#!/usr/bin/env python3
"""Erzeugt die Screenshots in docs/screenshots aus der laufenden Demo-Instanz.

Voraussetzung:
    python3 tools/demo/build.py /tmp/uvt-demo
    php -S 127.0.0.1:8123 -t /tmp/uvt-demo &

Aufruf:
    python3 tools/screenshots.py [basis-url]
"""
import os
import shutil
import subprocess
import sys

ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
OUT = os.path.join(ROOT, 'docs', 'screenshots')
SCALE = 2

# (Datei, Pfad, Breite, Hoehe) – Breite/Hoehe in CSS-Pixeln, Ausgabe in 2x
SHOTS = [
    ('login.png',                'login.php?anon=1',                1200, 850),
    ('login-branding.png',       'login.php?anon=1&brand=custom',   1200, 850),
    ('voucher-form.png',         'index.php',                       1200, 880),
    ('voucher-result.png',       'index.php?demo=result',           1200, 900),
    ('bulk-vouchers.png',        'index.php?demo=bulk',             1200, 800),
    ('admin-dashboard.png',      'admin/index.php',                 1200, 1400),
    ('admin-dashboard-dark.png', 'admin/index.php?theme=dark',      1200, 1400),
    ('vouchers.png',             'admin/vouchers.php',              1200, 1120),
    ('settings.png',             'admin/settings.php',              1200, 950),
    ('settings-login.png',       'admin/settings.php?tab=login',        1200, 1000),
    ('settings-branding.png',    'admin/settings.php?tab=branding',     1200, 900),
    ('api-keys.png',             'admin/api_keys.php?demo=new',     1200, 830),
    ('integrations.png',         'admin/integrations.php',          1200, 900),
    ('two-factor.png',           'admin/security.php',              1200, 900),
    ('updater.png',              'admin/update.php',                1200, 780),
    ('updater-available.png',    'admin/update.php?demo=available', 1200, 780),
    ('kiosk-display.png',        'kiosk.php?k=a1b2c3d4e5f60718293a4b5c6d7e8f90',            1200, 900),
    ('kiosk-code.png',           'kiosk.php?k=a1b2c3d4e5f60718293a4b5c6d7e8f90&demo=code',  1200, 900),
    ('kiosks-admin.png',         'admin/kiosks.php',                1200, 780),
    ('mobile-vouchers.png',      'admin/users.php',                  430, 860),
    ('maintenance.png',          'updater/templates/maintenance.html', 1200, 700),
]

CANDIDATES = [
    os.environ.get('CHROME_BIN', ''),
    '/usr/bin/chromium', '/usr/bin/chromium-browser', '/usr/bin/google-chrome',
    '/opt/pw-browsers/chromium', shutil.which('chromium') or '',
]


def find_browser() -> str:
    for path in CANDIDATES:
        if path and os.path.isfile(path) and os.access(path, os.X_OK):
            return path
    raise SystemExit('Kein Chromium gefunden – Pfad ueber CHROME_BIN setzen.')


def main() -> int:
    base = (sys.argv[1] if len(sys.argv) > 1 else 'http://127.0.0.1:8123').rstrip('/')
    browser = find_browser()
    os.makedirs(OUT, exist_ok=True)

    for name, path, width, height in SHOTS:
        target = os.path.join(OUT, name)
        subprocess.run([
            browser, '--headless', '--no-sandbox', '--disable-gpu', '--hide-scrollbars',
            '--force-color-profile=srgb', '--disable-lcd-text', '--font-render-hinting=none',
            '--virtual-time-budget=4000', '--force-prefers-reduced-motion',
            '--force-device-scale-factor=%d' % SCALE,
            '--window-size=%d,%d' % (width, height),
            '--screenshot=%s' % target,
            '%s/%s' % (base, path),
        ], check=False, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        print('%-28s %s' % (name, 'ok' if os.path.exists(target) else 'FEHLER'))

    return 0


if __name__ == '__main__':
    raise SystemExit(main())