package services

import (
	"image"
	"image/png"
	"os"
	"path/filepath"
	"testing"
	"time"
)

func TestScanner_EndToEnd_NoQRCode(t *testing.T) {
	dir := t.TempDir()
	imgPath := filepath.Join(dir, "blank.png")

	f, err := os.Create(imgPath)
	if err != nil {
		t.Fatal(err)
	}
	img := image.NewRGBA(image.Rect(0, 0, 120, 120))
	if err := png.Encode(f, img); err != nil {
		t.Fatal(err)
	}
	_ = f.Close()

	store := NewTaskStore()
	scanner := NewScanner(store, 0)

	task := &Task{
		ID:        "t1",
		TempDir:   dir,
		CreatedAt: time.Now(),
		UpdatedAt: time.Now(),
		Status:    TaskUploaded,
		Files: []TaskFile{
			{Index: 1, RelPath: "blank.png", AbsPath: imgPath},
		},
		Concurrency: 1,
		TimeoutS:    5,
	}
	store.Put(task)

	if err := scanner.Start(task); err != nil {
		t.Fatal(err)
	}

	deadline := time.Now().Add(5 * time.Second)
	for time.Now().Before(deadline) {
		cur, _ := store.Get("t1")
		if cur.Status == TaskCompleted || cur.Status == TaskCanceled || cur.Status == TaskFailed {
			results := cur.Results()
			if len(results) != 1 {
				t.Fatalf("expected 1 result, got %d", len(results))
			}
			if results[1].Success {
				t.Fatalf("expected failure")
			}
			return
		}
		time.Sleep(50 * time.Millisecond)
	}

	t.Fatalf("timeout waiting for task completion")
}