"""Browser test: pasted magnet cleanup, live diagnostics and .torrent upload."""
from pathlib import Path
from playwright.sync_api import sync_playwright

root = Path(__file__).resolve().parents[1] / 'app' / 'static'
html = (root / 'index.html').read_text().replace('<link rel="stylesheet" href="/static/style.css">', '').replace('<script src="/static/app.js" defer></script>', '')
css = (root / 'style.css').read_text()
js = (root / 'app.js').read_text()

with sync_playwright() as playwright:
    browser = playwright.chromium.launch(executable_path='/usr/bin/chromium', args=['--no-sandbox', '--disable-dev-shm-usage'])
    page = browser.new_page(viewport={'width': 1280, 'height': 900})
    errors = []
    page.on('pageerror', lambda err: errors.append(str(err)))
    page.set_content(html)
    page.add_style_tag(content=css)
    page.evaluate('''() => {
      window.__seenMagnet = null;
      window.fetch = async (url, options = {}) => {
        const u = String(url), m = options.method || 'GET';
        let reply = {};
        if (u === '/api/system') reply = {free:1000000000,total:2000000000};
        else if (u === '/api/jobs' && m === 'GET') reply = [];
        else if (u === '/api/archive/session') reply = {authenticated:false};
        else if (u === '/api/magnet/inspect' && m === 'POST') {
          window.__seenMagnet = JSON.parse(options.body).magnet;
          reply = {status:'loading',preview_id:'a'.repeat(32)};
        }
        else if (u === '/api/magnet/upload') reply = {status:'ready',preview_id:'b'.repeat(32)};
        else if (u.includes('/magnet/inspect/' + 'a'.repeat(32)) && m === 'GET')
          reply = {status:'loading',elapsed:35,connections:0,aria_status:'active'};
        else if (u.includes('/magnet/inspect/' + 'b'.repeat(32)) && m === 'GET')
          reply = {status:'ready',name:'Demo',suggested:[],files:[{index:1,name:'Demo/Game.iso',size:1024,padding:false}]};
        else if (u.startsWith('/api/magnet/inspect/') && m === 'POST') reply = {ok:true};
        return new Response(JSON.stringify(reply), {status:200,headers:{'Content-Type':'application/json'}});
      };
    }''')
    page.add_script_tag(content=js)
    raw = "'**magnet**:?xt=urn:btih:c98fbaa2a36ee48e3d9423be02cdbefd9281bc7d&amp;so=15\\\n&amp;tr=udp%3A%2F%2Fexample.com%2Fannounce'"
    page.locator('#urls').fill(raw)
    page.locator('#linksForm button[type=submit]').click()
    page.locator('#magnetDialog').wait_for(state='visible')
    page.locator('#magnetStatus').get_by_text('Brak połączeń', exact=False).wait_for()
    parsed = page.evaluate('window.__seenMagnet')
    assert parsed.startswith('magnet:?xt=urn:btih:c98fbaa2a36ee48e3d9423be02cdbefd9281bc7d&so=15&tr='), parsed
    assert '\n' not in parsed and '&amp;' not in parsed
    page.screenshot(path='/mnt/data/x360-magnet-diagnostics-preview.png', full_page=True)
    page.locator('#torrentFileDialog').set_input_files({'name':'demo.torrent','mimeType':'application/x-bittorrent','buffer':b'd4:infod4:name4:Demoe e'})
    page.locator('#magnetResults').wait_for(state='visible')
    assert page.locator('#magnetFiles input[type=checkbox]').count() == 1
    page.screenshot(path='/mnt/data/x360-magnet-upload-preview.png', full_page=True)
    assert not errors, errors
    browser.close()
    print('UI magnet fallback PASS')