// --- static/tree-ui.js ---

import { SESSION_USER_ID, currentEditElementId } from './edit-mode.js';

// ==========================================
// 🌟 效能終極優化：全域快取與延遲渲染 (Lazy Rendering)
// ==========================================
export const folderDataCache = {};
export const filterFolderCache = {};

// 🧹 [修復 Leak] 徹底清空樹狀圖快取，釋放記憶體
export function clearTreeCache() {
    for (let key in folderDataCache) delete folderDataCache[key];
    for (let key in filterFolderCache) delete filterFolderCache[key];
}

// 魔法函數：當資料夾被點擊展開時，才將 HTML 渲染進去
window.lazyLoadFolder = function(elementId, isFilter = false) {
    const detailsEl = document.getElementById(`details-${elementId}`);
    // 如果已經載入過，就不重複渲染
    if (!detailsEl || detailsEl.dataset.loaded === 'true') return;

    // 從 dataset 讀取當初存下來的屬性
    const currentPath = detailsEl.dataset.path;
    const isCommandGroup = detailsEl.dataset.isGroup === 'true';
    const mode = detailsEl.dataset.mode;

    const contentDiv = document.getElementById(isFilter ? `filter-content-${elementId}` : `content-${elementId}`);
    const cache = isFilter ? filterFolderCache[elementId] : folderDataCache[elementId];

    if (contentDiv && cache) {
        // 🌟 統一渲染作法：單點展開也套用非同步渲染保護
        contentDiv.innerHTML = `<span style="color: #f39c12; font-size: 13px; font-weight: bold; margin-left: 5px;">⏳ 載入中...</span>`;
        document.body.style.cursor = 'wait';

        setTimeout(() => {
            if (isFilter) {
                contentDiv.innerHTML = buildRealFilterTree(cache.data, currentPath, cache.hiddenKeys, isCommandGroup, mode);
            } else {
                contentDiv.innerHTML = buildTree(cache, currentPath, isCommandGroup, mode);
            }
            detailsEl.dataset.loaded = 'true'; // 標記為已載入
            document.body.style.cursor = 'default';
        }, 10);
    }
};

// ==========================================
// 🌟 輔助函數：全部展開與全部收合 (支援延遲渲染)
// ==========================================
export function expandAll(elementId) {
    const details = document.getElementById(`details-${elementId}`);
    if (!details) return;

    const isFilter = details.id.includes('filter-');
    const cache = isFilter ? filterFolderCache[elementId] : folderDataCache[elementId];
    if (!cache) return;

    // 🌟 讓滑鼠變成讀取狀態，給予使用者即時回饋
    document.body.style.cursor = 'wait';
    const contentDiv = document.getElementById(isFilter ? `filter-content-${elementId}` : `content-${elementId}`);
    
    if (contentDiv) {
        contentDiv.innerHTML = `<span style="color: #f39c12; font-weight: bold; font-size: 13px;">⏳ 正在極速展開中，請稍候...</span>`;
    }

    // 🌟 使用 setTimeout 讓出一個 Frame，讓瀏覽器能渲染出「讀取中」的文字與滑鼠狀態
    setTimeout(() => {
        const currentPath = details.dataset.path;
        const isCommandGroup = details.dataset.isGroup === 'true';
        const mode = details.dataset.mode;

        // 🚀 核心魔法：在記憶體中一次性遞迴生成所有子節點的 HTML 字串 (傳入 forceExpand = true)
        let fullHtml = '';
        if (isFilter) {
            fullHtml = buildRealFilterTree(cache.data, currentPath, cache.hiddenKeys, isCommandGroup, mode, true);
        } else {
            fullHtml = buildTree(cache, currentPath, isCommandGroup, mode, true);
        }

        // 🚀 終極效能：只執行 1 次 DOM 寫入！
        if (contentDiv) contentDiv.innerHTML = fullHtml;
        
        details.dataset.loaded = 'true';
        details.open = true;
        
        const iconClosed = details.querySelector('.icon-closed');
        const iconOpen = details.querySelector('.icon-open');
        if (iconClosed) iconClosed.style.display = 'none';
        if (iconOpen) iconOpen.style.display = 'inline-block';

        document.body.style.cursor = 'default';
    }, 20);
}

export function collapseAll(elementId) {
    const details = document.getElementById(`details-${elementId}`);
    if (details) {
        // 🌟 效能優化：只尋找目前是 open 狀態的 details 進行關閉，減少 DOM 操作
        const openSubDetails = details.querySelectorAll('details[open]');
        openSubDetails.forEach(d => {
            d.open = false;
            const iconClosed = d.querySelector('.icon-closed');
            const iconOpen = d.querySelector('.icon-open');
            if (iconClosed) iconClosed.style.display = 'inline-block';
            if (iconOpen) iconOpen.style.display = 'none';
        }); 
        details.open = false; 
        
        const mainIconClosed = details.querySelector('.icon-closed');
        const mainIconOpen = details.querySelector('.icon-open');
        if (mainIconClosed) mainIconClosed.style.display = 'inline-block';
        if (mainIconOpen) mainIconOpen.style.display = 'none';
    }
}

// ==========================================
// 🌟 核心函數：生成完整設備配置樹狀圖 (Lazy 版)
// ==========================================
// 🌟 修改函數宣告，加入 renderAll 參數
export function buildTree(node, path = '', isParentCommandGroup = false, mode = 'running', forceExpand = false, renderAll = false) {
    const htmlParts = [];
    if (!node || typeof node !== 'object') return htmlParts.join('');

    const svgFolderClosed = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#f1c40f"><path d="M10 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2h-8l-2-2z"/></svg>`;
    const svgFolderOpen = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#f1c40f"><path d="M19 8H8.99C8.04 8 7.19 8.59 6.81 9.46L2.81 18.55C2.62 18.98 2.94 19.5 3.41 19.5H16.99C17.94 19.5 18.79 18.91 19.17 18.04L23.17 8.95C23.36 8.52 23.04 8 22.57 8H19zM4 4c-1.1 0-2 .9-2 2v10.59l3.09-7.04C5.58 8.36 6.27 8 7.01 8H19v-2c0-1.1-.9-2-2-2h-7l-2-2H4c-1.1 0-2 .9-2 2v12z"/></svg>`;
    const svgGroupClosed = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#95a5a6"><path d="M4 10.5c-.83 0-1.5.67-1.5 1.5s.67 1.5 1.5 1.5 1.5-.67 1.5-1.5-.67-1.5-1.5-1.5zm0-6c-.83 0-1.5.67-1.5 1.5S3.17 7.5 4 7.5 5.5 6.83 5.5 6 4.83 4.5 4 4.5zm0 12c-.83 0-1.5.68-1.5 1.5s.68 1.5 1.5 1.5 1.5-.68 1.5-1.5-.67-1.5-1.5-1.5zM7 19h14v-2H7v2zm0-6h14v-2H7v2zm0-8v2h14V5H7z"/></svg>`;
    const svgGroupOpen = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#3498db"><path d="M4 10.5c-.83 0-1.5.67-1.5 1.5s.67 1.5 1.5 1.5 1.5-.67 1.5-1.5-.67-1.5-1.5-1.5zm0-6c-.83 0-1.5.67-1.5 1.5S3.17 7.5 4 7.5 5.5 6.83 5.5 6 4.83 4.5 4 4.5zm0 12c-.83 0-1.5.68-1.5 1.5s.68 1.5 1.5 1.5 1.5-.68 1.5-1.5-.67-1.5-1.5-1.5zM7 19h14v-2H7v2zm0-6h14v-2H7v2zm0-8v2h14V5H7z"/></svg>`;
    const expandAllIcon = `<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="7 13 12 18 17 13"></polyline><polyline points="7 6 12 11 17 6"></polyline></svg>`;
    const collapseAllIcon = `<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="17 11 12 6 7 11"></polyline><polyline points="17 18 12 13 7 18"></polyline></svg>`;
    const svgLeaf = `<svg width="16" height="16" viewBox="0 0 24 24" fill="#bdc3c7"><path d="M6 2c-1.1 0-1.99.9-1.99 2L4 20c0 1.1.89 2 1.99 2H18c1.1 0 2-.9 2-2V8l-6-6H6zm7 7V3.5L18.5 9H13z"/></svg>`;
    const svgDisabled = `<svg width="16" height="16" viewBox="0 0 24 24" fill="#e74c3c"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.42 0-8-3.58-8-8 0-1.85.63-3.55 1.69-4.9L16.9 18.31C15.55 19.37 13.85 20 12 20zm6.31-3.1L7.1 5.69C8.45 4.63 10.15 4 12 4c4.42 0 8 3.58 8 8 0 1.85-.63 3.55-1.69 4.9z"/></svg>`;

    for (const [key, value] of Object.entries(node)) {
        const currentPath = path ? `${path}::${key}` : key;
        let cliCommand = currentPath.replace(/::/g, ' ').replace(/\s*\[\d+\]/g, '');

        if (typeof value === 'object' && value !== null) {
            const hasNestedObject = Object.values(value).some(v => typeof v === 'object' && v !== null);
            const isCommandGroup = isParentCommandGroup || !hasNestedObject;
            const elementId = `${mode}-folder-${currentPath.replace(/[^a-zA-Z0-9]/g, '-')}`;
            const folderSuffix = isCommandGroup ? '<span style="color: #95a5a6; font-size: 0.85em; font-weight: normal; margin-left: 5px;">(指令群組)</span>' : '';

            folderDataCache[elementId] = value;

            const iconClosed = isCommandGroup ? svgGroupClosed : svgFolderClosed;
            const iconOpen = isCommandGroup ? svgGroupOpen : svgFolderOpen;

            const expandCollapseBtns = `
                <span style="margin-left: 8px; display: inline-flex; gap: 6px; align-items: center;">
                    <span onclick="event.stopPropagation(); event.preventDefault(); expandAll('${elementId}')" 
                          style="cursor: pointer; color: #95a5a6; transition: color 0.2s; display: flex; align-items: center;" 
                          onmouseover="this.style.color='#3498db'" onmouseout="this.style.color='#95a5a6'" title="展開全部子項目">
                        ${expandAllIcon}
                    </span>
                    <span onclick="event.stopPropagation(); event.preventDefault(); collapseAll('${elementId}')" 
                          style="cursor: pointer; color: #95a5a6; transition: color 0.2s; display: flex; align-items: center;" 
                          onmouseover="this.style.color='#e67e22'" onmouseout="this.style.color='#95a5a6'" title="收合全部子項目">
                        ${collapseAllIcon}
                    </span>
                </span>
            `;

            const currentHost = document.getElementById('cmtsHost')?.value.trim();
            let isLocked = false;
            let lockTitle = "鎖定並編輯此群組";
            let lockText = "✏️";
            let lockOpacity = "0.3";
            let lockPointer = "auto";

            if (currentHost && window.globalActiveLocks && window.globalActiveLocks[currentHost]) {
                const hostLocks = window.globalActiveLocks[currentHost];
                if (hostLocks[currentPath]) {
                    const lockInfo = hostLocks[currentPath];
                    if (!(lockInfo.user_id === SESSION_USER_ID && elementId === currentEditElementId)) {
                        isLocked = true; lockText = "🔒"; lockOpacity = "0.2"; lockPointer = "none";
                        lockTitle = lockInfo.user_id !== SESSION_USER_ID ? `🔒 此區塊正由 [${lockInfo.username}] 編輯中` : `🔒 您正在另一個視圖編輯此項目`;
                    }
                } else {
                    for (const [lockedPath, lockInfo] of Object.entries(hostLocks)) {
                        if (currentPath.startsWith(lockedPath + "::")) {
                            isLocked = true; lockText = "🔒"; lockOpacity = "0.2"; lockPointer = "none";
                            lockTitle = `🔒 父層級已被鎖定，無法編輯此項目`; break;
                        }
                    }
                }
            }

            // 🚀 核心魔法：如果 forceExpand 為 true，直接在記憶體中遞迴生成子節點 HTML
            const isOpenAttr = forceExpand ? 'open' : '';
            const isLoadedAttr = (forceExpand || renderAll) ? 'true' : 'false';
            const displayClosed = forceExpand ? 'none' : 'inline-block';
            const displayOpen = forceExpand ? 'inline-block' : 'none';
            
            let innerContent = '<!-- 🌟 延遲渲染 -->';
            if (forceExpand || renderAll) {
                // 🌟 遞迴呼叫時，把 renderAll 傳遞下去
                innerContent = buildTree(value, currentPath, isCommandGroup, mode, forceExpand, renderAll);
            }

            htmlParts.push(`
                <details id="details-${elementId}" class="tree-folder" style="margin-top: 4px; margin-left: 20px;" 
                         data-path="${currentPath}" data-is-group="${isCommandGroup}" data-mode="${mode}" data-loaded="${isLoadedAttr}" ${isOpenAttr}
                         ontoggle="this.querySelector('.icon-closed').style.display = this.open ? 'none' : 'inline-block'; this.querySelector('.icon-open').style.display = this.open ? 'inline-block' : 'none'; if(this.open) window.lazyLoadFolder('${elementId}', false);">
                    <summary class="tree-folder-header" 
                             title="${cliCommand}"
                             onmouseover="this.style.backgroundColor='#f1f2f6'" 
                             onmouseout="this.style.backgroundColor='transparent'" 
                             style="cursor: pointer; padding: 4px 8px; display: flex; align-items: center; outline: none; border-radius: 4px; transition: background-color 0.2s;">
                        
                        <span style="margin-right: 6px; display: inline-flex; align-items: center; width: 18px; height: 18px;">
                            <span class="icon-closed" style="display: ${displayClosed};">${iconClosed}</span>
                            <span class="icon-open" style="display: ${displayOpen};">${iconOpen}</span>
                        </span> 
                        <b style="color: #2c3e50;">${key}</b>${folderSuffix}
                        ${expandCollapseBtns}
                        
                        <div style="margin-left: auto; display: flex; align-items: center;">
                            <span class="debug-preview-btn admin-only" 
                                  onclick="event.stopPropagation(); event.preventDefault(); previewNodeCLI(this, '${currentPath}')" 
                                  style="display: none; cursor: pointer; margin-right: 8px; font-size: 14px; transition: transform 0.2s;" 
                                  title="[開發者] 預覽此節點下所有指令"
                                  onmouseover="this.style.transform='scale(1.2)'" 
                                  onmouseout="this.style.transform='scale(1)'">
                                  🔍
                            </span>
                            <span id="edit-btn-${elementId}" class="edit-btn" data-path="${currentPath}" onclick="event.stopPropagation(); event.preventDefault(); startEditFolder('${currentPath}', '${elementId}')" 
                                  style="cursor: pointer; font-size: 14px; opacity: ${lockOpacity}; pointer-events: ${lockPointer}; transition: opacity 0.2s;" 
                                  onmouseover="this.style.opacity=1" onmouseout="this.style.opacity=${lockOpacity}" title="${lockTitle}">
                                ${lockText}
                            </span>
                            <span id="actions-${elementId}" style="display:none; margin-left: 10px;">
                                <button onclick="event.stopPropagation(); event.preventDefault(); previewFolderCLI('${currentPath}', '${elementId}')" style="background-color: #27ae60; color: white; border: none; padding: 2px 8px; border-radius: 4px; cursor: pointer; font-size: 12px;">✅ 預覽指令</button>
                                <button onclick="event.stopPropagation(); event.preventDefault(); cancelEditFolder('${currentPath}', '${elementId}')" style="background-color: #e74c3c; color: white; border: none; padding: 2px 8px; border-radius: 4px; cursor: pointer; font-size: 12px; margin-left: 5px;">❌ 取消</button>
                            </span>
                        </div>
                    </summary>
                    <div id="content-${elementId}" class="tree-folder-content" style="margin-left: 12px; border-left: 1px dashed #bdc3c7; padding-left: 12px;">
                        ${innerContent}
                    </div>
                </details>
            `);
        } else {
            const isVirtualIndex = /^\[\d+\]$/.test(key);
            const isNoCommand = (key === 'no'); 
            const safeValue = (value === null ? '' : value).toString().replace(/"/g, "&quot;");
            const elementId = `${mode}-leaf-${currentPath.replace(/[^a-zA-Z0-9]/g, '-')}`;

            if (isNoCommand) {
                let baseCmd = cliCommand.replace(/(^|\s)no$/, '').trim();
                cliCommand = baseCmd ? `${baseCmd} no ${safeValue}` : `no ${safeValue}`;
            }

            const iconHtml = (icon) => `<span style="margin-right: 6px; display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px;">${icon}</span>`;
            const valueStyle = `color: #16a085; margin-left: 5px; font-family: Courier New, monospace; display: inline-block; transform: translateY(1.5px);`;

            const currentHost = document.getElementById('cmtsHost')?.value.trim();
            let isLocked = false;
            let lockTitle = "鎖定並編輯此項目";
            let lockText = "✏️";
            let lockOpacity = "0.3";
            let lockPointer = "auto";

            if (currentHost && window.globalActiveLocks && window.globalActiveLocks[currentHost]) {
                const hostLocks = window.globalActiveLocks[currentHost];
                if (hostLocks[currentPath]) {
                    const lockInfo = hostLocks[currentPath];
                    if (!(lockInfo.user_id === SESSION_USER_ID && elementId === currentEditElementId)) {
                        isLocked = true; lockText = "🔒"; lockOpacity = "0.2"; lockPointer = "none";
                        lockTitle = lockInfo.user_id !== SESSION_USER_ID ? `🔒 此區塊正由 [${lockInfo.username}] 編輯中` : `🔒 您正在另一個視圖編輯此項目`;
                    }
                } else {
                    for (const [lockedPath, lockInfo] of Object.entries(hostLocks)) {
                        if (currentPath.startsWith(lockedPath + "::")) {
                            isLocked = true; lockText = "🔒"; lockOpacity = "0.2"; lockPointer = "none";
                            lockTitle = `🔒 父層級已被鎖定，無法編輯此項目`; break;
                        }
                    }
                }
            }
            
            let displayContent = '';

            if (isVirtualIndex) {
                displayContent = `
                    ${iconHtml(svgLeaf)}
                    <span class="leaf-container" id="container-${elementId}" data-path="${currentPath}" data-original="${safeValue}" style="display: inline-flex; align-items: center; min-height: 24px;">
                        <span class="leaf-value" style="${valueStyle}">${safeValue}</span>
                    </span>
                `;
           } else if (isNoCommand) {
                displayContent = `
                    <span id="display-wrapper-${elementId}" style="display: inline-flex; align-items: center;">
                        ${iconHtml(svgDisabled)} 
                        <b style="color: #e74c3c;">no:</b> 
                        <span class="leaf-container" id="container-${elementId}" data-path="${currentPath}" data-original="${safeValue}" style="display: inline-flex; align-items: center; min-height: 24px;">
                            <span class="leaf-value" style="color: #7f8c8d; margin-left: 5px; font-family: Courier New, monospace; display: inline-block; transform: translateY(1.5px);">${safeValue}</span>
                        </span>
                    </span>
                `;
            } else {
                displayContent = `
                    ${iconHtml(svgLeaf)} <b>${key}</b>: 
                    <span class="leaf-container" id="container-${elementId}" data-path="${currentPath}" data-original="${safeValue}" style="display: inline-flex; align-items: center; min-height: 24px;">
                        <span class="leaf-value" style="${valueStyle}">${safeValue}</span>
                    </span>
                `;
            }

            htmlParts.push(`
                <div class="tree-leaf-node" 
                     title="${cliCommand}"
                     onmouseover="this.style.backgroundColor='#f1f2f6'" 
                     onmouseout="this.style.backgroundColor='transparent'" 
                     style="padding: 4px 8px; color: #34495e; margin-left: 20px; border-left: 1px solid #ecf0f1; display: flex; align-items: center; border-radius: 4px; transition: background-color 0.2s;">
                    ${displayContent}
                    
                    <div style="margin-left: auto; display: flex; align-items: center;">
                        <span class="debug-preview-btn admin-only" 
                              onclick="event.stopPropagation(); event.preventDefault(); previewNodeCLI(this, '${currentPath}')" 
                              style="display: none; cursor: pointer; margin-right: 8px; font-size: 14px; transition: transform 0.2s;" 
                              title="[開發者] 預覽此節點下所有指令"
                              onmouseover="this.style.transform='scale(1.2)'" 
                              onmouseout="this.style.transform='scale(1)'">
                              🔍
                        </span>
                        <span id="edit-btn-${elementId}" class="edit-btn" data-path="${currentPath}" onclick="event.stopPropagation(); event.preventDefault(); startEditLeaf('${currentPath}', '${elementId}')" 
                              style="cursor: pointer; font-size: 14px; opacity: ${lockOpacity}; pointer-events: ${lockPointer}; transition: opacity 0.2s;" 
                              onmouseover="this.style.opacity=1" onmouseout="this.style.opacity=${lockOpacity}" title="${lockTitle}">
                            ${lockText}
                        </span>
                        <span id="actions-${elementId}" style="display:none; margin-left: 10px;">
                            <button onclick="event.stopPropagation(); event.preventDefault(); previewLeafCLI('${currentPath}', '${elementId}')" style="background-color: #27ae60; color: white; border: none; padding: 2px 8px; border-radius: 4px; cursor: pointer; font-size: 12px;">✅ 預覽指令</button>
                            <button onclick="event.stopPropagation(); event.preventDefault(); cancelEditLeaf('${currentPath}', '${elementId}')" style="background-color: #e74c3c; color: white; border: none; padding: 2px 8px; border-radius: 4px; cursor: pointer; font-size: 12px; margin-left: 5px;">❌ 取消</button>
                        </span>
                    </div>
                </div>
            `);
        }
    }
    return htmlParts.join('');
}

// ==========================================
// 🌟 核心函數：生成系統設定的過濾樹狀圖 (Lazy 版)
// ==========================================
// 🌟 新增 forceExpand 參數，預設為 false
export function buildRealFilterTree(data, parentPath = '', hiddenKeys = [], isParentCommandGroup = false, mode = 'running', forceExpand = false) {
    if (typeof data !== 'object' || data === null) return '';

    const htmlParts = [];
    htmlParts.push(`<div style="margin-left: ${parentPath ? '24px' : '0'};">`);
    
    const svgFolderClosed = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#f1c40f"><path d="M10 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2h-8l-2-2z"/></svg>`;
    const svgFolderOpen = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#f1c40f"><path d="M19 8H8.99C8.04 8 7.19 8.59 6.81 9.46L2.81 18.55C2.62 18.98 2.94 19.5 3.41 19.5H16.99C17.94 19.5 18.79 18.91 19.17 18.04L23.17 8.95C23.36 8.52 23.04 8 22.57 8H19zM4 4c-1.1 0-2 .9-2 2v10.59l3.09-7.04C5.58 8.36 6.27 8 7.01 8H19v-2c0-1.1-.9-2-2-2h-7l-2-2H4c-1.1 0-2 .9-2 2v12z"/></svg>`;
    const svgGroupClosed = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#95a5a6"><path d="M4 10.5c-.83 0-1.5.67-1.5 1.5s.67 1.5 1.5 1.5 1.5-.67 1.5-1.5-.67-1.5-1.5-1.5zm0-6c-.83 0-1.5.67-1.5 1.5S3.17 7.5 4 7.5 5.5 6.83 5.5 6 4.83 4.5 4 4.5zm0 12c-.83 0-1.5.68-1.5 1.5s.68 1.5 1.5 1.5 1.5-.68 1.5-1.5-.67-1.5-1.5-1.5zM7 19h14v-2H7v2zm0-6h14v-2H7v2zm0-8v2h14V5H7z"/></svg>`;
    const svgGroupOpen = `<svg width="18" height="18" viewBox="0 0 24 24" fill="#3498db"><path d="M4 10.5c-.83 0-1.5.67-1.5 1.5s.67 1.5 1.5 1.5 1.5-.67 1.5-1.5-.67-1.5-1.5-1.5zm0-6c-.83 0-1.5.67-1.5 1.5S3.17 7.5 4 7.5 5.5 6.83 5.5 6 4.83 4.5 4 4.5zm0 12c-.83 0-1.5.68-1.5 1.5s.68 1.5 1.5 1.5 1.5-.68 1.5-1.5-.67-1.5-1.5-1.5zM7 19h14v-2H7v2zm0-6h14v-2H7v2zm0-8v2h14V5H7z"/></svg>`;
    const svgLeaf = `<svg width="16" height="16" viewBox="0 0 24 24" fill="#bdc3c7"><path d="M6 2c-1.1 0-1.99.9-1.99 2L4 20c0 1.1.89 2 1.99 2H18c1.1 0 2-.9 2-2V8l-6-6H6zm7 7V3.5L18.5 9H13z"/></svg>`;
    const expandAllIcon = `<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="7 13 12 18 17 13"></polyline><polyline points="7 6 12 11 17 6"></polyline></svg>`;
    const collapseAllIcon = `<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="17 11 12 6 7 11"></polyline><polyline points="17 18 12 13 7 18"></polyline></svg>`;

    for (const key in data) {
        const value = data[key];
        const currentPath = parentPath ? `${parentPath}::${key}` : key;
        const isChecked = hiddenKeys.includes(currentPath) ? "checked" : "";
        
        let cliCommand = currentPath.replace(/::/g, ' ').replace(/\s*\[\d+\]/g, '');

        const isFolder = typeof value === 'object' && value !== null && Object.keys(value).length > 0;
        const onChangeEvent = isFolder ? 'toggleChildCheckboxes(this)' : 'updateParentCheckboxState(this)';
        const checkboxHtml = `<input type="checkbox" value="${currentPath}" class="filter-checkbox" ${isChecked} onclick="event.stopPropagation();" onchange="${onChangeEvent}" style="margin-right: 8px; cursor: pointer; width: 14px; height: 14px; flex-shrink: 0;">`;

        if (isFolder) {
            const hasNestedObject = Object.values(value).some(v => typeof v === 'object' && v !== null);
            const isCommandGroup = isParentCommandGroup || !hasNestedObject;
            const elementId = `filter-${mode}-folder-${currentPath.replace(/[^a-zA-Z0-9]/g, '-')}`;

            filterFolderCache[elementId] = { data: value, hiddenKeys: hiddenKeys };

            const iconClosed = isCommandGroup ? svgGroupClosed : svgFolderClosed;
            const iconOpen = isCommandGroup ? svgGroupOpen : svgFolderOpen;
            const folderSuffix = isCommandGroup ? `<span style="color: #95a5a6; font-size: 0.85em; font-weight: normal; margin-left: 5px;">(指令群組)</span>` : '';

            const expandCollapseBtns = `
                <span style="margin-left: 8px; display: inline-flex; gap: 6px; align-items: center;">
                    <span onclick="event.stopPropagation(); event.preventDefault(); expandAll('${elementId}')" 
                          style="cursor: pointer; color: #95a5a6; transition: color 0.2s; display: flex; align-items: center;" 
                          onmouseover="this.style.color='#3498db'" onmouseout="this.style.color='#95a5a6'" title="展開全部子項目">
                        ${expandAllIcon}
                    </span>
                    <span onclick="event.stopPropagation(); event.preventDefault(); collapseAll('${elementId}')" 
                          style="cursor: pointer; color: #95a5a6; transition: color 0.2s; display: flex; align-items: center;" 
                          onmouseover="this.style.color='#e67e22'" onmouseout="this.style.color='#95a5a6'" title="收合全部子項目">
                        ${collapseAllIcon}
                    </span>
                </span>
            `;

            // 🚀 核心魔法：如果 forceExpand 為 true，直接在記憶體中遞迴生成子節點 HTML
            const isOpenAttr = forceExpand ? 'open' : '';
            const isLoadedAttr = forceExpand ? 'true' : 'false';
            const displayClosed = forceExpand ? 'none' : 'inline-block';
            const displayOpen = forceExpand ? 'inline-block' : 'none';
            
            let innerContent = '<!-- 🌟 延遲渲染 -->';
            if (forceExpand) {
                innerContent = buildRealFilterTree(value, currentPath, hiddenKeys, isCommandGroup, mode, true);
            }

            htmlParts.push(`
                <details id="details-${elementId}" class="tree-folder" 
                         data-path="${currentPath}" data-is-group="${isCommandGroup}" data-mode="${mode}" data-loaded="${isLoadedAttr}" ${isOpenAttr}
                         ontoggle="this.querySelector('.icon-closed').style.display = this.open ? 'none' : 'inline-block'; this.querySelector('.icon-open').style.display = this.open ? 'inline-block' : 'none'; if(this.open) window.lazyLoadFolder('${elementId}', true);">
                    <summary class="tree-node-header" title="${cliCommand}" style="font-weight: bold; color: #2c3e50; margin-top: 4px; list-style: none; display: flex; align-items: center; cursor: pointer; outline: none; padding: 4px 0;">
                        <style>#details-${elementId} > summary::-webkit-details-marker { display: none; }</style>
                        ${checkboxHtml}
                        <span style="margin-right: 6px; display: inline-flex; align-items: center; width: 18px; height: 18px;">
                            <span class="icon-closed" style="display: ${displayClosed};">${iconClosed}</span>
                            <span class="icon-open" style="display: ${displayOpen};">${iconOpen}</span>
                        </span>
                        <span>${key}${folderSuffix}</span>
                        ${expandCollapseBtns}
                    </summary>
                    <div id="filter-content-${elementId}" class="filter-children-container" style="border-left: 1px dashed #bdc3c7; margin-left: 7px; padding-left: 16px;">
                        ${innerContent}
                    </div>
                </details>
            `);
        } else {
            const isVirtualIndex = /^\[\d+\]$/.test(key);
            let displayName = isVirtualIndex ? `<span style="color: #95a5a6; font-weight: normal;">項目 ${key}</span>` : `<b>${key}</b>`;
            const safeValue = (value === null ? '' : value).toString().replace(/"/g, "&quot;");
            
            const isNoCommand = (key === 'no');

            let valueHtml = `<span style="color: #16a085; font-family: Courier New, monospace; display: inline-block; transform: translateY(1.5px);">${safeValue}</span>`;
            let colonHtml = `:`;
            let currentIcon = `<svg width="16" height="16" viewBox="0 0 24 24" fill="#bdc3c7"><path d="M6 2c-1.1 0-1.99.9-1.99 2L4 20c0 1.1.89 2 1.99 2H18c1.1 0 2-.9 2-2V8l-6-6H6zm7 7V3.5L18.5 9H13z"/></svg>`;

            if (isNoCommand) {
                let baseCmd = cliCommand.replace(/(^|\s)no$/, '').trim();
                cliCommand = baseCmd ? `${baseCmd} no ${safeValue}` : `no ${safeValue}`;
                
                displayName = `<b style="color: #e74c3c;">no</b>`;
                colonHtml = `:`; 
                valueHtml = `<span style="color: #7f8c8d; margin-left: 5px; font-family: Courier New, monospace; display: inline-block; transform: translateY(1.5px);">${safeValue}</span>`;
                currentIcon = `<svg width="16" height="16" viewBox="0 0 24 24" fill="#e74c3c"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.42 0-8-3.58-8-8 0-1.85.63-3.55 1.69-4.9L16.9 18.31C15.55 19.37 13.85 20 12 20zm6.31-3.1L7.1 5.69C8.45 4.63 10.15 4 12 4c4.42 0 8 3.58 8 8 0 1.85-.63 3.55-1.69 4.9z"/></svg>`;
            }

            htmlParts.push(`
                <div class="tree-leaf-node"
                     onmouseover="this.style.backgroundColor='#f1f2f6'" 
                     onmouseout="this.style.backgroundColor='transparent'" 
                     style="padding: 2px 0; color: #34495e; display: flex; align-items: center; margin-top: 2px; border-radius: 4px; transition: background-color 0.2s;"
                     title="${cliCommand}">
                    ${checkboxHtml}
                    <span style="margin-right: 6px; display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; flex-shrink: 0;">
                        ${currentIcon}
                    </span>
                    <span style="margin-right: 5px;">${displayName}${colonHtml}</span>
                    ${valueHtml}
                </div>
            `);
        }
    }
    htmlParts.push('</div>');
    return htmlParts.join('');
}

// ==========================================
// 🌟 輔助函數：強制預先渲染資料夾 HTML (供編輯模式使用)
// ==========================================
window.forceRenderFolderHTML = function(elementId) {
    const detailsEl = document.getElementById(`details-${elementId}`);
    const contentDiv = document.getElementById(`content-${elementId}`);
    const cache = folderDataCache[elementId];

    if (detailsEl && contentDiv && cache && detailsEl.dataset.loaded !== 'true') {
        const currentPath = detailsEl.dataset.path;
        const isCommandGroup = detailsEl.dataset.isGroup === 'true';
        const mode = detailsEl.dataset.mode;

        // 重新渲染，傳入 renderAll = true (生成 HTML 但不展開)
        contentDiv.innerHTML = buildTree(cache, currentPath, isCommandGroup, mode, false, true);
        detailsEl.dataset.loaded = 'true';
    }
};