#!/usr/bin/env node

/**
 * PHP与NestJS项目自动映射检查器
 * 检查PHP项目与NestJS项目的模块、控制器、服务等对应关系
 */

const fs = require('fs');
const path = require('path');

class AutoMappingChecker {
  constructor() {
    this.projectRoot = process.cwd();
    this.phpPath = path.join(this.projectRoot, 'niucloud-php/niucloud');
    this.nestjsPath = path.join(this.projectRoot, 'wwjcloud/src');
    this.results = {
      modules: [],
      controllers: [],
      services: [],
      models: [],
      summary: {
        total: 0,
        matched: 0,
        missing: 0
      }
    };
  }

  /**
   * 检查目录是否存在
   */
  checkDirectories() {
    if (!fs.existsSync(this.phpPath)) {
      console.error('❌ PHP项目路径不存在:', this.phpPath);
      return false;
    }
    if (!fs.existsSync(this.nestjsPath)) {
      console.error('❌ NestJS项目路径不存在:', this.nestjsPath);
      return false;
    }
    return true;
  }

  /**
   * 获取PHP控制器列表
   */
  getPhpControllers() {
    const controllers = [];
    const adminApiPath = path.join(this.phpPath, 'app/adminapi/controller');
    const apiPath = path.join(this.phpPath, 'app/api/controller');

    // 扫描管理端控制器
    if (fs.existsSync(adminApiPath)) {
      this.scanPhpControllers(adminApiPath, 'adminapi', controllers);
    }

    // 扫描前台控制器
    if (fs.existsSync(apiPath)) {
      this.scanPhpControllers(apiPath, 'api', controllers);
    }

    return controllers;
  }

  /**
   * 扫描PHP控制器
   */
  scanPhpControllers(dir, type, controllers) {
    const entries = fs.readdirSync(dir, { withFileTypes: true });
    
    for (const entry of entries) {
      const fullPath = path.join(dir, entry.name);
      
      if (entry.isDirectory()) {
        // 递归扫描子目录
        this.scanPhpControllers(fullPath, type, controllers);
      } else if (entry.isFile() && entry.name.endsWith('.php')) {
        const relativePath = path.relative(path.join(this.phpPath, 'app', type, 'controller'), fullPath);
        const modulePath = path.dirname(relativePath);
        const fileName = path.basename(entry.name, '.php');
        
        controllers.push({
          type,
          module: modulePath === '.' ? 'root' : modulePath,
          name: fileName,
          phpPath: fullPath,
          relativePath
        });
      }
    }
  }

  /**
   * 获取NestJS控制器列表
   */
  getNestjsControllers() {
    const controllers = [];
    const commonPath = path.join(this.nestjsPath, 'common');

    if (!fs.existsSync(commonPath)) {
      return controllers;
    }

    const modules = fs.readdirSync(commonPath, { withFileTypes: true })
      .filter(entry => entry.isDirectory())
      .map(entry => entry.name);

    for (const module of modules) {
      const modulePath = path.join(commonPath, module);
      
      // 检查adminapi控制器
      const adminApiPath = path.join(modulePath, 'controllers/adminapi');
      if (fs.existsSync(adminApiPath)) {
        this.scanNestjsControllers(adminApiPath, 'adminapi', module, controllers);
      }

      // 检查api控制器
      const apiPath = path.join(modulePath, 'controllers/api');
      if (fs.existsSync(apiPath)) {
        this.scanNestjsControllers(apiPath, 'api', module, controllers);
      }
    }

    return controllers;
  }

  /**
   * 扫描NestJS控制器
   */
  scanNestjsControllers(dir, type, module, controllers) {
    if (!fs.existsSync(dir)) return;

    const entries = fs.readdirSync(dir, { withFileTypes: true });
    
    for (const entry of entries) {
      if (entry.isFile() && entry.name.endsWith('.controller.ts')) {
        const fileName = path.basename(entry.name, '.controller.ts');
        
        controllers.push({
          type,
          module,
          name: fileName,
          nestjsPath: path.join(dir, entry.name)
        });
      }
    }
  }

  /**
   * 检查控制器映射
   */
  checkControllerMapping() {
    const phpControllers = this.getPhpControllers();
    const nestjsControllers = this.getNestjsControllers();

    console.log('\n📋 控制器映射检查结果:');
    console.log('='.repeat(50));

    for (const phpController of phpControllers) {
      const matched = nestjsControllers.find(nestjs => 
        nestjs.type === phpController.type &&
        this.normalizeModuleName(nestjs.module) === this.normalizeModuleName(phpController.module) &&
        this.normalizeControllerName(nestjs.name) === this.normalizeControllerName(phpController.name)
      );

      const status = matched ? '✅' : '❌';
      const moduleDisplay = phpController.module === 'root' ? '/' : phpController.module;
      
      console.log(`${status} ${phpController.type}/${moduleDisplay}/${phpController.name}.php`);
      
      if (matched) {
        console.log(`   → ${matched.module}/${matched.name}.controller.ts`);
        this.results.summary.matched++;
      } else {
        console.log(`   → 缺失对应的NestJS控制器`);
        this.results.summary.missing++;
      }
      
      this.results.summary.total++;
      this.results.controllers.push({
        php: phpController,
        nestjs: matched,
        matched: !!matched
      });
    }
  }

  /**
   * 标准化模块名
   */
  normalizeModuleName(name) {
    if (name === 'root' || name === '.' || name === '/') return '';
    return name.toLowerCase().replace(/[_\-]/g, '');
  }

  /**
   * 标准化控制器名
   */
  normalizeControllerName(name) {
    return name.toLowerCase().replace(/[_\-]/g, '');
  }

  /**
   * 检查服务映射
   */
  checkServiceMapping() {
    console.log('\n🔧 服务映射检查:');
    console.log('='.repeat(50));
    
    const phpServicePath = path.join(this.phpPath, 'app/service');
    const nestjsCommonPath = path.join(this.nestjsPath, 'common');

    if (!fs.existsSync(phpServicePath)) {
      console.log('❌ PHP服务目录不存在');
      return;
    }

    if (!fs.existsSync(nestjsCommonPath)) {
      console.log('❌ NestJS通用服务目录不存在');
      return;
    }

    // 简化的服务检查
    const phpServices = this.getPhpServices(phpServicePath);
    const nestjsServices = this.getNestjsServices(nestjsCommonPath);

    for (const phpService of phpServices) {
      const matched = nestjsServices.find(nestjs => 
        this.normalizeServiceName(nestjs.name) === this.normalizeServiceName(phpService.name)
      );

      const status = matched ? '✅' : '❌';
      console.log(`${status} ${phpService.name}.php`);
      
      if (matched) {
        console.log(`   → ${matched.module}/${matched.name}.service.ts`);
      }
    }
  }

  /**
   * 获取PHP服务列表
   */
  getPhpServices(dir) {
    const services = [];
    
    if (!fs.existsSync(dir)) return services;

    const entries = fs.readdirSync(dir, { withFileTypes: true });
    
    for (const entry of entries) {
      if (entry.isFile() && entry.name.endsWith('.php')) {
        services.push({
          name: path.basename(entry.name, '.php'),
          path: path.join(dir, entry.name)
        });
      }
    }

    return services;
  }

  /**
   * 获取NestJS服务列表
   */
  getNestjsServices(dir) {
    const services = [];
    
    if (!fs.existsSync(dir)) return services;

    const modules = fs.readdirSync(dir, { withFileTypes: true })
      .filter(entry => entry.isDirectory())
      .map(entry => entry.name);

    for (const module of modules) {
      const servicesPath = path.join(dir, module, 'services');
      
      if (fs.existsSync(servicesPath)) {
        this.scanNestjsServices(servicesPath, module, services);
      }
    }

    return services;
  }

  /**
   * 扫描NestJS服务
   */
  scanNestjsServices(dir, module, services) {
    const entries = fs.readdirSync(dir, { withFileTypes: true });
    
    for (const entry of entries) {
      const fullPath = path.join(dir, entry.name);
      
      if (entry.isDirectory()) {
        this.scanNestjsServices(fullPath, module, services);
      } else if (entry.isFile() && entry.name.endsWith('.service.ts')) {
        services.push({
          module,
          name: path.basename(entry.name, '.service.ts'),
          path: fullPath
        });
      }
    }
  }

  /**
   * 标准化服务名
   */
  normalizeServiceName(name) {
    return name.toLowerCase().replace(/service$/, '').replace(/[_\-]/g, '');
  }

  /**
   * 生成统计报告
   */
  generateSummary() {
    console.log('\n📊 检查统计:');
    console.log('='.repeat(50));
    console.log(`总计检查项: ${this.results.summary.total}`);
    console.log(`匹配成功: ${this.results.summary.matched} (${((this.results.summary.matched / this.results.summary.total) * 100).toFixed(1)}%)`);
    console.log(`缺失项目: ${this.results.summary.missing} (${((this.results.summary.missing / this.results.summary.total) * 100).toFixed(1)}%)`);

    if (this.results.summary.missing > 0) {
      console.log('\n⚠️  需要关注的缺失项:');
      const missingItems = this.results.controllers.filter(item => !item.matched);
      
      for (const item of missingItems.slice(0, 10)) { // 只显示前10个
        console.log(`   - ${item.php.type}/${item.php.module}/${item.php.name}.php`);
      }
      
      if (missingItems.length > 10) {
        console.log(`   ... 还有 ${missingItems.length - 10} 个缺失项`);
      }
    }
  }

  /**
   * 运行完整检查
   */
  async run() {
    console.log('🚀 PHP与NestJS项目自动映射检查器');
    console.log('='.repeat(50));

    if (!this.checkDirectories()) {
      process.exit(1);
    }

    try {
      this.checkControllerMapping();
      this.checkServiceMapping();
      this.generateSummary();

      console.log('\n✅ 检查完成!');
      
      if (this.results.summary.missing > 0) {
        console.log('\n💡 建议: 根据缺失项创建对应的NestJS文件');
        process.exit(1);
      }
      
    } catch (error) {
      console.error('❌ 检查过程中出现错误:', error.message);
      process.exit(1);
    }
  }
}

// 运行检查器
if (require.main === module) {
  const checker = new AutoMappingChecker();
  checker.run().catch(console.error);
}

module.exports = AutoMappingChecker;