/**
 * App config.
 * @file 应用运行配置
 * @module config/app.config
 * @author zhxiao1124
 */

// 注意：本文件不主动加载 .env，环境变量由 src/main.ts 顶部的 `import "dotenv/config"` 注入。
// e2e 测试不加载 .env，DB_CONFIG.host 为空时应用自动退回内存模式（见 src/app/app.module.ts 的门控）。

const numberEnv = (key: string, fallback: number) => {
    const value = Number(process.env[key]);
    return Number.isFinite(value) ? value : fallback;
};

const boolEnv = (key: string, fallback: boolean) => {
    const value = process.env[key];
    if (value === undefined) return fallback;
    return value === "true" || value === "1";
};

export const APP_CONFIG = {
    APP_NAME: "cth-tk-backend",
    PORT: numberEnv("PORT", 3000),
};

export const OPTIONS_CONFIG = {
    cors: {
        origin: process.env.CORS_ORIGIN?.split(","),
        credentials: true,
    },
};

export const DB_CONFIG = {
    type: "mysql" as const,
    host: process.env.DB_HOST,
    port: numberEnv("DB_PORT", 3306),
    username: process.env.DB_USERNAME ?? "root",
    password: process.env.DB_PASSWORD ?? "",
    database: process.env.DB_DATABASE ?? "cth_tk",
    synchronize: boolEnv("DB_SYNCHRONIZE", false),
};

export const AUTH_CONFIG = {
    jwtTokenSecret: process.env.JWT_SECRET ?? "development-secret",
    expiresIn: "30d" as const,
};

export const ADMIN_AUTH_CONFIG = {
    jwtTokenSecret: process.env.ADMIN_JWT_SECRET ?? process.env.JWT_SECRET ?? "development-secret",
    expiresIn: "12h" as const,
    username: process.env.ADMIN_USERNAME ?? "admin",
    password: process.env.ADMIN_PASSWORD ?? "admin123",
    email: process.env.ADMIN_EMAIL ?? "admin@example.com",
};

export const BYTEPLUS_CONFIG = {
    bucket: process.env.BYTEPLUS_BUCKET ?? "mock-short-drama",
};