package services

import (
	"errors"
	"path/filepath"
	"strings"
	"testing"

	"cmbone/internal/models"
)

func TestMigrateCreatesImageTaskTables(t *testing.T) {
	store := newTestStore(t)

	for _, table := range []string{"image_tasks", "image_task_results"} {
		var name string
		if err := store.DB.QueryRow("SELECT name FROM sqlite_master WHERE type = 'table' AND name = ?", table).Scan(&name); err != nil {
			t.Fatalf("query table %s: %v", table, err)
		}
		if name != table {
			t.Fatalf("table = %q, want %q", name, table)
		}
	}
}

func TestImageOptimizationServiceCreateTask(t *testing.T) {
	store := newTestStore(t)
	service := NewImageOptimizationService(store)
	sourcePath := filepath.Join(t.TempDir(), "sku-main.jpg")

	detail, err := service.CreateTask(models.ImageTaskInput{
		SourcePath: sourcePath,
		Operation:  "enhance",
	})
	if err != nil {
		t.Fatalf("create task: %v", err)
	}

	if detail.Task.ID == 0 {
		t.Fatal("task id is empty")
	}
	if detail.Task.Status != imageTaskStatusSucceeded {
		t.Fatalf("status = %q, want %q", detail.Task.Status, imageTaskStatusSucceeded)
	}
	if detail.Task.Operation != "enhance" {
		t.Fatalf("operation = %q, want enhance", detail.Task.Operation)
	}
	if detail.Result.TaskID != detail.Task.ID {
		t.Fatalf("result task id = %d, want %d", detail.Result.TaskID, detail.Task.ID)
	}
	if !strings.Contains(detail.Result.OutputPath, "sku-main_enhance_optimized.jpg") {
		t.Fatalf("output path = %q, want simulated optimized path", detail.Result.OutputPath)
	}

	got, err := service.GetTask(detail.Task.ID)
	if err != nil {
		t.Fatalf("get task: %v", err)
	}
	if got.Task.ID != detail.Task.ID {
		t.Fatalf("got task id = %d, want %d", got.Task.ID, detail.Task.ID)
	}

	tasks, err := service.ListTasks(models.ImageTaskFilter{Status: imageTaskStatusSucceeded})
	if err != nil {
		t.Fatalf("list tasks: %v", err)
	}
	if len(tasks) != 1 {
		t.Fatalf("tasks len = %d, want 1", len(tasks))
	}
}

func TestImageOptimizationServiceCreateTaskRequiresSourcePath(t *testing.T) {
	store := newTestStore(t)
	service := NewImageOptimizationService(store)

	_, err := service.CreateTask(models.ImageTaskInput{})
	if !errors.Is(err, errImageTaskSourcePathRequired) {
		t.Fatalf("create task error = %v, want source path required", err)
	}
}