import "reflect-metadata"
import { DataSource } from "typeorm"
import process from 'node:process'
import * as entities from './entities'

/**
 * TypeORM 数据源配置
 *
 * 使用类导入方式加载实体，让 Vite SSR 正确处理 TypeScript 编译
 * 实体内部已使用字符串语法解决循环依赖问题
 */
export const AppDataSource = new DataSource({
  type: "postgres",
  host: process.env.DB_HOST || "localhost",
  port: parseInt(process.env.DB_PORT || "5432"),
  username: process.env.DB_USERNAME || "postgres",
  password: process.env.DB_PASSWORD || "",
  database: process.env.DB_DATABASE || "postgres",
  // 使用类导入方式，Vite SSR 会处理 TypeScript 编译
  entities: Object.values(entities),
  migrations: [
    "./migrations/*[0-9].ts",  // 只匹配数字时间戳开头的迁移文件，排除 index.ts
  ],
  synchronize: false,  // 迁移时必须关闭自动同步
  logging: process.env.DB_LOGGING === "true",
})