// Idea House JavaScript - 处理数据字段选择和Coze API处理

// 全局变量
let dataFields = [];
let filteredDataFields = [];
let selectedFields = new Map(); // 字段ID -> 描述的映射

// 筛选状态变量
let columnFilters = {
    id: '',
    description: '',
    type: '',
    coverage: { min: null, max: null },
    userCount: null,
    alphaCount: null
};
let sortColumn = null;
let sortOrder = 'asc';

// DOM加载完成后初始化
document.addEventListener('DOMContentLoaded', function() {
    // 设置事件监听器
    document.getElementById('loadDataFieldsBtn').addEventListener('click', loadDataFields);
    document.getElementById('clearSelectionBtn').addEventListener('click', clearSelection);
    document.getElementById('processFieldsBtn').addEventListener('click', processSelectedFields);

    // 设置API令牌切换按钮
    const toggleBtn = document.getElementById('toggleApiTokenBtn');
    const tokenInput = document.getElementById('cozeApiTokenInput');

    toggleBtn.addEventListener('click', function() {
        if (tokenInput.type === 'password') {
            tokenInput.type = 'text';
            toggleBtn.textContent = '隐藏';
        } else {
            tokenInput.type = 'password';
            toggleBtn.textContent = '显示';
        }
    });

    // 加载保存的配置
    loadSavedCozeConfig();

    // 设置保存配置按钮
    document.getElementById('saveCozeConfigBtn').addEventListener('click', saveCozeConfig);

    // 设置清除配置按钮
    document.getElementById('clearCozeConfigBtn').addEventListener('click', clearCozeConfig);

    // 设置筛选事件监听器
    setupFilterEventListeners();
});

// 从BRAIN API加载数据字段
async function loadDataFields() {
    const region = document.getElementById('regionInput').value;
    const delay = document.getElementById('delayInput').value;
    const universe = document.getElementById('universeInput').value;
    const datasetId = document.getElementById('datasetInput').value;

    // 显示加载状态
    document.getElementById('dataFieldsStats').textContent = '正在加载数据字段...';
    document.getElementById('tableContainer').style.display = 'none';

    try {
        // 从localStorage或cookie获取会话ID
        const sessionId = localStorage.getItem('brain_session_id');

        if (!sessionId) {
            alert('请先从主页面连接到BRAIN');
            return;
        }

        // 调用代理端点
        const params = new URLSearchParams({
            region: region,
            delay: delay,
            universe: universe,
            dataset_id: datasetId
        });

        // 记录API调用
        console.log('🚀 正在调用API获取数据字段和数据集描述');
        console.log('📋 参数:', {
            region: region,
            delay: delay,
            universe: universe,
            dataset_id: datasetId
        });

        // 并行获取数据字段和数据集描述
        const [dataFieldsResponse, descriptionResponse] = await Promise.all([
            fetch(`/idea-house/api/get-datafields-proxy?${params}`, {
                method: 'GET',
                headers: {
                    'Session-ID': sessionId
                }
            }),
            fetch(`/idea-house/api/get-dataset-description?${params}`, {
                method: 'GET',
                headers: {
                    'Session-ID': sessionId
                }
            })
        ]);

        console.log('📥 收到响应:');
        console.log('   数据字段状态:', dataFieldsResponse.status);
        console.log('   数据集描述状态:', descriptionResponse.status);

        if (!dataFieldsResponse.ok) {
            const errorData = await dataFieldsResponse.json();
            throw new Error(errorData.error || '获取数据字段失败');
        }

        dataFields = await dataFieldsResponse.json();

        // 获取数据集描述（如果可用）
        let datasetDescription = '';
        if (descriptionResponse.ok) {
            console.log('✅ 数据集描述响应正常，正在解析JSON...');
            const descriptionData = await descriptionResponse.json();
            console.log('📄 描述数据:', descriptionData);

            if (descriptionData.success) {
                datasetDescription = descriptionData.description;
                // 将其存储在全局中供后续使用
                window.currentDatasetDescription = datasetDescription;
                console.log('✅ 数据集描述已存储:', datasetDescription);
            } else {
                console.log('⚠️ 描述响应success=false');
            }
        } else {
            console.log('❌ 数据集描述响应不正常:', descriptionResponse.status);
            try {
                const errorData = await descriptionResponse.json();
                console.log('❌ 错误详情:', errorData);
            } catch (e) {
                console.log('❌ 无法解析错误响应');
            }
        }

        // 更新统计信息
        document.getElementById('dataFieldsStats').textContent = `已加载 ${dataFields.length} 个数据字段`;

        // 使用数据集描述填充表格
        populateDataFieldsTable(datasetDescription);

        // 显示表格
        document.getElementById('tableContainer').style.display = 'block';

    } catch (error) {
        console.error('加载数据字段失败:', error);
        document.getElementById('dataFieldsStats').textContent = `错误: ${error.message}`;
        alert(`加载数据字段失败: ${error.message}`);
    }
}

// 使用筛选和排序填充数据字段表格
function populateDataFieldsTable(datasetDescription) {
    console.log('📊 populateDataFieldsTable 被调用，描述:', datasetDescription);

    const tableBody = document.getElementById('dataFieldsTableBody');
    const highCoverageFilter = document.getElementById('filterHighCoverage')?.checked || false;
    const popularFilter = document.getElementById('filterPopular')?.checked || false;
    const matrixOnlyFilter = document.getElementById('filterMatrixOnly')?.checked || false;

    // 显示数据集描述（如果可用）
    if (datasetDescription) {
        console.log('🎯 显示传入的数据集描述');
        displayDatasetDescription(datasetDescription);
    } else if (window.currentDatasetDescription) {
        console.log('🎯 显示已存储的数据集描述');
        displayDatasetDescription(window.currentDatasetDescription);
    } else {
        console.log('⚠️ 无数据集描述可用');
    }

    // 应用筛选器
    filteredDataFields = dataFields.filter(field => {
        // 列特定筛选器
        // ID筛选器
        if (columnFilters.id && !field.id.toLowerCase().includes(columnFilters.id.toLowerCase())) {
            return false;
        }

        // 描述筛选器
        if (columnFilters.description && !field.description.toLowerCase().includes(columnFilters.description.toLowerCase())) {
            return false;
        }

        // 类型筛选器
        if (columnFilters.type && field.type !== columnFilters.type) {
            return false;
        }

        // 覆盖率范围筛选器
        if (columnFilters.coverage.min !== null && field.coverage * 100 < columnFilters.coverage.min) {
            return false;
        }
        if (columnFilters.coverage.max !== null && field.coverage * 100 > columnFilters.coverage.max) {
            return false;
        }

        // 用户数量筛选器
        if (columnFilters.userCount !== null && field.userCount < columnFilters.userCount) {
            return false;
        }

        // Alpha数量筛选器
        if (columnFilters.alphaCount !== null && field.alphaCount < columnFilters.alphaCount) {
            return false;
        }

        // 高覆盖率筛选器
        if (highCoverageFilter && field.coverage < 0.9) {
            return false;
        }

        // 流行度筛选器
        if (popularFilter && field.userCount < 1000) {
            return false;
        }

        // 矩阵类型筛选器
        if (matrixOnlyFilter && field.type !== 'MATRIX') {
            return false;
        }

        return true;
    });

    // 对筛选后的数据字段排序
    if (sortColumn) {
        filteredDataFields.sort((a, b) => {
            let aVal = a[sortColumn];
            let bVal = b[sortColumn];

            // 处理数值
            if (sortColumn === 'coverage' || sortColumn === 'userCount' || sortColumn === 'alphaCount') {
                aVal = Number(aVal);
                bVal = Number(bVal);
            } else {
                // 字符串比较
                aVal = String(aVal).toLowerCase();
                bVal = String(bVal).toLowerCase();
            }

            if (aVal < bVal) return sortOrder === 'asc' ? -1 : 1;
            if (aVal > bVal) return sortOrder === 'asc' ? 1 : -1;
            return 0;
        });
    }

    // 清空表格
    tableBody.innerHTML = '';

    if (filteredDataFields.length === 0) {
        tableBody.innerHTML = '<tr><td colspan="7" style="text-align: center; color: #666; padding: 40px;">未找到符合筛选条件的数据字段</td></tr>';
        updateDataFieldsStats();
        return;
    }

    // 创建表格行
    filteredDataFields.forEach(field => {
        const row = document.createElement('tr');
        row.dataset.fieldId = field.id;
        row.dataset.fieldDescription = field.description;

        if (selectedFields.has(field.id)) {
            row.classList.add('selected');
        }

        row.innerHTML = `
            <td>
                <input type="checkbox" class="field-checkbox" data-field-id="${field.id}" data-field-description="${field.description}" ${selectedFields.has(field.id) ? 'checked' : ''}>
            </td>
            <td><span class="data-field-id">${field.id}</span></td>
            <td><span class="data-field-description">${field.description}</span></td>
            <td><span class="data-field-type">${field.type || 'N/A'}</span></td>
            <td><span class="data-field-coverage">${field.coverage ? (field.coverage * 100).toFixed(1) + '%' : 'N/A'}</span></td>
            <td><span class="data-field-count">${field.userCount ? field.userCount.toLocaleString() : 'N/A'}</span></td>
            <td><span class="data-field-count">${field.alphaCount ? field.alphaCount.toLocaleString() : 'N/A'}</span></td>
        `;

        // 为行添加点击处理程序
        row.addEventListener('click', function(e) {
            if (e.target.type !== 'checkbox') {
                const checkbox = row.querySelector('.field-checkbox');
                checkbox.checked = !checkbox.checked;
                handleFieldSelection(checkbox);
            }
        });

        // 为复选框添加变更处理程序
        const checkbox = row.querySelector('.field-checkbox');
        checkbox.addEventListener('change', function() {
            handleFieldSelection(this);
        });

        tableBody.appendChild(row);
    });

    // 更新统计信息并填充类型筛选器
    updateDataFieldsStats();
    populateTypeFilter();
    updateSelectAllCheckbox();
}

// 处理字段选择
function handleFieldSelection(checkbox) {
    const fieldId = checkbox.dataset.fieldId;
    const fieldDescription = checkbox.dataset.fieldDescription;
    const row = checkbox.closest('tr');

    if (checkbox.checked) {
        selectedFields.set(fieldId, fieldDescription);
        row.classList.add('selected');
    } else {
        selectedFields.delete(fieldId);
        row.classList.remove('selected');
    }

    updateSelectedFieldsDisplay();
    updateDataFieldsStats();
    updateSelectAllCheckbox();
}

// 更新选中字段的显示
function updateSelectedFieldsDisplay() {
    const selectedFieldsList = document.getElementById('selectedFieldsList');
    const selectedFieldsSection = document.getElementById('selectedFieldsSection');

    if (selectedFields.size === 0) {
        selectedFieldsSection.style.display = 'none';
        return;
    }

    selectedFieldsSection.style.display = 'block';
    selectedFieldsList.innerHTML = '';

    selectedFields.forEach((description, fieldId) => {
        const fieldItem = document.createElement('div');
        fieldItem.className = 'selected-field-item';
        fieldItem.textContent = `${fieldId}: ${description}`;
        selectedFieldsList.appendChild(fieldItem);
    });
}

// 清除所有选择
function clearSelection() {
    selectedFields.clear();

    // 取消选中所有复选框并移除选中类
    document.querySelectorAll('.field-checkbox').forEach(checkbox => {
        checkbox.checked = false;
        checkbox.closest('tr').classList.remove('selected');
    });

    updateSelectedFieldsDisplay();
    updateDataFieldsStats();
    updateSelectAllCheckbox();
}

// 使用Coze API处理选中的字段
async function processSelectedFields() {
    if (selectedFields.size === 0) {
        alert('请至少选择一个字段');
        return;
    }

    // 显示加载覆盖层，包含Coze API特定消息
    const loadingOverlay = document.getElementById('loadingOverlay');
    const loadingContent = loadingOverlay.querySelector('.loading-content');
    loadingContent.innerHTML = `
        <h3>🚀 正在向Coze API发送请求...</h3>
        <p>正在通过Coze工作流处理 ${selectedFields.size} 个选中的字段</p>
        <p style="font-size: 14px; color: #666; margin-top: 10px;">
            📡 正在连接到Coze API...<br>
            ⚙️ 正在运行工作流分析...<br>
            📊 正在生成洞察...
        </p>
    `;
    loadingOverlay.style.display = 'flex';

    try {
        // 准备所需格式的数据 {"id":"description"}
        const selectedFieldsObject = {};
        selectedFields.forEach((description, fieldId) => {
            selectedFieldsObject[fieldId] = description;
        });

        // 获取Coze API配置
        const cozeApiToken = document.getElementById('cozeApiTokenInput').value;
        const workflowId = document.getElementById('workflowIdInput').value;

        // 验证输入
        if (!cozeApiToken) {
            alert('请输入Coze API令牌');
            document.getElementById('loadingOverlay').style.display = 'none';
            return;
        }

        if (!workflowId) {
            alert('请输入工作流ID');
            document.getElementById('loadingOverlay').style.display = 'none';
            return;
        }

        // 更新加载消息以显示API调用正在进行
        loadingContent.innerHTML = `
            <h3>📡 Coze API请求进行中...</h3>
            <p>工作流ID: ${workflowId}</p>
            <p>选中的字段: ${Object.keys(selectedFieldsObject).join(', ')}</p>
            <p style="font-size: 14px; color: #4caf50; margin-top: 10px;">
                ✅ API凭据已验证<br>
                🔄 正在向Coze服务器发送请求...<br>
                ⏳ 请等待响应...
            </p>
        `;

        console.log('🚀 开始Coze API请求...');
        console.log('📋 选中的字段:', selectedFieldsObject);
        console.log('🔑 使用以以下结尾的API令牌:', cozeApiToken.slice(-10));
        console.log('⚙️ 工作流ID:', workflowId);

        // 调用处理端点
        const response = await fetch('/idea-house/api/process-fields', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                selected_fields: selectedFieldsObject,
                coze_api_token: cozeApiToken,
                workflow_id: workflowId,
                dataset_description: window.currentDatasetDescription || ''
            })
        });

        console.log('📡 收到服务器响应');

        const result = await response.json();

        if (!response.ok) {
            console.error('❌ Coze API请求失败:', result.error);
            throw new Error(result.error || '处理字段失败');
        }

        console.log('✅ Coze API请求成功!');
        console.log('📊 结果:', result);

        // 更新加载消息以显示成功
        loadingContent.innerHTML = `
            <h3>✅ 收到Coze API响应!</h3>
            <p style="color: #4caf50;">已成功通过工作流处理</p>
            <p style="font-size: 14px; margin-top: 10px;">
                📥 收到来自Coze的响应<br>
                🎉 正在格式化结果...
            </p>
        `;

        // 短暂延迟以显示成功消息
        await new Promise(resolve => setTimeout(resolve, 1000));

        // 显示结果
        displayResults(result);

    } catch (error) {
        console.error('💥 通过Coze API处理字段失败:', error);
        alert(`通过Coze API处理字段失败: ${error.message}`);
    } finally {
        // 隐藏加载覆盖层
        document.getElementById('loadingOverlay').style.display = 'none';

        // 为下次使用重置加载内容
        loadingContent.innerHTML = `
            <h3>处理中...</h3>
            <p>请等待我们分析您选中的字段...</p>
        `;
    }
}

// 以markdown格式显示结果
function displayResults(result) {
    const resultsSection = document.getElementById('resultsSection');
    const resultsContent = document.getElementById('resultsContent');

    // 显示结果部分
    resultsSection.style.display = 'block';

    // 将结果格式化为markdown - 简化版本
    let markdown = '# 分析结果\n\n';

    // 添加选中字段部分
    markdown += '## 选中的字段\n\n';
    Object.entries(result.selected_fields).forEach(([fieldId, description]) => {
        markdown += `- **${fieldId}**: ${description}\n`;
    });
    markdown += '\n';

    // 添加输出部分 - 仅显示实际分析输出
    markdown += '## 分析输出\n\n';
    if (result.output) {
        // 如果输出已经是格式化文本，直接使用
        if (typeof result.output === 'string') {
            markdown += result.output;
        } else {
            // 如果是对象，尝试美观地显示
            markdown += '```json\n';
            markdown += JSON.stringify(result.output, null, 2);
            markdown += '\n```\n';
        }
    } else {
        markdown += '_无输出数据可用_';
    }

    // 将markdown渲染为HTML
    resultsContent.innerHTML = renderMarkdown(markdown);

    // 滚动到结果部分
    resultsSection.scrollIntoView({ behavior: 'smooth' });
}

// 辅助函数格式化markdown（可选增强功能）
function renderMarkdown(markdown) {
    // 这是一个改进的markdown渲染器，能更好地处理列表
    let html = markdown;

    // 首先，转义HTML以防止XSS
    html = html.replace(/&/g, '&amp;')
               .replace(/</g, '&lt;')
               .replace(/>/g, '&gt;');

    // 代码块（必须在行内代码之前）
    html = html.replace(/```([\s\S]*?)```/g, function(match, code) {
        return '<pre><code>' + code.trim() + '</code></pre>';
    });

    // 标题
    html = html.replace(/^#### (.*$)/gim, '<h4>$1</h4>');
    html = html.replace(/^### (.*$)/gim, '<h3>$1</h3>');
    html = html.replace(/^## (.*$)/gim, '<h2>$1</h2>');
    html = html.replace(/^# (.*$)/gim, '<h1>$1</h1>');

    // 粗体（必须在斜体之前）
    html = html.replace(/\*\*([^*]+)\*\*/g, '<strong>$1</strong>');

    // 斜体
    html = html.replace(/\*([^*\n]+)\*/g, '<em>$1</em>');

    // 行内代码
    html = html.replace(/`([^`]+)`/g, '<code>$1</code>');

    // 更仔细地处理列表
    // 为了更好的列表处理，分割成行
    const lines = html.split('\n');
    let inList = false;
    let processedLines = [];

    for (let i = 0; i < lines.length; i++) {
        let line = lines[i];

        // 检查行是否是列表项
        if (line.match(/^[\*\-\+] /)) {
            // 用适当的HTML替换列表标记
            line = line.replace(/^[\*\-\+] (.*)$/, '<li>$1</li>');

            // 如果不在列表中，开始一个列表
            if (!inList) {
                processedLines.push('<ul>');
                inList = true;
            }
            processedLines.push(line);
        } else if (line.match(/^\d+\. /)) {
            // 有序列表
            line = line.replace(/^\d+\. (.*)$/, '<li>$1</li>');

            // 如果不在列表中或前一个是无序列表，开始有序列表
            if (!inList || (i > 0 && lines[i-1].match(/^[\*\-\+] /))) {
                if (inList) processedLines.push('</ul>');
                processedLines.push('<ol>');
                inList = true;
            }
            processedLines.push(line);
        } else {
            // 不是列表项
            if (inList) {
                // 关闭列表
                if (i > 0 && lines[i-1].match(/^\d+\. /)) {
                    processedLines.push('</ol>');
                } else {
                    processedLines.push('</ul>');
                }
                inList = false;
            }
            processedLines.push(line);
        }
    }

    // 关闭任何剩余的列表
    if (inList) {
        if (lines[lines.length - 1].match(/^\d+\. /)) {
            processedLines.push('</ol>');
        } else {
            processedLines.push('</ul>');
        }
    }

    html = processedLines.join('\n');

    // 换行 - 将双换行符转换为段落
    html = html.replace(/\n\n/g, '</p><p>');
    html = '<p>' + html + '</p>';

    // 清理空段落
    html = html.replace(/<p>\s*<\/p>/g, '');
    html = html.replace(/<p>(<h[1-6]>)/g, '$1');
    html = html.replace(/(<\/h[1-6]>)<\/p>/g, '$1');
    html = html.replace(/<p>(<ul>|<ol>|<pre>)/g, '$1');
    html = html.replace(/(<\/ul>|<\/ol>|<\/pre>)<\/p>/g, '$1');

    // 段落内的单换行符
    html = html.replace(/\n/g, '<br>');

    return html;
}

// 将Coze配置保存到localStorage
function saveCozeConfig() {
    const cozeApiToken = document.getElementById('cozeApiTokenInput').value;
    const workflowId = document.getElementById('workflowIdInput').value;

    // 保存到localStorage
    localStorage.setItem('coze_api_token', cozeApiToken);
    localStorage.setItem('coze_workflow_id', workflowId);

    // 显示成功消息
    const messageElement = document.getElementById('saveConfigMessage');
    messageElement.style.display = 'inline';

    // 3秒后隐藏消息
    setTimeout(() => {
        messageElement.style.display = 'none';
    }, 3000);
}

// 从localStorage加载保存的Coze配置
function loadSavedCozeConfig() {
    const savedToken = localStorage.getItem('coze_api_token');
    const savedWorkflowId = localStorage.getItem('coze_workflow_id');

    if (savedToken) {
        document.getElementById('cozeApiTokenInput').value = savedToken;
    }

    if (savedWorkflowId) {
        document.getElementById('workflowIdInput').value = savedWorkflowId;
    }
}

// 清除Coze配置并重置为默认值
function clearCozeConfig() {
    // 从localStorage移除
    localStorage.removeItem('coze_api_token');
    localStorage.removeItem('coze_workflow_id');

    // 重置为默认值
    document.getElementById('cozeApiTokenInput').value = 'pat_OCxUpnmL7hCvUxEWwcKL5XwUOdoiA3eWLzwY6L8W9sQVN1saJnoMrDNyhFhEn63l';
    document.getElementById('workflowIdInput').value = '7522912027267956786';

    // 显示消息
    const messageElement = document.getElementById('saveConfigMessage');
    messageElement.textContent = '配置已重置为默认值!';
    messageElement.style.color = '#ff9800';
    messageElement.style.display = 'inline';

    // 3秒后隐藏消息
    setTimeout(() => {
        messageElement.style.display = 'none';
        messageElement.textContent = '配置已保存!';
        messageElement.style.color = '#4caf50';
    }, 3000);
}

// 设置筛选事件监听器
function setupFilterEventListeners() {
    // 快速筛选复选框
    const highCoverageFilter = document.getElementById('filterHighCoverage');
    const popularFilter = document.getElementById('filterPopular');
    const matrixOnlyFilter = document.getElementById('filterMatrixOnly');

    // 筛选操作按钮
    const selectAllBtn = document.getElementById('selectAllFiltered');
    const clearAllBtn = document.getElementById('clearAllSelected');
    const selectAllCheckbox = document.getElementById('selectAllCheckbox');

    // 设置快速筛选监听器
    if (highCoverageFilter) highCoverageFilter.onchange = () => populateDataFieldsTable();
    if (popularFilter) popularFilter.onchange = () => populateDataFieldsTable();
    if (matrixOnlyFilter) matrixOnlyFilter.onchange = () => populateDataFieldsTable();

    // 设置操作按钮监听器
    if (selectAllBtn) selectAllBtn.onclick = selectAllFilteredFields;
    if (clearAllBtn) clearAllBtn.onclick = clearAllSelectedFields;

    if (selectAllCheckbox) {
        selectAllCheckbox.onclick = (e) => {
            e.stopPropagation();
            if (selectAllCheckbox.checked) {
                selectAllFilteredFields();
            } else {
                clearAllFilteredFields();
            }
        };
    }

    // 列筛选监听器
    document.querySelectorAll('.column-filter').forEach(filter => {
        filter.addEventListener('input', (e) => {
            const column = e.target.dataset.column;
            const value = e.target.value;

            if (column === 'userCount' || column === 'alphaCount') {
                columnFilters[column] = value ? parseInt(value) : null;
            } else {
                columnFilters[column] = value;
            }

            // 添加/移除活动类
            if (value) {
                e.target.classList.add('active');
            } else {
                e.target.classList.remove('active');
            }

            populateDataFieldsTable();
        });
    });

    // 覆盖率范围筛选器
    document.querySelectorAll('.column-filter-min, .column-filter-max').forEach(filter => {
        filter.addEventListener('input', (e) => {
            const isMin = e.target.classList.contains('column-filter-min');
            const value = e.target.value;

            if (isMin) {
                columnFilters.coverage.min = value ? parseFloat(value) : null;
            } else {
                columnFilters.coverage.max = value ? parseFloat(value) : null;
            }

            // 添加/移除活动类
            const minInput = e.target.parentElement.querySelector('.column-filter-min');
            const maxInput = e.target.parentElement.querySelector('.column-filter-max');

            if (minInput.value || maxInput.value) {
                minInput.classList.add('active');
                maxInput.classList.add('active');
            } else {
                minInput.classList.remove('active');
                maxInput.classList.remove('active');
            }

            populateDataFieldsTable();
        });
    });

    // 排序按钮监听器
    document.querySelectorAll('.sort-btn').forEach(btn => {
        btn.addEventListener('click', (e) => {
            const column = e.target.dataset.column;

            // 重置所有其他排序按钮
            document.querySelectorAll('.sort-btn').forEach(b => {
                if (b !== e.target) {
                    b.classList.remove('asc', 'desc');
                    b.dataset.order = 'asc';
                }
            });

            // 切换排序顺序
            if (sortColumn === column) {
                sortOrder = sortOrder === 'asc' ? 'desc' : 'asc';
            } else {
                sortColumn = column;
                sortOrder = 'asc';
            }

            e.target.dataset.order = sortOrder;
            e.target.classList.remove('asc', 'desc');
            e.target.classList.add(sortOrder);

            populateDataFieldsTable();
        });
    });
}

// 更新数据字段统计信息
function updateDataFieldsStats() {
    const dataFieldsCountEl = document.getElementById('dataFieldsCount');
    const filteredCountEl = document.getElementById('filteredCount');
    const selectedCountEl = document.getElementById('selectedFieldsCount');

    if (dataFieldsCountEl) dataFieldsCountEl.textContent = `已加载 ${dataFields.length} 个字段`;
    if (filteredCountEl) filteredCountEl.textContent = `${filteredDataFields.length} 个已筛选`;
    if (selectedCountEl) selectedCountEl.textContent = `${selectedFields.size} 个已选中`;
}

// 填充类型筛选下拉菜单
function populateTypeFilter() {
    const typeFilter = document.getElementById('typeFilter');
    if (!typeFilter) return;

    // 从当前数据字段获取唯一类型
    const uniqueTypes = [...new Set(dataFields.map(field => field.type))].sort();

    // 清除现有选项，除了"所有类型"
    typeFilter.innerHTML = '<option value="">所有类型</option>';

    uniqueTypes.forEach(type => {
        const option = document.createElement('option');
        option.value = type;
        option.textContent = type;
        typeFilter.appendChild(option);
    });

    // 如果存在选中的值，恢复它
    if (columnFilters.type && uniqueTypes.includes(columnFilters.type)) {
        typeFilter.value = columnFilters.type;
    }
}

// 选中所有筛选后的字段
function selectAllFilteredFields() {
    filteredDataFields.forEach(field => {
        selectedFields.set(field.id, field.description);
        const row = document.querySelector(`tr[data-field-id="${field.id}"]`);
        if (row) {
            const checkbox = row.querySelector('.field-checkbox');
            checkbox.checked = true;
            row.classList.add('selected');
        }
    });

    updateSelectedFieldsDisplay();
    updateDataFieldsStats();
    updateSelectAllCheckbox();
}

// 清除所有选中的字段
function clearAllSelectedFields() {
    selectedFields.clear();

    // 更新所有复选框
    document.querySelectorAll('.field-checkbox').forEach(checkbox => {
        checkbox.checked = false;
        checkbox.closest('tr').classList.remove('selected');
    });

    updateSelectedFieldsDisplay();
    updateDataFieldsStats();
    updateSelectAllCheckbox();
}

// 仅清除筛选后的字段
function clearAllFilteredFields() {
    filteredDataFields.forEach(field => {
        selectedFields.delete(field.id);
        const row = document.querySelector(`tr[data-field-id="${field.id}"]`);
        if (row) {
            const checkbox = row.querySelector('.field-checkbox');
            checkbox.checked = false;
            row.classList.remove('selected');
        }
    });

    updateSelectedFieldsDisplay();
    updateDataFieldsStats();
    updateSelectAllCheckbox();
}

// 更新全选复选框状态
function updateSelectAllCheckbox() {
    const selectAllCheckbox = document.getElementById('selectAllCheckbox');
    if (!selectAllCheckbox) return;

    const allFilteredSelected = filteredDataFields.length > 0 &&
        filteredDataFields.every(field => selectedFields.has(field.id));

    selectAllCheckbox.checked = allFilteredSelected;
    selectAllCheckbox.indeterminate = !allFilteredSelected &&
        filteredDataFields.some(field => selectedFields.has(field.id));
}

// 显示数据集描述
function displayDatasetDescription(description) {
    console.log('🎨 显示数据集描述:', description);

    // 检查数据集描述元素是否已存在
    let descriptionElement = document.getElementById('datasetDescription');

    if (!descriptionElement) {
        console.log('📌 创建新的数据集描述元素');

        // 如果元素不存在则创建它
        const tableContainer = document.getElementById('tableContainer');
        const dataFieldsControls = tableContainer.querySelector('.data-fields-controls');

        // 为数据集描述创建一个新的div
        descriptionElement = document.createElement('div');
        descriptionElement.id = 'datasetDescription';
        descriptionElement.className = 'dataset-description';
        descriptionElement.style.cssText = `
            padding: 15px;
            background: #e8f5e9;
            border: 1px solid #4caf50;
            border-radius: 4px;
            margin-bottom: 15px;
            font-size: 14px;
            line-height: 1.5;
        `;

        // 将其插入到控件之前
        tableContainer.insertBefore(descriptionElement, dataFieldsControls);
        console.log('✅ 数据集描述元素已创建并插入');
    } else {
        console.log('📌 使用现有的数据集描述元素');
    }

    // 更新内容
    descriptionElement.innerHTML = `
        <strong>数据集描述:</strong><br>
        ${description}
    `;
    console.log('✅ 数据集描述内容已更新');
}