import { chromium } from 'playwright';

const browser = await chromium.launch({ channel: 'chrome', headless: false, slowMo: 200 });

const contextA = await browser.newContext({ viewport: { width: 390, height: 844 } });
const contextB = await browser.newContext({ viewport: { width: 390, height: 844 } });
const pageA = await contextA.newPage();
const pageB = await contextB.newPage();

const BASE = 'http://localhost:5173';

console.log('⏳ Arrange the two browser windows side by side. Starting in 8 seconds...');
await new Promise(r => setTimeout(r, 8000));

async function step(name, fn) {
	process.stdout.write(`▶ ${name}... `);
	try {
		await fn();
		console.log('✅');
	} catch (e) {
		console.log(`❌ ${e.message}`);
		throw e;
	}
}

async function register(page, name) {
	await page.goto(BASE);
	await page.waitForURL('**/login', { timeout: 5000 });
	await page.click('text=Create account');
	await page.fill('input[placeholder="Name"]', name);
	await page.fill('input[placeholder="Password"]', 'password123');
	await page.fill('input[placeholder="Family code"]', 'dev-family-code');
	await page.click('button[type="submit"]');
	await page.waitForURL('**/lists', { timeout: 5000 });
}

try {
	await step('Register User A (Mom)', async () => {
		await register(pageA, 'Mom');
	});

	await step('Register User B (Dad)', async () => {
		await register(pageB, 'Dad');
	});

	// Mom creates a store
	await step('Mom creates store "Kroger"', async () => {
		await pageA.click('a:has-text("Stores")');
		await pageA.waitForURL('**/stores');
		await pageA.fill('input[placeholder="New store name"]', 'Kroger');
		await pageA.click('button:has-text("Add")');
		await pageA.waitForSelector('text=Kroger');
	});

	// Both on lists overview — Mom creates a list, Dad should see it appear via SignalR
	await step('Mom navigates to Lists', async () => {
		await pageA.click('a:has-text("Lists")');
		await pageA.waitForURL('**/lists');
	});

	await step('Mom creates list → Dad sees it appear on overview', async () => {
		await pageA.click('text=+ New list');
		await pageA.fill('input[placeholder="List name"]', 'Weekly Groceries');
		await pageA.selectOption('select', { label: 'Kroger' });
		await pageA.click('button:has-text("Create")');
		await pageA.waitForSelector('text=Weekly Groceries');
		// Dad should see it appear without navigating away
		await pageB.waitForSelector('text=Weekly Groceries', { timeout: 5000 });
	});

	// Both open the list
	await step('Mom opens the list', async () => {
		await pageA.click('text=Weekly Groceries');
		await pageA.waitForURL(/\/lists\/\d+/);
	});

	await step('Dad opens the same list', async () => {
		await pageB.click('text=Weekly Groceries');
		await pageB.waitForURL(/\/lists\/\d+/);
	});

	// Mom adds items — Dad should see them appear in real-time
	await step('Mom adds "Milk" → Dad sees it appear', async () => {
		await pageA.fill('input[placeholder="Add an item..."]', 'Milk');
		await pageA.click('button:has-text("Add")');
		await pageA.waitForSelector('text=Milk');
		await pageB.waitForSelector('text=Milk', { timeout: 5000 });
	});

	await step('Mom adds "Eggs" → Dad sees it appear', async () => {
		await pageA.fill('input[placeholder="Add an item..."]', 'Eggs');
		await pageA.click('button:has-text("Add")');
		await pageA.waitForSelector('text=Eggs');
		await pageB.waitForSelector('text=Eggs', { timeout: 5000 });
	});

	await step('Mom adds "Bread" → Dad sees it appear', async () => {
		await pageA.fill('input[placeholder="Add an item..."]', 'Bread');
		await pageA.click('button:has-text("Add")');
		await pageA.waitForSelector('text=Bread');
		await pageB.waitForSelector('text=Bread', { timeout: 5000 });
	});

	// Dad checks off Milk — Mom should see it checked
	await step('Dad checks "Milk" → Mom sees it checked', async () => {
		await pageB.click('button[aria-label="Check Milk"]');
		await pageB.waitForSelector('text=Checked (1)');
		await pageA.waitForSelector('text=Checked (1)', { timeout: 5000 });
	});

	// Mom checks off Eggs — Dad should see it
	await step('Mom checks "Eggs" → Dad sees it checked', async () => {
		await pageA.click('button[aria-label="Check Eggs"]');
		await pageA.waitForSelector('text=Checked (2)');
		await pageB.waitForSelector('text=Checked (2)', { timeout: 5000 });
	});

	// Dad unchecks Milk — Mom should see it unchecked
	await step('Dad unchecks "Milk" → Mom sees it unchecked', async () => {
		await pageB.click('button[aria-label="Uncheck Milk"]');
		await pageB.waitForSelector('text=Checked (1)');
		await pageA.waitForSelector('text=Checked (1)', { timeout: 5000 });
	});

	// Dad adds an item — Mom should see it
	await step('Dad adds "Butter" → Mom sees it appear', async () => {
		await pageB.fill('input[placeholder="Add an item..."]', 'Butter');
		await pageB.click('button:has-text("Add")');
		await pageB.waitForSelector('text=Butter');
		await pageA.waitForSelector('text=Butter', { timeout: 5000 });
	});

	// Mom removes Bread — Dad should see it disappear
	await step('Mom removes "Bread" → Dad sees it disappear', async () => {
		await pageA.click('button[aria-label="Remove Bread"]');
		await pageA.waitForFunction(() => !document.body.textContent.includes('Bread'), { timeout: 3000 });
		await pageB.waitForFunction(() => !document.body.textContent.includes('Bread'), { timeout: 5000 });
	});

	console.log('\n🎉 All multi-user tests passed! Real-time sync works.');
} catch (e) {
	console.error(`\n💥 Test failed: ${e.message}`);
	process.exitCode = 1;
} finally {
	await new Promise(r => setTimeout(r, 2000));
	await browser.close();
}