import { getSitePlugins } from '@launch/api/DataApi';

const mockUseUserSelectionStore = {
	getState: jest.fn(),
};
const originalFetch = global.fetch;

describe('getSitePlugins', () => {
	beforeEach(() => {
		global.fetch = jest.fn();

		window.extSharedData = Object.assign({}, window.extSharedData, {
			wpLanguage: 'en',
			partnerId: 'partner-123',
			pluginGroupId: 'group-xyz',
		});
		mockUseUserSelectionStore.getState.mockReturnValue({
			businessInformation: { description: 'My business' },
			siteObjective: 'Grow',
		});
	});

	afterEach(() => {
		jest.clearAllMocks();
		global.fetch = originalFetch;
	});

	it('returns merged plugins on successful fetch with valid JSON', async () => {
		const apiSelected = ['a', 'b'];
		global.fetch.mockResolvedValueOnce({
			ok: true,
			json: () => ({ selectedPlugins: apiSelected }),
		});

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		const expected = apiSelected;
		expect(result).toEqual(expected);
		expect(global.fetch).toHaveBeenCalledTimes(1);
	});

	it('returns fallback when siteProfile is falsy (no fetch)', async () => {
		const result = await getSitePlugins({ siteProfile: null, siteQA: [] });

		const expectedFallback = [];
		expect(result).toEqual(expectedFallback);
		expect(global.fetch).not.toHaveBeenCalled();
	});

	it('retries when first fetch throws (network) and second returns ok -> returns merged plugins', async () => {
		const apiSelected = ['x'];
		global.fetch
			.mockRejectedValueOnce(new Error('Network error'))
			.mockResolvedValueOnce({
				ok: true,
				json: () => ({ selectedPlugins: apiSelected }),
			});

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual(apiSelected);
		expect(global.fetch).toHaveBeenCalledTimes(2);
	});

	it('retries when first response is not ok; returns merged plugins if second is ok', async () => {
		const apiSelected = ['p'];
		global.fetch.mockResolvedValueOnce({ ok: false }).mockResolvedValueOnce({
			ok: true,
			json: () => ({ selectedPlugins: apiSelected }),
		});

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });
		expect(result).toEqual(apiSelected);
		expect(global.fetch).toHaveBeenCalledTimes(2);
	});

	it('returns fallback when both fetch attempts throw', async () => {
		global.fetch
			.mockRejectedValueOnce(new Error('Network error'))
			.mockRejectedValueOnce(new Error('Still failing'));

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual([]);
		expect(global.fetch).toHaveBeenCalledTimes(2);
	});

	it('returns fallback when second fetch resolves but not ok', async () => {
		global.fetch
			.mockRejectedValueOnce(new Error('Network error'))
			.mockResolvedValueOnce({ ok: false });

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual([]);
		expect(global.fetch).toHaveBeenCalledTimes(2);
	});

	it('returns fallback when response is ok but JSON parsing fails', async () => {
		global.fetch.mockResolvedValueOnce({
			ok: true,
			json: () => {
				throw new Error('Invalid JSON');
			},
		});

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual([]);
		expect(global.fetch).toHaveBeenCalledTimes(1);
	});

	it('returns fallback when response ok=true but payload has no selectedPlugins', async () => {
		global.fetch.mockResolvedValueOnce({
			ok: true,
			json: () => ({}),
		});

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual([]);
		expect(global.fetch).toHaveBeenCalledTimes(1);
	});

	it('returns fallback when first fetch resolves undefined (retries by design)', async () => {
		global.fetch
			.mockResolvedValueOnce(undefined)
			.mockResolvedValueOnce({ ok: false });

		const result = await getSitePlugins({ siteProfile: { id: 1 }, siteQA: [] });

		expect(result).toEqual([]);
		expect(global.fetch).toHaveBeenCalledTimes(2);
	});
});