package api

import (
	"context"
	"encoding/json"
	"io"
	"log"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"

	"gitea.dooplex.hu/admin/felhom-controller/internal/backup"
	"gitea.dooplex.hu/admin/felhom-controller/internal/config"
	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
	"gitea.dooplex.hu/admin/felhom-controller/internal/stacks"
)

// R-1271 (brief 2026-10-25 Part 4) — a future-dated off-site copy, the ONLY copy of the kept files: still offered (it
// may be the household's), but the question says its date is in the future and does not recommend it. Same rig as
// TestR691 (the restic runner seam; nothing reaches restic, ssh or Docker).
// COMPANION RED-PROOF (REPORT.md): with keptPick ignoring the future date, use_future stays false and this fails.
func TestR1271_AFutureCopyAloneIsSaidAndNotRecommended(t *testing.T) {
	dir := t.TempDir()
	drive := filepath.Join(dir, "drive")
	cfg := &config.Config{}
	cfg.Paths.StacksDir = filepath.Join(dir, "stacks")
	cfg.Paths.DataDir = filepath.Join(dir, "data")
	cfg.Stacks.ComposeCommand = "docker compose"
	app := filepath.Join(cfg.Paths.StacksDir, "cloudapp")
	for _, d := range []string{app, filepath.Join(drive, "appdata/cloudapp"), cfg.Paths.DataDir} {
		if err := os.MkdirAll(d, 0o755); err != nil {
			t.Fatal(err)
		}
	}
	_ = os.WriteFile(filepath.Join(app, "docker-compose.yml"), []byte("services:\n  cloudapp:\n    image: busybox\n    volumes:\n      - ${HDD_PATH}/appdata/cloudapp:/data\n"), 0o644)
	_ = os.WriteFile(filepath.Join(app, ".felhom.yml"), []byte("display_name: Cloud App\n"), 0o644)
	_ = os.WriteFile(filepath.Join(drive, "appdata/cloudapp/old.txt"), []byte("old"), 0o644)
	m, err := stacks.NewManager(cfg, log.New(io.Discard, "", 0))
	if err != nil {
		t.Fatal(err)
	}
	if err := m.ScanStacks(); err != nil {
		t.Fatal(err)
	}
	sett, err := settings.Load(filepath.Join(cfg.Paths.DataDir, "settings.json"), log.New(io.Discard, "", 0))
	if err != nil {
		t.Fatal(err)
	}
	if err := sett.SetOffboxTarget(&settings.OffboxTarget{Enabled: true, Host: "nas.local", Port: 22, User: "felhom",
		RepoPath: "/srv/repo", Schedule: "daily", EscrowState: "escrowed"}); err != nil {
		t.Fatal(err)
	}
	bm := backup.NewManager(cfg, sett, log.New(io.Discard, "", 0))
	if err := bm.WriteOffboxSecrets("KEY", "nas.local ssh-ed25519 AAAA"); err != nil {
		t.Fatal(err)
	}
	snapAt := time.Now().Add(4 * 24 * time.Hour) // the rehearsal box's clock: four days ahead
	bm.SetOffboxRunner(func(_ context.Context, _ []string, args ...string) ([]byte, error) {
		for _, a := range args {
			if a == "snapshots" {
				return json.Marshal([]map[string]interface{}{{"short_id": "abba81ba", "time": snapAt,
					"tags": []string{"cloudapp"}, "paths": []string{drive + "/backups/primary/cloudapp", drive + "/appdata/cloudapp"}}})
			}
		}
		return nil, nil
	})
	r := &Router{stackMgr: m, backupMgr: bm, logger: log.New(io.Discard, "", 0)}
	for lang, want := range map[string]string{"hu": "a jövőben van", "en": "is in the future"} {
		w := httptest.NewRecorder()
		req := httptest.NewRequest(http.MethodPost, "/api/stacks/cloudapp/deploy?lang="+lang, nil)
		if !r.keptDataAtInstall(w, req, "cloudapp", drive, "") || w.Code != http.StatusConflict {
			t.Fatalf("%s: the choice was not asked (code %d)", lang, w.Code)
		}
		var body map[string]interface{}
		_ = json.Unmarshal(w.Body.Bytes(), &body)
		data, _ := body["data"].(map[string]interface{})
		warn, _ := data["use_warn"].(string)
		if data["use_offered"] != true || data["use_future"] != true || !strings.Contains(warn, want) {
			t.Fatalf("%s: a future-dated only copy is offered, marked and said: offered=%v future=%v warn=%q", lang, data["use_offered"], data["use_future"], warn)
		}
	}
}