#!/usr/bin/env node

const fs = require('fs');
const path = require('path');
const BaseGenerator = require('./base-generator');

/**
 * 📚 字典生成器
 * 专门负责生成NestJS字典/枚举文件
 */
class DictGenerator extends BaseGenerator {
  constructor() {
    super('DictGenerator');
    
    this.config = {
      phpBasePath: '/Users/wanwu/Documents/wwjcloud/wwjcloud-nsetjs/niucloud-php/niucloud',
      nestjsBasePath: '/Users/wanwu/Documents/wwjcloud/wwjcloud-nsetjs/wwjcloud-nest/src/core',
      discoveryResultPath: '/Users/wanwu/Documents/wwjcloud/wwjcloud-nsetjs/tools/php-discovery-result.json'
    };
    
    this.discoveryData = null;
    this.dictStats = {
      dictsCreated: 0,
      dictsSkipped: 0
    };
  }

  /**
   * 运行字典生成
   */
  async run() {
    try {
      console.log('📚 启动字典生成器...');
      console.log('目标：生成NestJS字典/枚举文件\n');

      // 加载PHP文件发现结果
      await this.loadDiscoveryData();
      
      // 生成字典
      await this.generateDicts();
      
      // 输出统计报告
      this.printStats();
      
    } catch (error) {
      console.error('❌ 字典生成失败:', error);
      this.stats.errors++;
    }
  }

  /**
   * 加载PHP文件发现结果
   */
  async loadDiscoveryData() {
    try {
      const data = fs.readFileSync(this.config.discoveryResultPath, 'utf8');
      this.discoveryData = JSON.parse(data);
      console.log('   ✅ 成功加载PHP文件发现结果');
    } catch (error) {
      console.error('❌ 加载发现结果失败:', error);
      throw error;
    }
  }

  /**
   * 生成字典
   */
  async generateDicts() {
    console.log('   🔨 生成字典...');
    
    for (const [moduleName, dicts] of Object.entries(this.discoveryData.dicts)) {
      for (const [dictName, dictInfo] of Object.entries(dicts)) {
        await this.createDict(moduleName, dictName, dictInfo);
        this.stats.dictsCreated++;
      }
    }
    
    console.log(`   ✅ 生成了 ${this.stats.dictsCreated} 个字典`);
  }

  /**
   * 创建字典
   */
  async createDict(moduleName, dictName, dictInfo) {
    // 使用 kebab-case 文件名，避免重叠名问题
    // 例如: dict → dict.enum.ts (而不是 DictDict.ts)
    const kebabName = this.toKebabCase(dictName);
    const dictPath = path.join(
      this.config.nestjsBasePath, 
      moduleName, 
      'enums',
      `${kebabName}.enum.ts`  // ✅ kebab-case + .enum.ts 后缀
    );
    
    const content = this.generateDictContent(moduleName, dictName);
    const success = this.writeFile(dictPath, content, `Enum for ${moduleName}/${dictName}`);
    
    if (success) {
      this.dictStats.dictsCreated++;
    } else {
      this.dictStats.dictsSkipped++;
    }
  }

  /**
   * 生成字典内容
   */
  generateDictContent(moduleName, dictName) {
    // 避免重叠名: Dict → DictEnum (而不是 DictDict)
    const pascalName = this.toPascalCase(dictName);
    const className = `${pascalName}Enum`;  // ✅ 例如: DictEnum, MemberEnum
    const dictVarName = `${this.toCamelCase(dictName)}Dict`;  // ✅ 例如: dictDict, memberDict
    
    const content = `/**
 * ${dictName} 枚举
 * 定义相关的常量值
 */

export enum ${className} {
  // 状态枚举
  STATUS_ACTIVE = 'active',
  STATUS_INACTIVE = 'inactive',
  STATUS_PENDING = 'pending',
  STATUS_DELETED = 'deleted',

  // 类型枚举
  TYPE_NORMAL = 'normal',
  TYPE_PREMIUM = 'premium',
  TYPE_VIP = 'vip',

  // 级别枚举
  LEVEL_LOW = 1,
  LEVEL_MEDIUM = 2,
  LEVEL_HIGH = 3,
  LEVEL_CRITICAL = 4,
}

/**
 * ${dictName} 字典映射
 */
export const ${dictVarName} = {
  // 状态映射
  status: {
    [${className}.STATUS_ACTIVE]: '激活',
    [${className}.STATUS_INACTIVE]: '未激活',
    [${className}.STATUS_PENDING]: '待处理',
    [${className}.STATUS_DELETED]: '已删除',
  },

  // 类型映射
  type: {
    [${className}.TYPE_NORMAL]: '普通',
    [${className}.TYPE_PREMIUM]: '高级',
    [${className}.TYPE_VIP]: 'VIP',
  },

  // 级别映射
  level: {
    [${className}.LEVEL_LOW]: '低',
    [${className}.LEVEL_MEDIUM]: '中',
    [${className}.LEVEL_HIGH]: '高',
    [${className}.LEVEL_CRITICAL]: '紧急',
  },
} as const;

/**
 * ${dictName} 工具类
 */
export class ${className}Util {
  /**
   * 获取状态文本
   */
  static getStatusText(status: ${className}): string {
    return (${dictVarName}.status as any)[status] || '未知';
  }

  /**
   * 获取类型文本
   */
  static getTypeText(type: ${className}): string {
    return (${dictVarName}.type as any)[type] || '未知';
  }

  /**
   * 获取级别文本
   */
  static getLevelText(level: ${className}): string {
    return (${dictVarName}.level as any)[level] || '未知';
  }

  /**
   * 获取所有状态选项
   */
  static getStatusOptions(): Array<{ value: string; label: string }> {
    return Object.entries(${dictVarName}.status).map(([value, label]) => ({
      value,
      label: label as string,
    }));
  }

  /**
   * 获取所有类型选项
   */
  static getTypeOptions(): Array<{ value: string; label: string }> {
    return Object.entries(${dictVarName}.type).map(([value, label]) => ({
      value,
      label: label as string,
    }));
  }

  /**
   * 获取所有级别选项
  */
  static getLevelOptions(): Array<{ value: number; label: string }> {
    return Object.entries(${dictVarName}.level).map(([value, label]) => ({
      value: Number(value),
      label: label as string,
    }));
  }

  /**
   * 验证状态值
   */
  static isValidStatus(status: string): boolean {
    return Object.values(${className}).includes(status as ${className});
  }

  /**
   * 验证类型值
   */
  static isValidType(type: string): boolean {
    return Object.values(${className}).includes(type as ${className});
  }

  /**
   * 验证级别值
   */
  static isValidLevel(level: number): boolean {
    return Object.values(${className}).includes(level as ${className});
  }
}

/**
 * ${dictName} 类型定义
 */
export type ${className}Status = keyof typeof ${dictVarName}.status;
export type ${className}Type = keyof typeof ${dictVarName}.type;
export type ${className}Level = keyof typeof ${dictVarName}.level;`;

    return content;
  }

  /**
   * 输出统计报告
   */
  printStats() {
    super.printStats({
      'Dicts Created': this.dictStats.dictsCreated,
      'Dicts Skipped': this.dictStats.dictsSkipped
    });
  }
}

// 如果直接运行此文件
if (require.main === module) {
  const generator = new DictGenerator();
  generator.run().catch(console.error);
}

module.exports = DictGenerator;