// ==UserScript==
// @name         schizophrenia-desktop-notifs (v1.0)
// @namespace    violentmonkey‑fullchan‑x
// @match        https://8chan.moe/*/res/*.html*
// @match        https://8chan.se/*/res/*.html*
// @version      1.0‑2025‑05‑03
// @run-at       document-start
// @description  Desktop notifs on (You)
// @author       schizo75
// @grant        none
// ==/UserScript==

function showNotificationPermissionPrompt() {
    if (document.getElementById('fcx-notif-permission')) return; // already shown

    const box = document.createElement('div');
    box.id = 'fcx-notif-permission';
    box.style.cssText = `
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: #111;
        color: white;
        padding: 12px 16px;
        border-radius: 6px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        font-family: sans-serif;
        z-index: 9999;
    `;

    box.innerHTML = `
        🔔 Enable desktop notifications?<br>
        <button id="fcx-enable-notifs" style="
            margin-top: 8px;
            padding: 4px 10px;
            background: #3a82f7;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        ">Enable</button>
    `;

    document.body.appendChild(box);

    document.getElementById('fcx-enable-notifs')?.addEventListener('click', () => {
        Notification.requestPermission().then(permission => {
            if (permission === 'granted') {
                box.remove();
                console.log('[FCX] Notifications enabled.');
            } else {
                box.textContent = '🔕 Notifications disabled.';
                setTimeout(() => box.remove(), 3000);
            }
        });
    });
}


(function monitorYouQuotesWithThrottle() {
    const notifiedPostIds = new Set();
    let lastNotificationTime = 0;
    const MIN_INTERVAL_MS = 60 * 1000; // 1 minute

    function sendNotification(postId) {
        const now = Date.now();
        if (now - lastNotificationTime < MIN_INTERVAL_MS) return;
        lastNotificationTime = now;

        new Notification('(You) quoted', {
            body: `Your post was quoted in >>${postId}`,
            tag: `you-${postId}`,
        });
    }

    function handleNewYouQuote(node) {
        const link = node.closest('a.quoteLink.you, a.quotelink.you');
        if (!link) return;

        const postEl = link.closest('[id]');
        if (!postEl) return;

        const postId = postEl.id;
        if (notifiedPostIds.has(postId)) return;

        notifiedPostIds.add(postId);

        if (Notification.permission === 'granted') {
            sendNotification(postId);
        } else if (Notification.permission === 'default') {
            Notification.requestPermission();
        }
    }

    function waitForBodyAndStart() {
        if (!document.body) {
            requestAnimationFrame(waitForBodyAndStart);
            return;
        }

        const observer = new MutationObserver(mutations => {
            for (const mutation of mutations) {
                for (const node of mutation.addedNodes) {
                    if (!(node instanceof Element)) continue;

                    const youLinks = node.querySelectorAll?.('a.quoteLink.you, a.quotelink.you') || [];
                    youLinks.forEach(link => handleNewYouQuote(link));

                    if (node.matches?.('a.quoteLink.you, a.quotelink.you')) {
                        handleNewYouQuote(node);
                    }
                }
            }
        });

        observer.observe(document.body, {
            childList: true,
            subtree: true,
        });

        console.log('[FCX] (You) quote monitor with throttled desktop notifications is active.');
        showNotificationPermissionPrompt();

    }

    waitForBodyAndStart();
})();