package backup

import (
	"context"

	"fmt"
	"gitea.dooplex.hu/admin/felhom-controller/internal/appbackup"
	"io"
	"log"
	"strings"
	"testing"
	"time"
)

// R-479 (operator ruling 2026-09-13) — for an app whose data is bind-mounted files, the tiers are
// walked second drive → off-site → own unit, and the hold sentence says what the chosen copy holds.

func r479Manager(t *testing.T, bindApp bool) *Manager {
	t.Helper()
	m, _ := newOffboxManager(t)
	prov := &offbox3aProvider{hdd: map[string]string{}, binds: map[string][]ClassifiedBind{}, has: map[string]bool{}, deployed: map[string]bool{"app": true}}
	if bindApp {
		prov.hdd["app"] = t.TempDir()
		prov.binds["app"] = []ClassifiedBind{{ComposeBind: appbackup.ComposeBind{RelPath: "appdata/app"}, Class: ClassMandatory}}
		prov.has["app"] = true
	}
	m.SetStackProvider(prov)
	return m
}

// COMPANION RED-PROOF (REPORT.md): make UpdateTierOrderFor always return updateTierOrder — the
// bind-app case then picks the own unit ahead of off-site and this fails.
func TestR479_BindDataAppWalksSecondDriveOffsiteThenOwnUnit(t *testing.T) {
	for _, tc := range []struct {
		bind bool
		want string
	}{{true, "[2 3 1]"}, {false, "[2 1 3]"}} {
		m := r479Manager(t, tc.bind)
		if got := fmt.Sprint(m.UpdateTierOrderFor("app")); got != tc.want {
			t.Errorf("bind=%v: order %s, want %s", tc.bind, got, tc.want)
		}
		if m.DataOutsideUnit("app") != tc.bind {
			t.Errorf("bind=%v: DataOutsideUnit must follow the classified binds", tc.bind)
		}
	}
	// The consequence, not only the mechanism: with Tier 2 absent and BOTH the unit and off-site
	// holding a copy, a bind-data app leans on OFF-SITE; a unit app on its own unit.
	for _, tc := range []struct {
		bind bool
		want int
	}{{true, UpdateTierOffsite}, {false, UpdateTierLocal}} {
		m := r479Manager(t, tc.bind)
		m.updateTier2PointFn = noTier2
		m.updateTier1PointsFn = tier1At(r475T0.Add(-time.Hour))
		m.updateOffsiteTimesFn = func(context.Context) (map[string]time.Time, error) {
			return map[string]time.Time{"app": r475T0.Add(-2 * time.Hour)}, nil
		}
		p, ok, _ := m.UpdateRestorePoints(context.Background(), "app", nil)
		if !ok || p.Tier != tc.want {
			t.Errorf("bind=%v: chose tier %d, want %d", tc.bind, p.Tier, tc.want)
		}
	}
}

func TestR479_HoldSentenceNamesWhatTheCopyHolds(t *testing.T) {
	at := time.Date(2026, 9, 13, 8, 0, 0, 0, time.UTC)
	copyAt := time.Date(2026, 9, 13, 1, 30, 0, 0, time.UTC)
	m := r479Manager(t, true)
	m.logger = log.New(io.Discard, "", 0)
	holds := m.UpdateCopyHolds("app", UpdateTierLocal)
	if !strings.HasPrefix(holds, "csak a beállításokat") || !strings.HasSuffix(holds, "a fájlokat nem") {
		t.Fatalf("a bind-data app's own unit holds settings and the database only, got %q", holds)
	}
	if h := m.UpdateCopyHolds("app", UpdateTierOffsite); !strings.Contains(h, "a fájlokat") || strings.Contains(h, "csak") {
		t.Errorf("off-site holds the files too, got %q", h)
	}
	if err := m.HoldAfterFailedUpdateHolding("app", at, copyAt, UpdateTierLocal, holds, ""); err != nil {
		t.Fatal(err)
	}
	_, why := m.RestoreHoldFor("app")
	want := fmt.Sprintf(UpdateHoldFmt, "app", "2026-09-13 10:00", "saját meghajtó", "2026-09-13 03:30", holds)
	if why != want {
		t.Errorf("hold text =\n%q\nwant\n%q", why, want)
	}
	if !strings.HasSuffix(why, "a fájlokat nem.") {
		t.Errorf("the sentence must END with what the copy does not hold, got %q", why)
	}
	// A hold recorded WITHOUT the phrase (v0.239.0–v0.240.0) keeps the tier-only sentence.
	if err := m.HoldAfterFailedUpdate("app2", at, copyAt, UpdateTierSecondDrive); err != nil {
		t.Fatal(err)
	}
	_, why2 := m.RestoreHoldFor("app2")
	if why2 != fmt.Sprintf(UpdateHoldTierFmt, "app2", "2026-09-13 10:00", "második meghajtó", "2026-09-13 03:30") {
		t.Errorf("tier-only hold text = %q", why2)
	}
}