import { z } from 'zod';

// z.coerce.boolean() 把任何非空字符串当 true(包括"false"),用 preprocess 修正
const envBool = (defaultValue: boolean) =>
  z.preprocess((v) => {
    if (typeof v !== 'string') return v;
    return ['true', '1', 'yes', 'on'].includes(v.toLowerCase());
  }, z.boolean()).default(defaultValue);

const envSchema = z.object({
  JWT_SECRET: z.string().min(16, 'JWT_SECRET must be at least 16 characters'),
  PORT: z.coerce.number().default(3200),

  MYSQL_HOST: z.string().default('localhost'),
  MYSQL_PORT: z.coerce.number().default(3306),
  MYSQL_USER: z.string().default('root'),
  MYSQL_PASSWORD: z.string().default(''),
  MYSQL_DATABASE: z.string().default('devperf'),

  PLANE_BASE_URL: z.string().url().default('http://plane-api:8000'),
  PLANE_API_TOKEN: z.string().default(''),
  PLANE_WORKSPACE_SLUG: z.string().default('jasonqiyuan'),

  GITEA_BASE_URL: z.string().url().default('http://gitea:3000'),
  GITEA_API_TOKEN: z.string().default(''),
  GITEA_ORG: z.string().default('jasonqiyuan'),

  SYNC_PLANE_INTERVAL: z.coerce.number().default(15),
  SYNC_GITEA_INTERVAL: z.coerce.number().default(30),

  ADMIN_EMAIL: z.string().email().default('admin@jasonqiyuan.com'),
  ADMIN_PASSWORD: z.string().min(6).default('Admin123!'),

  // AI (豆包 Doubao / 火山引擎 Ark)
  AI_ENABLED: envBool(false),
  AI_API_KEY: z.string().default(''),
  AI_MODEL: z.string().default('doubao-seed-2-0-pro-260215'),
  AI_BASE_URL: z.string().default('https://ark.cn-beijing.volces.com/api/v3'),

  // ROI 外部营收 API
  MOCK_REVENUE_API: envBool(false),
  REVENUE_API_BASE_URL: z.string().default('http://localhost:3200/mock'),
  REVENUE_API_KEY: z.string().default('mock-dev-key-12345'),
});

function loadConfig() {
  const result = envSchema.safeParse(process.env);
  if (!result.success) {
    const missing = result.error.issues.map(
      (i) => `  ${i.path.join('.')}: ${i.message}`
    );
    console.error('Environment validation failed:\n' + missing.join('\n'));
    process.exit(1);
  }
  return result.data;
}

export const config = loadConfig();
export type Config = z.infer<typeof envSchema>;