package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
	"os/exec"
	"os/signal"
	"path/filepath"
	"syscall"
	"time"

	"crypto/subtle"
	"strings"

	"gitea.dooplex.hu/admin/felhom-controller/internal/api"
	"gitea.dooplex.hu/admin/felhom-controller/internal/appexport"
	"gitea.dooplex.hu/admin/felhom-controller/internal/assets"
	"gitea.dooplex.hu/admin/felhom-controller/internal/backup"
	cf "gitea.dooplex.hu/admin/felhom-controller/internal/cloudflare"
	"gitea.dooplex.hu/admin/felhom-controller/internal/crypto"
	"gitea.dooplex.hu/admin/felhom-controller/internal/config"
	"gitea.dooplex.hu/admin/felhom-controller/internal/integrations"
	"gitea.dooplex.hu/admin/felhom-controller/internal/metrics"
	"gitea.dooplex.hu/admin/felhom-controller/internal/monitor"
	"gitea.dooplex.hu/admin/felhom-controller/internal/notify"
	"gitea.dooplex.hu/admin/felhom-controller/internal/recovery"
	"gitea.dooplex.hu/admin/felhom-controller/internal/report"
	"gitea.dooplex.hu/admin/felhom-controller/internal/scheduler"
	"gitea.dooplex.hu/admin/felhom-controller/internal/selftest"
	"gitea.dooplex.hu/admin/felhom-controller/internal/selfupdate"
	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
	"gitea.dooplex.hu/admin/felhom-controller/internal/setup"
	"gitea.dooplex.hu/admin/felhom-controller/internal/stacks"
	"gitea.dooplex.hu/admin/felhom-controller/internal/storage"
	catalogsync "gitea.dooplex.hu/admin/felhom-controller/internal/sync"
	"gitea.dooplex.hu/admin/felhom-controller/internal/system"
	"gitea.dooplex.hu/admin/felhom-controller/internal/web"
)

var (
	// Set at build time via ldflags
	Version   = "dev"
	BuildTime = "unknown"
	GitCommit = "unknown"
)

func main() {
	configPath := flag.String("config", "/opt/docker/felhom-controller/controller.yaml", "Path to configuration file")
	showVersion := flag.Bool("version", false, "Show version and exit")
	flag.Parse()

	if *showVersion {
		fmt.Printf("felhom-controller %s (built %s, commit %s)\n", Version, BuildTime, GitCommit)
		os.Exit(0)
	}

	startTime := time.Now()

	// --- Load configuration ---
	// Use LoadPermissive to tolerate minimal configs (e.g. only domain set by docker-setup.sh).
	// If even that fails (file missing/unreadable), fall back to defaults.
	cfg, err := config.LoadPermissive(*configPath)
	if err != nil {
		cfg = config.Default()
		log.Printf("[WARN] Config load failed (%s), using defaults: %v", *configPath, err)
	}

	logger, logBuffer := setupLogger(cfg)

	// --- Wire system package debug logging ---
	if cfg.Logging.Level == "debug" {
		system.DebugLogger = logger
	}

	// --- Setup mode: if no customer ID configured, run setup wizard ---
	if setup.NeedsSetup(cfg) {
		logger.Printf("[INFO] felhom-controller %s — setup mode", Version)
		runSetupMode(cfg, logger)
		return
	}

	logger.Printf("[INFO] felhom-controller %s starting (customer: %s, domain: %s)",
		Version, cfg.Customer.ID, cfg.Customer.Domain)

	// --- Load settings ---
	settingsPath := cfg.Paths.DataDir + "/settings.json"
	sett, err := settings.Load(settingsPath, logger)
	if err != nil {
		logger.Fatalf("[FATAL] Failed to load settings from %s: %v", settingsPath, err)
	}
	sett.SetDebug(cfg.Logging.Level == "debug")

	// --- Auto-discover storage paths from deployed apps ---
	discoveredPaths := discoverHDDPaths(cfg.Paths.StacksDir, logger)
	sett.AutoDiscoverStoragePaths(discoveredPaths, cfg.Paths.HDDPath, logger)

	// --- Load or create encryption key ---
	encKeyPath := filepath.Join(cfg.Paths.DataDir, "encryption.key")
	encKey, err := crypto.LoadOrCreateKey(encKeyPath)
	if err != nil {
		logger.Fatalf("[FATAL] Failed to load encryption key: %v", err)
	}
	logger.Printf("[INFO] Encryption key loaded from %s", encKeyPath)

	// --- Initialize stack manager ---
	stackMgr, err := stacks.NewManager(cfg, logger)
	if err != nil {
		logger.Fatalf("[FATAL] Failed to initialize stack manager: %v", err)
	}
	stackMgr.SetEncryptionKey(encKey)

	// Initial stack scan
	if err := stackMgr.ScanStacks(); err != nil {
		logger.Printf("[WARN] Initial stack scan failed: %v", err)
	}

	// Inject missing deploy fields for all deployed stacks on startup
	if names := stackMgr.DeployedStackNames(); len(names) > 0 {
		stackMgr.InjectMissingFields(names)
	}

	// Migrate existing plaintext passwords to encrypted
	stackMgr.MigrateEncryption()

	// --- Initialize catalog syncer ---
	syncer := catalogsync.New(cfg, logger, stackMgr.ScanStacks, func(updated []string) {
		stackMgr.InjectMissingFields(updated)
	})
	syncer.Start()
	defer syncer.Stop()

	// --- Graceful shutdown context ---
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// --- Start CPU collector ---
	cpuCollector := system.NewCPUCollector(5 * time.Second)
	cpuCollector.Start(ctx)
	defer cpuCollector.Stop()

	// --- Initialize metrics store + collector ---
	metricsDBPath := "/opt/docker/felhom-controller/data/metrics.db"
	metricsStore, err := metrics.NewMetricsStore(metricsDBPath, logger)
	if err != nil {
		logger.Printf("[WARN] Failed to initialize metrics store: %v — monitoring disabled", err)
	} else {
		logger.Printf("[INFO] Metrics store opened at %s", metricsDBPath)
	}

	if metricsStore != nil {
		defer metricsStore.Close()
		metricsHDDPath := cfg.Paths.HDDPath
		if p := sett.GetDefaultStoragePath(); p != "" {
			metricsHDDPath = p
		}
		metricsCollector := metrics.NewMetricsCollector(metricsStore, cpuCollector, metricsHDDPath, logger)
		metricsCollector.Start(ctx)
		defer metricsCollector.Stop()
		logger.Println("[INFO] Metrics collector started (60s interval)")
	}

	// --- Initialize health pinger (legacy, will be removed) ---
	pinger := monitor.NewPinger(&cfg.Monitoring, logger)
	pinger.SetDebug(cfg.Logging.Level == "debug")

	// Deprecation notice for ping UUIDs
	uuids := cfg.Monitoring.PingUUIDs
	if uuids.Heartbeat != "" || uuids.SystemHealth != "" || uuids.DBDump != "" || uuids.Backup != "" || uuids.BackupIntegrity != "" {
		logger.Println("[INFO] Healthchecks ping UUIDs configured but no longer used — monitoring is now handled by the Hub")
	}

	// --- Initialize backup manager ---
	var backupMgr *backup.Manager
	stackProv := &stackAdapter{
		mgr:             stackMgr,
		getStoragePaths: func() []settings.StoragePath { return sett.GetStoragePaths() },
	}
	if cfg.Backup.Enabled {
		backupMgr = backup.NewManager(cfg, pinger, sett, logger)
		backupMgr.SetStackProvider(stackProv)
		backupMgr.AfterBackup = func() {
			nextDBDump := scheduler.NextDailyRun(cfg.Backup.DBDumpSchedule)
			nextBackup := scheduler.NextDailyRun(cfg.Backup.ResticSchedule)
			backupMgr.RefreshCache(nextDBDump, nextBackup)
		}
		go backupMgr.LoadSnapshotHistory()
	}

	// --- Initialize cross-drive backup runner ---
	crossDriveRunner := backup.NewCrossDriveRunner(sett, stackProv, cfg.Paths.SystemDataPath, cfg.Paths.StacksDir, logger, cfg.Logging.Level == "debug")

	// Wire cross-drive → backup manager for pre-backup DB dumps
	if backupMgr != nil {
		crossDriveRunner.SetDBDumper(backupMgr)
		crossDriveRunner.SetVolumeDumper(backupMgr)
	}

	// --- Initialize alert manager ---
	alertMgr := web.NewAlertManager(logger)

	// --- Initialize notifier ---
	notifier := notify.New(cfg.Hub.URL, cfg.Hub.APIKey, cfg.Customer.ID, sett, logger, cfg.Logging.Level == "debug")

	// --- Initialize self-updater ---
	var updater *selfupdate.Updater
	if cfg.SelfUpdate.Enabled {
		composePath := filepath.Join(filepath.Dir(cfg.Paths.DataDir), "docker-compose.yml")
		updater = selfupdate.NewUpdater(&cfg.SelfUpdate, &cfg.Git, Version, cfg.Paths.DataDir, composePath, logger, cfg.Logging.Level == "debug")
		updater.SetBackupRunningCheck(func() bool {
			return backupMgr != nil && backupMgr.IsRunning()
		})
		// Check for post-update state (did a previous update succeed or fail?)
		if state := updater.VerifyStartup(); state != nil {
			notifier.NotifyControllerUpdated(state.PreviousVersion, state.TargetVersion, state.Status == "success")
		}
		logger.Printf("[INFO] Self-update enabled (check every %s, auto-update: %v, auto-update time: %s)",
			cfg.SelfUpdate.CheckInterval, cfg.SelfUpdate.AutoUpdate, cfg.SelfUpdate.AutoUpdateTime)
	}

	// --- Initialize scheduler ---
	sched := scheduler.New(logger)
	sched.SetDebug(cfg.Logging.Level == "debug")

	// Existing periodic tasks (migrated from ad-hoc goroutines)
	sched.Every("status-refresh", 30*time.Second, func(ctx context.Context) error {
		return stackMgr.RefreshStatus()
	})
	sched.Every("stack-scan", 2*time.Minute, func(ctx context.Context) error {
		return stackMgr.ScanStacks()
	})
	sched.Every("health-probes", 10*time.Second, func(ctx context.Context) error {
		return stackMgr.RunHealthProbes()
	})

	// Heartbeat — lightweight "I'm alive" signal
	sched.Every("heartbeat", 5*time.Minute, func(ctx context.Context) error {
		pinger.Ping(cfg.Monitoring.PingUUIDs.Heartbeat, "")
		return nil
	})

	// System health ping
	healthInterval, err := time.ParseDuration(cfg.Monitoring.SystemHealthInterval)
	if err != nil {
		healthInterval = 5 * time.Minute
	}
	sched.Every("system-health", healthInterval, func(ctx context.Context) error {
		healthReport := monitor.RunHealthCheck(cfg, cpuCollector, sett.GetStoragePaths(), logger)
		body := healthReport.FormatMessage()
		healthUUID := cfg.Monitoring.PingUUIDs.SystemHealth
		if healthReport.Status == "fail" {
			pinger.Fail(healthUUID, body)
		} else {
			pinger.Ping(healthUUID, body)
		}
		// Refresh dashboard alerts from health report
		updateAvailable := false
		latestVersion := ""
		if updater != nil {
			status := updater.GetStatus()
			if status.LastCheck != nil {
				updateAvailable = status.LastCheck.UpdateAvailable
				latestVersion = status.LastCheck.LatestVersion
			}
		}
		alertMgr.Refresh(healthReport, cfg, backupMgr, updateAvailable, latestVersion, sett.GetStoragePaths())
		// Notify on health status changes
		notifier.NotifyHealthChange(healthReport.Status, healthReport.Issues, healthReport.Warnings)
		return nil
	})

	// --- Central hub pusher (declared early so backup closure can reference it) ---
	var hubPusher *report.Pusher
	if cfg.Hub.URL != "" && cfg.Hub.APIKey != "" {
		hubPusher = report.NewPusher(&cfg.Hub, logger, cfg.Logging.Level == "debug")
		// Wire hub verification: update settings when hub reports customer status
		hubPusher.OnPushResponse = func(resp *report.PushResponse) {
			if resp.CustomerBlocked {
				sett.SetHubVerified(false, time.Now())
				logger.Printf("[WARN] Customer blocked on Hub — new deployments may be restricted")
			} else {
				sett.SetHubVerified(true, time.Now())
			}
		}
		// Wire hub push status into alert manager for dashboard alerts
		alertMgr.SetHubPushStatus(func() web.HubPushStatusData {
			s := hubPusher.GetStatus()
			return web.HubPushStatusData{
				LastAttempt: s.LastAttempt,
				LastSuccess: s.LastSuccess,
				LastError:   s.LastError,
				Consecutive: s.Consecutive,
			}
		})
	}

	// Backup daily jobs
	if cfg.Backup.Enabled && backupMgr != nil {
		sched.Daily("db-dump", cfg.Backup.DBDumpSchedule, func(ctx context.Context) error {
			err := backupMgr.RunDBDumps(ctx)
			if err != nil {
				notifier.NotifyDBDumpFailed("Adatbázis mentés sikertelen", err.Error())
			} else {
				notifier.NotifyDBDumpCompleted(notify.DBDumpDetails{})
			}
			return err
		})
		sched.Daily("backup", cfg.Backup.ResticSchedule, func(ctx context.Context) error {
			err := backupMgr.RunBackup(ctx)
			if err != nil {
				notifier.NotifyBackupFailed("Biztonsági mentés sikertelen", err.Error())
			} else {
				notifier.NotifyBackupCompleted(notify.BackupDetails{})
			}
			// Phase 3: Chain cross-drive backups immediately after restic (regardless of restic success)
			// Daily jobs run every night; weekly jobs only on Sunday
			if crossDriveRunner != nil {
				if cdErr := crossDriveRunner.RunAllScheduled(ctx, "daily"); cdErr != nil {
					logger.Printf("[WARN] Cross-drive daily backup had errors: %v", cdErr)
				}
				if time.Now().Weekday() == time.Sunday {
					if cdErr := crossDriveRunner.RunAllScheduled(ctx, "weekly"); cdErr != nil {
						logger.Printf("[WARN] Cross-drive weekly backup had errors: %v", cdErr)
					}
				}
			}
			// Push infra backup to Hub after all backup tiers complete
			if hubPusher != nil && cfg.Hub.Enabled {
				go pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
			}
			// Write local infra backup to all connected drives
			go writeLocalInfraBackup(cfg, sett, stackProv, logger)
			return err
		})

		// Weekly integrity check — Sunday 04:00
		sched.Daily("backup-integrity", "04:00", func(ctx context.Context) error {
			if time.Now().Weekday() != time.Sunday {
				return nil
			}
			err := backupMgr.RunIntegrityCheck(ctx)
			if err != nil {
				notifier.NotifyIntegrityFailed("Mentés integritás ellenőrzés sikertelen", err.Error())
			} else {
				notifier.NotifyIntegrityOK("Mentés integritás ellenőrzés sikeres")
			}
			return err
		})

		// Cache refresh: every 5 minutes
		sched.Every("backup-cache", 5*time.Minute, func(ctx context.Context) error {
			nextDBDump := scheduler.NextDailyRun(cfg.Backup.DBDumpSchedule)
			nextBackup := scheduler.NextDailyRun(cfg.Backup.ResticSchedule)
			backupMgr.RefreshCache(nextDBDump, nextBackup)
			return nil
		})
	}

	// Metrics prune — daily at 04:00
	if metricsStore != nil {
		sched.Daily("metrics-prune", "04:00", func(ctx context.Context) error {
			deleted, err := metricsStore.Prune(30 * 24 * time.Hour)
			if err != nil {
				return err
			}
			logger.Printf("[INFO] Pruned %d old metric rows", deleted)
			return nil
		})
	}

	// --- Central hub reporting schedule ---
	if hubPusher != nil {
		if cfg.Hub.Enabled {
			pushInterval, err := time.ParseDuration(cfg.Hub.PushInterval)
			if err != nil {
				pushInterval = 15 * time.Minute
			}
			sched.Every("hub-report", pushInterval, func(ctx context.Context) error {
				r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), logger)
				if err := hubPusher.Push(r); err != nil {
					return err
				}
				// Drain pending events (e.g., DR recovery completed) after successful push
				if events := sett.DrainPendingEvents(); len(events) > 0 {
					for _, ev := range events {
						notifier.Notify(ev.EventType, ev.Severity, ev.Message, ev.Details)
					}
					logger.Printf("[INFO] Drained %d pending events to Hub", len(events))
				}
				return nil
			})
			logger.Printf("[INFO] Hub reporting enabled (every %s to %s)", pushInterval, cfg.Hub.URL)
		} else {
			logger.Printf("[INFO] Hub reporting disabled — will send disabled notification to %s", cfg.Hub.URL)
		}
	}

	// Self-update scheduler jobs
	if cfg.SelfUpdate.Enabled && updater != nil {
		// Periodic version check (populates UI, never triggers update)
		checkInterval, ciErr := time.ParseDuration(cfg.SelfUpdate.CheckInterval)
		if ciErr != nil {
			checkInterval = 6 * time.Hour
		}
		sched.Every("selfupdate-check", checkInterval, func(ctx context.Context) error {
			result := updater.CheckForUpdate()
			if result.UpdateAvailable {
				logger.Printf("[INFO] Update available: %s -> %s", result.CurrentVersion, result.LatestVersion)
			}
			return nil
		})

		// Auto-update (daily, fires after typical backup completion)
		if cfg.SelfUpdate.AutoUpdate {
			sched.Daily("selfupdate-auto", cfg.SelfUpdate.AutoUpdateTime, func(ctx context.Context) error {
				result := updater.CheckForUpdate()
				if !result.UpdateAvailable {
					return nil
				}
				if err := updater.TriggerUpdate("auto"); err != nil {
					logger.Printf("[WARN] Auto-update skipped: %v", err)
				}
				return nil
			})
		}
	}

	// --- Storage watchdog ---
	storageWatchdog := monitor.NewStorageWatchdog(sett, &watchdogStackAdapter{mgr: stackMgr}, notifier, cfg, logger)
	storageWatchdog.SetAlertRefresh(func() {
		healthReport := monitor.RunHealthCheck(cfg, cpuCollector, sett.GetStoragePaths(), logger)
		updateAvailable := false
		latestVersion := ""
		if updater != nil {
			status := updater.GetStatus()
			if status.LastCheck != nil {
				updateAvailable = status.LastCheck.UpdateAvailable
				latestVersion = status.LastCheck.LatestVersion
			}
		}
		alertMgr.Refresh(healthReport, cfg, backupMgr, updateAvailable, latestVersion, sett.GetStoragePaths())
	})
	if hubPusher != nil {
		storageWatchdog.SetHubReportPusher(func() {
			r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), logger)
			hubPusher.Push(r)
		})
	}
	if backupMgr != nil {
		storageWatchdog.SetRepoUnlocker(func(ctx context.Context, repoPath string) error {
			return backupMgr.UnlockRepo(ctx, repoPath)
		})
	}
	sched.Every("storage-watchdog", 5*time.Second, func(ctx context.Context) error {
		return storageWatchdog.Check(ctx)
	})

	// --- Asset syncer (download from Hub) ---
	var assetsSyncer *assets.Syncer
	if cfg.Hub.Enabled && cfg.Assets.SyncEnabled && cfg.Hub.URL != "" && cfg.Hub.APIKey != "" {
		assetsDir := filepath.Join(cfg.Paths.DataDir, "assets")
		assetsSyncer = assets.New(cfg.Hub.URL, cfg.Hub.APIKey, assetsDir, "/usr/share/felhom/assets", logger, cfg.Logging.Level == "debug")
		go func() {
			time.Sleep(10 * time.Second)
			if err := assetsSyncer.Sync(ctx); err != nil {
				logger.Printf("[WARN] Initial asset sync failed: %v", err)
			}
		}()
		sched.Daily("asset-sync", cfg.Assets.SyncSchedule, func(ctx context.Context) error {
			return assetsSyncer.Sync(ctx)
		})
		logger.Printf("[INFO] Asset sync enabled (daily at %s from Hub)", cfg.Assets.SyncSchedule)
	}

	// --- Startup self-test ---
	selfTestResult := selftest.Run(cfg, sett, logger)

	sched.Start(ctx)
	defer sched.Stop()

	// Generate recovery info file if retrieval password is set
	if rp := sett.GetRetrievalPassword(); rp != "" {
		go func() {
			info := recovery.Info{
				CustomerID:        cfg.Customer.ID,
				RetrievalPassword: rp,
				HubURL:            cfg.Hub.URL,
				SupportEmail:      "support@felhom.eu",
				SupportURL:        "https://felhom.eu/kapcsolat",
			}
			if err := recovery.GenerateRecoveryFile(info, Version, cfg.Paths.DataDir); err != nil {
				logger.Printf("[WARN] Failed to generate recovery-info.txt: %v", err)
			}
		}()
	}

	// Fire startup pings + hub report immediately (don't wait for first scheduler tick)
	go func() {
		time.Sleep(5 * time.Second) // Let all subsystems fully initialize

		// Push controller startup event to Hub
		notifier.NotifyControllerStarted(Version, map[string]interface{}{
			"selftest_pass": selfTestResult.Pass,
			"selftest_warn": selfTestResult.Warn,
			"selftest_fail": selfTestResult.Fail,
		})

		// Heartbeat ping
		pinger.Ping(cfg.Monitoring.PingUUIDs.Heartbeat, "startup")
		logger.Println("[INFO] Startup heartbeat ping sent")

		// System health ping
		healthReport := monitor.RunHealthCheck(cfg, cpuCollector, sett.GetStoragePaths(), logger)
		body := healthReport.FormatMessage()
		healthUUID := cfg.Monitoring.PingUUIDs.SystemHealth
		if healthReport.Status == "fail" {
			pinger.Fail(healthUUID, body)
		} else {
			pinger.Ping(healthUUID, body)
		}
		logger.Printf("[INFO] Startup health ping sent (status: %s)", healthReport.Status)

		// Hub report
		if hubPusher != nil {
			if cfg.Hub.Enabled {
				r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), logger)
				var pushErr error
				for attempt := 1; attempt <= 3; attempt++ {
					pushErr = hubPusher.Push(r)
					if pushErr == nil {
						logger.Println("[INFO] Startup hub report sent")
						break
					}
					logger.Printf("[WARN] Startup hub report attempt %d/3 failed: %v", attempt, pushErr)
					if attempt < 3 {
						time.Sleep(15 * time.Second)
					}
				}
				if pushErr != nil {
					logger.Printf("[WARN] Startup hub report failed after 3 attempts — next scheduled push in %s", cfg.Hub.PushInterval)
				}
				// Also push infra backup on startup
				go pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
				// Write local infra backup to all connected drives
				go writeLocalInfraBackup(cfg, sett, stackProv, logger)
			} else {
				// Send a minimal "disabled" notification so hub knows reporting is intentionally off
				r := &report.Report{
					Version:           1,
					CustomerID:        cfg.Customer.ID,
					CustomerName:      cfg.Customer.Name,
					ControllerVersion: Version,
					Timestamp:         time.Now().UTC(),
					ReportingDisabled: true,
					Health:            report.HealthReport{Status: "disabled", Issues: []string{}, Warnings: []string{}},
					Stacks:            report.StacksReport{Deployed: []string{}, Available: []string{}},
					Containers:        report.ContainerReport{List: []report.ContainerDetailReport{}},
				}
				hubPusher.PushOnce(r)
			}
		}

		// Initial self-update check (so settings page shows version info quickly)
		if updater != nil {
			time.Sleep(25 * time.Second) // Additional delay after hub report
			result := updater.CheckForUpdate()
			if result.UpdateAvailable {
				logger.Printf("[INFO] Startup: update available %s -> %s", result.CurrentVersion, result.LatestVersion)
			} else if result.Error != "" {
				logger.Printf("[DEBUG] Startup version check: %s", result.Error)
			}
		}
	}()

	// Initial backup cache population (don't block startup)
	if cfg.Backup.Enabled && backupMgr != nil {
		go func() {
			nextDBDump := scheduler.NextDailyRun(cfg.Backup.DBDumpSchedule)
			nextBackup := scheduler.NextDailyRun(cfg.Backup.ResticSchedule)
			backupMgr.RefreshCache(nextDBDump, nextBackup)
		}()
	}

	// Sync notification preferences to hub on startup (handles hub DB rebuild recovery)
	if notifier.IsEnabled() {
		go func() {
			prefs := sett.GetNotificationPrefs()
			if prefs.Email != "" {
				if err := notifier.SyncPreferences(prefs.Email, prefs.EnabledEvents, prefs.CooldownHours); err != nil {
					logger.Printf("[WARN] Failed to sync notification preferences on startup: %v", err)
				}
			}
		}()
	}

	// Initial alert refresh (so alerts appear immediately, not after first 5min health check)
	go func() {
		report := monitor.RunHealthCheck(cfg, cpuCollector, sett.GetStoragePaths(), logger)
		alertMgr.Refresh(report, cfg, backupMgr, false, "")
	}()

	// --- Initialize API router ---
	apiRouter := api.NewRouter(cfg, *configPath, sett, stackMgr, syncer, cpuCollector, backupMgr, crossDriveRunner, metricsStore, updater, notifier, logger)
	if hubPusher != nil {
		apiRouter.OnConfigApplied = func() {
			pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
		}
		apiRouter.OnCrossDriveComplete = func() {
			pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
			writeLocalInfraBackup(cfg, sett, stackProv, logger)
		}
	}
	if assetsSyncer != nil {
		apiRouter.SetAssetsSyncer(assetsSyncer)
	}

	// --- Initialize Cloudflare geo-restriction ---
	var geoSync *cf.GeoSyncManager
	if cfg.Infrastructure.CFAPIToken != "" {
		cfClient := cf.New(cfg.Infrastructure.CFAPIToken, logger, cfg.Logging.Level == "debug")
		geoStacks := &geoStackAdapter{mgr: stackMgr, domain: cfg.Customer.Domain}
		geoSync = cf.NewGeoSyncManager(cfClient, sett, cfg.Customer.Domain, geoStacks, logger)
		geoSync.SetDebug(cfg.Logging.Level == "debug")
		apiRouter.SetGeoSync(geoSync)

		// Re-sync geo rules when apps are deployed/removed
		apiRouter.OnGeoRelevantChange = func() {
			geo := sett.GetGeoRestriction()
			if geo != nil && geo.Enabled {
				if err := geoSync.Sync(context.Background()); err != nil {
					logger.Printf("[WARN] Geo sync after app change failed: %v", err)
				}
			}
		}

		// Periodic verification every 6 hours
		sched.Every("geo-verify", 6*time.Hour, func(ctx context.Context) error {
			geo := sett.GetGeoRestriction()
			if geo == nil || !geo.Enabled {
				return nil
			}
			return geoSync.Sync(ctx)
		})

		// Initial sync (delayed, non-blocking)
		go func() {
			time.Sleep(15 * time.Second)
			if geo := sett.GetGeoRestriction(); geo != nil && geo.Enabled {
				if err := geoSync.Sync(context.Background()); err != nil {
					logger.Printf("[WARN] Initial geo sync failed: %v", err)
				}
			}
		}()

		logger.Printf("[INFO] Geo-restriction support enabled (CF API token configured)")
	}

	// --- Initialize integration manager ---
	integrationStacks := &integrationStackAdapter{mgr: stackMgr}
	integrationMgr := integrations.NewManager(sett, integrationStacks, cfg.Customer.Domain, cfg.Paths.StacksDir, encKey, logger)
	integrationMgr.SetDebug(cfg.Logging.Level == "debug")
	apiRouter.SetIntegrationManager(integrationMgr)

	// --- Initialize app exporter ---
	exportProv := &exportAdapter{mgr: stackMgr, encKey: encKey}
	appExporter := appexport.NewExporter(exportProv, logger, Version)
	appExporter.SetDebug(cfg.Logging.Level == "debug")
	apiRouter.SetDebug(cfg.Logging.Level == "debug")

	// --- Initialize web server ---
	webServer := web.NewServer(cfg, stackMgr, cpuCollector, backupMgr, crossDriveRunner, sched, sett, alertMgr, notifier, updater, logger, Version)
	webServer.SetEncryptionKey(encKey)
	webServer.SetAppExporter(appExporter)
	webServer.SetIntegrationManager(integrationMgr)
	webServer.SetStorageWatchdog(storageWatchdog)
	if assetsSyncer != nil {
		webServer.SetAssetsSyncer(assetsSyncer)
	}
	if hubPusher != nil {
		webServer.SetHubPushStatus(func() web.HubPushStatusData {
			s := hubPusher.GetStatus()
			return web.HubPushStatusData{
				LastAttempt: s.LastAttempt,
				LastSuccess: s.LastSuccess,
				LastError:   s.LastError,
				Consecutive: s.Consecutive,
			}
		})
	}
	if logBuffer != nil {
		webServer.SetLogBuffer(logBuffer)
	}
	webServer.SetStartTime(startTime)

	// Wire debug callbacks (only in debug mode)
	if cfg.Logging.Level == "debug" {
		dc := &web.DebugCallbacks{}
		if hubPusher != nil {
			dc.TriggerHubReportPush = func() error {
				r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), logger)
				return hubPusher.Push(r)
			}
			dc.TriggerHubInfraPush = func() error {
				pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
				return nil
			}
		}
		dc.TriggerLocalInfraWrite = func() error {
			writeLocalInfraBackup(cfg, sett, stackProv, logger)
			return nil
		}
		dc.HubConnectivityTest = func() (int, int64, error) {
			start := time.Now()
			client := &http.Client{Timeout: 10 * time.Second}
			resp, err := client.Get(cfg.Hub.URL + "/healthz")
			latency := time.Since(start).Milliseconds()
			if err != nil {
				return 0, latency, err
			}
			resp.Body.Close()
			return resp.StatusCode, latency, nil
		}
		if cfg.Git.RepoURL != "" {
			dc.GiteaConnectivityTest = func() (int, int64, error) {
				start := time.Now()
				client := &http.Client{Timeout: 5 * time.Second}
				resp, err := client.Head(cfg.Git.RepoURL)
				latency := time.Since(start).Milliseconds()
				if err != nil {
					return 0, latency, err
				}
				resp.Body.Close()
				return resp.StatusCode, latency, nil
			}
		}
		dc.GetTelemetryPreview = func() ([]report.AppTelemetry, error) {
			return report.BuildAppTelemetryForDebug(stackMgr, metricsStore, logger), nil
		}
		webServer.SetDebugCallbacks(dc)
	}

	// --- Initialize drive migrator ---
	driveMigrator := &storage.DriveMigrator{
		Sett:          sett,
		StackProvider: &driveMigrateStackAdapter{mgr: stackMgr},
		Logger:        logger,
	}
	// Only set BackupTrigger if backup is enabled (avoid non-nil interface with nil concrete value)
	if backupMgr != nil {
		driveMigrator.BackupTrigger = backupMgr
	}
	driveMigrator.AlertRefresh = func() {
		healthReport := monitor.RunHealthCheck(cfg, cpuCollector, sett.GetStoragePaths(), logger)
		updateAvailable := false
		latestVersion := ""
		if updater != nil {
			status := updater.GetStatus()
			if status.LastCheck != nil {
				updateAvailable = status.LastCheck.UpdateAvailable
				latestVersion = status.LastCheck.LatestVersion
			}
		}
		alertMgr.Refresh(healthReport, cfg, backupMgr, updateAvailable, latestVersion, sett.GetStoragePaths())
	}
	if hubPusher != nil {
		driveMigrator.PushHubReport = func() {
			r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), logger)
			hubPusher.Push(r)
		}
		driveMigrator.PushInfraBackup = func() {
			pushInfraBackup(cfg, sett, stackProv, hubPusher, logger)
		}
	}
	driveMigrator.SyncFBMounts = func() {
		webServer.SyncFileBrowserMounts()
	}
	webServer.SetDriveMigrator(driveMigrator)

	// Wire migration-active check into backup manager
	if backupMgr != nil {
		backupMgr.MigrationActiveCheck = driveMigrator.IsActive
	}

	// --- Build HTTP mux ---
	mux := http.NewServeMux()

	// API routes (no auth for health endpoint, auth for everything else)
	mux.HandleFunc("/api/health", apiRouter.HealthHandler)
	// Storage API routes handled by web server (longer prefix takes precedence over /api/)
	mux.Handle("/api/storage/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeStorageAPI))))
	// App export/import API routes handled by web server
	mux.Handle("/api/export/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeExportAPI))))
	// Debug API routes handled by web server (debug-mode gating inside handler)
	mux.Handle("/api/debug/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeDebugAPI))))
	// Self-update API — accepts session auth OR hub API key (for external triggering)
	// CsrfProtect exempts Bearer-token requests automatically.
	mux.Handle("/api/selfupdate/", selfUpdateAuthMiddleware(cfg, webServer, webServer.CsrfProtect(http.HandlerFunc(apiRouter.ServeHTTP))))
	// Config API — accepts session auth OR hub API key (for Hub config push)
	mux.Handle("/api/config/", selfUpdateAuthMiddleware(cfg, webServer, webServer.CsrfProtect(http.HandlerFunc(apiRouter.ServeHTTP))))
	// Geo API — accepts session auth OR hub API key (for Hub geo-disable)
	mux.Handle("/api/geo/", selfUpdateAuthMiddleware(cfg, webServer, webServer.CsrfProtect(http.HandlerFunc(apiRouter.ServeHTTP))))
	mux.Handle("/api/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(apiRouter.ServeHTTP))))

	// Web UI routes (auth required)
	mux.Handle("/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeHTTP))))

	// --- Start HTTP server ---
	server := &http.Server{
		Addr:         cfg.Web.Listen,
		Handler:      webServer.CatchAllMiddleware(mux),
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 60 * time.Second,
		IdleTimeout:  120 * time.Second,
	}

	sigCh := make(chan os.Signal, 1)
	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		sig := <-sigCh
		logger.Printf("[INFO] Received signal %v, shutting down...", sig)
		cancel()

		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 15*time.Second)
		defer shutdownCancel()

		if err := server.Shutdown(shutdownCtx); err != nil {
			logger.Printf("[ERROR] HTTP server shutdown error: %v", err)
		}
	}()

	logger.Printf("[INFO] Web UI listening on %s", cfg.Web.Listen)
	if err := server.ListenAndServe(); err != http.ErrServerClosed {
		logger.Fatalf("[FATAL] HTTP server error: %v", err)
	}

	logger.Println("[INFO] felhom-controller stopped")
}

// selfUpdateAuthMiddleware allows access via session auth (normal UI) OR hub API key bearer token (external).
func selfUpdateAuthMiddleware(cfg *config.Config, webServer *web.Server, next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// Check bearer token first (for external API calls: hub, build scripts)
		if auth := r.Header.Get("Authorization"); strings.HasPrefix(auth, "Bearer ") {
			token := strings.TrimPrefix(auth, "Bearer ")
			if token != "" && cfg.Hub.APIKey != "" && subtle.ConstantTimeCompare([]byte(token), []byte(cfg.Hub.APIKey)) == 1 {
				next.ServeHTTP(w, r)
				return
			}
		}
		// Fall back to session auth
		webServer.RequireAuth(next).ServeHTTP(w, r)
	})
}

func setupLogger(cfg *config.Config) (*log.Logger, *web.LogBuffer) {
	if cfg.Logging.Level == "debug" {
		logBuffer := web.NewLogBuffer(1000)
		logger := log.New(io.MultiWriter(os.Stdout, logBuffer), "", log.LstdFlags|log.Lshortfile)
		return logger, logBuffer
	}
	return log.New(os.Stdout, "", log.LstdFlags), nil
}

// stackAdapter implements backup.StackDataProvider using stacks.Manager.
type stackAdapter struct {
	mgr             *stacks.Manager
	getStoragePaths func() []settings.StoragePath
}

func (a *stackAdapter) GetStackComposePath(name string) (string, bool) {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return "", false
	}
	return s.ComposePath, true
}

func (a *stackAdapter) ListDeployedStacks() []backup.StackSummary {
	var result []backup.StackSummary
	for _, s := range a.mgr.GetStacks() {
		if !s.Deployed {
			continue
		}
		result = append(result, backup.StackSummary{
			Name:        s.Name,
			DisplayName: s.Meta.DisplayName,
			ComposePath: s.ComposePath,
			NeedsHDD:    s.Meta.Resources.NeedsHDD,
			HasVolumes:  len(backup.ParseComposeNamedVolumes(s.ComposePath)) > 0,
		})
	}
	return result
}

func (a *stackAdapter) StopStack(name string) error {
	return a.mgr.StopStack(name)
}

func (a *stackAdapter) StartStack(name string) error {
	return a.mgr.StartStack(name)
}

func (a *stackAdapter) GetStackHDDMounts(name string) []string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}

	// Priority 1: Read the app's own HDD_PATH from its app.yaml
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return stacks.ParseComposeHDDMounts(s.ComposePath, appCfg.Env["HDD_PATH"])
	}

	// Priority 2: Try all registered storage paths (fallback)
	var allMounts []string
	seen := make(map[string]bool)
	for _, sp := range a.getStoragePaths() {
		mounts := stacks.ParseComposeHDDMounts(s.ComposePath, sp.Path)
		for _, m := range mounts {
			if !seen[m] {
				seen[m] = true
				allMounts = append(allMounts, m)
			}
		}
	}
	return allMounts
}

func (a *stackAdapter) GetDockerVolumes(name string) []string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}
	return backup.ResolveDockerVolumeNames(s.ComposePath)
}

func (a *stackAdapter) GetStackHDDPath(name string) string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return ""
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return filepath.Clean(appCfg.Env["HDD_PATH"])
	}
	return ""
}

// integrationStackAdapter implements integrations.StackProvider using stacks.Manager.
type integrationStackAdapter struct {
	mgr *stacks.Manager
}

func (a *integrationStackAdapter) GetStack(name string) (*stacks.Stack, bool) {
	return a.mgr.GetStack(name)
}

func (a *integrationStackAdapter) GetStacks() []stacks.Stack {
	return a.mgr.GetStacks()
}

func (a *integrationStackAdapter) RestartStack(name string) error {
	return a.mgr.RestartStack(name)
}

// geoStackAdapter implements cloudflare.StackLister for geo-restriction sync.
type geoStackAdapter struct {
	mgr    *stacks.Manager
	domain string
}

func (a *geoStackAdapter) GetDeployedHostnames() map[string]string {
	result := make(map[string]string)
	for _, stack := range a.mgr.GetStacks() {
		if !stack.Deployed {
			continue
		}
		subdomain := stack.Meta.Subdomain
		// Check for custom subdomain in app.yaml
		if appCfg := a.mgr.LoadAppConfigByName(stack.Name); appCfg != nil {
			if sd, ok := appCfg.Env["SUBDOMAIN"]; ok && sd != "" {
				subdomain = sd
			}
		}
		if subdomain != "" {
			result[stack.Name] = subdomain + "." + a.domain
		}
	}
	return result
}

// watchdogStackAdapter implements monitor.WatchdogStackProvider using stacks.Manager.
type watchdogStackAdapter struct {
	mgr *stacks.Manager
}

func (a *watchdogStackAdapter) ListDeployedStacks() []monitor.WatchdogStackInfo {
	var result []monitor.WatchdogStackInfo
	for _, s := range a.mgr.GetStacks() {
		if !s.Deployed {
			continue
		}
		result = append(result, monitor.WatchdogStackInfo{Name: s.Name})
	}
	return result
}

func (a *watchdogStackAdapter) GetStackHDDPath(name string) string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return ""
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return filepath.Clean(appCfg.Env["HDD_PATH"])
	}
	return ""
}

func (a *watchdogStackAdapter) StopStack(name string) error {
	return a.mgr.StopStack(name)
}

func (a *watchdogStackAdapter) StartStack(name string) error {
	return a.mgr.StartStack(name)
}

// driveMigrateStackAdapter implements storage.StackProviderForMigration using stacks.Manager.
type driveMigrateStackAdapter struct {
	mgr *stacks.Manager
}

func (a *driveMigrateStackAdapter) ListDeployedStacks() []storage.StackSummaryForMigration {
	var result []storage.StackSummaryForMigration
	for _, s := range a.mgr.GetStacks() {
		if !s.Deployed {
			continue
		}
		result = append(result, storage.StackSummaryForMigration{
			Name:        s.Name,
			DisplayName: s.Meta.DisplayName,
		})
	}
	return result
}

func (a *driveMigrateStackAdapter) GetStackHDDPath(name string) string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return ""
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return filepath.Clean(appCfg.Env["HDD_PATH"])
	}
	return ""
}

func (a *driveMigrateStackAdapter) StopStack(name string) error {
	return a.mgr.StopStack(name)
}

func (a *driveMigrateStackAdapter) StartStack(name string) error {
	return a.mgr.StartStack(name)
}

func (a *driveMigrateStackAdapter) UpdateStackHDDPath(name, newPath string) error {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return fmt.Errorf("stack not found: %s", name)
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg == nil {
		return fmt.Errorf("app.yaml not found for stack: %s", name)
	}
	appCfg.Env["HDD_PATH"] = newPath
	return stacks.SaveAppConfig(stackDir, appCfg, nil, nil)
}

func (a *driveMigrateStackAdapter) StackExists(name string) bool {
	_, ok := a.mgr.GetStack(name)
	return ok
}

// exportAdapter implements appexport.ExportStackProvider using stacks.Manager.
type exportAdapter struct {
	mgr    *stacks.Manager
	encKey []byte
}

func (a *exportAdapter) GetStackDir(name string) (string, bool) {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return "", false
	}
	return filepath.Dir(s.ComposePath), true
}

func (a *exportAdapter) GetStackComposePath(name string) (string, bool) {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return "", false
	}
	return s.ComposePath, true
}

func (a *exportAdapter) GetStackHDDMounts(name string) []string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return stacks.ParseComposeHDDMounts(s.ComposePath, appCfg.Env["HDD_PATH"])
	}
	return nil
}

func (a *exportAdapter) GetStackHDDPath(name string) string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return ""
	}
	stackDir := filepath.Dir(s.ComposePath)
	appCfg := stacks.LoadAppConfig(stackDir)
	if appCfg != nil && appCfg.Env["HDD_PATH"] != "" {
		return filepath.Clean(appCfg.Env["HDD_PATH"])
	}
	return ""
}

func (a *exportAdapter) IsStackRunning(name string) bool {
	s, ok := a.mgr.GetStack(name)
	return ok && s.State == stacks.StateRunning
}

func (a *exportAdapter) StopStack(name string) error {
	return a.mgr.StopStack(name)
}

func (a *exportAdapter) StartStack(name string) error {
	return a.mgr.StartStack(name)
}

func (a *exportAdapter) GetStackDisplayName(name string) string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return name
	}
	return s.Meta.DisplayName
}

func (a *exportAdapter) GetStackNeedsHDD(name string) bool {
	s, ok := a.mgr.GetStack(name)
	return ok && s.Meta.Resources.NeedsHDD
}

func (a *exportAdapter) GetDockerVolumes(name string) []string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}
	return backup.ResolveDockerVolumeNames(s.ComposePath)
}

func (a *exportAdapter) IsStackDeployed(name string) bool {
	s, ok := a.mgr.GetStack(name)
	return ok && s.Deployed
}

func (a *exportAdapter) GetDecryptedEnv(name string) map[string]string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}
	stackDir := filepath.Dir(s.ComposePath)
	cfg := stacks.LoadAppConfigDecrypted(stackDir, a.encKey)
	if cfg == nil {
		return nil
	}
	return cfg.Env
}

func (a *exportAdapter) GetStacksBaseDir() string {
	return a.mgr.GetStacksBaseDir()
}

func (a *exportAdapter) SaveEncryptedAppConfig(stackDir string, env map[string]string) error {
	meta := stacks.LoadMetadata(stackDir)
	sensitiveVars := stacks.SensitiveEnvVars(&meta)
	cfg := &stacks.AppConfig{
		Deployed:   true,
		DeployedAt: time.Now().Format(time.RFC3339),
		Env:        env,
	}
	return stacks.SaveAppConfig(stackDir, cfg, a.encKey, sensitiveVars)
}

func (a *exportAdapter) RefreshStacks() error {
	return a.mgr.RefreshStatus()
}

func (a *exportAdapter) RemoveStackVolumes(name string) error {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return fmt.Errorf("stack %q not found", name)
	}
	stackDir := filepath.Dir(s.ComposePath)

	// Build env from decrypted app config
	cmdEnv := os.Environ()
	appCfg := stacks.LoadAppConfigDecrypted(stackDir, a.encKey)
	if appCfg != nil {
		for k, v := range appCfg.Env {
			cmdEnv = append(cmdEnv, k+"="+v)
		}
	}

	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
	defer cancel()
	cmd := exec.CommandContext(ctx, "docker", "compose", "down", "--volumes")
	cmd.Dir = stackDir
	cmd.Env = cmdEnv
	out, err := cmd.CombinedOutput()
	if err != nil {
		return fmt.Errorf("compose down --volumes: %s — %w", strings.TrimSpace(string(out)), err)
	}
	return nil
}

// pushInfraBackup builds and sends the infrastructure snapshot to the Hub.
func pushInfraBackup(cfg *config.Config, sett *settings.Settings,
	stackProv *stackAdapter, pusher *report.Pusher, logger *log.Logger) {

	encKeyPath := filepath.Join(cfg.Paths.DataDir, "encryption.key")
	ib, err := report.BuildInfraBackup(
		cfg.Customer.ID, cfg.Customer.Domain, Version,
		"/opt/docker/felhom-controller/controller.yaml",
		filepath.Join(cfg.Paths.DataDir, "settings.json"),
		cfg.Backup.ResticPasswordFile,
		encKeyPath,
		cfg.Paths.SystemDataPath,
		sett, stackProv, logger,
	)
	if err != nil {
		logger.Printf("[WARN] Failed to build infra backup: %v", err)
		return
	}

	data, err := json.Marshal(ib)
	if err != nil {
		logger.Printf("[WARN] Failed to marshal infra backup: %v", err)
		return
	}

	if err := pusher.PushInfraBackup(data); err != nil {
		logger.Printf("[WARN] Failed to push infra backup to Hub: %v", err)
	}
}

// fileExists returns true if the path exists (file or directory).
func fileExists(path string) bool {
	_, err := os.Stat(path)
	return err == nil
}

// runSetupMode starts the setup wizard on dual listeners and blocks until signal.
func runSetupMode(cfg *config.Config, logger *log.Logger) {
	ips := setup.DetectLocalIPs()
	setup.LogSetupMode(cfg.Customer.Domain, ips, cfg.Web.SetupListen, logger)

	setupSrv := setup.NewServer(cfg, cfg.Paths.DataDir, logger, Version)
	handler := setupSrv.Handler()

	// Health endpoint wrapper (returns setup_mode: true)
	healthHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok": true, "message": "felhom-controller is healthy",
			"setup_mode": true, "version": Version,
		})
	})

	// Mux for both listeners
	mux := http.NewServeMux()
	mux.HandleFunc("/api/health", healthHandler)
	mux.Handle("/", handler)

	// Start main listener (:8080, behind Traefik for domain access)
	mainServer := &http.Server{
		Addr:         cfg.Web.Listen,
		Handler:      mux,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 60 * time.Second,
		IdleTimeout:  120 * time.Second,
	}
	go func() {
		logger.Printf("[INFO] Setup wizard (main) listening on %s", cfg.Web.Listen)
		if err := mainServer.ListenAndServe(); err != http.ErrServerClosed {
			logger.Printf("[ERROR] Main HTTP server error: %v", err)
		}
	}()

	// Start setup-only listener (:8081, direct HTTP for LAN access)
	setupServer := &http.Server{
		Addr:         cfg.Web.SetupListen,
		Handler:      mux,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 60 * time.Second,
		IdleTimeout:  120 * time.Second,
	}
	go func() {
		logger.Printf("[INFO] Setup wizard (LAN) listening on %s", cfg.Web.SetupListen)
		if err := setupServer.ListenAndServe(); err != http.ErrServerClosed {
			logger.Printf("[ERROR] Setup HTTP server error: %v", err)
		}
	}()

	// Wait for signal
	sigCh := make(chan os.Signal, 1)
	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
	sig := <-sigCh
	logger.Printf("[INFO] Received signal %v, shutting down setup wizard...", sig)

	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer shutdownCancel()
	mainServer.Shutdown(shutdownCtx)
	setupServer.Shutdown(shutdownCtx)
	logger.Println("[INFO] Setup wizard stopped")
}

// writeLocalInfraBackup builds an infra snapshot and writes it to all connected drives.
func writeLocalInfraBackup(cfg *config.Config, sett *settings.Settings,
	stackProv *stackAdapter, logger *log.Logger) {

	encKeyPath := filepath.Join(cfg.Paths.DataDir, "encryption.key")
	ib, err := report.BuildInfraBackup(
		cfg.Customer.ID, cfg.Customer.Domain, Version,
		"/opt/docker/felhom-controller/controller.yaml",
		filepath.Join(cfg.Paths.DataDir, "settings.json"),
		cfg.Backup.ResticPasswordFile,
		encKeyPath,
		cfg.Paths.SystemDataPath,
		sett, stackProv, logger,
	)
	if err != nil {
		logger.Printf("[WARN] Failed to build infra backup for local write: %v", err)
		return
	}

	data, err := json.Marshal(ib)
	if err != nil {
		logger.Printf("[WARN] Failed to marshal infra backup for local write: %v", err)
		return
	}

	// Collect all connected drive paths (skip disconnected and decommissioned)
	var drives []string
	for _, sp := range sett.GetStoragePaths() {
		if !sp.Disconnected && !sp.Decommissioned {
			drives = append(drives, sp.Path)
		}
	}
	// Also include system data path if set
	if cfg.Paths.SystemDataPath != "" {
		drives = append(drives, cfg.Paths.SystemDataPath)
	}

	if len(drives) == 0 {
		logger.Println("[DEBUG] No connected drives for local infra backup")
		return
	}

	backup.WriteLocalInfraBackup(data, cfg.Customer.ID, Version, ib.Timestamp, drives, logger, cfg.Logging.Level == "debug")
}

// discoverHDDPaths scans deployed apps' app.yaml for HDD_PATH env values.
func discoverHDDPaths(stacksDir string, logger *log.Logger) []string {
	entries, err := os.ReadDir(stacksDir)
	if err != nil {
		logger.Printf("[WARN] Cannot read stacks dir for HDD path discovery: %v", err)
		return nil
	}
	seen := make(map[string]bool)
	var paths []string
	for _, e := range entries {
		if !e.IsDir() {
			continue
		}
		appCfg := stacks.LoadAppConfig(filepath.Join(stacksDir, e.Name()))
		if appCfg == nil || !appCfg.Deployed {
			continue
		}
		if hddPath, ok := appCfg.Env["HDD_PATH"]; ok && hddPath != "" {
			cleaned := filepath.Clean(hddPath)
			if !seen[cleaned] {
				seen[cleaned] = true
				paths = append(paths, cleaned)
			}
		}
	}
	return paths
}