasksPath)) {
				// Read raw file to check if it has master key (bypassing tag resolution)
				const rawData = fs.readFileSync(tasksPath, 'utf8');
				const parsedData = JSON.parse(rawData);

				if (parsedData && parsedData.master) {
					// Migration has occurred, check if we've shown the notice
					let stateData = { migrationNoticeShown: false };
					if (fs.existsSync(statePath)) {
						// Read state.json directly without tag resolution since it's not a tagged file
						const rawStateData = fs.readFileSync(statePath, 'utf8');
						stateData = JSON.parse(rawStateData) || stateData;
					}

					if (!stateData.migrationNoticeShown) {
						displayTaggedTasksFYI({ _migrationHappened: true });

						// Mark as shown
						stateData.migrationNoticeShown = true;
						// Write state.json directly without tag resolution since it's not a tagged file
						fs.writeFileSync(statePath, JSON.stringify(stateData, null, 2));
					}
				}
			}
		} catch (error) {
			// Silently ignore errors checking for migration notice
		}
	} catch (error) {
		// ** Specific catch block for missing configuration file **
		if (error instanceof ConfigurationError) {
			console.error(
				boxen(
					chalk.red.bold('Configuration Update Required!') +
						'\n\n' +
						chalk.white('Taskmaster now uses a ') +
						chalk.yellow.bold('configuration file') +
						chalk.white(
							' in your project for AI model choices and settings.\n\n' +
								'This file appears to be '
						) +
						chalk.red.bold('missing') +
						chalk.white('. No worries though.\n\n') +
						chalk.cyan.bold('To create this file, run the interactive setup:') +
						'\n' +
						chalk.green('   task-master models --setup') +
						'\n\n' +
						chalk.white.bold('Key Points:') +
						'\n' +
						chalk.white('*   ') +
						chalk.yellow.bold('Configuration file') +
						chalk.white(
							': Stores your AI model settings (do not manually edit)\n'
						) +
						chalk.white('*   ') +
						chalk.yellow.bold('.env & .mcp.json') +
						chalk.white(': Still used ') +
						chalk.red.bold('only') +
						chalk.white(' for your AI provider API keys.\n\n') +
						chalk.cyan(
							'`task-master models` to check your config & available models\n'
						) +
						chalk.cyan(
							'`task-master models --setup` to adjust the AI models used by Taskmaster'
						),
					{
						padding: 1,
						margin: { top: 1 },
						borderColor: 'red',
						borderStyle: 'round'
					}
				)
			);
		} else {
			// Generic error handling for other errors
			console.error(chalk.red(`Error: ${error.message}`));
			if (getDebugFlag()) {
				console.error(error);
			}
		}

		process.exit(1);
	}
}

export {
	registerCommands,
	setupCLI,
	runCLI,
	checkForUpdate,
	compareVersions,
	displayUpgradeNotification
};