felhom-controller/controller/cmd/controller/main.go

package main

import (
	"context"
	"encoding/json"
	"errors"
	"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/agentapi"
	"gitea.dooplex.hu/admin/felhom-controller/internal/api"
	"gitea.dooplex.hu/admin/felhom-controller/internal/appbackup"
	"gitea.dooplex.hu/admin/felhom-controller/internal/appexport"
	"gitea.dooplex.hu/admin/felhom-controller/internal/assets"
	"gitea.dooplex.hu/admin/felhom-controller/internal/backup"
	"gitea.dooplex.hu/admin/felhom-controller/internal/bootstrap"
	"gitea.dooplex.hu/admin/felhom-controller/internal/channelhealth"
	cf "gitea.dooplex.hu/admin/felhom-controller/internal/cloudflare"
	"gitea.dooplex.hu/admin/felhom-controller/internal/config"
	"gitea.dooplex.hu/admin/felhom-controller/internal/crypto"
	"gitea.dooplex.hu/admin/felhom-controller/internal/infra"
	"gitea.dooplex.hu/admin/felhom-controller/internal/integrations"
	"gitea.dooplex.hu/admin/felhom-controller/internal/mailrelay"
	"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/offsiteapply"
	"gitea.dooplex.hu/admin/felhom-controller/internal/quiesce"
	"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"
	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() {
	// Hidden re-exec mode (NAS verify-before-commit): the web server re-execs THIS binary as
	// `felhom-controller --netprobe <dir>` with uid/gid-1000 credentials to prove a media app can
	// write through a freshly-verified network share (SPIKE-nas-verify Q2). Handled before flag
	// parsing; the exit code is the probe verdict (see web/netprobe.go).
	if len(os.Args) == 3 && os.Args[1] == "--netprobe" {
		os.Exit(web.NetProbeChild(os.Args[2]))
	}

	configPath := flag.String("config", "/opt/docker/felhom-controller/controller.yaml", "Path to configuration file")
	showVersion := flag.Bool("version", false, "Show version and exit")
	printResetCode := flag.Bool("print-reset-code", false, "Customer-claim escape hatch (v0.122.0, F-4): print a fresh one-time local claim/reset code to stdout, then exit. Root-gated by reachability (docker exec). Same gate consumes it.")
	printInfraImages := flag.Bool("print-infra-images", false, "Print every controller-managed infra image (one per line) and exit. Read by the golden bake (felhom-agent configs/build-golden.sh) so the appliance image pre-pulls exactly what THIS controller version will request.")
	flag.Parse()

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

	// Config-free by design: the golden bake runs this against a bare `docker run` of the controller
	// image, where no controller.yaml, data dir or settings exist yet. It must never touch either.
	if *printInfraImages {
		for _, img := range infra.Images() {
			fmt.Println(img)
		}
		os.Exit(0)
	}

	if *printResetCode {
		cfg, err := config.LoadPermissive(*configPath)
		if err != nil {
			fmt.Fprintf(os.Stderr, "print-reset-code: loading config: %v\n", err)
			os.Exit(1)
		}
		sett, err := settings.Load(cfg.Paths.DataDir+"/settings.json", log.New(os.Stderr, "", 0))
		if err != nil {
			fmt.Fprintf(os.Stderr, "print-reset-code: loading settings: %v\n", err)
			os.Exit(1)
		}
		os.Exit(web.PrintLocalResetCode(sett, cfg))
	}

	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)
	// fix-6 (CAMPAIGN-3): load the pre-restart debug-ring window back immediately, so a controller
	// restart / container recreation no longer wipes the exact evidence an operator needs. The spill
	// lives on the SSD state dir (DataDir — holds settings.json, survives recreation), NEVER a NAS path.
	ringSpillPath := filepath.Join(cfg.Paths.DataDir, "debug-ring.log")
	logBuffer.LoadFrom(ringSpillPath)
	// v0.116.0: the debug ring is the controller_log_tail source (report self-tail channel).
	report.SetControllerLogSource(logBuffer.Lines)

	// --- Bootstrap ingestion (slice 8A → v0.40.0 onboarding, doc 03 §6) ---
	// On first run, if this controller is not yet configured AND the host agent's provisioning
	// back-half attached a bootstrap.json config mount, PULL the full controller.yaml from the hub
	// (using the bootstrap's retrieval passphrase), merge in the per-guest local_api block, and come
	// up CONFIGURED — skipping setup mode. Idempotent (never clobbers an existing controller.yaml)
	// and fail-safe (a malformed/absent bootstrap, or a hub outage at first boot, leaves us in setup
	// mode). The adapter marks a transient hub-unreachable error as retryable (the rest are permanent).
	pull := func(hubURL, customerID, retrievalPassword string) (string, error) {
		y, perr := report.PullConfig(hubURL, customerID, retrievalPassword)
		if perr != nil && errors.Is(perr, report.ErrHubUnreachable) {
			return "", fmt.Errorf("%w: %w", bootstrap.ErrPullTransient, perr)
		}
		return y, perr
	}
	cfg = bootstrap.MaybeIngest(*configPath, cfg, logger, pull)

	// --- 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
	}

	// --- Local API connectivity probe (slice 8A) ---
	// When seeded with a local-API endpoint, prove the controller↔agent channel at startup and
	// learn this guest's mounts (placement view). Non-fatal — the controller runs regardless; a
	// failure is logged for diagnosis. The full /backup/due quiesce loop lands in 8B.
	probeLocalAPI(cfg, logger)

	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()

	// --- First-boot base-infrastructure bring-up ---
	// We are guaranteed configured here (setup.NeedsSetup returned false above), so deploy the base
	// stack (traefik-public network → traefik → cloudflared → filebrowser) the controller needs for
	// routing + external access. Runs in a goroutine so a slow first-boot image pull never delays the
	// web server; non-fatal (idempotent + single-flight, the health loop re-attempts each tick).
	go func() {
		if err := stackMgr.EnsureBaseStack(); err != nil {
			logger.Printf("[WARN] [infra] first-boot base-stack bring-up: %v", err)
		}
	}()

	// --- 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()

	// --- Quiesce loop (slice 8B): app-consistent backup around the agent vzdump ---
	// Runs only when the local API is configured (a provisioned guest) and quiesce is enabled.
	// Recover FIRST (restart any stacks left stopped by a crash mid-quiesce), then start the loop.
	quiesceLoop := startQuiesceLoop(ctx, cfg, stackMgr, logger)

	// --- 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)")
	}

	// Deprecation notice for ping UUIDs (Healthchecks pinging retired — the Hub
	// now owns monitoring; disk-tier backup moved to the host agent in slice 8C).
	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 (app-data only: DB dumps + Docker-volume tars) ---
	var backupMgr *backup.Manager
	stackProv := &stackAdapter{
		mgr:             stackMgr,
		getStoragePaths: func() []settings.StoragePath { return sett.GetStoragePaths() },
		encKey:          encKey,
	}
	if cfg.Backup.Enabled {
		backupMgr = backup.NewManager(cfg, sett, logger)
		backupMgr.SetStackProvider(stackProv)
		backupMgr.SetVersion(Version)
		// O4: restore-from-unit generates a replacement for an unrecoverable RESETTABLE secret
		// (data-keys stay fail-closed) so the app redeploys with a fresh credential, not a blank one.
		backupMgr.SetSecretGenerator(stackMgr.GenerateSecretForField)
		// R-7b: after a shares restore re-adds definitions to the registry, smb.conf must be
		// re-rendered or the restored shares exist on paper but are not exported. A seam rather than a
		// direct call — the backup package must not depend on the stacks package.
		backupMgr.SetSharesReconciler(stackMgr.ReconcileSamba)
	}

	// SLICE 2: the offsite apply-bridge — on startup (async, non-blocking) reconcile the hub-served offsite
	// descriptor into a configured key-only offbox target (fail-safe, idempotent, no blind TOFU). The
	// config_refresh self-restart re-runs this after a descriptor change (new process → startup).
	if backupMgr != nil && cfg.Offsite.Enabled && cfg.Hub.URL != "" && cfg.Hub.APIKey != "" {
		bridge := &offsiteapply.Bridge{
			Cfg:       cfg,
			Consumer:  offsiteapply.HTTPConsumer{HubURL: cfg.Hub.URL, CustomerID: cfg.Customer.ID, APIKey: cfg.Hub.APIKey},
			Scanner:   offsiteapply.KeyscanScanner{},
			KeyGen:    offsiteapply.ED25519KeyGen{},
			Installer: offsiteapply.SSHCopyIDInstaller{},
			Prober:    offsiteapply.SFTPKeyAuthProber{KeyPath: filepath.Join(cfg.Paths.DataDir, "offbox", "ssh_key")},
			Enabler: offsiteapply.EnablerFunc(func(ctx context.Context, host, user string, port int, repoPath, priv, kh string, quotaGB int) error {
				tgt := &settings.OffboxTarget{Enabled: true, Host: host, User: user, Port: port, RepoPath: repoPath, Schedule: "daily", QuotaGB: quotaGB}
				stage := func(ctx context.Context, pw string) error {
					ac, err := agentapi.New(cfg.LocalAPI.Endpoint, cfg.LocalAPI.Token, cfg.LocalAPI.Fingerprint)
					if err != nil {
						return err
					}
					return ac.StageEscrowSecret(ctx, pw)
				}
				return backupMgr.ApplyOffsiteTarget(ctx, tgt, priv, kh, stage)
			}),
			MarkerPath: filepath.Join(cfg.Paths.DataDir, "offbox", "applied_marker"),
			Logger:     logger,
		}
		go func() {
			ctx, cancel := context.WithTimeout(context.Background(), 3*time.Minute)
			defer cancel()
			if err := bridge.Reconcile(ctx); err != nil {
				logger.Printf("[WARN] [offsite-apply] reconcile: %v (retries on next config refresh/restart)", err)
			}
		}()
	}

	// --- Wire the data-migration engine (B1) + backup↔migration mutual exclusion (Change 3) ---
	stackMgr.SetMigrationDeps(sett, func() bool { return backupMgr != nil && backupMgr.IsRunning() })
	if backupMgr != nil {
		backupMgr.SetMigrationRunningCheck(stackMgr.IsMigrating)
	}
	// RecoverMigration is started AFTER the web server's done-hook is wired (below), so a resumed
	// decommission-migration still finalizes the source decommission on completion.

	// --- 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 the app-email SMTP shim (mailrelay) ---
	// In-process shim: apps → shim → hub → Resend (the Resend key stays hub-side). It runs only
	// when the controller has a hub (URL+key) AND the operational kill-switch is on; the runtime
	// global app-email toggle then decides whether it actually listens (Lifecycle.Apply). Listeners
	// bind to the app Docker network only — never published to the host/internet.
	var mailShim *mailrelay.Lifecycle
	if cfg.Hub.URL != "" && cfg.Hub.APIKey != "" && cfg.MailRelay.HardEnabled() {
		mailShim = mailrelay.NewLifecycle(mailrelay.Options{
			PlainAddr:      cfg.MailRelay.PlainListen,
			TLSAddr:        cfg.MailRelay.TLSListen,
			PlainNoTLSAddr: cfg.MailRelay.PlainNoTLSListen,
			ServiceName:    cfg.MailRelay.ShimHost,
			Policy:         mailrelay.NewPolicy(cfg.MailRelay.FromDomains),
			Forwarder:      mailrelay.NewHubForwarder(cfg.Hub.URL, cfg.Hub.APIKey),
			Logger:         logger,
		})
		if err := mailShim.Apply(sett.AppEmailEnabled()); err != nil {
			logger.Printf("[ERROR] [mailrelay] could not start app-email shim: %v", err)
		}
	} else {
		logger.Printf("[INFO] [mailrelay] app-email shim unavailable (no hub configured or disabled in config)")
	}

	// --- Initialize self-updater ---
	var updater *selfupdate.Updater
	if cfg.SelfUpdate.Enabled {
		// Phase 1: the host agent performs the container swap. Build a (nil-able) agent client from the
		// provisioned local-API config; when absent (un-provisioned guest) self-update is unavailable.
		var swapAgent selfupdate.AgentSwapper
		if cfg.LocalAPI.Endpoint != "" && cfg.LocalAPI.Token != "" {
			if ac, err := agentapi.New(cfg.LocalAPI.Endpoint, cfg.LocalAPI.Token, cfg.LocalAPI.Fingerprint); err != nil {
				logger.Printf("[WARN] Self-update: agent client init failed (%v) — updates unavailable", err)
			} else {
				swapAgent = ac
			}
		}
		updater = selfupdate.NewUpdater(&cfg.SelfUpdate, &cfg.Git, Version, cfg.Paths.DataDir, swapAgent, 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)
	// F7: 30s left the dashboard list lagging Docker health by up to ~30s after a deploy/state change.
	// 10s (matching the health-probes cadence) tightens it; RefreshStatus is a cheap `docker ps`-based
	// refresh of the in-memory map, so 10s does not meaningfully load Docker. (The deploy page itself
	// already polls per-stack every 3s; this is for the dashboard/stacks list.)
	sched.Every("status-refresh", 10*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()
	})

	// System health check — refreshes dashboard alerts and notifies on changes.
	// Healthchecks.io pinging has been retired (the Hub now owns monitoring).
	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(), sett.GetSMBSettings(), logger)
		// Self-heal the base stack: call unconditionally every tick. EnsureBaseStack is single-flight
		// + idempotent (skips running stacks ⇒ a cheap 3× docker-inspect no-op when healthy), so there
		// is no need to couple to the health-report issue strings. Runs in a goroutine — never blocks
		// or fails the health job.
		go func() {
			if err := stackMgr.EnsureBaseStack(); err != nil {
				logger.Printf("[WARN] [infra] self-heal base-stack bring-up: %v", err)
			}
		}()
		// 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
	})

	// fix-3 (CAMPAIGN-3): a deployed app that is not running must be LOUD, not silent (the campaign's
	// CWA sat dead 4 h; F11 then produced 4 silently-dead NAS apps per reboot). Runs on its own short
	// cadence (faster than the 5-min health cycle) so a dead app surfaces quickly. Logs nothing on the
	// quiet path (no ring spam — fix-6 friendly); the dashboard banner is state-based (self-clears) and
	// the hub event fires once per running→down transition (notifier tracks it). A boot grace skips the
	// controller's own startup settle so apps that legitimately take 30–60 s to come up don't alert.
	sched.Every("deadapp-check", 30*time.Second, func(ctx context.Context) error {
		if time.Since(startTime) < deadAppBootGrace {
			return nil // still inside the startup settle window
		}
		dead, states := scanDeployedAppRunStates(stackMgr)
		alertMgr.SetDeadAppAlerts(dead)
		notifier.NotifyAppStartFailures(states)
		return nil
	})

	// fix-6 (CAMPAIGN-3): periodically spill the debug ring to the SSD state dir so a HARD crash loses
	// at most ~60 s of the window (a clean shutdown spills too). ≤30s interval → auto-quiet (no
	// per-cycle scheduler line). SpillTo is atomic (tmp+rename) so it can never corrupt the ring file.
	sched.Every("ring-spill", 30*time.Second, func(ctx context.Context) error {
		return logBuffer.SpillTo(ringSpillPath)
	})

	// --- Central hub pusher (declared early so backup closure can reference it) ---
	var hubPusher *report.Pusher
	// escrowConfirmer is hoisted so the web server (built later) can read its Scenario-F
	// stale-blob flag (SetEscrowStale below). nil when no hub is configured.
	var escrowConfirmer *report.EscrowAutoConfirmer
	if cfg.Hub.URL != "" && cfg.Hub.APIKey != "" {
		hubPusher = report.NewPusher(&cfg.Hub, logger, cfg.Logging.Level == "debug")
		// SLICE 3 — hub-verified escrow auto-confirm (long-lived: the mismatch warn dedupes per hash,
		// not per 15-min cycle). Flips offbox pending→escrowed ONLY when the hub-recorded hash of the
		// escrowed password matches the local repo password's hash; never un-confirms. v0.127.0 adds
		// the escrowed-state STALE re-check (Scenario F — warn + card flag, never a state change).
		escrowConfirmer = &report.EscrowAutoConfirmer{
			Pending: func() bool {
				return backupMgr != nil && backupMgr.OffboxConfigured() &&
					sett.GetOffboxTarget() != nil && sett.GetOffboxTarget().EscrowState == "pending"
			},
			Escrowed: func() bool {
				return backupMgr != nil && backupMgr.OffboxConfigured() &&
					sett.GetOffboxTarget() != nil && sett.GetOffboxTarget().EscrowState == "escrowed"
			},
			LocalHash: func() (string, bool) {
				if backupMgr == nil {
					return "", false
				}
				return backupMgr.OffboxRepoPasswordHash()
			},
			Flip: func() error {
				return sett.UpdateOffboxStatus(func(o *settings.OffboxTarget) {
					o.EscrowState = "escrowed"
					o.CeremonyCompletedAt = "" // v0.138.0: clear the awaiting-card stamp on confirm
				})
			},
			Wipe: func(ctx context.Context) error {
				ac, err := agentapi.New(cfg.LocalAPI.Endpoint, cfg.LocalAPI.Token, cfg.LocalAPI.Fingerprint)
				if err != nil {
					return err
				}
				return ac.WipeStagedEscrowSecret(ctx)
			},
			Logger: logger,
		}
		// 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())
			}
			// Phase 2 managed updates: the ACK carries the operator-enforced minimum version (FLOOR).
			// Hand it to the updater and reconcile — if the box is below the floor it auto-updates to
			// the floor (reusing the Phase 1 swap). This rides the existing report cycle; no new timer.
			// latest_version stays informational (the customer's opt-in button), NOT the auto-target.
			if updater != nil {
				updater.SetFloor(resp.MinControllerVersion)
				updater.MaybeAutoUpdate()
			}
			// Config-refresh (v0.26.0): the ACK also carries the per-customer config_version. On a
			// change vs. the last-applied version, re-pull controller.yaml (re-merging local_api from
			// bootstrap.json) and self-restart so the new config loads. Pull-based — the hub never
			// connects into the box. Rides this same report cycle; no new timer, no agent. First-ever
			// ACK records the baseline without restarting; a failed pull keeps the current config and
			// retries next cycle; an unchanged version is a no-op (so no restart storm).
			cr := &report.ConfigRefresher{
				Applied: sett.GetAppliedConfigVersion,
				Record:  sett.SetAppliedConfigVersion,
				Refresh: func() error { return bootstrap.RefreshConfig(*configPath, logger, pull) },
				Restart: func() { api.GracefulSelfRestart(logger) },
				Logger:  logger,
			}
			cr.Reconcile(resp.ConfigVersion)
			// SLICE 3: run the escrow auto-confirm on the same ACK (after the config refresh decision —
			// a refresh-restart re-enters here anyway on the next cycle).
			escrowConfirmer.Reconcile(resp.Escrow)
			// v0.111.0: operator log-tail requests ride the same ACK (pull pattern — the hub
			// never reaches in). The NEXT report cycle collects + ships the tails; the hub
			// clears its pending request on receipt. An empty list clears any stale local set.
			report.SetPendingLogTails(resp.LogTailRequests)
			// v0.116.0: the controller's OWN ring, same pattern (selftail.go).
			report.SetPendingControllerLog(resp.ControllerLogRequested)
			// v0.122.0 (F-4): cache the hub-delivered claim-code state (idempotent by
			// generation). The web gate reads it on the next request — no restart needed.
			claimSync := &report.ClaimSync{Settings: sett, Logger: logger}
			claimSync.Reconcile(resp.Claim)
		}
		// 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 {
		// App-data backup: daily database dumps. Disk-tier (restic snapshots,
		// cross-drive, integrity check, infra backup) has moved to the host agent.
		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
		})

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

		// Tier 2: off-drive copy of each HDD app's recovery unit + userdata (auto-enabled, auto-target).
		// Runs after the DB dump so it copies a fresh unit.
		backupMgr.SetTier2Notifier(func(stackName, destLabel string, dur time.Duration, err error) {
			// DISPLAY BOUNDARY (R-7b): this event's StackName lands in Hungarian operator/customer copy
			// ("Másodlagos mentés elkészült: <név>"), so the reserved shares key is mapped here. Caught
			// by live validation — the first demo run pushed a literal "_shares" before this line.
			display := backup.DisplayStackName(stackName)
			if err != nil {
				notifier.NotifyCrossDriveFailed(notify.CrossDriveDetails{
					StackName: display, Method: "rsync", DestPath: destLabel,
					Duration: dur.Round(time.Second).String(), Error: err.Error(),
				})
			} else {
				notifier.NotifyCrossDriveCompleted(notify.CrossDriveDetails{
					StackName: display, Method: "rsync", DestPath: destLabel,
					Duration: dur.Round(time.Second).String(),
				})
			}
		})
		sched.Daily("tier2-backup", "03:30", func(ctx context.Context) error {
			backupMgr.RunAllTier2()
			return nil
		})

		// Off-box (NAS) restic-SFTP backup (Part B): the off-site leg. A failure (incl. a fail-fast dead-NAS
		// error) alerts the operator via the allowlisted backup_failed event. Daily after Tier 2.
		backupMgr.SetOffboxNotify(func(dur time.Duration, snapshots int, err error) {
			if err != nil {
				notifier.NotifyBackupFailed("Off-box (NAS) mentés sikertelen",
					"a NAS-ra mentés hibázott ("+dur.Round(time.Second).String()+"): "+err.Error())
			}
		})
		// 3a: the pre-push enlargement gate blocked an app's userdata push (config+DB still saved). Edge-
		// triggered by the engine (only NEW blocks notify), so the hub's per-event-type cooldown suffices —
		// no controller-side timer (the hub owns cooldown).
		backupMgr.SetOffboxEnlargeBlockedNotifier(func(stack string, estBytes int64, usedGB, quotaGB int) {
			notifier.NotifyOffboxEnlargeBlocked(fmt.Sprintf(
				"A(z) %s teljes távoli mentése (~%s) túllépné a tárhelykeretet (%d/%d GB). A konfiguráció és az adatbázis továbbra is mentésre kerül; nagyobb kerethez vedd fel velünk a kapcsolatot.",
				stack, appbackup.HumanizeBytes(estBytes), usedGB, quotaGB))
		})
		// v0.142.0 offsite-repo continuity: push a hub event on the orphaned/reset transitions (once per
		// transition — the Manager guards nightly re-fire). Operator-visible on the customer page.
		backupMgr.SetOffboxOrphanEvent(func(eventType, renamedTo string) {
			switch eventType {
			case "offbox_repo_orphaned":
				notifier.PushEvent("offbox_repo_orphaned", "warning",
					"A távoli mentési tároló elárvult: a benne lévő mentések egy korábbi, már nem elérhető kulccsal készültek (újratelepítés). Új mentés a tároló visszaállításáig nem készül.", nil)
			case "offbox_repo_reset":
				notifier.PushEvent("offbox_repo_reset", "info",
					"A távoli mentési tároló visszaállítva: a régi előzmény félretéve (nem törölve), és egy üres, új tároló jött létre a mostani kulccsal.", map[string]string{"renamed_to": renamedTo})
			}
		})
		sched.Daily("offbox-backup", "04:15", func(ctx context.Context) error {
			t := sett.GetOffboxTarget()
			if t == nil || !t.Enabled || t.Schedule != "daily" || !backupMgr.OffboxConfigured() {
				return nil // not configured / not scheduled
			}
			return backupMgr.RunOffboxBackup(ctx)
		})
	}

	// 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(), sett.GetSMBSettings(), logger)
				r.Claimed = sett.GetClaimed() // v0.122.0 (F-4): set-only claim flag for the hub
				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 (disk disconnect/reconnect detection) has moved to the host
	// agent (slice 8C) — the controller no longer owns disk-level monitoring.

	// --- 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,
		})

		// Hub report
		if hubPusher != nil {
			if cfg.Hub.Enabled {
				r := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), sett.GetSMBSettings(), logger)
				r.Claimed = sett.GetClaimed() // v0.122.0 (F-4): set-only claim flag for the hub
				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)
				}
			} 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)
			backupMgr.RefreshCache(nextDBDump)
		}()
	}

	// 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(), sett.GetSMBSettings(), logger)
		alertMgr.Refresh(report, cfg, backupMgr, false, "")
	}()

	// --- Out-of-cycle report trigger (v0.139.0, Direction 1) ---
	// ONE canonical fire closure (full BuildReport + Claimed + Push) behind a debounced,
	// coalescing trigger — user actions with hub-side effects (geo, escrow claim, settings
	// save, offsite toggle, app deploy/remove, customer claim) round-trip in seconds instead
	// of the next ~15-min cycle. The scheduled hub-report job above stays the reconciliation
	// backbone; the trigger is best-effort on top (its failures degrade to the cycle).
	// nil when hub reporting is off → the api/web seams stay unset (strict no-op).
	var reportTrigger *report.Trigger
	if hubPusher != nil && cfg.Hub.Enabled {
		fireReport := func() error {
			rep := report.BuildReport(cfg, *configPath, stackMgr, backupMgr, cpuCollector, metricsStore, Version, sett.GetStoragePaths(), sett.GetGeoRestriction(), sett.GetSMBSettings(), logger)
			rep.Claimed = sett.GetClaimed() // v0.122.0 (F-4): set-only claim flag for the hub
			return hubPusher.Push(rep)
		}
		reportTrigger = report.NewTrigger(fireReport, logger)
		go reportTrigger.Run(ctx)

		// Direction-2 immediate-sync (v0.140.0): hold a hanging GET against the hub's wait channel
		// and fire the trigger the instant operator intent moves — so an operator save round-trips in
		// seconds instead of on the next ~15-min cycle. Reuses the SAME hub URL + key as the pusher;
		// no new config keys. Gated on the trigger existing (hub reporting enabled). The ACK from the
		// fired report delivers everything through the unchanged machinery.
		waiter := report.NewWaiter(cfg.Hub.URL, cfg.Hub.APIKey, reportTrigger.Fire, logger)
		go waiter.Run(ctx)
	}

	// --- Initialize API router ---
	apiRouter := api.NewRouter(cfg, *configPath, sett, stackMgr, syncer, cpuCollector, backupMgr, metricsStore, updater, notifier, logger)
	if reportTrigger != nil {
		// Out-of-cycle, non-blocking hub report push (geo changes + app deploy/remove) so
		// the hub reflects the new state immediately instead of after the next ~15-min cycle.
		apiRouter.SetReportPushTrigger(reportTrigger.Fire)
	}
	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, sched, sett, alertMgr, notifier, updater, logger, Version)
	// Migration done-hook: a decommission-initiated migration finalizes the source decommission on
	// success (soft-mark + agent). Wire it before RecoverMigration so a resumed one still finalizes.
	stackMgr.SetMigrationDoneHook(webServer.OnMigrationDone)
	stackMgr.RecoverMigration(ctx)
	webServer.SetEncryptionKey(encKey)
	webServer.SetAppExporter(appExporter)
	// Browser .fab upload (v0.128.0): upload state is in-memory, so a restart strands the .part —
	// GC stray part files in every registered drive's exports dir at startup.
	webServer.CleanupStaleUploadParts()
	// Escrow wizard (v0.127.0): the Scenario-F stale-blob flag feeds the Távoli mentés card.
	if escrowConfirmer != nil {
		webServer.SetEscrowStale(escrowConfirmer.StaleBlob)
	}
	webServer.SetIntegrationManager(integrationMgr)
	if reportTrigger != nil {
		// Out-of-cycle report push after hub-relevant user actions (escrow claim, settings
		// save, offsite config/toggle, customer claim) — same debounced trigger as the api
		// router's; nil (hub reporting off) leaves the seam a strict no-op.
		webServer.SetReportTrigger(reportTrigger.Fire)
	}
	if quiesceLoop != nil {
		webServer.SetBackupTrigger(quiesceLoop) // "Mentés most" → app-consistent backup via the quiesce loop
	}
	if mailShim != nil {
		webServer.SetMailShim(mailShim) // settings toggle starts/stops the app-email shim at runtime
	}
	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)

	// Controller→agent channel health (self-health slice). A ~60s probe of the local-API channel via
	// the PRODUCTION memoized client (webServer.ProbeAgentChannel), classified + debounced, alerting the
	// operator + dashboard on a transition. Only on a provisioned guest (endpoint set) — mirrors
	// probeLocalAPI's guard. Registered after webServer (it owns the memoized client); sched.Every
	// launches the job immediately since the scheduler is already started.
	if cfg.LocalAPI.Endpoint != "" {
		chSink := channelSink{notifier: notifier, alertMgr: alertMgr}
		chChecker := channelhealth.New(webServer.ProbeAgentChannel, chSink, logger)
		sched.Every("agent-channel-health", 60*time.Second, chChecker.Check)
	}

	// 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(), sett.GetSMBSettings(), logger)
				r.Claimed = sett.GetClaimed() // v0.122.0 (F-4): set-only claim flag for the hub
				return hubPusher.Push(r)
			}
		}
		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)
	}

	// Drive migration (full-drive move) has moved to the host agent (slice 8C);
	// the controller no longer runs a DriveMigrator.

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

	// API routes (no auth for health endpoint, auth for everything else)
	mux.HandleFunc("/api/health", apiRouter.HealthHandler)
	// Disk management API — thin proxy to the host agent (slice 8C). The agent owns
	// disk execution; the controller forwards list/assign/eject/format.
	mux.Handle("/api/disks", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeDiskAPI))))
	mux.Handle("/api/disks/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeDiskAPI))))
	// Guided storage provisioning (init/attach/eject orchestration over the agent disk API + registry).
	mux.Handle("/api/storage/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeStorageAPI))))
	// LAN network-sharing folder picker (R-7 slice 1). Must live here, not in the web ServeHTTP
	// switch: the /api/ subtree is routed on this mux, so a case there is shadowed and 401s.
	mux.Handle("/api/sharing/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeSharingAPI))))
	// Guest RAM resize (v0.143.0, R-24): read current allocation/bounds + apply a bounded resize.
	mux.Handle("/api/system/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeSystemAPI))))
	// Standalone full-server (guest) restart — the "Kiszolgáló újraindítása" maintenance affordance,
	// a sibling to the controller-only /api/selfrestart. Reuses the agent GuestReboot primitive.
	mux.Handle("/api/server/reboot", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.HandleServerReboot))))
	// Whole-guest (appliance) backup visibility + manual trigger. Distinct prefix from apiRouter's
	// app-data /api/backup/{run,status} (DB dumps) to avoid shadowing the /api/ catch-all subtree.
	mux.Handle("/api/guest-backup/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeBackupAPI))))
	// Host metrics API — thin proxy to the host agent (slice 9). Read-only host-wide health +
	// per-storage capacity for the monitoring view; the de-privileged controller can't read the
	// host itself. GET only, so no CSRF wrapper needed.
	mux.Handle("/api/host-metrics", webServer.RequireAuth(http.HandlerFunc(webServer.ServeHostMetricsAPI)))
	// 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))))
	// Escrow ceremony wizard API (v0.127.0) — session auth + CSRF on POSTs; the claim response is
	// the ONLY surface the recovery code R ever crosses (no-store, never logged).
	mux.Handle("/api/escrow/", webServer.RequireAuth(webServer.CsrfProtect(http.HandlerFunc(webServer.ServeEscrowAPI))))
	// 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)
		// fix-6: spill the debug ring on a clean shutdown so a `systemctl restart` / container recreate
		// preserves the pre-restart window (the periodic spill already covers a hard crash to ≤60 s).
		if err := logBuffer.SpillTo(ringSpillPath); err != nil {
			logger.Printf("[WARN] debug-ring spill on shutdown failed: %v", err)
		}
		cancel()
		if mailShim != nil {
			mailShim.Close()
		}

		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).
// deadAppBootGrace is the startup settle window before fix-3 evaluates deployed-app run states — apps
// legitimately take 30–60 s to come up, so a shorter grace would false-alarm during the controller's
// own boot. After the grace, an app that still isn't running alerts (the F11 dead-at-boot case).
const deadAppBootGrace = 90 * time.Second

// scanDeployedAppRunStates returns the fix-3 view of the deployed apps: the DEAD ones (for the
// state-based dashboard banner) and EVERY deployed app's run state (for the notifier's one-event-per-
// transition tracking). Deploying apps are skipped (mid-deploy is not a fault). Pure over GetStacks().
func scanDeployedAppRunStates(mgr *stacks.Manager) ([]web.DeadApp, []notify.AppRunState) {
	var dead []web.DeadApp
	var states []notify.AppRunState
	for _, st := range mgr.GetStacks() {
		if !st.Deployed || st.Deploying {
			continue
		}
		down := stacks.IsDownState(st.State)
		states = append(states, notify.AppRunState{Name: st.Name, DisplayName: st.Meta.DisplayName, Down: down})
		if down {
			dead = append(dead, web.DeadApp{Name: st.Name, DisplayName: st.Meta.DisplayName, State: string(st.State)})
		}
	}
	return dead, states
}

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)
	})
}

// setupLogger builds the v0.116.0 capture layer: the LogBuffer ring ALWAYS exists
// and captures every line (DEBUG included — remote diagnostics need the detail to
// exist without a config flip), while stdout (docker logs) keeps respecting
// logging.level via the level filter. Lshortfile stays debug-only (unchanged).
func setupLogger(cfg *config.Config) (*log.Logger, *web.LogBuffer) {
	// fix-6 (CAMPAIGN-3): 1000 wrapped in ~6.5 min under the campaign's ~2.6 entries/s load — the exact
	// post-incident window an operator needs was the first thing lost. 5000 gives ≈32 min at that raw
	// rate, and ≈50+ min now that the periodic-scheduler TRACE noise no longer enters the ring (2b).
	logBuffer := web.NewLogBuffer(5000)
	flags := log.LstdFlags
	if cfg.Logging.Level == "debug" {
		flags |= log.Lshortfile
	}
	stdout := web.NewLevelFilterWriter(os.Stdout, cfg.Logging.Level)
	return log.New(io.MultiWriter(stdout, logBuffer), "", flags), logBuffer
}

// stackAdapter implements backup.StackDataProvider using stacks.Manager.
type stackAdapter struct {
	mgr             *stacks.Manager
	getStoragePaths func() []settings.StoragePath
	encKey          []byte // for decrypting live app.yaml secrets during restore-from-unit
}

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

// GetStackClassifiedBinds delegates to the stacks manager's backup-classification resolver (Task 2).
// INERT — no backup tier calls this yet; wired so Task 3 consumes a tested seam.
func (a *stackAdapter) GetStackClassifiedBinds(name string) ([]backup.ClassifiedBind, bool) {
	return a.mgr.ClassifiedBinds(name)
}

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 ""
}

// GetStackRecoveryInfo gathers the SECRET-FREE inputs for an app's recovery unit (Phase 2): the
// stack dir, pinned image tags, the non-secret env, and the NAMES of secret/data-key env vars.
// It deliberately does NOT decrypt or return any secret value — secret/password fields are stored
// encrypted in app.yaml, so excluding them (plus a defensive crypto.IsEncrypted guard) yields a
// plaintext, secret-free env. The actual secret values are recovered at restore time from the
// guest's own app.yaml (live, or via the PBS whole-guest snapshot), never from the unit.
func (a *stackAdapter) GetStackRecoveryInfo(name string) (backup.RecoveryInfo, bool) {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return backup.RecoveryInfo{}, false
	}
	stackDir := filepath.Dir(s.ComposePath)
	meta := stacks.LoadMetadata(stackDir)

	// Secret set = all secret/password fields ∪ any data_key fields (in deterministic metadata order).
	secretSet := make(map[string]bool)
	var secretNames []string
	add := func(v string) {
		if !secretSet[v] {
			secretSet[v] = true
			secretNames = append(secretNames, v)
		}
	}
	for _, v := range stacks.SensitiveEnvVars(&meta) {
		add(v)
	}
	dataKeys := meta.DataKeyEnvVars()
	for _, v := range dataKeys {
		add(v)
	}

	// Non-secret env: raw app.yaml values that are neither named-secret nor (defensively) encrypted.
	nonSecret := make(map[string]string)
	if appCfg := stacks.LoadAppConfig(stackDir); appCfg != nil {
		for k, v := range appCfg.Env {
			if secretSet[k] || crypto.IsEncrypted(v) {
				continue
			}
			nonSecret[k] = v
		}
	}

	return backup.RecoveryInfo{
		StackDir:       stackDir,
		DisplayName:    s.Meta.DisplayName,
		ImagePins:      backup.ParseComposeImages(s.ComposePath),
		NonSecretEnv:   nonSecret,
		SecretEnvVars:  secretNames,
		DataKeyEnvVars: dataKeys,
	}, true
}

// RecoverStackSecrets returns the live decrypted values for the named secret env vars present in the
// stack's app.yaml (the guest's own — live rootfs or PBS-restored). Absent/empty names are omitted;
// the caller's fail-closed gate decides. Secrets come from the guest, never from the recovery unit.
func (a *stackAdapter) RecoverStackSecrets(name string, names []string) map[string]string {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return nil
	}
	cfg := stacks.LoadAppConfigDecrypted(filepath.Dir(s.ComposePath), a.encKey)
	if cfg == nil {
		return nil
	}
	out := make(map[string]string)
	for _, n := range names {
		if v, ok := cfg.Env[n]; ok && v != "" {
			out[n] = v
		}
	}
	return out
}

// RecreateStackFromUnit restores the app definition from the unit's compose dir into the stack dir,
// then redeploys with the reconstructed full env (re-pulling the pinned image). Secrets in fullEnv were
// recovered from the guest, never regenerated.
func (a *stackAdapter) RecreateStackFromUnit(name, composeSrcDir string, fullEnv map[string]string) error {
	s, ok := a.mgr.GetStack(name)
	if !ok {
		return fmt.Errorf("stack %q not found", name)
	}
	stackDir := filepath.Dir(s.ComposePath)
	// Recover the app definition from the unit (compose + .felhom.yml) into the stack dir.
	for _, fname := range []string{"docker-compose.yml", ".felhom.yml"} {
		data, err := os.ReadFile(filepath.Join(composeSrcDir, fname))
		if err != nil {
			continue // capture whichever existed
		}
		if err := os.WriteFile(filepath.Join(stackDir, fname), data, 0644); err != nil {
			return fmt.Errorf("restoring %s from unit: %w", fname, err)
		}
	}
	return a.mgr.RedeployFromEnv(name, fullEnv)
}

// RefreshAndIsRunning forces a docker ps scan before checking state.
// Called during post-restore health check (~every 5s for up to 90s).
// Full refresh is acceptable here since restores are rare operations.
func (a *stackAdapter) RefreshAndIsRunning(name string) bool {
	a.mgr.RefreshStatus()
	s, ok := a.mgr.GetStack(name)
	return ok && s.State == stacks.StateRunning
}

// 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
}

// 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
}

// GetStackClassifiedBinds delegates to the stacks manager's backup-classification resolver (Task 2),
// used by the `.fab` class-scoped export plan (Task 4).
func (a *exportAdapter) GetStackClassifiedBinds(name string) ([]appbackup.ClassifiedBind, bool) {
	return a.mgr.ClassifiedBinds(name)
}

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"] != "" {
		// C6B-F1 (v0.130.0): union ${HDD_PATH} binds + the ${USERDATA_PATH} root. The old
		// ParseComposeHDDMounts-only call was blind to the standard userdata convention, so
		// 12/13 needs_hdd catalog apps exported hollow (config-only) bundles. The backup-side
		// stackAdapter is intentionally NOT changed here — the scheduled/tier-2 path copies the
		// recovery unit + the app's resolved appdata/<name> dir(s) only (NOT the userdata tree —
		// F-S1; NOT the namespace wholesale), and derives that dir name from the compose binds
		// (F-S2, see backup.tier2AppDataName). Spec:
		// felhom.eu/documentation/audits/SPIKE-backup-classification-2026-07-14.md.
		return stacks.ExportDataMounts(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
}

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

// quiesceBackend adapts *agentapi.Client to quiesce.Backend (bool/string, decoupled from the
// agentapi response structs).
type quiesceBackend struct{ c *agentapi.Client }

func (b quiesceBackend) Due(ctx context.Context) (bool, error) {
	r, err := b.c.BackupDue(ctx)
	return r.Due, err
}
func (b quiesceBackend) StartBackup(ctx context.Context) (string, error) {
	r, err := b.c.StartBackup(ctx)
	return r.JobID, err
}
func (b quiesceBackend) BackupStatus(ctx context.Context) (string, error) {
	r, err := b.c.BackupStatus(ctx)
	return r.Phase, err
}

// startQuiesceLoop wires + starts the slice-8B quiesce loop when the local API is configured and
// quiesce is enabled. It Recovers (restarts stacks left stopped by a mid-quiesce crash) before
// starting the loop goroutine. Non-fatal: any misconfig disables the loop with a log line.
func startQuiesceLoop(ctx context.Context, cfg *config.Config, stackMgr *stacks.Manager, logger *log.Logger) *quiesce.Loop {
	if cfg.LocalAPI.Endpoint == "" || cfg.LocalAPI.Token == "" {
		return nil // not a provisioned guest — no agent to back up against
	}
	if !cfg.Quiesce.QuiesceEnabled() {
		logger.Printf("[INFO] [quiesce] disabled by config")
		return nil
	}
	client, err := agentapi.New(cfg.LocalAPI.Endpoint, cfg.LocalAPI.Token, cfg.LocalAPI.Fingerprint)
	if err != nil {
		logger.Printf("[WARN] [quiesce] disabled (agent client init failed): %v", err)
		return nil
	}
	poll := parseDurationOr(cfg.Quiesce.PollInterval, 5*time.Minute)
	statusPoll := parseDurationOr(cfg.Quiesce.StatusPoll, 10*time.Second)
	maxQuiesce := parseDurationOr(cfg.Quiesce.MaxQuiesce, 30*time.Minute)
	loop := quiesce.New(quiesce.Options{
		Backend:    quiesceBackend{c: client},
		Stacks:     stackMgr,
		MarkerPath: filepath.Join(cfg.Paths.DataDir, "quiesce-state.json"),
		Poll:       poll,
		StatusPoll: statusPoll,
		MaxQuiesce: maxQuiesce,
		Logger:     logger,
	})
	loop.Recover() // crash-safety: restart any stacks stranded-down by a mid-quiesce crash
	go loop.Run(ctx)
	return loop
}

// parseDurationOr parses a duration string, falling back to def on empty/invalid input.
func parseDurationOr(s string, def time.Duration) time.Duration {
	if s == "" {
		return def
	}
	d, err := time.ParseDuration(s)
	if err != nil || d <= 0 {
		return def
	}
	return d
}

// channelSink adapts the notify.Notifier + web.AlertManager to the channelhealth.Sink seam (kept in
// main.go so the channelhealth package imports neither — no cycle). SetDashboard reflects the current
// state each probe (idempotent); NotifyDown/NotifyRecovered fire only on a transition.
type channelSink struct {
	notifier *notify.Notifier
	alertMgr *web.AlertManager
}

func (s channelSink) SetDashboard(down bool, _ channelhealth.Reason, msg string) {
	s.alertMgr.SetAgentChannelAlert(down, msg)
}
func (s channelSink) NotifyDown(reason channelhealth.Reason, eventType, severity, msg string) {
	s.notifier.NotifyAgentChannelDown(string(reason), eventType, severity, msg)
}
func (s channelSink) NotifyRecovered() { s.notifier.NotifyAgentChannelRecovered() }

// probeLocalAPI proves the controller↔agent local-API channel at startup and logs this guest's
// mounts (slice 8A). Non-fatal: it only runs when a local-API endpoint is configured, and any
// error is logged for diagnosis without affecting the controller's boot. The leaf SHA-256 from
// the bootstrap is pinned by the client (fails closed on mismatch).
func probeLocalAPI(cfg *config.Config, logger *log.Logger) {
	if cfg.LocalAPI.Endpoint == "" || cfg.LocalAPI.Token == "" {
		return
	}
	client, err := agentapi.New(cfg.LocalAPI.Endpoint, cfg.LocalAPI.Token, cfg.LocalAPI.Fingerprint)
	if err != nil {
		logger.Printf("[WARN] local-api: client init failed (%v) — channel not verified", err)
		return
	}
	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
	defer cancel()
	resp, err := client.Storage(ctx)
	if err != nil {
		logger.Printf("[WARN] local-api: GET /storage failed (%v) — channel not verified", err)
		return
	}
	logger.Printf("[INFO] local-api: channel up (agent %s) — guest %d, %d mount(s) visible",
		cfg.LocalAPI.Endpoint, resp.VMID, len(resp.Mounts))
	for _, m := range resp.Mounts {
		logger.Printf("[INFO] local-api: mount %s → %s (storage=%s, class=%s, backup=%v)",
			m.Key, m.MountPoint, m.Storage, m.Class, m.Backup)
	}
}

// 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")
}

// 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
}