LogVisualizer Visual Unit Filter

Auto-detect units, toggle-select, color buttons visually
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// ==UserScript==
// @name         LogVisualizer Visual Unit Filter
// @namespace    logvisualizer
// @version      6.0
// @description  Auto-detect units, toggle-select, color buttons visually
// @match        https://www.logvisualizer.app/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    let panel;
    let knownUnits = new Set();
    let activeUnits = new Set(); // visual state

    function createPanel() {
        panel = document.createElement("div");
        panel.style.cssText = `
            position: fixed;
            top: 80px;
            right: 20px;
            z-index: 999999;
            background: #0b0b0b;
            border: 1px solid #333;
            border-radius: 10px;
            padding: 10px;
            font-family: monospace;
            font-size: 12px;
            color: #fff;
            box-shadow: 0 0 15px rgba(0,0,0,.7);
            min-width: 160px;
            max-height: 75vh;
            overflow-y: auto;
        `;

        panel.innerHTML = `
            <div style="text-align:center;font-weight:bold;margin-bottom:8px;">
                Unit Filter
            </div>
            <div id="unit-buttons"></div>
        `;

        document.body.appendChild(panel);
    }

    function addUnitButton(unit) {
        const container = document.getElementById("unit-buttons");
        if ([...container.querySelectorAll("button")].some(b => b.dataset.unit === unit)) return;

        const btn = document.createElement("button");
        btn.textContent = unit;
        btn.dataset.unit = unit;

        btn.style.cssText = `
            display:block;
            width:100%;
            margin:5px 0;
            padding:6px;
            background:#151515;
            color:#ddd;
            border:1px solid #333;
            border-radius:6px;
            cursor:pointer;
            transition: all 0.15s ease;
        `;

        btn.onclick = () => toggleUnit(unit, btn);

        container.appendChild(btn);
    }

    function toggleUnit(unit, btn) {
        const labels = document.querySelectorAll("li.group label");

        // toggle visual state
        if (activeUnits.has(unit)) {
            activeUnits.delete(unit);
            setButtonInactive(btn);
        } else {
            activeUnits.add(unit);
            setButtonActive(btn);
        }

        // toggle actual checkboxes
        labels.forEach(label => {
            const unitSpan = label.querySelector("span.text-neutral-400, span.dark\\:text-neutral-600");
            if (!unitSpan) return;

            if (unitSpan.textContent.trim() === unit) {
                const checkbox = label.querySelector('button[role="checkbox"]');
                if (checkbox) checkbox.click();
            }
        });
    }

    function setButtonActive(btn) {
        btn.style.background = "#1f2937";   // dark blue
        btn.style.border = "1px solid #3b82f6";
        btn.style.color = "#93c5fd";
        btn.style.boxShadow = "0 0 8px rgba(59,130,246,0.6)";
    }

    function setButtonInactive(btn) {
        btn.style.background = "#151515";
        btn.style.border = "1px solid #333";
        btn.style.color = "#ddd";
        btn.style.boxShadow = "none";
    }

    function scanUnits() {
        const spans = document.querySelectorAll(
            "li.group span.text-neutral-400, li.group span.dark\\:text-neutral-600"
        );

        spans.forEach(span => {
            const unit = span.textContent.trim();
            if (!unit.startsWith("[") || !unit.endsWith("]")) return;

            if (!knownUnits.has(unit)) {
                knownUnits.add(unit);
                addUnitButton(unit);
            }
        });
    }

    function init() {
        createPanel();
        scanUnits();

        const observer = new MutationObserver(() => scanUnits());
        observer.observe(document.body, { childList: true, subtree: true });
    }

    const wait = setInterval(() => {
        if (document.querySelector("li.group")) {
            clearInterval(wait);
            init();
        }
    }, 300);

})();