import { test, expect, BrowserContext, Browser, Page, chromium } from '@playwright/test';
import { waitForElementInIframe } from '../helpers/function-helpers';
import fs from 'fs';

test.describe('Web Component E2E Tests', () => {
	const testAppUrl = 'http://localhost:5080';
	const testRoomPrefix = 'test-room';

	let browser: Browser;
	let context: BrowserContext;
	let page: Page;

	test.beforeAll(async () => {
		// Create a test room before all tests
		const tempBrowser = await chromium.launch();
		const tempContext = await tempBrowser.newContext();
		const tempPage = await tempContext.newPage();
		await tempPage.goto(testAppUrl);
		await tempPage.waitForSelector('.create-room');
		await tempPage.fill('#room-id-prefix', testRoomPrefix);
		await tempPage.click('.create-room-btn');
		await tempPage.waitForSelector(`#${testRoomPrefix}`);
		await tempBrowser.close();
	});

	test.beforeEach(async () => {
		browser = await chromium.launch({ headless: false });
		const storageState = fs.existsSync('test_localstorage_state.json')
			? { storageState: 'test_localstorage_state.json' }
			: {};
		context = await browser.newContext(storageState);
		page = await context.newPage();
		await page.goto(testAppUrl);
		await page.waitForSelector('.rooms-container');
		await page.waitForSelector(`#${testRoomPrefix}`);
		await page.click('.dropdown-button');
		await page.waitForSelector('#join-as-moderator');
		await page.waitForSelector('#join-as-publisher');
	});

	test.afterEach(async () => {
		await context.storageState({ path: 'test_localstorage_state.json' });
		await browser.close();
	});

	test.describe('Component Rendering', () => {
		test('should load the web component with proper iframe', async () => {
			await page.click('#join-as-moderator');
			const component = page.locator('openvidu-meet');
			await expect(component).toBeVisible();

			const hasIframe = await page.evaluate(() => {
				const component = document.querySelector('openvidu-meet');
				return !!component?.shadowRoot?.querySelector('iframe');
			});
			expect(hasIframe).toBeTruthy();
		});
	});

	test.describe('Event Handling', () => {
		test('should successfully join as moderator and receive JOIN event', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			await page.waitForSelector('.event-JOIN');
			const joinElements = await page.locator('.event-JOIN').all();
			expect(joinElements.length).toBe(1);
		});

		test('should successfully join as publisher and receive JOIN event', async () => {
			await page.click('#join-as-publisher');
			await waitForElementInIframe(page, 'ov-session');
			await page.waitForSelector('.event-JOIN');
			const joinElements = await page.locator('.event-JOIN').all();
			expect(joinElements.length).toBe(1);
		});

		test('should successfully join to room and receive LEFT event when using leave command', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			await page.click('#leave-room-btn');
			await page.waitForSelector('.event-LEFT');
			const leftElements = await page.locator('.event-LEFT').all();
			expect(leftElements.length).toBe(1);
		});

		test('should successfully join to room and receive LEFT event when using disconnect button', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			const button = await waitForElementInIframe(page, '#leave-btn');
			await button.click();
			await page.waitForSelector('.event-LEFT');
			const leftElements = await page.locator('.event-LEFT').all();
			expect(leftElements.length).toBe(1);
		});

		test('should successfully join to room and receive MEETING_ENDED event when using end meeting command', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			await page.click('#end-meeting-btn');
			await page.waitForSelector('.event-MEETING_ENDED');
			const meetingEndedElements = await page.locator('.event-MEETING_ENDED').all();
			expect(meetingEndedElements.length).toBe(1);

			// Check LEFT event does not exist
			const leftEventElements = await page.locator('.event-LEFT').all();
			expect(leftEventElements.length).toBe(0);
		});
	});

	test.describe('Webhook Handling', () => {
		test('should successfully join to room and receive meetingStarted webhook', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			await page.waitForSelector('.webhook-meetingStarted');
			const meetingStartedElements = await page.locator('.webhook-meetingStarted').all();
			expect(meetingStartedElements.length).toBe(1);
		});

		test('should successfully join to room and receive meetingEnded webhook', async () => {
			await page.click('#join-as-moderator');
			await waitForElementInIframe(page, 'ov-session');
			await page.click('#end-meeting-btn');
			await page.waitForSelector('.webhook-meetingEnded');
			const meetingEndedElements = await page.locator('.webhook-meetingEnded').all();
			expect(meetingEndedElements.length).toBe(1);
		});
	});
});