const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');
const rimraf = require('rimraf');

// Get all files in src/utils directory
const utilsDir = path.join(__dirname, '..', 'src', 'utils');
const files = fs.readdirSync(utilsDir);

// Also get files directly in src directory (excluding utils directory)
const srcDir = path.join(__dirname, '..', 'src');
const srcFiles = fs.readdirSync(srcDir).filter(file => 
  file !== 'utils' && file.endsWith('.js')
);

// Create dist directory if it doesn't exist
const distDir = path.join(__dirname, '..', 'dist');
if (!fs.existsSync(distDir)) {
  fs.mkdirSync(distDir, { recursive: true });
}

// Clean up any previous temporary directories
const tempDir = path.join(__dirname, '..', 'temp_modules');
if (fs.existsSync(tempDir)) {
  rimraf.sync(tempDir);
}

// Create temporary directory
fs.mkdirSync(tempDir, { recursive: true });

console.log('Building main package...');
execSync('npm run build', { stdio: 'inherit' });

// Process each module file in utils
files.forEach(file => {
  if (file.endsWith('.js')) {
    const moduleName = path.basename(file, '.js');
    const moduleDir = path.join(tempDir, moduleName);
    
    // Create module-specific directory
    fs.mkdirSync(moduleDir, { recursive: true });
    
    // Create a module-specific package.json
    const packageJson = {
      name: `@haina/${moduleName}`,
      version: require('../package.json').version,
      description: `Haina ${moduleName} module - part of @haina/npm utility library`,
      main: `cjs/utils/${file}`,
      module: `esm/utils/${file}`,
      type: 'module',
      files: [
        "build"
      ],
      scripts: {
        postinstall: "node -e \"console.log('This is a sub-module of @haina/npm. For full documentation, see https://github.com/your-repo/haina-npm')\""
      }
    };
    
    fs.writeFileSync(
      path.join(moduleDir, 'package.json'),
      JSON.stringify(packageJson, null, 2)
    );
    
    // Copy README if exists
    const readmePath = path.join(__dirname, '..', 'README.MD');
    if (fs.existsSync(readmePath)) {
      const readmeContent = fs.readFileSync(readmePath, 'utf8');
      // Add module-specific information to README
      const moduleReadmeContent = `# @haina/${moduleName}\n\n${readmeContent}\n\n## Note\n\nThis is a standalone module from the \`@haina/npm\` package. \n\nFor more information about the full package, visit the [original repository](https://github.com/your-repo/haina-npm).\n`;
      fs.writeFileSync(path.join(moduleDir, 'README.MD'), moduleReadmeContent);
    }
    
    // Create build directories and copy built files
    const moduleBuildDir = path.join(moduleDir, 'build');
    fs.mkdirSync(moduleBuildDir, { recursive: true });
    
    // Copy the built ESM and CJS versions of the module
    const esmSrcDir = path.join(__dirname, '..', 'build', 'esm', 'utils');
    const cjsSrcDir = path.join(__dirname, '..', 'build', 'cjs', 'utils');
    const esmDestDir = path.join(moduleBuildDir, 'esm', 'utils');
    const cjsDestDir = path.join(moduleBuildDir, 'cjs', 'utils');
    
    fs.mkdirSync(esmDestDir, { recursive: true });
    fs.mkdirSync(cjsDestDir, { recursive: true });
    
    // Copy the specific module file
    fs.copyFileSync(
      path.join(esmSrcDir, file),
      path.join(esmDestDir, file)
    );
    
    fs.copyFileSync(
      path.join(cjsSrcDir, file),
      path.join(cjsDestDir, file)
    );
    
    // Run npm pack in the module directory
    console.log(`Packing module: ${moduleName}`);
    const result = execSync(`cd "${moduleDir}" && npm pack`, { encoding: 'utf8' });
    console.log(result);
    
    // Move the resulting .tgz file to the main dist directory
    const tgzFiles = fs.readdirSync(moduleDir).filter(f => f.endsWith('.tgz'));
    tgzFiles.forEach(tgzFile => {
      const srcPath = path.join(moduleDir, tgzFile);
      const destPath = path.join(distDir, `${moduleName}-${require('../package.json').version.replace(/v/, '')}.tgz`);
      fs.renameSync(srcPath, destPath);
      console.log(`Created: ${path.basename(destPath)}`);
    });
  }
});

// Process each file directly in src directory
srcFiles.forEach(file => {
  if (file.endsWith('.js')) {
    const moduleName = path.basename(file, '.js');
    const moduleDir = path.join(tempDir, moduleName);
    
    // Create module-specific directory
    fs.mkdirSync(moduleDir, { recursive: true });
    
    // Create a module-specific package.json
    const packageJson = {
      name: `@haina/${moduleName}`,
      version: require('../package.json').version,
      description: `Haina ${moduleName} module - part of @haina/npm utility library`,
      main: `cjs/${file}`,
      module: `esm/${file}`,
      type: 'module',
      files: [
        "build"
      ],
      scripts: {
        postinstall: "node -e \"console.log('This is a sub-module of @haina/npm. For full documentation, see https://github.com/your-repo/haina-npm')\""
      }
    };
    
    fs.writeFileSync(
      path.join(moduleDir, 'package.json'),
      JSON.stringify(packageJson, null, 2)
    );
    
    // Copy README if exists
    const readmePath = path.join(__dirname, '..', 'README.MD');
    if (fs.existsSync(readmePath)) {
      const readmeContent = fs.readFileSync(readmePath, 'utf8');
      // Add module-specific information to README
      const moduleReadmeContent = `# @haina/${moduleName}\n\n${readmeContent}\n\n## Note\n\nThis is a standalone module from the \`@haina/npm\` package. \n\nFor more information about the full package, visit the [original repository](https://github.com/your-repo/haina-npm).\n`;
      fs.writeFileSync(path.join(moduleDir, 'README.MD'), moduleReadmeContent);
    }
    
    // Create build directories and copy built files
    const moduleBuildDir = path.join(moduleDir, 'build');
    fs.mkdirSync(moduleBuildDir, { recursive: true });
    
    // Copy the built ESM and CJS versions of the module
    const esmSrcDir = path.join(__dirname, '..', 'build', 'esm');
    const cjsSrcDir = path.join(__dirname, '..', 'build', 'cjs');
    const esmDestDir = path.join(moduleBuildDir, 'esm');
    const cjsDestDir = path.join(moduleBuildDir, 'cjs');
    
    fs.mkdirSync(esmDestDir, { recursive: true });
    fs.mkdirSync(cjsDestDir, { recursive: true });
    
    // Copy the specific module file
    fs.copyFileSync(
      path.join(esmSrcDir, file),
      path.join(esmDestDir, file)
    );
    
    fs.copyFileSync(
      path.join(cjsSrcDir, file),
      path.join(cjsDestDir, file)
    );
    
    // Run npm pack in the module directory
    console.log(`Packing module: ${moduleName}`);
    const result = execSync(`cd "${moduleDir}" && npm pack`, { encoding: 'utf8' });
    console.log(result);
    
    // Move the resulting .tgz file to the main dist directory
    const tgzFiles = fs.readdirSync(moduleDir).filter(f => f.endsWith('.tgz'));
    tgzFiles.forEach(tgzFile => {
      const srcPath = path.join(moduleDir, tgzFile);
      const destPath = path.join(distDir, `${moduleName}-${require('../package.json').version.replace(/v/, '')}.tgz`);
      fs.renameSync(srcPath, destPath);
      console.log(`Created: ${path.basename(destPath)}`);
    });
  }
});

// Clean up temporary directory
rimraf.sync(tempDir);

console.log('Module packing completed!');