import { test, expect } from '@playwright/test';

test.describe('Language selector', () => {
	test('shows DE, EN, ES buttons in the header', async ({ page }) => {
		await page.goto('/');
		await expect(page.getByRole('banner').getByRole('button', { name: 'DE' })).toBeVisible();
		await expect(page.getByRole('banner').getByRole('button', { name: 'EN' })).toBeVisible();
		await expect(page.getByRole('banner').getByRole('button', { name: 'ES' })).toBeVisible();
	});

	test('switching to EN translates the navigation', async ({ page }) => {
		await page.goto('/');
		await page.getByRole('banner').getByRole('button', { name: 'EN' }).click();
		await expect(page.getByRole('navigation').getByRole('link', { name: 'Documents' })).toBeVisible();
		await expect(page.getByRole('navigation').getByRole('link', { name: 'Persons' })).toBeVisible();
	});

	test('language choice persists after navigation', async ({ page }) => {
		await page.goto('/');
		await page.getByRole('banner').getByRole('button', { name: 'EN' }).click();
		await page.goto('/persons');
		await expect(page.getByRole('navigation').getByRole('link', { name: 'Documents' })).toBeVisible();
	});

	test('switching back to DE restores German', async ({ page }) => {
		await page.goto('/');
		await page.getByRole('banner').getByRole('button', { name: 'EN' }).click();
		await page.getByRole('banner').getByRole('button', { name: 'DE' }).click();
		await expect(page.getByRole('navigation').getByRole('link', { name: 'Dokumente' })).toBeVisible();
	});

	test('active language button is visually highlighted', async ({ page }) => {
		await page.goto('/');
		const deBtn = page.getByRole('banner').getByRole('button', { name: 'DE' });
		await expect(deBtn).toHaveClass(/font-bold/);
	});
});