// @ts-check
// Test: LD1 — the PhotoSwipe slide's declared dimensions must match what the
// browser actually renders for the linked image (BUG 2026-07-09: portrait
// iPhone JPEGs squeezed to landscape in the fullscreen lightbox).
//
// Root cause: entry-journal.html.twig fed `img.width`/`img.height` (raw
// getimagesize() of the ORIGINAL file — EXIF orientation ignored) into
// data-pswp-*, while the slide href pointed at that original, which browsers
// display EXIF-rotated. For a stored-landscape portrait photo the attrs said
// landscape while the pixels rendered portrait → PhotoSwipe squeezed them.
//
// The invariant tested here is environment-proof: whatever file the slide
// links to, its browser-rendered natural size must equal the data-pswp-*
// attrs. (Whether the photo ALSO displays upright depends on the server's
// php-exif extension feeding auto_fix_orientation — present on prod, absent
// in the local dev container — so upright-ness is deliberately not asserted.)
//
// The fixture entry is planted straight on disk in the DEMO trip (the active
// trip is whatever site.yaml says and may be an unpublished draft that 404s;
// this spec exercises template rendering, not the posting pipeline — that is
// upload-gate.spec.js's job). touch(system.yaml) bumps the config checksum so
// the page-tree index rebuilds — the same invalidation cache-on-save uses.
const { test, expect } = require('@playwright/test');
const path = require('path');
const fs = require('fs');
const { execSync } = require('child_process');

// Stored 800x600 with EXIF Orientation=6: browsers render it 600x800 portrait.
const EXIF_PORTRAIT = path.join(__dirname, '../../fixtures/test-photo-exif-portrait.jpg');
const USER_DIR = path.join(__dirname, '../../../user');
const DEMO_DAILIES = path.join(USER_DIR, 'pages/01.trips/italy-2026-demo/01.dailies');
const DEMO_TRIP_URL = '/trips/italy-2026-demo';

const TAG = `ld1-fixture-${Date.now()}`;
const ENTRY_DIR = path.join(DEMO_DAILIES, `2026-09-30-1200-${TAG}.entry`);

function bumpPageTreeIndex() {
    // mtime bump on system.yaml changes config->checksum(), which keys the
    // pages index — next request rebuilds the tree from disk.
    execSync(`touch "${path.join(USER_DIR, 'config/system.yaml')}"`);
}

test.beforeAll(() => {
    fs.mkdirSync(ENTRY_DIR, { recursive: true });
    fs.copyFileSync(EXIF_PORTRAIT, path.join(ENTRY_DIR, 'photo-01.jpg'));
    fs.writeFileSync(path.join(ENTRY_DIR, 'entry.md'), [
        '---',
        `title: 'UI Test ${TAG}'`,
        "date: '2026-09-30 12:00'",
        'template: entry',
        'published: true',
        '---',
        '',
        `Lightbox dims fixture ${TAG}. Safe to delete.`,
        '',
    ].join('\n'));
    bumpPageTreeIndex();
});

test.afterAll(() => {
    fs.rmSync(ENTRY_DIR, { recursive: true, force: true });
    bumpPageTreeIndex();
});

test('LD1: lightbox slide dims match the rendered size of the linked image', async ({ page }) => {
    const card = page.locator('.journal-post', { hasText: TAG });
    const slide = card.locator('a.journal-photo-slide').first();

    // The config-checksum bump has second-granularity mtimes; a goto in the
    // same second can still be served the stale cached page. Reload until the
    // planted card is in the rendered feed.
    await expect(async () => {
        await page.goto(DEMO_TRIP_URL);
        await expect(slide).toBeAttached({ timeout: 1000 });
    }).toPass({ timeout: 20_000 });

    const attrW = Number(await slide.getAttribute('data-pswp-width'));
    const attrH = Number(await slide.getAttribute('data-pswp-height'));
    const href = await slide.getAttribute('href');
    expect(attrW).toBeGreaterThan(0);
    expect(attrH).toBeGreaterThan(0);

    const natural = await page.evaluate((src) => new Promise((resolve, reject) => {
        const i = new Image();
        i.onload = () => resolve({ w: i.naturalWidth, h: i.naturalHeight });
        i.onerror = () => reject(new Error('image failed to load: ' + src));
        i.src = src;
    }), href);

    expect(natural.w, `data-pswp-width vs rendered width of ${href}`).toBe(attrW);
    expect(natural.h, `data-pswp-height vs rendered height of ${href}`).toBe(attrH);
});