import { MidwayConfig } from "@midwayjs/core";
import { existsSync } from "fs";
import { join } from "path";
import { tmpdir } from "os";
import { config as loadEnv } from "dotenv";

// 加载项目根目录的环境变量文件：
//   1) .env            基础配置（默认=生产，不覆盖系统环境变量）
//   2) .env.{环境}      环境专属覆盖，如 .env.local（MIDWAY_SERVER_ENV=local 时生效）
const envDir = join(__dirname, "../../");
loadEnv({ path: join(envDir, ".env") });

const currentEnv = process.env.MIDWAY_SERVER_ENV || process.env.NODE_ENV || "prod";
const envFile = join(envDir, `.env.${currentEnv}`);
if (existsSync(envFile)) {
	loadEnv({ path: envFile, override: true });
}

export default {
	keys: "smart-grid-iot-secret-key",

	koa: {
		port: 7001
	},

	// 日志输出目录（显式指定到项目内 server/logs，避免写入用户主目录导致 EPERM 权限报错）
	logger: {
		dir: join(envDir, "logs"),
		appLogName: "midway-app.log",
		coreLogName: "midway-core.log",
		errorLogName: "common-error.log",
		enableError: true,
		maxFiles: "30d"
	},

	sequelize: {
		dataSource: {
			default: {
				dialect: "postgres",
				host: process.env.PG_HOST || "localhost",
				port: Number(process.env.PG_PORT) || 5432,
				database: process.env.PG_DATABASE || "xintong",
				username: process.env.PG_USERNAME || "postgres",
				password: process.env.PG_PASSWORD || "postgres",
				timezone: "+08:00",
				models: [join(__dirname, "../entity")],
				define: {
					timestamps: true,
					underscored: true,
					createdAt: "created_at",
					updatedAt: "updated_at"
				},
				pool: {
					max: 10,
					min: 0,
					acquire: 30000,
					idle: 10000
				}
			}
		},
		sync: false
	},

	redis: {
		client: {
			host: process.env.REDIS_HOST || "localhost",
			port: Number(process.env.REDIS_PORT) || 6379,
			password: process.env.REDIS_PASSWORD || "",
			db: 0
		}
	},

	jwt: {
		secret: "smart-grid-iot-admin-jwt-secret-key-2024",
		expiresIn: "2h",
		refreshExpiresIn: "7d"
	},

	// multipart/form-data 解析配置（现场照片上传）
	upload: {
		mode: "file",
		fileSize: "10mb",
		whitelist: [".png", ".jpg", ".jpeg", ".webp", ".gif", ".bmp"],
		tmpdir: join(tmpdir(), "smart-grid-upload"),
		cleanTimeout: 5 * 60 * 1000
	},

	// RustFS 对象存储（S3 兼容协议、path-style 访问）
	rustfs: {
		endpoint: process.env.RUSTFS_ENDPOINT || "127.0.0.1",
		port: Number(process.env.RUSTFS_PORT) || 9000,
		useSSL: process.env.RUSTFS_USE_SSL === "true",
		accessKey: process.env.RUSTFS_ACCESS_KEY || "",
		secretKey: process.env.RUSTFS_SECRET_KEY || "",
		region: process.env.RUSTFS_REGION || "us-east-1",
		// 当前生效的桶（生产/测试通过 .env 与 .env.local 切换）
		bucket: process.env.RUSTFS_BUCKET || process.env.RUSTFS_BUCKET_PROD || "",
		bucketProd: process.env.RUSTFS_BUCKET_PROD || "",
		bucketTest: process.env.RUSTFS_BUCKET_TEST || "",
		// RustFS 仅支持 path-style 访问
		forcePathStyle: true,
		// 预签名 URL 有效期（秒）
		presignExpires: 3600,
		// 上传对象 key 前缀
		keyPrefix: "customer-visit"
	},

	cors: {
		origin: "*",
		allowMethods: "GET,HEAD,PUT,POST,DELETE,PATCH,OPTIONS",
		exposeHeaders: "Content-Type,Authorization,X-Requested-With",
		credentials: true
	},

	security: {
		csrf: {
			enable: false
		}
	}
} as MidwayConfig;