'use strict';

// FIXME
/* eslint-disable import/extensions */

const { join } = require('path');
const fse = require('fs-extra');
const chalk = require('chalk');
const execa = require('execa');
const ora = require('ora');
const _ = require('lodash');

const stopProcess = require('./utils/stop-process');
const { trackUsage, captureStderr } = require('./utils/usage');
const mergeTemplate = require('./utils/merge-template.js');

const packageJSON = require('./resources/json/common/package.json');
const createDatabaseConfig = require('./resources/templates/database.js');
const createEnvFile = require('./resources/templates/env.js');

module.exports = async function createProject(scope, { client, connection, dependencies }) {
  console.log(`Creating a new Strapi application at ${chalk.green(scope.rootPath)}.`);
  console.log('Creating files.');

  const { rootPath, useTypescript } = scope;
  const resources = join(__dirname, 'resources');

  const language = useTypescript ? 'ts' : 'js';

  try {
    // copy files
    await fse.copy(join(resources, 'files', language), rootPath);

    // copy dot files
    await fse.writeFile(join(rootPath, '.env'), createEnvFile());

    const copyDotFilesFromSubDirectory = (subDirectory) => {
      const files = fse.readdirSync(join(resources, 'dot-files', subDirectory));

      return Promise.all(
        files.map((file) => {
          const src = join(resources, 'dot-files', subDirectory, file);
          const dest = join(rootPath, `.${file}`);
          return fse.copy(src, dest);
        })
      );
    };

    // Copy common dot files
    copyDotFilesFromSubDirectory('common');

    // Copy JS dot files
    // For now we only support javascript and typescript, so if we're not using
    // typescript, then we can assume we're using javascript. We'll need to change
    // this behavior when we'll abstract the supported languages even more.
    if (!useTypescript) {
      copyDotFilesFromSubDirectory('js');
    }

    await trackUsage({ event: 'didCopyProjectFiles', scope });

    // copy templates
    await fse.writeJSON(
      join(rootPath, 'package.json'),
      packageJSON({
        strapiDependencies: scope.strapiDependencies,
        additionalsDependencies: dependencies,
        strapiVersion: scope.strapiVersion,
        projectName: _.kebabCase(scope.name),
        uuid: scope.uuid,
        packageJsonStrapi: scope.packageJsonStrapi,
      }),
      {
        spaces: 2,
      }
    );

    await trackUsage({ event: 'didWritePackageJSON', scope });

    if (useTypescript) {
      const tsJSONDir = join(__dirname, 'resources', 'json', 'ts');
      const filesMap = {
        'tsconfig-admin.json.js': 'src/admin',
        'tsconfig-server.json.js': '.',
      };

      for (const [fileName, path] of Object.entries(filesMap)) {
        const srcPath = join(tsJSONDir, fileName);
        const destPath = join(rootPath, path, 'tsconfig.json');

        const json = require(srcPath)();

        await fse.writeJSON(destPath, json, { spaces: 2 });
      }
    }

    // ensure node_modules is created
    await fse.ensureDir(join(rootPath, 'node_modules'));

    // create config/database
    await fse.writeFile(
      join(rootPath, `config/database.${language}`),
      createDatabaseConfig({
        client,
        connection,
        useTypescript,
      })
    );

    await trackUsage({ event: 'didCopyConfigurationFiles', scope });

    // merge template files if a template is specified
    const hasTemplate = Boolean(scope.template);
    if (hasTemplate) {
      try {
        await mergeTemplate(scope, rootPath);
      } catch (error) {
        throw new Error(`⛔️ Template installation failed: ${error.message}`);
      }
    }
  } catch (err) {
    await fse.remove(scope.rootPath);
    throw err;
  }

  await trackUsage({ event: 'willInstallProjectDependencies', scope });

  const installPrefix = chalk.yellow('Installing dependencies:');
  const loader = ora(installPrefix).start();

  const logInstall = (chunk = '') => {
    loader.text = `${installPrefix} ${chunk.toString().split('\n').join(' ')}`;
  };

  try {
    if (scope.installDependencies !== false) {
      const runner = runInstall(scope);

      runner.stdout.on('data', logInstall);
      runner.stderr.on('data', logInstall);

      await runner;
    }

    loader.stop();
    console.log(`Dependencies installed ${chalk.green('successfully')}.`);

    await trackUsage({ event: 'didInstallProjectDependencies', scope });
  } catch (error) {
    loader.stop();
    await trackUsage({
      event: 'didNotInstallProjectDependencies',
      scope,
      error: error.stderr.slice(-1024),
    });

    console.error(`${chalk.red('Error')} while installing dependencies:`);
    console.error(error.stderr);

    await captureStderr('didNotInstallProjectDependencies', error);

    console.log(chalk.black.bgWhite(' Keep trying!             '));
    console.log();
    console.log(
      chalk.bold(
        'Oh, it seems that you encountered errors while installing dependencies in your project.'
      )
    );
    console.log(`Don't give up, your project was created correctly.`);
    console.log(
      `Fix the issues mentioned in the installation errors and try to run the following command:`
    );
    console.log();
    console.log(
      `cd ${chalk.green(rootPath)} && ${chalk.cyan(scope.useYarn ? 'yarn' : 'npm')} install`
    );
    console.log();

    stopProcess();
  }

  await trackUsage({ event: 'didCreateProject', scope });

  console.log();
  console.log(`Your application was created at ${chalk.green(rootPath)}.\n`);

  const cmd = chalk.cyan(scope.useYarn ? 'yarn' : 'npm run');

  console.log('Available commands in your project:');
  console.log();
  console.log(`  ${cmd} develop`);
  console.log(
    '  Start Strapi in watch mode. (Changes in Strapi project files will trigger a server restart)'
  );
  console.log();
  console.log(`  ${cmd} start`);
  console.log('  Start Strapi without watch mode.');
  console.log();
  console.log(`  ${cmd} build`);
  console.log('  Build Strapi admin panel.');
  console.log();
  console.log(`  ${cmd} strapi`);
  console.log(`  Display all available commands.`);
  console.log();
  console.log('You can start by doing:');
  console.log();
  console.log(`  ${chalk.cyan('cd')} ${rootPath}`);
  console.log(`  ${cmd} develop`);
  console.log();
};

const installArguments = ['install', '--production', '--no-optional'];
function runInstall({ rootPath, useYarn }) {
  if (useYarn) {
    // Increase timeout for slow internet connections.
    installArguments.push('--network-timeout 1000000');

    return execa('yarnpkg', installArguments, {
      cwd: rootPath,
      stdin: 'ignore',
    });
  }

  return execa('npm', installArguments, { cwd: rootPath, stdin: 'ignore' });
}