package user

import (
	"os"
	"path/filepath"
	"testing"

	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func setupTestDB(t *testing.T) *gorm.DB {
	t.Helper()

	dbPath := filepath.Join("testdata", "users.db")

	_ = os.Remove(dbPath)

	db, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{})
	if err != nil {
		t.Fatalf("failed to open db: %v", err)
	}

	if err := db.AutoMigrate(&User{}); err != nil {
		t.Fatalf("failed to migrate: %v", err)
	}

	return db
}

func TestUsersCRUD(t *testing.T) {
	db := setupTestDB(t)

	store, err := NewGormUserStore(db)
	if err != nil {
		t.Fatalf("failed to create store: %v", err)
	}

	service, err := NewService(store)
	if err != nil {
		t.Fatalf("failed to create service: %v", err)
	}

	user := &User{
		Username: "testuser",
		Email:    "test@example.com",
		Password: "password123",
	}

	if err := service.Create(user); err != nil {
		t.Fatalf("failed to create user: %v", err)
	}
	retrieved, err := service.GetByID(user.ID)
	if err != nil {
		t.Fatalf("failed to get user by ID: %v", err)
	}
	if retrieved.Username != user.Username {
		t.Fatalf("expected username %s, got %s", user.Username, retrieved.Username)
	}

	retrievedByUsername, err := service.GetByUsername(user.Username)
	if err != nil {
		t.Fatalf("failed to get user by username: %v", err)
	}
	if retrievedByUsername.Email != user.Email {
		t.Fatalf("expected email %s, got %s", user.Email, retrievedByUsername.Email)
	}

	user.Email = "newemail@example.com"
	if err := service.Update(user); err != nil {
		t.Fatalf("failed to update user: %v", err)
	}
	retrieved, err = service.GetByID(user.ID)
	if err != nil {
		t.Fatalf("failed to get user by ID: %v", err)
	}
	if retrieved.Email != user.Email {
		t.Fatalf("expected email %s, got %s", user.Email, retrieved.Email)
	}
	err = service.Delete(user.ID)
	if err != nil {
		t.Fatalf("failed to delete user: %v", err)
	}
}