import { test, expect, type Page } from '@playwright/test';
import { execSync } from 'child_process';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const baseUrl = process.env.PLAYWRIGHT_BASE_URL || 'http://localhost:4173';
const urlMatch = baseUrl.match(/:(\d+)$/);
const PORT = urlMatch ? urlMatch[1] : '4173';
const ALPHA_URL = `http://ecole-alpha.classeo.local:${PORT}`;

const ADMIN_EMAIL = 'e2e-parenthw-admin@example.com';
const ADMIN_PASSWORD = 'AdminParentHW123';
const PARENT_EMAIL = 'e2e-parenthw-parent@example.com';
const PARENT_PASSWORD = 'ParentHomework123';
const TEACHER_EMAIL = 'e2e-parenthw-teacher@example.com';
const TEACHER_PASSWORD = 'TeacherParentHW123';
const STUDENT1_EMAIL = 'e2e-parenthw-student1@example.com';
const STUDENT1_PASSWORD = 'Student1ParentHW123';
const STUDENT2_EMAIL = 'e2e-parenthw-student2@example.com';
const STUDENT2_PASSWORD = 'Student2ParentHW123';
const TENANT_ID = 'a1b2c3d4-e5f6-7890-abcd-ef1234567890';

const projectRoot = join(__dirname, '../..');
const composeFile = join(projectRoot, 'compose.yaml');

let student1UserId: string;
let student2UserId: string;

function runSql(sql: string) {
	execSync(
		`docker compose -f "${composeFile}" exec -T php php bin/console dbal:run-sql "${sql}" 2>&1`,
		{ encoding: 'utf-8' }
	);
}

function clearCache() {
	try {
		execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console cache:pool:clear paginated_queries.cache 2>&1`,
			{ encoding: 'utf-8' }
		);
	} catch {
		// Cache pool may not exist
	}
}

function resolveDeterministicIds(): { schoolId: string; academicYearId: string } {
	const output = execSync(
		`docker compose -f "${composeFile}" exec -T php php -r '` +
			`require "/app/vendor/autoload.php"; ` +
			`$t="${TENANT_ID}"; $ns="6ba7b814-9dad-11d1-80b4-00c04fd430c8"; ` +
			`echo Ramsey\\Uuid\\Uuid::uuid5($ns,"school-$t")->toString()."\\n"; ` +
			`$m=(int)date("n"); $s=$m>=9?(int)date("Y"):(int)date("Y")-1; $e=$s+1; ` +
			`echo Ramsey\\Uuid\\Uuid::uuid5($ns,"$t:$s-$e")->toString();` +
			`' 2>&1`,
		{ encoding: 'utf-8' }
	).trim();
	const [schoolId, academicYearId] = output.split('\n');
	return { schoolId: schoolId!, academicYearId: academicYearId! };
}

function extractUserId(output: string): string {
	const match = output.match(/User ID\s+([a-f0-9-]{36})/i);
	if (!match) {
		throw new Error(`Could not extract User ID from command output:\n${output}`);
	}
	return match[1];
}

function getNextWeekday(daysFromNow: number): string {
	const date = new Date();
	date.setDate(date.getDate() + daysFromNow);
	const day = date.getDay();
	if (day === 0) date.setDate(date.getDate() + 1);
	if (day === 6) date.setDate(date.getDate() + 2);
	const y = date.getFullYear();
	const m = String(date.getMonth() + 1).padStart(2, '0');
	const d = String(date.getDate()).padStart(2, '0');
	return `${y}-${m}-${d}`;
}

function getTomorrowWeekday(): string {
	return getNextWeekday(1);
}

async function loginAsAdmin(page: Page) {
	await page.goto(`${ALPHA_URL}/login`);
	await page.locator('#email').fill(ADMIN_EMAIL);
	await page.locator('#password').fill(ADMIN_PASSWORD);
	await Promise.all([
		page.waitForURL(/\/dashboard/, { timeout: 30000 }),
		page.getByRole('button', { name: /se connecter/i }).click()
	]);
}

async function loginAsParent(page: Page) {
	await page.goto(`${ALPHA_URL}/login`);
	await page.locator('#email').fill(PARENT_EMAIL);
	await page.locator('#password').fill(PARENT_PASSWORD);
	await Promise.all([
		page.waitForURL(/\/dashboard/, { timeout: 30000 }),
		page.getByRole('button', { name: /se connecter/i }).click()
	]);
}

async function addGuardianIfNotLinked(page: Page, studentId: string, parentSearchTerm: string, relationship: string) {
	await page.goto(`${ALPHA_URL}/admin/students/${studentId}`);
	await expect(page.locator('.guardian-section')).toBeVisible({ timeout: 10000 });
	await expect(
		page.getByText(/aucun parent\/tuteur/i).or(page.locator('.guardian-list'))
	).toBeVisible({ timeout: 10000 });

	const addButton = page.getByRole('button', { name: /ajouter un parent/i });
	if (!(await addButton.isVisible())) return;

	const sectionText = await page.locator('.guardian-section').textContent();
	if (sectionText && sectionText.includes(parentSearchTerm)) return;

	await addButton.click();
	const dialog = page.getByRole('dialog');
	await expect(dialog).toBeVisible({ timeout: 5000 });

	const searchInput = dialog.getByRole('combobox', { name: /rechercher/i });
	await searchInput.fill(parentSearchTerm);

	const listbox = dialog.locator('#parent-search-listbox');
	await expect(listbox).toBeVisible({ timeout: 10000 });
	const option = listbox.locator('[role="option"]').first();
	await option.click();

	await expect(dialog.getByText(/sélectionné/i)).toBeVisible();

	await dialog.getByLabel(/type de relation/i).selectOption(relationship);
	await dialog.getByRole('button', { name: 'Ajouter' }).click();

	await expect(
		page.locator('.alert-success').or(page.locator('.alert-error'))
	).toBeVisible({ timeout: 10000 });
}

test.describe('Parent Homework Consultation (Story 5.8)', () => {
	test.describe.configure({ mode: 'serial', timeout: 60000 });

	const urgentDueDate = getTomorrowWeekday();
	const futureDueDate = getNextWeekday(10);

	test.beforeAll(async ({ browser }, testInfo) => {
		testInfo.setTimeout(120000);
		try {
			execSync(
				`docker compose -f "${composeFile}" exec -T php php bin/console cache:pool:clear cache.rate_limiter users.cache --env=dev 2>&1`,
				{ encoding: 'utf-8' }
			);
		} catch {
			// Cache pools may not exist
		}

		// Create users
		execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console app:dev:create-test-user --tenant=ecole-alpha --email=${ADMIN_EMAIL} --password=${ADMIN_PASSWORD} --role=ROLE_ADMIN 2>&1`,
			{ encoding: 'utf-8' }
		);

		execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console app:dev:create-test-user --tenant=ecole-alpha --email=${PARENT_EMAIL} --password=${PARENT_PASSWORD} --role=ROLE_PARENT --firstName=ParentHW --lastName=TestUser 2>&1`,
			{ encoding: 'utf-8' }
		);

		execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console app:dev:create-test-user --tenant=ecole-alpha --email=${TEACHER_EMAIL} --password=${TEACHER_PASSWORD} --role=ROLE_PROF 2>&1`,
			{ encoding: 'utf-8' }
		);

		const student1Output = execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console app:dev:create-test-user --tenant=ecole-alpha --email=${STUDENT1_EMAIL} --password=${STUDENT1_PASSWORD} --role=ROLE_ELEVE --firstName=Emma --lastName=ParentHWTest 2>&1`,
			{ encoding: 'utf-8' }
		);
		student1UserId = extractUserId(student1Output);

		const student2Output = execSync(
			`docker compose -f "${composeFile}" exec -T php php bin/console app:dev:create-test-user --tenant=ecole-alpha --email=${STUDENT2_EMAIL} --password=${STUDENT2_PASSWORD} --role=ROLE_ELEVE --firstName=Lucas --lastName=ParentHWTest 2>&1`,
			{ encoding: 'utf-8' }
		);
		student2UserId = extractUserId(student2Output);

		const { schoolId, academicYearId } = resolveDeterministicIds();

		// Ensure classes exist
		try {
			runSql(
				`INSERT INTO school_classes (id, tenant_id, school_id, academic_year_id, name, level, status, created_at, updated_at) ` +
					`VALUES (gen_random_uuid(), '${TENANT_ID}', '${schoolId}', '${academicYearId}', 'E2E-PHW-6A', '6ème', 'active', NOW(), NOW()) ON CONFLICT DO NOTHING`
			);
			runSql(
				`INSERT INTO school_classes (id, tenant_id, school_id, academic_year_id, name, level, status, created_at, updated_at) ` +
					`VALUES (gen_random_uuid(), '${TENANT_ID}', '${schoolId}', '${academicYearId}', 'E2E-PHW-6B', '6ème', 'active', NOW(), NOW()) ON CONFLICT DO NOTHING`
			);
		} catch {
			// May already exist
		}

		// Ensure subjects exist
		try {
			runSql(
				`INSERT INTO subjects (id, tenant_id, school_id, name, code, color, status, created_at, updated_at) ` +
					`VALUES (gen_random_uuid(), '${TENANT_ID}', '${schoolId}', 'E2E-PHW-Maths', 'E2EPHWMAT', '#3b82f6', 'active', NOW(), NOW()) ON CONFLICT DO NOTHING`
			);
			runSql(
				`INSERT INTO subjects (id, tenant_id, school_id, name, code, color, status, created_at, updated_at) ` +
					`VALUES (gen_random_uuid(), '${TENANT_ID}', '${schoolId}', 'E2E-PHW-Français', 'E2EPHWFRA', '#ef4444', 'active', NOW(), NOW()) ON CONFLICT DO NOTHING`
			);
		} catch {
			// May already exist
		}

		// Assign students to classes
		runSql(
			`INSERT INTO class_assignments (id, tenant_id, user_id, school_class_id, academic_year_id, assigned_at, created_at, updated_at) ` +
				`SELECT gen_random_uuid(), '${TENANT_ID}', u.id, c.id, '${academicYearId}', NOW(), NOW(), NOW() ` +
				`FROM users u, school_classes c ` +
				`WHERE u.email = '${STUDENT1_EMAIL}' AND u.tenant_id = '${TENANT_ID}' ` +
				`AND c.name = 'E2E-PHW-6A' AND c.tenant_id = '${TENANT_ID}' ` +
				`ON CONFLICT DO NOTHING`
		);

		runSql(
			`INSERT INTO class_assignments (id, tenant_id, user_id, school_class_id, academic_year_id, assigned_at, created_at, updated_at) ` +
				`SELECT gen_random_uuid(), '${TENANT_ID}', u.id, c.id, '${academicYearId}', NOW(), NOW(), NOW() ` +
				`FROM users u, school_classes c ` +
				`WHERE u.email = '${STUDENT2_EMAIL}' AND u.tenant_id = '${TENANT_ID}' ` +
				`AND c.name = 'E2E-PHW-6B' AND c.tenant_id = '${TENANT_ID}' ` +
				`ON CONFLICT DO NOTHING`
		);

		// Clean up stale homework from previous runs
		try {
			runSql(
				`DELETE FROM homework WHERE tenant_id = '${TENANT_ID}' AND class_id IN ` +
					`(SELECT id FROM school_classes WHERE name IN ('E2E-PHW-6A', 'E2E-PHW-6B') AND tenant_id = '${TENANT_ID}')`
			);
		} catch {
			// Table may not exist
		}

		// Seed homework for both classes
		// Urgent homework (due tomorrow) for class 6A
		runSql(
			`INSERT INTO homework (id, tenant_id, class_id, subject_id, teacher_id, title, description, due_date, status, created_at, updated_at) ` +
				`SELECT gen_random_uuid(), '${TENANT_ID}', c.id, s.id, t.id, 'Devoir urgent maths', 'Exercices urgents', '${urgentDueDate}', 'published', NOW(), NOW() ` +
				`FROM school_classes c, ` +
				`(SELECT id FROM subjects WHERE code = 'E2EPHWMAT' AND tenant_id = '${TENANT_ID}' LIMIT 1) s, ` +
				`(SELECT id FROM users WHERE email = '${TEACHER_EMAIL}' AND tenant_id = '${TENANT_ID}') t ` +
				`WHERE c.name = 'E2E-PHW-6A' AND c.tenant_id = '${TENANT_ID}'`
		);

		// Future homework for class 6A
		runSql(
			`INSERT INTO homework (id, tenant_id, class_id, subject_id, teacher_id, title, description, due_date, status, created_at, updated_at) ` +
				`SELECT gen_random_uuid(), '${TENANT_ID}', c.id, s.id, t.id, 'Rédaction français Emma', 'Écrire une rédaction', '${futureDueDate}', 'published', NOW(), NOW() ` +
				`FROM school_classes c, ` +
				`(SELECT id FROM subjects WHERE code = 'E2EPHWFRA' AND tenant_id = '${TENANT_ID}' LIMIT 1) s, ` +
				`(SELECT id FROM users WHERE email = '${TEACHER_EMAIL}' AND tenant_id = '${TENANT_ID}') t ` +
				`WHERE c.name = 'E2E-PHW-6A' AND c.tenant_id = '${TENANT_ID}'`
		);

		// Homework for class 6B (Lucas)
		runSql(
			`INSERT INTO homework (id, tenant_id, class_id, subject_id, teacher_id, title, description, due_date, status, created_at, updated_at) ` +
				`SELECT gen_random_uuid(), '${TENANT_ID}', c.id, s.id, t.id, 'Exercices maths Lucas', 'Exercices chapitre 7', '${futureDueDate}', 'published', NOW(), NOW() ` +
				`FROM school_classes c, ` +
				`(SELECT id FROM subjects WHERE code = 'E2EPHWMAT' AND tenant_id = '${TENANT_ID}' LIMIT 1) s, ` +
				`(SELECT id FROM users WHERE email = '${TEACHER_EMAIL}' AND tenant_id = '${TENANT_ID}') t ` +
				`WHERE c.name = 'E2E-PHW-6B' AND c.tenant_id = '${TENANT_ID}'`
		);

		// Link parent to both students via admin UI
		const page = await browser.newPage();
		await loginAsAdmin(page);
		await addGuardianIfNotLinked(page, student1UserId, PARENT_EMAIL, 'tuteur');
		await addGuardianIfNotLinked(page, student2UserId, PARENT_EMAIL, 'tutrice');
		await page.close();

		clearCache();
	});

	// ======================================================================
	// AC1: Liste devoirs enfant
	// ======================================================================
	test.describe('AC1: Homework List', () => {
		test('parent can navigate to homework page via navigation', async ({ page }) => {
			await loginAsParent(page);

			const nav = page.locator('.desktop-nav');
			await expect(nav.getByRole('link', { name: /devoirs/i })).toBeVisible({ timeout: 15000 });
		});

		test('parent homework page shows homework list', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			await expect(
				page.getByRole('heading', { name: /devoirs des enfants/i })
			).toBeVisible({ timeout: 15000 });

			// Homework cards should be visible
			const cards = page.locator('.homework-card');
			await expect(cards.first()).toBeVisible({ timeout: 10000 });
		});
	});

	// ======================================================================
	// AC2: Vue identique élève (sans marquage "Fait")
	// ======================================================================
	test.describe('AC2: Student-like View Without Done Toggle', () => {
		test('homework cards do NOT show done toggle checkbox', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const card = page.locator('.homework-card').first();
			await expect(card).toBeVisible({ timeout: 10000 });

			// No toggle-done button should exist (privacy)
			await expect(card.locator('.toggle-done')).toHaveCount(0);
		});

		test('homework cards show title and due date', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const card = page.locator('.homework-card').first();
			await expect(card).toBeVisible({ timeout: 10000 });

			// Title visible
			await expect(card.locator('.card-title')).toBeVisible();
			// Due date visible
			await expect(card.locator('.due-date')).toBeVisible();
		});
	});

	// ======================================================================
	// AC3: Vue multi-enfants
	// ======================================================================
	test.describe('AC3: Multi-Child View', () => {
		test('parent with multiple children sees child selector', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const childSelector = page.locator('.child-selector');
			await expect(childSelector).toBeVisible({ timeout: 10000 });

			// Should have "Tous" + 2 children buttons
			const buttons = childSelector.locator('.child-button');
			await expect(buttons).toHaveCount(3);
		});

		test('consolidated view shows homework grouped by child', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			// Wait for data to load
			const card = page.locator('[data-testid="homework-card"]').first();
			await expect(card).toBeVisible({ timeout: 10000 });

			// Both children's names should appear as section headers
			const childNames = page.locator('[data-testid="child-name"]');
			await expect(childNames).toHaveCount(2, { timeout: 10000 });
		});

		test('clicking a specific child filters to their homework', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const childSelector = page.locator('.child-selector');
			await expect(childSelector).toBeVisible({ timeout: 10000 });

			// Click on first child (Emma)
			const buttons = childSelector.locator('.child-button');
			await buttons.nth(1).click();

			// Wait for data to reload
			const card = page.locator('.homework-card').first();
			await expect(card).toBeVisible({ timeout: 10000 });

			// Should no longer show multiple child sections
			await expect(page.locator('.child-name')).toHaveCount(0, { timeout: 5000 });
		});
	});

	// ======================================================================
	// AC4: Mise en évidence urgence
	// ======================================================================
	test.describe('AC4: Urgency Highlight', () => {
		test('homework due tomorrow shows urgent badge', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			await expect(page.locator('[data-testid="homework-card"]').first()).toBeVisible({ timeout: 10000 });

			// Find urgent badge — text depends on when test runs relative to seeded date
			const urgentBadge = page.locator('[data-testid="urgent-badge"]');
			await expect(urgentBadge.first()).toBeVisible({ timeout: 5000 });
			await expect(urgentBadge.first()).toContainText(/pour demain|aujourd'hui|en retard/i);
		});

		test('urgent homework card has red styling', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			await expect(page.locator('[data-testid="homework-card"]').first()).toBeVisible({ timeout: 10000 });

			// Urgent card should have the urgent class
			const urgentCard = page.locator('[data-testid="homework-card"].urgent');
			await expect(urgentCard.first()).toBeVisible({ timeout: 5000 });
		});

		test('urgent homework shows contact teacher link', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			await expect(page.locator('[data-testid="homework-card"]').first()).toBeVisible({ timeout: 10000 });

			// Contact teacher link should be visible on urgent homework
			const contactLink = page.locator('[data-testid="contact-teacher"]');
			await expect(contactLink.first()).toBeVisible({ timeout: 5000 });
			await expect(contactLink.first()).toContainText(/contacter l'enseignant/i);
		});

		test('contact teacher link points to messaging page', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			await expect(page.locator('[data-testid="homework-card"]').first()).toBeVisible({ timeout: 10000 });

			const contactLink = page.locator('[data-testid="contact-teacher"]').first();
			await expect(contactLink).toBeVisible({ timeout: 5000 });

			// Verify href contains message creation path with proper encoding
			const href = await contactLink.getAttribute('href');
			expect(href).toContain('/messages/new');
			expect(href).toContain('to=');
			expect(href).toContain('subject=Devoir');
		});
	});

	// ======================================================================
	// Homework detail
	// ======================================================================
	test.describe('Homework Detail', () => {
		test('clicking a homework card shows detail view', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const card = page.locator('.homework-card').first();
			await expect(card).toBeVisible({ timeout: 10000 });
			await card.click();

			await expect(page.locator('.homework-detail')).toBeVisible({ timeout: 10000 });
			await expect(page.locator('.detail-title')).toBeVisible();
		});

		test('back button returns to homework list', async ({ page }) => {
			await loginAsParent(page);
			await page.goto(`${ALPHA_URL}/dashboard/parent-homework`);

			const card = page.locator('.homework-card').first();
			await expect(card).toBeVisible({ timeout: 10000 });
			await card.click();

			await expect(page.locator('.homework-detail')).toBeVisible({ timeout: 10000 });

			// Click back
			await page.locator('.back-button').click();
			await expect(page.locator('.homework-card').first()).toBeVisible({ timeout: 5000 });
		});
	});
});