import { describe, it, expect, vi } from 'vitest';
import { fetchCrabfitData, filterMemberData, findMeetingOptions } from '$lib/meeting';

// vi.mock('node-fetch', async () => ({
// 	default: vi.fn(() =>
// 		Promise.resolve({
// 			json: () => Promise.resolve(mockData)
// 		})
// 	)
// }));
const mockData = [
	{
		name: 'Alice',
		availability: ['1100-1', '1115-1', '1130-1', '1100-2'],
		created_at: 1000000000
	},
	{
		name: 'Bob',
		availability: ['1100-1', '1400-1', '1500-1'],
		created_at: 1000000001
	},
	// Charlie has no times on Monday, but does on Tuesdays
	{
		name: 'Charlie',
		availability: ['2000-1', '1100-2'],
		created_at: 1000000002
	}
];

const testData = [
	{
		name: 'B',
		availability: ['0900-1', '0915-1', '0930-1', '0945-1', '1000-1', '1015-1', '1030-1', '1045-1'],
		created_at: 1753176466
	},
	{
		name: 'A',
		availability: ['0800-1', '0815-1', '0830-1', '0845-1', '0900-1', '0915-1', '0930-1', '0945-1'],
		created_at: 1753176450
	}
];

const CRABFIT_TEST_API_URL = 'https://api.crab.fit/event/schedulertestdata-850919';

describe('findMeetingOptions', () => {
	it('returns options correctly', async () => {
		const options = await findMeetingOptions([mockData[0], mockData[1]], {
			days: ['Monday'],
			number: 1
		});
		expect(options).toEqual([{ 'Option 1': ['Monday', '1100'] }]);
	});

	it('returns options correctly', async () => {
		const options = await findMeetingOptions([mockData[0], mockData[2]], {
			days: ['Tuesday'],
			number: 1
		});
		expect(options).toEqual([{ 'Option 1': ['Tuesday', '1100'] }]);
	});

	it('returns no options for impossible constraints', async () => {
		const options = await findMeetingOptions([mockData[0], mockData[2]], {
			days: ['Monday'],
			number: 1
		});
		expect(options).toEqual([]);
	});
});

describe('filterMemberData', () => {
	it('filters member data', async () => {
		const members = ['A', 'B'];
		const result = await filterMemberData(members, testData);
		expect(result).toEqual(expect.arrayContaining(testData));
	});
});

describe('fetchCrabfitData', () => {
	it('gets member data', async () => {
		expect(await fetchCrabfitData(CRABFIT_TEST_API_URL)).toEqual(testData);
	});
});

describe('integration', () => {
	it('finds meetings with fetched data', async () => {
		const crabfitData = await fetchCrabfitData(CRABFIT_TEST_API_URL);
		const members = ['A', 'B'];
		const memberData = await filterMemberData(members, crabfitData);

		const options = await findMeetingOptions(memberData, {
			days: ['Monday'],
			number: 1
		});
		expect(options).toEqual([{ 'Option 1': ['Monday', '0900'] }]);
	});
	it('finds meetings with test data', async () => {
		const members = ['A', 'B'];
		const memberData = await filterMemberData(members, testData);

		const options = await findMeetingOptions(memberData, {
			days: ['Monday'],
			number: 1
		});
		expect(options).toEqual([{ 'Option 1': ['Monday', '0900'] }]);
	});
});