import { execSync } from 'node:child_process';
import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import * as path from 'node:path';
import { dirname } from 'node:path';
import {
  defaultRunDirName,
  getMidsceneRunSubDir,
  logDir,
} from '@midscene/shared/common';
import {
  MIDSCENE_DEBUG_MODE,
  MIDSCENE_OPENAI_INIT_CONFIG_JSON,
  getAIConfig,
  getAIConfigInJson,
} from '@midscene/shared/env';
import { getRunningPkgInfo } from '@midscene/shared/fs';
import { assert, getGlobalScope } from '@midscene/shared/utils';
import { ifInBrowser, uuid } from '@midscene/shared/utils';
import type { Rect, ReportDumpWithAttributes } from './types';

let logEnvReady = false;

export const groupedActionDumpFileExt = 'web-dump.json';

export function getLogDir() {
  return logDir;
}

let reportTpl: string | null = null;
export function setReportTpl(tpl: string) {
  reportTpl = tpl;
}

function getReportTpl() {
  const globalScope = getGlobalScope();
  if (
    !reportTpl &&
    globalScope &&
    typeof (globalScope as any).get_midscene_report_tpl === 'function'
  ) {
    reportTpl = (globalScope as any).get_midscene_report_tpl();
    return reportTpl;
  }

  const __dirname = dirname(__filename);
  if (!reportTpl && !ifInBrowser) {
    const possiblePaths = [
      path.join(__dirname, '../../report/index.html'),
      path.join(__dirname, '../report/index.html'),
    ];

    for (const reportPath of possiblePaths) {
      if (existsSync(reportPath)) {
        reportTpl = readFileSync(reportPath, 'utf-8');
        break;
      }
    }
  }
  return reportTpl;
}

export function replaceStringWithFirstAppearance(
  str: string,
  target: string,
  replacement: string,
) {
  const index = str.indexOf(target);
  return str.slice(0, index) + replacement + str.slice(index + target.length);
}

export function reportHTMLContent(
  dumpData: string | ReportDumpWithAttributes[],
  reportPath?: string,
): string {
  const tpl = getReportTpl();
  if (!tpl) {
    console.warn('reportTpl is not set, will not write report');
    return '';
  }

  const dumpPlaceholder = '{{dump}}';

  // verify the template contains the placeholder
  if (!tpl.includes(dumpPlaceholder)) {
    console.warn('Template does not contain {{dump}} placeholder');
    return '';
  }

  // find the first placeholder position
  const placeholderIndex = tpl.indexOf(dumpPlaceholder);

  // split the template into two parts before and after the placeholder
  const firstPart = tpl.substring(0, placeholderIndex);
  const secondPart = tpl.substring(placeholderIndex + dumpPlaceholder.length);

  // if reportPath is set, it means we are in write to file mode
  const writeToFile = reportPath && !ifInBrowser;
  let resultContent = '';

  // helper function: decide to write to file or append to resultContent
  const appendOrWrite = (content: string): void => {
    if (writeToFile) {
      writeFileSync(reportPath!, `${content}\n`, {
        flag: 'a',
      });
    } else {
      resultContent += `${content}\n`;
    }
  };

  // if writeToFile is true, write the first part to file, otherwise set the first part to the initial value of resultContent
  if (writeToFile) {
    writeFileSync(reportPath!, firstPart, { flag: 'w' }); // use 'w' flag to overwrite the existing file
  } else {
    resultContent = firstPart;
  }

  // generate dump content
  // handle empty data or undefined
  if (
    (Array.isArray(dumpData) && dumpData.length === 0) ||
    typeof dumpData === 'undefined'
  ) {
    const dumpContent =
      '<script type="midscene_web_dump" type="application/json"></script>';
    appendOrWrite(dumpContent);
  }
  // handle string type dumpData
  else if (typeof dumpData === 'string') {
    const dumpContent =
      // biome-ignore lint/style/useTemplate: <explanation> do not use template string here, will cause bundle error
      '<script type="midscene_web_dump" type="application/json">\n' +
      dumpData +
      '\n</script>';
    appendOrWrite(dumpContent);
  }
  // handle array type dumpData
  else {
    // for array, handle each item
    for (let i = 0; i < dumpData.length; i++) {
      const { dumpString, attributes } = dumpData[i];
      const attributesArr = Object.keys(attributes || {}).map((key) => {
        return `${key}="${encodeURIComponent(attributes![key])}"`;
      });

      const dumpContent =
        // biome-ignore lint/style/useTemplate: <explanation> do not use template string here, will cause bundle error
        '<script type="midscene_web_dump" type="application/json" ' +
        attributesArr.join(' ') +
        '>\n' +
        dumpString +
        '\n</script>';
      appendOrWrite(dumpContent);
    }
  }

  // add the second part
  if (writeToFile) {
    writeFileSync(reportPath!, secondPart, { flag: 'a' });
    return reportPath!;
  }

  resultContent += secondPart;
  return resultContent;
}

export function writeDumpReport(
  fileName: string,
  dumpData: string | ReportDumpWithAttributes[],
): string | null {
  if (ifInBrowser) {
    console.log('will not write report in browser');
    return null;
  }

  const __dirname = dirname(__filename);
  const midscenePkgInfo = getRunningPkgInfo(__dirname);
  if (!midscenePkgInfo) {
    console.warn('midscenePkgInfo not found, will not write report');
    return null;
  }

  const reportPath = path.join(
    getMidsceneRunSubDir('report'),
    `${fileName}.html`,
  );

  reportHTMLContent(dumpData, reportPath);

  if (process.env.MIDSCENE_DEBUG_LOG_JSON) {
    writeFileSync(
      `${reportPath}.json`,
      typeof dumpData === 'string'
        ? dumpData
        : JSON.stringify(dumpData, null, 2),
    );
  }

  return reportPath;
}

export function writeLogFile(opts: {
  fileName: string;
  fileExt: string;
  fileContent: string;
  type: 'dump' | 'cache' | 'report' | 'tmp';
  generateReport?: boolean;
}) {
  if (ifInBrowser) {
    return '/mock/report.html';
  }
  const { fileName, fileExt, fileContent, type = 'dump' } = opts;
  const targetDir = getMidsceneRunSubDir(type);
  // Ensure directory exists
  if (!logEnvReady) {
    assert(targetDir, 'logDir should be set before writing dump file');

    // gitIgnore in the parent directory
    const gitIgnorePath = path.join(targetDir, '../../.gitignore');
    const gitPath = path.join(targetDir, '../../.git');
    let gitIgnoreContent = '';

    if (existsSync(gitPath)) {
      // if the git path exists, we need to add the log folder to the git ignore file
      if (existsSync(gitIgnorePath)) {
        gitIgnoreContent = readFileSync(gitIgnorePath, 'utf-8');
      }

      // ignore the log folder
      if (!gitIgnoreContent.includes(`${defaultRunDirName}/`)) {
        writeFileSync(
          gitIgnorePath,
          `${gitIgnoreContent}\n# Midscene.js dump files\n${defaultRunDirName}/dump\n${defaultRunDirName}/report\n${defaultRunDirName}/tmp\n${defaultRunDirName}/log\n`,
          'utf-8',
        );
      }
    }

    logEnvReady = true;
  }

  const filePath = path.join(targetDir, `${fileName}.${fileExt}`);

  if (type !== 'dump') {
    // do not write dump file any more
    writeFileSync(filePath, fileContent);
  }

  if (opts?.generateReport) {
    return writeDumpReport(fileName, fileContent);
  }

  return filePath;
}

export function getTmpDir(): string | null {
  try {
    const runningPkgInfo = getRunningPkgInfo();
    if (!runningPkgInfo) {
      return null;
    }
    const { name } = runningPkgInfo;
    const tmpPath = path.join(tmpdir(), name);
    mkdirSync(tmpPath, { recursive: true });
    return tmpPath;
  } catch (e) {
    return null;
  }
}

export function getTmpFile(fileExtWithoutDot: string): string | null {
  if (ifInBrowser) {
    return null;
  }
  const tmpDir = getTmpDir();
  const filename = `${uuid()}.${fileExtWithoutDot}`;
  return path.join(tmpDir!, filename);
}

export function overlapped(container: Rect, target: Rect) {
  // container and the target have some part overlapped
  return (
    container.left < target.left + target.width &&
    container.left + container.width > target.left &&
    container.top < target.top + target.height &&
    container.top + container.height > target.top
  );
}

export async function sleep(ms: number) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

export function replacerForPageObject(key: string, value: any) {
  if (value && value.constructor?.name === 'Page') {
    return '[Page object]';
  }
  if (value && value.constructor?.name === 'Browser') {
    return '[Browser object]';
  }
  return value;
}

export function stringifyDumpData(data: any, indents?: number) {
  return JSON.stringify(data, replacerForPageObject, indents);
}

declare const __VERSION__: string;

export function getVersion() {
  return __VERSION__;
}

function debugLog(...message: any[]) {
  const debugMode = getAIConfig(MIDSCENE_DEBUG_MODE);
  if (debugMode) {
    console.log('[Midscene]', ...message);
  }
}

let lastReportedRepoUrl = '';
export function uploadTestInfoToServer({ testUrl }: { testUrl: string }) {
  let repoUrl = '';
  let userEmail = '';

  const extraConfig = getAIConfigInJson(MIDSCENE_OPENAI_INIT_CONFIG_JSON);
  const serverUrl = extraConfig?.REPORT_SERVER_URL;

  try {
    repoUrl = execSync('git config --get remote.origin.url').toString().trim();
    userEmail = execSync('git config --get user.email').toString().trim();
  } catch (error) {
    debugLog('Failed to get git info:', error);
  }

  // Only upload test info if:
  // 1. Server URL is configured AND
  // 2. Either:
  //    - We have a repo URL that's different from last reported one (to avoid duplicate reports)
  //    - OR we don't have a repo URL but have a test URL (for non-git environments)
  if (
    serverUrl &&
    ((repoUrl && repoUrl !== lastReportedRepoUrl) || (!repoUrl && testUrl))
  ) {
    debugLog('Uploading test info to server', {
      serverUrl,
      repoUrl,
      testUrl,
      userEmail,
    });

    fetch(serverUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        repo_url: repoUrl,
        test_url: testUrl,
        user_email: userEmail,
      }),
    })
      .then((response) => response.json())
      .then((data) => {
        debugLog('Successfully uploaded test info to server:', data);
      })
      .catch((error) =>
        debugLog('Failed to upload test info to server:', error),
      );
    lastReportedRepoUrl = repoUrl;
  }
}