const { test, expect } = require('@playwright/test');

const png = Buffer.from(
  'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+/p9sAAAAASUVORK5CYII=',
  'base64',
);

async function mockModels(page) {
  await page.route('**/api/models', async (route) => {
    await route.fulfill({
      status: 200,
      contentType: 'application/json',
      body: JSON.stringify({
        defaultModel: 'claude-haiku-4.5',
        models: [
          { id: 'claude-haiku-4.5', name: 'Claude Haiku 4.5' },
        ],
      }),
    });
  });

  await page.route('**/api/models/search', async (route) => {
    await route.fulfill({
      status: 200,
      contentType: 'application/json',
      body: JSON.stringify({
        count: 2,
        models: [
          { id: 'claude-sonnet-4.6', name: 'Claude Sonnet 4.6' },
          { id: 'gemini-2.5-flash', name: 'Gemini 2.5 Flash' },
        ],
      }),
    });
  });

  await page.route('**/api/models/add', async (route) => {
    const body = route.request().postDataJSON();
    await route.fulfill({
      status: 200,
      contentType: 'application/json',
      body: JSON.stringify({
        ok: true,
        defaultModel: 'claude-haiku-4.5',
        models: [
          { id: 'claude-haiku-4.5', name: 'Claude Haiku 4.5' },
          { id: body.id, name: body.name || body.id },
        ],
      }),
    });
  });
}

async function login(page) {
  await mockModels(page);
  await page.goto('/');
  await expect(page).toHaveURL(/\/login$/);
  await expect(page.getByRole('heading', { name: 'Sign in' })).toBeVisible();
  await page.locator('#password').fill('test-password');
  await page.getByRole('button', { name: 'Sign in' }).click();
  await expect(page.getByRole('heading', { name: 'Dashboard' })).toBeVisible();
}

test('requires authentication before loading the app', async ({ page, request }) => {
  await page.goto('/');
  await expect(page).toHaveURL(/\/login$/);
  await expect(page.getByRole('heading', { name: 'Sign in' })).toBeVisible();

  const response = await request.post('/api/chat', { data: {} });
  expect(response.status()).toBe(401);
});

test.describe('authenticated app', () => {
  test.beforeEach(async ({ page }) => {
    await login(page);
    await page.evaluate(() => localStorage.clear());
    await page.reload();
    await expect(page.getByRole('heading', { name: 'Dashboard' })).toBeVisible();
  });

  test('uses searchable page navigation and validates missing meal input', async ({ page }) => {
    await expect(page.getByRole('navigation', { name: 'Main menu' })).toBeVisible();
    await expect(page.locator('#todayCalories')).toHaveText('0 kcal');

    await page.locator('#menu-search').fill('log');
    await expect(page.getByRole('button', { name: 'Log meal' })).toBeVisible();
    await page.getByRole('button', { name: 'Log meal' }).click();
    await page.getByRole('button', { name: 'Analyze and save' }).click();
    await expect(page.locator('#status')).toContainText('Describe the meal or upload an image.');
  });

  test('adds curated models in settings, backfills a meal, edits, trashes, and restores', async ({ page }) => {
    let calls = 0;
    await page.route('**/api/chat', async (route) => {
      calls += 1;
      const content = calls === 1
        ? '{"foods":["salmon","rice","broccoli","berries"],"calories":620,"proteinGrams":42,"carbsGrams":58,"fatGrams":22,"fruitServings":0.5,"vegetableServings":1.5}'
        : '{"mealName":"Salmon rice bowl","calories":640,"proteinGrams":44,"carbsGrams":60,"fatGrams":23,"fruitServings":0.5,"vegetableServings":1.5,"foodGroups":"fish, grains, fruit, vegetables","notes":"Estimated from image and portion note."}';

      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ choices: [{ message: { content } }] }),
      });
    });

    await page.getByRole('banner').getByRole('button', { name: 'Settings' }).click();
    await page.locator('#modelSearch').fill('gemini');
    await page.getByRole('button', { name: 'Search' }).click();
    await expect(page.getByText('Gemini 2.5 Flash')).toBeVisible();
    await page.getByRole('button', { name: '+' }).last().click();
    await page.locator('#visionModel').selectOption('gemini-2.5-flash');
    await page.locator('#taskModel').selectOption('gemini-2.5-flash');
    await page.getByRole('button', { name: 'Save selected models' }).click();
    await expect(page.locator('#modelStatus')).toContainText('Models saved.');

    await page.getByRole('button', { name: 'Log meal' }).click();
    await page.locator('#mealDate').fill('2026-05-18');
    await page.locator('#mealTime').fill('08:15');
    await page.locator('#mealType').selectOption('Breakfast');
    await page.locator('#description').fill('salmon rice bowl with broccoli and berries');
    await page.locator('#measure').fill('one dinner bowl');
    await page.locator('#image').setInputFiles({ name: 'meal.png', mimeType: 'image/png', buffer: png });
    await expect(page.locator('#preview')).toBeVisible();

    await page.getByRole('button', { name: 'Analyze and save' }).click();
    await expect(page.locator('#status')).toContainText('Saved.');

    await page.locator('nav').getByRole('button').filter({ hasText: 'Diary' }).click();
    await expect(page.locator('.entry')).toContainText('Salmon rice bowl');
    await expect(page.locator('.entry')).toContainText('2026-05-18 08:15 · Breakfast');
    await page.getByRole('button', { name: 'Edit' }).click();
    await expect(page.getByRole('heading', { name: 'Edit meal' })).toBeVisible();
    await page.getByLabel('Calories').fill('610');
    await page.getByRole('button', { name: 'Save edits' }).click();

    await page.locator('nav').getByRole('button').filter({ hasText: 'Analytics' }).click();
    await expect(page.locator('#calorieChart')).toBeVisible();
    await expect(page.locator('#produceChart')).toBeVisible();

    await page.locator('nav').getByRole('button').filter({ hasText: 'Diary' }).click();
    await page.getByRole('checkbox').check();
    await page.getByRole('button', { name: 'Move selected to trash' }).click();
    await expect(page.locator('#entries')).toContainText('No meals match the current filters.');
    await page.locator('nav').getByRole('button').filter({ hasText: 'Trash' }).click();
    await expect(page.locator('#trashEntries')).toContainText('Salmon rice bowl');
    await page.getByRole('button', { name: 'Restore' }).click();
    await expect(page.locator('#trashEntries')).toContainText('Trash is empty.');
  });
});