package web

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/appbackup"
	"gitea.dooplex.hu/admin/felhom-controller/internal/appexport"
	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
)

// R-126 (operator ruling 2026-10-05, 09 §3 decision 128): an export WITHOUT a bundle password to a
// network drive is refused; WITH a password it runs; a local drive without a password is unchanged.
// The assertions are the consequence — whether a .fab lands on the destination — not only the status.
func TestExportStart_NetworkDriveNeedsPassword(t *testing.T) {
	build := func(t *testing.T, kind string) (*Server, *appexport.Exporter, string) {
		s := testServer(t)
		s.cfg.Paths.DataDir = t.TempDir()
		drive := t.TempDir()
		stackDir := t.TempDir()
		os.WriteFile(filepath.Join(stackDir, "docker-compose.yml"), []byte("services: {}\n"), 0644)
		fabWrite(t, drive, "userdata/media/books/a.epub", "BOOK")
		prov := &fabWebProvider{stackDir: stackDir, stacksDir: t.TempDir(), hddPath: drive,
			binds: []appbackup.ClassifiedBind{
				{ComposeBind: appbackup.ComposeBind{Root: appbackup.RootUserdata, RelPath: "media/books"}, Class: appbackup.ClassMandatory},
			}}
		e := appexport.NewExporter(prov, s.logger, "test")
		s.appExporter = e
		if err := s.settings.AddStoragePath(settings.StoragePath{Path: drive, Label: "d", Kind: kind, Schedulable: true}); err != nil {
			t.Fatal(err)
		}
		if got := s.settings.IsNetworkStoragePath(drive); got != (kind == settings.StorageKindNetwork) {
			t.Fatalf("fixture: IsNetworkStoragePath(%q)=%v for kind %q", drive, got, kind)
		}
		return s, e, drive
	}
	start := func(s *Server, drive, password string) (*httptest.ResponseRecorder, map[string]interface{}) {
		body, _ := json.Marshal(map[string]interface{}{"stack_name": "calibre-web", "dest_drive": drive, "password": password})
		rr := httptest.NewRecorder()
		req := httptest.NewRequest(http.MethodPost, "/api/export/start", strings.NewReader(string(body)))
		req.Header.Set("Content-Type", "application/json")
		s.apiExportStart(rr, req)
		var resp map[string]interface{}
		json.Unmarshal(rr.Body.Bytes(), &resp)
		return rr, resp
	}
	fabCount := func(dir string) int {
		n := 0
		filepath.Walk(dir, func(p string, info os.FileInfo, err error) error {
			if err == nil && strings.HasSuffix(p, ".fab") {
				n++
			}
			return nil
		})
		return n
	}

	t.Run("network drive, no password: refused, nothing written", func(t *testing.T) {
		s, e, drive := build(t, settings.StorageKindNetwork)
		rr, resp := start(s, drive, "")
		if rr.Code != http.StatusBadRequest || resp["ok"] != false {
			t.Fatalf("want 400 ok=false, got %d %s", rr.Code, rr.Body.String())
		}
		msg, _ := resp["error"].(string)
		// ASCII fragments of the Hungarian sentence (positive), and never the raw key (negative).
		if !strings.Contains(msg, "(NAS)") || !strings.Contains(msg, "jelsz") || strings.Contains(msg, "app_export.") {
			t.Errorf("refusal text is not the household sentence: %q", msg)
		}
		if j := e.GetActiveJob(); j != nil {
			t.Errorf("an export job started despite the refusal: %v", j.Snapshot())
		}
		if n := fabCount(drive); n != 0 {
			t.Errorf("%d .fab file(s) landed on the network drive without a password", n)
		}
	})

	t.Run("network drive, with password: runs", func(t *testing.T) {
		s, e, drive := build(t, settings.StorageKindNetwork)
		rr, resp := start(s, drive, "correct horse battery")
		if rr.Code != http.StatusOK || resp["ok"] != true {
			t.Fatalf("want 200 ok=true, got %d %s", rr.Code, rr.Body.String())
		}
		waitExportDone(t, e)
		if n := fabCount(drive); n != 1 {
			t.Errorf("want 1 .fab on the network drive, got %d", n)
		}
	})

	t.Run("local drive, no password: unchanged", func(t *testing.T) {
		s, e, drive := build(t, "")
		rr, resp := start(s, drive, "")
		if rr.Code != http.StatusOK || resp["ok"] != true {
			t.Fatalf("want 200 ok=true, got %d %s", rr.Code, rr.Body.String())
		}
		waitExportDone(t, e)
		if n := fabCount(drive); n != 1 {
			t.Errorf("want 1 .fab on the local drive, got %d", n)
		}
	})
}