/**
 * E2E tests for the ObsiGate image viewer (roadmap #108).
 *
 * Fixtures : `test_vault/sample-image.png` (96x64) + `test_vault/sample-vector.svg`.
 *
 * Run (local):
 *   BASE_URL=http://localhost:2029 npx playwright test tests/e2e/image-viewer.spec.js
 *   BASE_URL=http://localhost:2029 npx playwright test tests/e2e/image-viewer.spec.js --headed
 */

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

const BASE = process.env.BASE_URL || 'http://localhost:2029';

const CREDS = {
  username: process.env.OBSIGATE_USER || 'admin',
  password: process.env.OBSIGATE_PASS || 'test123',
};

async function login(page) {
  await page.goto(BASE);
  const loginForm = page.locator('#login-screen');
  await expect(loginForm).toBeVisible({ timeout: 5000 }).catch(() => {});
  if (await loginForm.isVisible()) {
    await page.fill('#login-username', CREDS.username);
    await page.fill('#login-password', CREDS.password);
    await page.click('#login-btn');
  }
  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
}

async function openFile(page, vault, filePath) {
  const treeItem = page.locator(`.tree-item[data-vault="${vault}"][data-path="${filePath}"]`);
  if (!(await treeItem.count())) {
    await page.locator(`.tree-item.vault-item[data-vault="${vault}"]`).first().click();
    await treeItem.waitFor({ state: 'attached', timeout: 8000 });
  }
  await treeItem.dblclick({ timeout: 5000 });
}

test.describe('Image viewer — zoom / pan / navigation (#108)', () => {

  test('affiche l\'image dans la visionneuse dédiée (URL /api/image)', async ({ page }) => {
    // #108-B1 — l'image isolée doit pointer vers /api/image (octets), pas /raw (JSON).
    const imageResponsePromise = page.waitForResponse(
      (r) => r.url().includes('/api/image/') && r.status() === 200,
      { timeout: 15000 },
    );

    await login(page);
    await openFile(page, 'TestVault', 'sample-image.png');

    const main = page.locator('#content-area .image-viewer-container img.image-main');
    await expect(main).toBeVisible({ timeout: 10000 });
    await expect(main).toHaveAttribute('src', /\/api\/image\/TestVault\?path=/);

    const resp = await imageResponsePromise;
    expect(resp.headers()['content-type']).toContain('image/png');

    // Le badge de zoom démarre à 100 %.
    await expect(page.locator('#content-area .image-zoom-badge')).toHaveText('100%');
  });

  test('le zoom molette et le reset modifient la transform', async ({ page }) => {
    await login(page);
    await openFile(page, 'TestVault', 'sample-image.png');
    await expect(page.locator('#content-area .image-stage')).toBeVisible({ timeout: 10000 });

    const badge = page.locator('#content-area .image-zoom-badge');
    await expect(badge).toHaveText('100%');

    await page.locator('#content-area .image-stage').hover();
    await page.mouse.wheel(0, -240);
    await expect(badge).not.toHaveText('100%', { timeout: 5000 });

    const transform = await page.locator('#content-area img.image-main').evaluate(
      (el) => getComputedStyle(el).transform,
    );
    expect(transform).not.toBe('none');

    // Double-clic = réinitialisation.
    await page.locator('#content-area .image-stage').dblclick();
    await expect(badge).toHaveText('100%');
  });

  test('navigue entre les images du dossier via la pellicule', async ({ page }) => {
    await login(page);
    await openFile(page, 'TestVault', 'sample-image.png');

    const strip = page.locator('#content-area .image-nav-strip');
    await expect(strip).toBeVisible({ timeout: 10000 });
    // sample-image.png et sample-vector.svg partagent le dossier racine.
    await expect(strip.locator('img.image-thumb')).toHaveCount(2);

    await page.locator('#content-area .image-nav-strip img.image-thumb').first().click();
    await expect(page.locator('#content-area .image-title')).toBeVisible();
  });
});