import { describe, it, expect, vi, beforeEach } from 'vitest';

vi.mock('$env/dynamic/private', () => ({
	env: { BACKEND_URL: 'http://localhost:8080' }
}));

const mockPatch = vi.fn();
vi.mock('$lib/server/api', () => ({
	apiClient: () => ({ PATCH: mockPatch })
}));

describe('household staples PATCH handler', () => {
	let PATCH: any;

	beforeEach(async () => {
		mockPatch.mockReset();
		const mod = await import('./+server');
		PATCH = mod.PATCH;
	});

	function createRequest(body: object) {
		return {
			request: {
				json: () => Promise.resolve(body)
			},
			fetch: vi.fn()
		} as any;
	}

	it('calls backend PATCH /v1/ingredients/{id} with isStaple', async () => {
		mockPatch.mockResolvedValue({ data: {}, error: undefined });

		await PATCH(createRequest({ id: 'ing-1', isStaple: true }));

		expect(mockPatch).toHaveBeenCalledWith('/v1/ingredients/{id}', {
			params: { path: { id: 'ing-1' } },
			body: { isStaple: true }
		});
	});

	it('returns 204 on success', async () => {
		mockPatch.mockResolvedValue({ data: {}, error: undefined });

		const response = await PATCH(createRequest({ id: 'ing-1', isStaple: true }));

		expect(response.status).toBe(204);
	});

	it('returns 500 when backend returns an error', async () => {
		mockPatch.mockResolvedValue({ data: undefined, error: { status: 500, message: 'error' } });

		const response = await PATCH(createRequest({ id: 'ing-1', isStaple: false }));

		expect(response.status).toBe(500);
	});

	it('returns 400 when id is missing', async () => {
		const response = await PATCH(createRequest({ isStaple: true }));

		expect(response.status).toBe(400);
		expect(mockPatch).not.toHaveBeenCalled();
	});

	it('returns 400 when isStaple is missing', async () => {
		const response = await PATCH(createRequest({ id: 'ing-1' }));

		expect(response.status).toBe(400);
		expect(mockPatch).not.toHaveBeenCalled();
	});

	it('returns 400 when isStaple is not a boolean', async () => {
		const response = await PATCH(createRequest({ id: 'ing-1', isStaple: 'yes' }));

		expect(response.status).toBe(400);
		expect(mockPatch).not.toHaveBeenCalled();
	});
});