package service

import (
	"context"
	"database/sql"
	"time"

	dbent "github.com/Wei-Shaw/sub2api/ent"
	"github.com/Wei-Shaw/sub2api/internal/config"
	"github.com/Wei-Shaw/sub2api/internal/payment"
	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
	"github.com/google/wire"
	"github.com/redis/go-redis/v9"
)

// BuildInfo contains build information
type BuildInfo struct {
	Version   string
	BuildType string
}

// ProvidePricingService creates and initializes PricingService
func ProvidePricingService(cfg *config.Config, remoteClient PricingRemoteClient) (*PricingService, error) {
	svc := NewPricingService(cfg, remoteClient)
	if err := svc.Initialize(); err != nil {
		// Pricing service initialization failure should not block startup, use fallback prices
		println("[Service] Warning: Pricing service initialization failed:", err.Error())
	}
	return svc, nil
}

// ProvideUpdateService creates UpdateService with BuildInfo
func ProvideUpdateService(cache UpdateCache, githubClient GitHubReleaseClient, buildInfo BuildInfo) *UpdateService {
	return NewUpdateService(cache, githubClient, buildInfo.Version, buildInfo.BuildType)
}

// ProvideEmailQueueService creates EmailQueueService with default worker count
func ProvideEmailQueueService(emailService *EmailService) *EmailQueueService {
	return NewEmailQueueService(emailService, 3)
}

// ProvideTokenRefreshService creates and starts TokenRefreshService
func ProvideTokenRefreshService(
	accountRepo AccountRepository,
	oauthService *OAuthService,
	openaiOAuthService *OpenAIOAuthService,
	geminiOAuthService *GeminiOAuthService,
	antigravityOAuthService *AntigravityOAuthService,
	cacheInvalidator TokenCacheInvalidator,
	schedulerCache SchedulerCache,
	cfg *config.Config,
	tempUnschedCache TempUnschedCache,
	privacyClientFactory PrivacyClientFactory,
	proxyRepo ProxyRepository,
	refreshAPI *OAuthRefreshAPI,
) *TokenRefreshService {
	svc := NewTokenRefreshService(accountRepo, oauthService, openaiOAuthService, geminiOAuthService, antigravityOAuthService, cacheInvalidator, schedulerCache, cfg, tempUnschedCache)
	// 注入 OpenAI privacy opt-out 依赖
	svc.SetPrivacyDeps(privacyClientFactory, proxyRepo)
	// 注入统一 OAuth 刷新 API（消除 TokenRefreshService 与 TokenProvider 之间的竞争条件）
	svc.SetRefreshAPI(refreshAPI)
	// 调用侧显式注入后台刷新策略，避免策略漂移
	svc.SetRefreshPolicy(DefaultBackgroundRefreshPolicy())
	svc.Start()
	return svc
}

// ProvideClaudeTokenProvider creates ClaudeTokenProvider with OAuthRefreshAPI injection
func ProvideClaudeTokenProvider(
	accountRepo AccountRepository,
	tokenCache GeminiTokenCache,
	oauthService *OAuthService,
	refreshAPI *OAuthRefreshAPI,
) *ClaudeTokenProvider {
	p := NewClaudeTokenProvider(accountRepo, tokenCache, oauthService)
	executor := NewClaudeTokenRefresher(oauthService)
	p.SetRefreshAPI(refreshAPI, executor)
	p.SetRefreshPolicy(ClaudeProviderRefreshPolicy())
	return p
}

// ProvideOpenAITokenProvider creates OpenAITokenProvider with OAuthRefreshAPI injection
func ProvideOpenAITokenProvider(
	accountRepo AccountRepository,
	tokenCache GeminiTokenCache,
	openaiOAuthService *OpenAIOAuthService,
	refreshAPI *OAuthRefreshAPI,
) *OpenAITokenProvider {
	p := NewOpenAITokenProvider(accountRepo, tokenCache, openaiOAuthService)
	executor := NewOpenAITokenRefresher(openaiOAuthService, accountRepo)
	p.SetRefreshAPI(refreshAPI, executor)
	p.SetRefreshPolicy(OpenAIProviderRefreshPolicy())
	return p
}

// ProvideGeminiTokenProvider creates GeminiTokenProvider with OAuthRefreshAPI injection
func ProvideGeminiTokenProvider(
	accountRepo AccountRepository,
	tokenCache GeminiTokenCache,
	geminiOAuthService *GeminiOAuthService,
	refreshAPI *OAuthRefreshAPI,
) *GeminiTokenProvider {
	p := NewGeminiTokenProvider(accountRepo, tokenCache, geminiOAuthService)
	executor := NewGeminiTokenRefresher(geminiOAuthService)
	p.SetRefreshAPI(refreshAPI, executor)
	p.SetRefreshPolicy(GeminiProviderRefreshPolicy())
	return p
}

// ProvideAntigravityTokenProvider creates AntigravityTokenProvider with OAuthRefreshAPI injection
func ProvideAntigravityTokenProvider(
	accountRepo AccountRepository,
	tokenCache GeminiTokenCache,
	antigravityOAuthService *AntigravityOAuthService,
	refreshAPI *OAuthRefreshAPI,
	tempUnschedCache TempUnschedCache,
) *AntigravityTokenProvider {
	p := NewAntigravityTokenProvider(accountRepo, tokenCache, antigravityOAuthService)
	executor := NewAntigravityTokenRefresher(antigravityOAuthService)
	p.SetRefreshAPI(refreshAPI, executor)
	p.SetRefreshPolicy(AntigravityProviderRefreshPolicy())
	p.SetTempUnschedCache(tempUnschedCache)
	return p
}

// ProvideDashboardAggregationService 创建并启动仪表盘聚合服务
func ProvideDashboardAggregationService(repo DashboardAggregationRepository, timingWheel *TimingWheelService, cfg *config.Config) *DashboardAggregationService {
	svc := NewDashboardAggregationService(repo, timingWheel, cfg)
	svc.Start()
	return svc
}

// ProvideUsageCleanupService 创建并启动使用记录清理任务服务
func ProvideUsageCleanupService(repo UsageCleanupRepository, timingWheel *TimingWheelService, dashboardAgg *DashboardAggregationService, cfg *config.Config) *UsageCleanupService {
	svc := NewUsageCleanupService(repo, timingWheel, dashboardAgg, cfg)
	svc.Start()
	return svc
}

// ProvideAccountExpiryService creates and starts AccountExpiryService.
func ProvideAccountExpiryService(accountRepo AccountRepository) *AccountExpiryService {
	svc := NewAccountExpiryService(accountRepo, time.Minute)
	svc.Start()
	return svc
}

// ProvideSubscriptionExpiryService creates and starts SubscriptionExpiryService.
func ProvideSubscriptionExpiryService(userSubRepo UserSubscriptionRepository) *SubscriptionExpiryService {
	svc := NewSubscriptionExpiryService(userSubRepo, time.Minute)
	svc.Start()
	return svc
}

// ProvideTimingWheelService creates and starts TimingWheelService
func ProvideTimingWheelService() (*TimingWheelService, error) {
	svc, err := NewTimingWheelService()
	if err != nil {
		return nil, err
	}
	svc.Start()
	return svc, nil
}

// ProvideDeferredService creates and starts DeferredService
func ProvideDeferredService(accountRepo AccountRepository, timingWheel *TimingWheelService) *DeferredService {
	svc := NewDeferredService(accountRepo, timingWheel, 10*time.Second)
	svc.Start()
	return svc
}

// ProvideConcurrencyService creates ConcurrencyService and starts slot cleanup worker.
func ProvideConcurrencyService(cache ConcurrencyCache, accountRepo AccountRepository, cfg *config.Config) *ConcurrencyService {
	svc := NewConcurrencyService(cache)
	if err := svc.CleanupStaleProcessSlots(context.Background()); err != nil {
		logger.LegacyPrintf("service.concurrency", "Warning: startup cleanup stale process slots failed: %v", err)
	}
	if cfg != nil {
		svc.StartSlotCleanupWorker(accountRepo, cfg.Gateway.Scheduling.SlotCleanupInterval)
	}
	return svc
}

// ProvideUserMessageQueueService 创建用户消息串行队列服务并启动清理 worker
func ProvideUserMessageQueueService(cache UserMsgQueueCache, rpmCache RPMCache, cfg *config.Config) *UserMessageQueueService {
	svc := NewUserMessageQueueService(cache, rpmCache, &cfg.Gateway.UserMessageQueue)
	if cfg.Gateway.UserMessageQueue.CleanupIntervalSeconds > 0 {
		svc.StartCleanupWorker(time.Duration(cfg.Gateway.UserMessageQueue.CleanupIntervalSeconds) * time.Second)
	}
	return svc
}

// ProvideSchedulerSnapshotService creates and starts SchedulerSnapshotService.
func ProvideSchedulerSnapshotService(
	cache SchedulerCache,
	outboxRepo SchedulerOutboxRepository,
	accountRepo AccountRepository,
	groupRepo GroupRepository,
	cfg *config.Config,
) *SchedulerSnapshotService {
	svc := NewSchedulerSnapshotService(cache, outboxRepo, accountRepo, groupRepo, cfg)
	svc.Start()
	return svc
}

// ProvideRateLimitService creates RateLimitService with optional dependencies.
func ProvideRateLimitService(
	accountRepo AccountRepository,
	usageRepo UsageLogRepository,
	cfg *config.Config,
	geminiQuotaService *GeminiQuotaService,
	tempUnschedCache TempUnschedCache,
	timeoutCounterCache TimeoutCounterCache,
	settingService *SettingService,
	tokenCacheInvalidator TokenCacheInvalidator,
) *RateLimitService {
	svc := NewRateLimitService(accountRepo, usageRepo, cfg, geminiQuotaService, tempUnschedCache)
	svc.SetTimeoutCounterCache(timeoutCounterCache)
	svc.SetSettingService(settingService)
	svc.SetTokenCacheInvalidator(tokenCacheInvalidator)
	return svc
}

// ProvideOpsMetricsCollector creates and starts OpsMetricsCollector.
func ProvideOpsMetricsCollector(
	opsRepo OpsRepository,
	settingRepo SettingRepository,
	accountRepo AccountRepository,
	concurrencyService *ConcurrencyService,
	db *sql.DB,
	redisClient *redis.Client,
	cfg *config.Config,
) *OpsMetricsCollector {
	collector := NewOpsMetricsCollector(opsRepo, settingRepo, accountRepo, concurrencyService, db, redisClient, cfg)
	collector.Start()
	return collector
}

// ProvideOpsAggregationService creates and starts OpsAggregationService (hourly/daily pre-aggregation).
func ProvideOpsAggregationService(
	opsRepo OpsRepository,
	settingRepo SettingRepository,
	db *sql.DB,
	redisClient *redis.Client,
	cfg *config.Config,
) *OpsAggregationService {
	svc := NewOpsAggregationService(opsRepo, settingRepo, db, redisClient, cfg)
	svc.Start()
	return svc
}

// ProvideOpsAlertEvaluatorService creates and starts OpsAlertEvaluatorService.
func ProvideOpsAlertEvaluatorService(
	opsService *OpsService,
	opsRepo OpsRepository,
	emailService *EmailService,
	redisClient *redis.Client,
	cfg *config.Config,
) *OpsAlertEvaluatorService {
	svc := NewOpsAlertEvaluatorService(opsService, opsRepo, emailService, redisClient, cfg)
	svc.Start()
	return svc
}

// ProvideOpsCleanupService creates and starts OpsCleanupService (cron scheduled).
// channelMonitorSvc 让维护任务（聚合 + 历史/聚合软删）跟随 ops 清理 cron 一起跑，
// 共享 leader lock + heartbeat。
func ProvideOpsCleanupService(
	opsRepo OpsRepository,
	db *sql.DB,
	redisClient *redis.Client,
	cfg *config.Config,
	channelMonitorSvc *ChannelMonitorService,
) *OpsCleanupService {
	svc := NewOpsCleanupService(opsRepo, db, redisClient, cfg, channelMonitorSvc)
	svc.Start()
	return svc
}

func ProvideOpsSystemLogSink(opsRepo OpsRepository) *OpsSystemLogSink {
	sink := NewOpsSystemLogSink(opsRepo)
	sink.Start()
	logger.SetSink(sink)
	return sink
}

func buildIdempotencyConfig(cfg *config.Config) IdempotencyConfig {
	idempotencyCfg := DefaultIdempotencyConfig()
	if cfg != nil {
		if cfg.Idempotency.DefaultTTLSeconds > 0 {
			idempotencyCfg.DefaultTTL = time.Duration(cfg.Idempotency.DefaultTTLSeconds) * time.Second
		}
		if cfg.Idempotency.SystemOperationTTLSeconds > 0 {
			idempotencyCfg.SystemOperationTTL = time.Duration(cfg.Idempotency.SystemOperationTTLSeconds) * time.Second
		}
		if cfg.Idempotency.ProcessingTimeoutSeconds > 0 {
			idempotencyCfg.ProcessingTimeout = time.Duration(cfg.Idempotency.ProcessingTimeoutSeconds) * time.Second
		}
		if cfg.Idempotency.FailedRetryBackoffSeconds > 0 {
			idempotencyCfg.FailedRetryBackoff = time.Duration(cfg.Idempotency.FailedRetryBackoffSeconds) * time.Second
		}
		if cfg.Idempotency.MaxStoredResponseLen > 0 {
			idempotencyCfg.MaxStoredResponseLen = cfg.Idempotency.MaxStoredResponseLen
		}
		idempotencyCfg.ObserveOnly = cfg.Idempotency.ObserveOnly
	}
	return idempotencyCfg
}

func ProvideIdempotencyCoordinator(repo IdempotencyRepository, cfg *config.Config) *IdempotencyCoordinator {
	coordinator := NewIdempotencyCoordinator(repo, buildIdempotencyConfig(cfg))
	SetDefaultIdempotencyCoordinator(coordinator)
	return coordinator
}

func ProvideSystemOperationLockService(repo IdempotencyRepository, cfg *config.Config) *SystemOperationLockService {
	return NewSystemOperationLockService(repo, buildIdempotencyConfig(cfg))
}

func ProvideIdempotencyCleanupService(repo IdempotencyRepository, cfg *config.Config) *IdempotencyCleanupService {
	svc := NewIdempotencyCleanupService(repo, cfg)
	svc.Start()
	return svc
}

// ProvideScheduledTestService creates ScheduledTestService.
func ProvideScheduledTestService(
	planRepo ScheduledTestPlanRepository,
	resultRepo ScheduledTestResultRepository,
) *ScheduledTestService {
	return NewScheduledTestService(planRepo, resultRepo)
}

// ProvideScheduledTestRunnerService creates and starts ScheduledTestRunnerService.
func ProvideScheduledTestRunnerService(
	planRepo ScheduledTestPlanRepository,
	scheduledSvc *ScheduledTestService,
	accountTestSvc *AccountTestService,
	rateLimitSvc *RateLimitService,
	cfg *config.Config,
) *ScheduledTestRunnerService {
	svc := NewScheduledTestRunnerService(planRepo, scheduledSvc, accountTestSvc, rateLimitSvc, cfg)
	svc.Start()
	return svc
}

// ProvideOpsScheduledReportService creates and starts OpsScheduledReportService.
func ProvideOpsScheduledReportService(
	opsService *OpsService,
	userService *UserService,
	emailService *EmailService,
	redisClient *redis.Client,
	cfg *config.Config,
) *OpsScheduledReportService {
	svc := NewOpsScheduledReportService(opsService, userService, emailService, redisClient, cfg)
	svc.Start()
	return svc
}

// ProvideAPIKeyAuthCacheInvalidator 提供 API Key 认证缓存失效能力
func ProvideAPIKeyAuthCacheInvalidator(apiKeyService *APIKeyService) APIKeyAuthCacheInvalidator {
	// Start Pub/Sub subscriber for L1 cache invalidation across instances
	apiKeyService.StartAuthCacheInvalidationSubscriber(context.Background())
	return apiKeyService
}

// ProvideBackupService creates and starts BackupService
func ProvideBackupService(
	settingRepo SettingRepository,
	cfg *config.Config,
	encryptor SecretEncryptor,
	storeFactory BackupObjectStoreFactory,
	dumper DBDumper,
) *BackupService {
	svc := NewBackupService(settingRepo, cfg, encryptor, storeFactory, dumper)
	svc.Start()
	return svc
}

// ProvideSettingService wires SettingService with group reader and proxy repo.
func ProvideSettingService(settingRepo SettingRepository, groupRepo GroupRepository, proxyRepo ProxyRepository, cfg *config.Config) *SettingService {
	svc := NewSettingService(settingRepo, cfg)
	svc.SetDefaultSubscriptionGroupReader(groupRepo)
	svc.SetProxyRepository(proxyRepo)
	return svc
}

// ProviderSet is the Wire provider set for all services
var ProviderSet = wire.NewSet(
	// Core services
	NewAuthService,
	NewUserService,
	NewAPIKeyService,
	ProvideAPIKeyAuthCacheInvalidator,
	NewGroupService,
	NewAccountService,
	NewProxyService,
	NewRedeemService,
	NewPromoService,
	NewUsageService,
	NewDashboardService,
	ProvidePricingService,
	NewBillingService,
	NewBillingCacheService,
	NewAnnouncementService,
	NewAdminService,
	NewGatewayService,
	NewOpenAIGatewayService,
	NewOAuthService,
	NewOpenAIOAuthService,
	NewGeminiOAuthService,
	NewGeminiQuotaService,
	NewCompositeTokenCacheInvalidator,
	wire.Bind(new(TokenCacheInvalidator), new(*CompositeTokenCacheInvalidator)),
	NewAntigravityOAuthService,
	NewOAuthRefreshAPI,
	ProvideGeminiTokenProvider,
	NewGeminiMessagesCompatService,
	ProvideAntigravityTokenProvider,
	ProvideOpenAITokenProvider,
	ProvideClaudeTokenProvider,
	NewAntigravityGatewayService,
	ProvideRateLimitService,
	NewAccountUsageService,
	NewAccountTestService,
	ProvideSettingService,
	NewDataManagementService,
	ProvideBackupService,
	ProvideOpsSystemLogSink,
	NewOpsService,
	ProvideOpsMetricsCollector,
	ProvideOpsAggregationService,
	ProvideOpsAlertEvaluatorService,
	ProvideOpsCleanupService,
	ProvideOpsScheduledReportService,
	NewEmailService,
	ProvideEmailQueueService,
	NewTurnstileService,
	NewSubscriptionService,
	wire.Bind(new(DefaultSubscriptionAssigner), new(*SubscriptionService)),
	ProvideConcurrencyService,
	ProvideUserMessageQueueService,
	NewUsageRecordWorkerPool,
	ProvideSchedulerSnapshotService,
	NewIdentityService,
	NewCRSSyncService,
	ProvideUpdateService,
	ProvideTokenRefreshService,
	ProvideAccountExpiryService,
	ProvideSubscriptionExpiryService,
	ProvideTimingWheelService,
	ProvideDashboardAggregationService,
	ProvideUsageCleanupService,
	ProvideDeferredService,
	NewAntigravityQuotaFetcher,
	NewUserAttributeService,
	NewUsageCache,
	NewTotpService,
	NewErrorPassthroughService,
	NewTLSFingerprintProfileService,
	NewDigestSessionStore,
	ProvideIdempotencyCoordinator,
	ProvideSystemOperationLockService,
	ProvideIdempotencyCleanupService,
	ProvideScheduledTestService,
	ProvideScheduledTestRunnerService,
	NewGroupCapacityService,
	NewChannelService,
	NewModelPricingResolver,
	ProvidePaymentConfigService,
	NewPaymentService,
	ProvidePaymentOrderExpiryService,
	ProvideBalanceNotifyService,
	ProvideChannelMonitorService,
	ProvideChannelMonitorRunner,
	NewChannelMonitorRequestTemplateService,
)

// ProvidePaymentConfigService wraps NewPaymentConfigService to accept the named
// payment.EncryptionKey type instead of raw []byte, avoiding Wire ambiguity.
func ProvidePaymentConfigService(entClient *dbent.Client, settingRepo SettingRepository, key payment.EncryptionKey) *PaymentConfigService {
	return NewPaymentConfigService(entClient, settingRepo, []byte(key))
}

// ProvideBalanceNotifyService creates BalanceNotifyService
func ProvideBalanceNotifyService(emailService *EmailService, settingRepo SettingRepository, accountRepo AccountRepository) *BalanceNotifyService {
	return NewBalanceNotifyService(emailService, settingRepo, accountRepo)
}

// ProvidePaymentOrderExpiryService creates and starts PaymentOrderExpiryService.
func ProvidePaymentOrderExpiryService(paymentSvc *PaymentService) *PaymentOrderExpiryService {
	svc := NewPaymentOrderExpiryService(paymentSvc, 60*time.Second)
	svc.Start()
	return svc
}

// ProvideChannelMonitorService 创建渠道监控服务（CRUD + RunCheck + 用户视图聚合）。
// 加密器复用 wire 中已注入的 SecretEncryptor（AES-256-GCM）。
func ProvideChannelMonitorService(
	repo ChannelMonitorRepository,
	encryptor SecretEncryptor,
) *ChannelMonitorService {
	return NewChannelMonitorService(repo, encryptor)
}

// ProvideChannelMonitorRunner 创建并启动渠道监控调度器。
// Runner.Stop 由 cleanup function 调用。
// settingService 用于 runner 每个 tick 读取功能开关。
func ProvideChannelMonitorRunner(svc *ChannelMonitorService, settingService *SettingService) *ChannelMonitorRunner {
	r := NewChannelMonitorRunner(svc, settingService)
	r.Start()
	return r
}
