import { Test, TestingModule } from "@nestjs/testing";
import { CategoriesRepository } from "../categories/repositories/categories.repository";
import { ContentsRepository } from "../contents/repositories/contents.repository";
import { UsersRepository } from "../users/repositories/users.repository";
import { AdminService } from "./admin.service";

describe("AdminService", () => {
	let service: AdminService;
	let _usersRepository: UsersRepository;
	let _contentsRepository: ContentsRepository;
	let _categoriesRepository: CategoriesRepository;

	const mockUsersRepository = {
		countAll: jest.fn(),
	};

	const mockContentsRepository = {
		count: jest.fn(),
	};

	const mockCategoriesRepository = {
		countAll: jest.fn(),
	};

	beforeEach(async () => {
		const module: TestingModule = await Test.createTestingModule({
			providers: [
				AdminService,
				{ provide: UsersRepository, useValue: mockUsersRepository },
				{ provide: ContentsRepository, useValue: mockContentsRepository },
				{ provide: CategoriesRepository, useValue: mockCategoriesRepository },
			],
		}).compile();

		service = module.get<AdminService>(AdminService);
		_usersRepository = module.get<UsersRepository>(UsersRepository);
		_contentsRepository = module.get<ContentsRepository>(ContentsRepository);
		_categoriesRepository =
			module.get<CategoriesRepository>(CategoriesRepository);
	});

	it("should return stats", async () => {
		mockUsersRepository.countAll.mockResolvedValue(10);
		mockContentsRepository.count.mockResolvedValue(20);
		mockCategoriesRepository.countAll.mockResolvedValue(5);

		const result = await service.getStats();

		expect(result).toEqual({
			users: 10,
			contents: 20,
			categories: 5,
		});
		expect(mockUsersRepository.countAll).toHaveBeenCalled();
		expect(mockContentsRepository.count).toHaveBeenCalledWith({});
		expect(mockCategoriesRepository.countAll).toHaveBeenCalled();
	});
});