antispam reupload

(function() {
    const style = document.createElement('style');
    style.innerHTML = `
        .spam-container-block { margin: 2px 0; border: 1px solid #ccc; border-radius: 2px; clear: both; }
        .spam-header-btn {
            width: 100%;
            text-align: left;
            border: none;
            padding: 3px 10px;
            cursor: pointer;
            outline: none;
            display: block;
            border-bottom: 1px solid #ccc;
            background: #e5e5ff;
        }
        .spam-body-content {
            display: none;
            padding: 2px 5px;
            height: auto !important;
            contain: none !important;
            overflow: visible !important;
        }
    `;
    document.head.appendChild(style);

    const REPEAT_THRESHOLD = 2;
    const FLOOD_THRESHOLD = 5;
    const FLOOD_TIME_WINDOW = 5000;

    let activeSpamBlocks = { page: null, global: null };
    let lastMsgTracker = {
        page: { text: "", sender: "", count: 0 },
        global: { text: "", sender: "", count: 0 }
    };
    let userFloodLog = {};

    function createSpamWrapper(field, location) {
        const wrapper = document.createElement("div");
        wrapper.className = "spam-container-block";

        const header = document.createElement("button");
        header.className = "spam-header-btn";
        header.innerHTML = `[+] Show filtered spam (1 message)`;

        const body = document.createElement("div");
        body.className = "spam-body-content";

        header.onclick = (event) => {
            event.preventDefault();
            const isHidden = body.style.display === "none";
            body.style.display = isHidden ? "block" : "none";
            header.style.filter = isHidden ? "brightness(0.9)" : "none";
            header.innerHTML = `${isHidden ? "[-]" : "[+]" } Show filtered spam (${wrapper.msgCount} messages)`;
        };

        wrapper.appendChild(header);
        wrapper.appendChild(body);
        field.appendChild(wrapper);

        wrapper.header = header;
        wrapper.body = body;
        wrapper.msgCount = 0;
        return wrapper;
    }

    function isFlooding(sender) {
        if (!sender || sender === "[ Server ]") return false;
        const now = Date.now();
        if (!userFloodLog[sender]) userFloodLog[sender] = [];
        userFloodLog[sender] = userFloodLog[sender].filter(ts => now - ts < FLOOD_TIME_WINDOW);
        userFloodLog[sender].push(now);
        return userFloodLog[sender].length > FLOOD_THRESHOLD;
    }

    w.on("chatMod", function(e) {
        const loc = e.location || "page";
        const chatField = document.getElementById(loc === "page" ? "page_chatfield" : "global_chatfield");
        if (!chatField) return;

        const isServer = (e.id === 0 || e.nickname === "[ Server ]");
        const isAnon = !isServer && (e.type?.includes("anon") || (e.dataObj && !e.dataObj.registered));

        let isDuplicate = false;
        if (!isServer && e.message === lastMsgTracker[loc].text && e.nickname === lastMsgTracker[loc].sender) {
            lastMsgTracker[loc].count++;
            if (lastMsgTracker[loc].count >= REPEAT_THRESHOLD) isDuplicate = true;
        } else {
            lastMsgTracker[loc].text = e.message;
            lastMsgTracker[loc].sender = e.nickname;
            lastMsgTracker[loc].count = 1;
        }

        const isFlood = isFlooding(e.nickname);
        const shouldHide = isAnon || isDuplicate || isFlood;

        if (shouldHide) {
            e.hide = true;

            if (!activeSpamBlocks[loc]) {
                activeSpamBlocks[loc] = createSpamWrapper(chatField, loc);
            }

            const container = activeSpamBlocks[loc];

            buildChatElement(
                container.body, e.id, e.type, e.nickname, e.message,
                e.realUsername, e.op, e.admin, e.staff, e.color, e.date, e.dataObj
            );

            container.msgCount++;

            const isHidden = container.body.style.display === "none";
            container.header.innerHTML = `${isHidden ? "[+]" : "[-]"} Show filtered spam (${container.msgCount} messages)`;

            const isAtBottom = chatField.scrollHeight - chatField.clientHeight <= chatField.scrollTop + 60;
            if (isAtBottom) chatField.scrollTop = chatField.scrollHeight;

        } else {
            activeSpamBlocks[loc] = null;
        }
    });
})();