// ================================================================
// 03_captcha.js — hCaptcha detection & server alert
// Depends on: uw, BASE_URL, log, paused (00_config.js / 01_ui.js)
// ================================================================

let captchaActive = false;

function reportCaptcha(detected) {
    const player_id = uw.Game?.player_id;
    if (!player_id) return;
    fetch(`${BASE_URL}/api/captcha/alert?player_id=${player_id}`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ detected })
    }).catch(e => log(`captcha report failed: ${e}`));
}

function detectCaptcha() {
    setInterval(() => {
        const win = document.getElementById('hcaptcha_window');
        let isVisible = false;

        if (win) {
            const style = window.getComputedStyle(win);
            if (style.display !== 'none' && style.visibility !== 'hidden') {
                isVisible = true;
            }
        }

        if (isVisible && !captchaActive) {
            captchaActive = true;
            paused = true;
            const label = document.getElementById('grc_label');
            const btn   = document.getElementById('grc_btn');
            if (label) label.textContent = '⚠ CAPTCHA';
            if (btn)   btn.style.filter  = 'brightness(70%) sepia(100%) hue-rotate(300deg) saturate(1000%) contrast(0.8)';
            log('⚠ CAPTCHA detected — bot paused, alerting server');
            reportCaptcha(true);
        } else if (!isVisible && captchaActive) {
            captchaActive = false;
            log('✅ Captcha resolved — alert cleared (bot remains paused)');
            reportCaptcha(false);
        }
    }, 1000);
}