package main

import (
	"context"
	"log"
	"time"

	"affiliate_dash/internal/config"
	"affiliate_dash/internal/database"
	"affiliate_dash/internal/handler"
	"affiliate_dash/internal/pkg/applog"
	"affiliate_dash/internal/pkg/jwt"
	"affiliate_dash/internal/pkg/lewan"
	"affiliate_dash/internal/pkg/openlog"
	"affiliate_dash/internal/pkg/timeutil"
	"affiliate_dash/internal/router"
	"affiliate_dash/internal/service"

	"github.com/gin-gonic/gin"
	"gorm.io/driver/postgres"
	"gorm.io/gorm"
)

// secondsToDurations 把秒数列表转成 time.Duration 列表（回调重试序列）。
func secondsToDurations(seconds []int) []time.Duration {
	if len(seconds) == 0 {
		return nil
	}
	out := make([]time.Duration, 0, len(seconds))
	for _, s := range seconds {
		out = append(out, time.Duration(s)*time.Second)
	}
	return out
}

func main() {
	cfg := config.Load()
	time.Local = timeutil.Location()

	// 日志：控制台 + 文件
	applog.SetRetainDays(cfg.LogRetainDays)
	applog.SetLevel(cfg.LogLevel)
	logFile, err := applog.Setup(cfg.LogFile)
	if err != nil {
		log.Fatalf("setup log: %v", err)
	}
	if logFile != nil {
		defer logFile.Close()
	}

	gin.SetMode(cfg.Mode)

	// 密钥配置体检：让「示例密钥被带到真实部署」这类问题在启动日志里立刻可见。
	for _, warning := range cfg.SecurityWarnings() {
		applog.Warnf("[CONFIG] 安全告警: %s", warning)
	}

	db, err := gorm.Open(postgres.Open(cfg.DatabaseURL), &gorm.Config{
		Logger: applog.NewGormLogger(cfg.Mode),
	})
	if err != nil {
		log.Fatalf("open db: %v", err)
	}

	if err := database.Migrate(db); err != nil {
		log.Fatalf("migrate: %v", err)
	}

	jm := jwt.NewManager(cfg.JWTSecret)
	codec, err := service.NewSecretCodec(cfg.DataEncryptionKey)
	if err != nil {
		log.Fatalf("setup secret codec: %v", err)
	}
	tenantSvc := service.NewTenantService(db)
	authSvc := service.NewAuthService(db, jm, tenantSvc)
	userSvc := service.NewUserService(db, tenantSvc)
	callbackSvc := service.NewCallbackService(db, codec, service.WithCallbackConfig(service.CallbackConfig{
		MaxAttempts:   cfg.CallbackMaxAttempts,
		PushTimeout:   time.Duration(cfg.CallbackPushTimeoutSeconds) * time.Second,
		RetrySchedule: secondsToDurations(cfg.CallbackRetryScheduleSeconds),
	}))
	fulfillmentSvc := service.NewFulfillmentService(db, callbackSvc)
	merchantSvc := service.NewMerchantService(db, codec, tenantSvc)
	rechargeSvc := service.NewRechargeService(db, fulfillmentSvc, cfg.UploadDir)
	deliverySvc := service.NewDeliveryService(
		fulfillmentSvc,
		cfg.DeliveryBFFBaseURL,
		cfg.DeliveryChannel,
		cfg.DeliveryBaseURL,
		cfg.DeliveryLinkSecret,
		cfg.DeliveryLinkTTLMinutes,
	)

	// 乐玩开放平台客户端与履约提供商注册
	lewanClient := lewan.NewClient(lewan.Config{
		BaseURL:       cfg.LewanBaseURL,
		AccessKey:     cfg.LewanAccessKey,
		SecretKey:     cfg.LewanSecretKey,
		ApplicationID: cfg.LewanApplicationID,
		WebhookSecret: cfg.LewanWebhookSecret,
	}, nil)
	lewanProvider := service.NewLewanProvider(lewanClient)
	deliverySvc.RegisterProvider(lewanProvider)

	// Rock 平台 (0666.pro) 客户端、服务与履约提供商注册
	rockClient := service.NewRockClient("https://0666.pro")
	rockSvc := service.NewRockService(db, rockClient)
	rockProvider := service.NewRockProvider(rockSvc)
	deliverySvc.RegisterProvider(rockProvider)

	fulfillmentSvc.SetUpstreamCancel(deliverySvc.CancelUpstream)
	fulfillmentSvc.SetUpstreamSync(deliverySvc.SyncDeliveringOrder)

	openlog.Init(cfg.OpenAPIDebug)

	h := &router.Handlers{
		Auth:               handler.NewAuthHandler(authSvc),
		Dashboard:          handler.NewDashboardHandler(fulfillmentSvc),
		Delivery:           handler.NewDeliveryHandler(deliverySvc),
		User:               handler.NewUserHandler(userSvc),
		Open:               handler.NewOpenV1Handler(merchantSvc, fulfillmentSvc, deliverySvc),
		SourceOpen:         handler.NewOpenHandler(fulfillmentSvc),
		Merchant:           handler.NewMerchantHandler(merchantSvc, fulfillmentSvc, callbackSvc, deliverySvc, rechargeSvc),
		Recharge:           handler.NewRechargeHandler(rechargeSvc),
		JWT:                jm,
		Tenant:             tenantSvc,
		OpenDB:             db,
		SecretCodec:        codec,
		OpenAPIKey:         cfg.OpenAPIKey,
		OpenAPISecret:      cfg.OpenAPISecret,
		OpenSignSkew:       cfg.OpenSignSkew,
		OpenAPIDebug:       cfg.OpenAPIDebug,
		UploadDir:          cfg.UploadDir,
		CORSAllowedOrigins: cfg.CORSAllowedOrigins,
		LewanWebhook:       handler.NewLewanWebhookHandler(fulfillmentSvc, db, cfg.LewanWebhookSecret, cfg.LewanApplicationID),
		PlatformLewan:      handler.NewPlatformLewanHandler(merchantSvc, lewanClient),
		Rock:               handler.NewRockHandler(rockSvc),
	}

	go callbackSvc.Run(context.Background())
	go fulfillmentSvc.RunProcessingTimeoutMonitor(
		context.Background(),
		time.Duration(cfg.FulfillmentProcessingTimeoutMinutes)*time.Minute,
		time.Duration(cfg.FulfillmentTimeoutScanIntervalSeconds)*time.Second,
	)

	// 定时巡检 Rock 库存低水位与自动补货（每5分钟）
	go func() {
		ticker := time.NewTicker(5 * time.Minute)
		defer ticker.Stop()
		for range ticker.C {
			rockSvc.CheckStockAndAutoPurchase(context.Background())
		}
	}()

	r := router.Setup(h)
	addr := ":" + cfg.Port
	applog.Infof("游戏皮肤供货平台 API 启动: http://localhost%s (日志级别: %s)", addr, applog.GetLevel())
	applog.Infof("数据库: PostgreSQL")
	applog.Infof("开放接口鉴权: X-App-Key + X-Timestamp + X-Nonce + X-Sign (HMAC-SHA256)")
	if cfg.OpenAPIDebug {
		applog.Infof("开放接口调试日志: 开启 (OPEN_API_DEBUG=0 可关闭)")
	}
	if cfg.LogFile != "" {
		applog.Infof("日志文件: %s （同时输出控制台）", cfg.LogFile)
	}
	if err := r.Run(addr); err != nil {
		log.Fatalf("server: %v", err)
	}
}