const API_BASE = '/api/v1/futures';

let klineChart = null;
let currentSymbol = null;
let currentPeriod = '15';
let allFuturesData = [];
let watchedSymbols = [];
let currentDetailData = null;

document.addEventListener('DOMContentLoaded', function() {
    addScoreGradient();
    updateTime();
    setInterval(updateTime, 1000);
    
    initEventListeners();
    loadWatchedSymbols();
    loadFuturesList();
});

function addScoreGradient() {
    const svg = document.querySelector('.score-ring svg');
    if (svg && !svg.querySelector('defs')) {
        const defs = document.createElementNS('http://www.w3.org/2000/svg', 'defs');
        const gradient = document.createElementNS('http://www.w3.org/2000/svg', 'linearGradient');
        gradient.setAttribute('id', 'scoreGradient');
        gradient.setAttribute('x1', '0%');
        gradient.setAttribute('y1', '0%');
        gradient.setAttribute('x2', '100%');
        gradient.setAttribute('y2', '0%');
        
        const stop1 = document.createElementNS('http://www.w3.org/2000/svg', 'stop');
        stop1.setAttribute('offset', '0%');
        stop1.setAttribute('stop-color', '#ef4444');
        
        const stop2 = document.createElementNS('http://www.w3.org/2000/svg', 'stop');
        stop2.setAttribute('offset', '50%');
        stop2.setAttribute('stop-color', '#f59e0b');
        
        const stop3 = document.createElementNS('http://www.w3.org/2000/svg', 'stop');
        stop3.setAttribute('offset', '100%');
        stop3.setAttribute('stop-color', '#10b981');
        
        gradient.appendChild(stop1);
        gradient.appendChild(stop2);
        gradient.appendChild(stop3);
        defs.appendChild(gradient);
        svg.insertBefore(defs, svg.firstChild);
    }
}

function updateTime() {
    const now = new Date();
    const timeStr = now.getFullYear() + '-' + 
        String(now.getMonth() + 1).padStart(2, '0') + '-' + 
        String(now.getDate()).padStart(2, '0') + ' ' + 
        String(now.getHours()).padStart(2, '0') + ':' + 
        String(now.getMinutes()).padStart(2, '0') + ':' + 
        String(now.getSeconds()).padStart(2, '0');
    document.getElementById('current-time').textContent = timeStr;
}

function initEventListeners() {
    document.getElementById('back-btn').addEventListener('click', showListView);
    
    document.getElementById('theme-toggle').addEventListener('click', toggleTheme);
    
    document.getElementById('suggestion-card').addEventListener('click', function() {
        if (currentDetailData) {
            showSuggestionModal(currentDetailData);
        }
    });
    
    const savedTheme = localStorage.getItem('futures-theme');
    if (savedTheme === 'dark') {
        document.body.classList.remove('theme-minimal');
        updateThemeIcon(false);
    } else {
        document.body.classList.add('theme-minimal');
        updateThemeIcon(true);
    }
    
    document.querySelectorAll('.period-btn').forEach(btn => {
        btn.addEventListener('click', function() {
            document.querySelectorAll('.period-btn').forEach(b => b.classList.remove('active'));
            this.classList.add('active');
            currentPeriod = this.dataset.period;
            loadKlineData(currentSymbol, currentPeriod);
        });
    });
    
    document.getElementById('search-input').addEventListener('input', function() {
        filterFuturesList(this.value);
    });
    
    document.querySelectorAll('.filter-tab').forEach(tab => {
        tab.addEventListener('click', function() {
            document.querySelectorAll('.filter-tab').forEach(t => t.classList.remove('active'));
            this.classList.add('active');
            filterByCategory(this.dataset.category);
        });
    });
    
    document.getElementById('sort-select').addEventListener('change', function() {
        sortFuturesList(this.value);
    });
    
    document.querySelectorAll('.modal-overlay').forEach(modal => {
        modal.addEventListener('click', function(e) {
            if (e.target === this) {
                this.classList.remove('active');
            }
        });
    });
}

function closeModal(modalId) {
    document.getElementById(modalId).classList.remove('active');
}

function showListView() {
    document.getElementById('list-view').classList.add('active');
    document.getElementById('detail-view').classList.remove('active');
    if (klineChart) {
        klineChart.dispose();
        klineChart = null;
    }
}

function showDetailView(symbol) {
    currentSymbol = symbol;
    document.getElementById('list-view').classList.remove('active');
    document.getElementById('detail-view').classList.add('active');
    loadFuturesDetail(symbol);
    loadKlineData(symbol, currentPeriod);
    loadHistoryList(symbol);
}

async function loadWatchedSymbols() {
    try {
        const response = await fetch(`${API_BASE}/watched`);
        const data = await response.json();
        if (data.success) {
            watchedSymbols = data.data.map(s => s.symbol);
            document.getElementById('count-watched').textContent = watchedSymbols.length;
        }
    } catch (error) {
        console.error('加载自选列表失败:', error);
        watchedSymbols = [];
    }
}

async function toggleWatch(symbol, name, event) {
    event.stopPropagation();
    const isWatched = watchedSymbols.includes(symbol);
    
    try {
        if (isWatched) {
            const response = await fetch(`${API_BASE}/watched/${symbol}`, { method: 'DELETE' });
            const data = await response.json();
            if (data.success) {
                watchedSymbols = watchedSymbols.filter(s => s !== symbol);
            }
        } else {
            const response = await fetch(`${API_BASE}/watched`, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ symbol, name })
            });
            const data = await response.json();
            if (data.success) {
                watchedSymbols.push(symbol);
            }
        }
        document.getElementById('count-watched').textContent = watchedSymbols.length;
        
        const activeTab = document.querySelector('.filter-tab.active');
        if (activeTab && activeTab.dataset.category === 'watched') {
            filterByCategory('watched');
        } else {
            renderFuturesGrid(getCurrentFilteredData());
        }
    } catch (error) {
        console.error('切换自选失败:', error);
    }
}

function getCurrentFilteredData() {
    const activeTab = document.querySelector('.filter-tab.active');
    const category = activeTab ? activeTab.dataset.category : 'all';
    return filterDataByCategory(allFuturesData, category);
}

function filterDataByCategory(data, category) {
    if (category === 'all') return data;
    if (category === 'watched') {
        return data.filter(item => watchedSymbols.includes(item.symbol));
    }
    const categoryMap = {
        'energy': ['SC', 'FU', 'LU', 'BU', 'RU', 'NR'],
        'metal': ['AU', 'AG', 'CU', 'AL', 'ZN', 'NI', 'SN', 'PB', 'SS', 'RB', 'HC', 'I', 'J', 'JM', 'AO', 'SI', 'LC', 'PS'],
        'agriculture': ['M', 'RM', 'C', 'CS', 'A', 'B', 'Y', 'P', 'OI', 'CF', 'SR', 'AP', 'LH'],
        'finance': ['IF', 'IC', 'IH', 'IM', 'T', 'TF', 'TS', 'TL']
    };
    const symbols = categoryMap[category] || [];
    return data.filter(item => {
        const symbolBase = item.symbol.replace(/[0-9]/g, '').toUpperCase();
        return symbols.includes(symbolBase);
    });
}

async function loadFuturesList() {
    try {
        const response = await fetch(`${API_BASE}/list`);
        const data = await response.json();
        if (data.success) {
            allFuturesData = data.data;
            renderFuturesGrid(allFuturesData);
            updateStats(allFuturesData);
        }
    } catch (error) {
        console.error('加载品种列表失败:', error);
        loadFuturesFromConfig();
    }
}

async function loadFuturesFromConfig() {
    try {
        const response = await fetch('/api/v1/config');
        const config = await response.json();
        const futuresConfig = config.futures || {};
        
        allFuturesData = Object.entries(futuresConfig).map(([name, symbol]) => ({
            symbol: symbol,
            name: name,
            price: 0,
            change: 0,
            changePct: 0,
            suggestion: '等待数据',
            suggestionType: 'neutral',
            periods: { '5': 'neutral', '15': 'neutral', '30': 'neutral', '60': 'neutral' },
            successRate: 0,
            trendScore: 0,
            resistance: 0,
            support: 0,
            open: 0,
            high: 0,
            low: 0,
            volume: 0
        }));
        
        renderFuturesGrid(allFuturesData);
        updateStats(allFuturesData);
    } catch (error) {
        console.error('加载配置失败:', error);
        const mockData = generateMockFuturesData();
        allFuturesData = mockData;
        renderFuturesGrid(mockData);
        updateStats(mockData);
    }
}

function generateMockFuturesData() {
    return [
        { symbol: 'SC2606', name: '原油', price: 528.6, change: 12.1, changePct: 2.35, suggestion: '逢低做多', suggestionType: 'up', periods: { '5': 'up', '15': 'up', '30': 'up', '60': 'neutral' }, successRate: 72, trendScore: 85, resistance: 535, support: 518, open: 516.5, high: 530, low: 515, volume: 78000 },
        { symbol: 'AU2606', name: '黄金', price: 685.2, change: 12.45, changePct: 1.85, suggestion: '逢低做多', suggestionType: 'up', periods: { '5': 'up', '15': 'up', '30': 'up', '60': 'up' }, successRate: 78, trendScore: 92, resistance: 692, support: 678, open: 672.75, high: 688, low: 670, volume: 128000 },
        { symbol: 'AG2606', name: '白银', price: 8250, change: 165, changePct: 2.04, suggestion: '逢低做多', suggestionType: 'up', periods: { '5': 'up', '15': 'up', '30': 'up', '60': 'up' }, successRate: 75, trendScore: 88, resistance: 8350, support: 8100, open: 8085, high: 8280, low: 8050, volume: 95000 },
        { symbol: 'CU2606', name: '沪铜', price: 80610, change: 112, changePct: 0.14, suggestion: '观望等待', suggestionType: 'neutral', periods: { '5': 'neutral', '15': 'up', '30': 'neutral', '60': 'up' }, successRate: 58, trendScore: 65, resistance: 81200, support: 79800, open: 80498, high: 80850, low: 80200, volume: 42000 },
        { symbol: 'M2609', name: '豆粕', price: 2985, change: -51, changePct: -1.68, suggestion: '逢高做空', suggestionType: 'down', periods: { '5': 'down', '15': 'down', '30': 'down', '60': 'neutral' }, successRate: 65, trendScore: 35, resistance: 3050, support: 2920, open: 3036, high: 3040, low: 2980, volume: 185000 }
    ];
}

function renderFuturesGrid(data) {
    const grid = document.getElementById('futures-grid');
    if (data.length === 0) {
        grid.innerHTML = '<div class="empty-state">暂无数据</div>';
        return;
    }
    
    grid.innerHTML = data.map(item => {
        const isWatched = watchedSymbols.includes(item.symbol);
        return `
        <div class="futures-card" onclick="showDetailView('${item.symbol}')">
            <div class="card-top">
                <div class="card-symbol">
                    <div class="symbol-tag">${item.symbol.replace(/[0-9]/g, '').substring(0, 2)}</div>
                    <div>
                        <div class="card-name">${item.name}</div>
                        <div class="card-code">${item.symbol}</div>
                    </div>
                </div>
                <div class="card-price">
                    <div class="price-value ${item.change >= 0 ? 'up' : 'down'}">¥${formatNumber(item.price)}</div>
                    <div class="price-change ${item.change >= 0 ? 'up' : 'down'}">
                        <i class="fas fa-arrow-${item.change >= 0 ? 'up' : 'down'}"></i>
                        ${item.change >= 0 ? '+' : ''}${formatNumber(item.change)} (${item.changePct >= 0 ? '+' : ''}${item.changePct.toFixed(2)}%)
                    </div>
                </div>
            </div>
            <span class="suggestion-badge ${item.suggestionType}">${item.suggestion}</span>
            <div class="card-metrics">
                <div class="metric-item">
                    <span class="metric-label">成功率</span>
                    <div class="metric-bar"><div class="metric-fill ${item.successRate >= 70 ? 'up' : item.successRate >= 60 ? 'orange' : 'down'}" style="width: ${item.successRate}%"></div></div>
                    <span class="metric-value ${item.successRate >= 70 ? 'up' : item.successRate >= 60 ? '' : 'down'}">${item.successRate}%</span>
                </div>
                <div class="metric-item">
                    <span class="metric-label">趋势评分</span>
                    <div class="metric-bar"><div class="metric-fill ${item.trendScore >= 70 ? 'up' : item.trendScore >= 50 ? 'orange' : 'down'}" style="width: ${item.trendScore}%"></div></div>
                    <span class="metric-value ${item.trendScore >= 70 ? 'up' : item.trendScore >= 50 ? '' : 'down'}">${item.trendScore}</span>
                </div>
            </div>
            <div class="period-trends">
                <span class="period-tag ${item.periods['5']}">5M</span>
                <span class="period-tag ${item.periods['15']}">15M</span>
                <span class="period-tag ${item.periods['30']}">30M</span>
                <span class="period-tag ${item.periods['60']}">1H</span>
            </div>
            <div class="card-footer">
                <div class="key-levels">
                    <span><span class="label">压力</span> <span class="down">${formatNumber(item.resistance)}</span></span>
                    <span><span class="label">支撑</span> <span class="up">${formatNumber(item.support)}</span></span>
                </div>
                <div style="display:flex;align-items:center;gap:8px;">
                    <button class="watch-btn ${isWatched ? 'active' : ''}" onclick="toggleWatch('${item.symbol}', '${item.name}', event)" title="${isWatched ? '取消自选' : '加入自选'}">
                        <i class="fas fa-star"></i>
                    </button>
                    <span class="detail-link"><i class="fas fa-arrow-right"></i> 详情</span>
                </div>
            </div>
        </div>
    `}).join('');
}

function formatNumber(num) {
    if (num === 0 || num === undefined || num === null) return '--';
    return num.toLocaleString('zh-CN', { minimumFractionDigits: 0, maximumFractionDigits: 2 });
}

function calcPriceChangePercent(current, target) {
    if (!current || !target || current === 0) return '--';
    const pct = ((target - current) / current * 100).toFixed(2);
    return (pct >= 0 ? '+' : '') + pct + '%';
}

function updateStats(data) {
    const total = data.length;
    const upCount = data.filter(d => d.change > 0).length;
    const downCount = data.filter(d => d.change < 0).length;
    const neutralCount = total - upCount - downCount;
    
    document.getElementById('total-count').textContent = total;
    document.getElementById('up-count').textContent = upCount;
    document.getElementById('down-count').textContent = downCount;
    document.getElementById('neutral-count').textContent = neutralCount;
    document.getElementById('count-all').textContent = total;
    document.getElementById('count-watched').textContent = watchedSymbols.length;
}

function filterFuturesList(keyword) {
    keyword = keyword.toLowerCase();
    const activeTab = document.querySelector('.filter-tab.active');
    const category = activeTab ? activeTab.dataset.category : 'all';
    
    let filtered = filterDataByCategory(allFuturesData, category);
    
    if (keyword) {
        filtered = filtered.filter(item => 
            item.name.toLowerCase().includes(keyword) || 
            item.symbol.toLowerCase().includes(keyword)
        );
    }
    
    renderFuturesGrid(filtered);
}

function filterByCategory(category) {
    let filtered = filterDataByCategory(allFuturesData, category);
    renderFuturesGrid(filtered);
}

function sortFuturesList(sortBy) {
    let sorted = [...getCurrentFilteredData()];
    switch(sortBy) {
        case 'success_rate':
            sorted.sort((a, b) => b.successRate - a.successRate);
            break;
        case 'trend_score':
            sorted.sort((a, b) => b.trendScore - a.trendScore);
            break;
        case 'change_pct':
            sorted.sort((a, b) => b.changePct - a.changePct);
            break;
        case 'name':
            sorted.sort((a, b) => a.name.localeCompare(b.name, 'zh'));
            break;
    }
    renderFuturesGrid(sorted);
}

async function loadFuturesDetail(symbol) {
    try {
        const response = await fetch(`${API_BASE}/detail/${symbol}`);
        const data = await response.json();
        if (data.success) {
            currentDetailData = data.data;
            updateDetailView(data.data);
        }
    } catch (error) {
        console.error('加载详情失败:', error);
    }
}

function updateDetailView(data) {
    document.getElementById('detail-name').textContent = data.name || '--';
    document.getElementById('detail-symbol').textContent = data.symbol || '--';
    
    const priceEl = document.getElementById('detail-price');
    priceEl.textContent = '¥' + formatNumber(data.price);
    priceEl.className = 'price-value ' + (data.change >= 0 ? 'up' : 'down');
    
    const changeEl = document.getElementById('detail-change');
    changeEl.className = 'price-change ' + (data.change >= 0 ? 'up' : 'down');
    changeEl.innerHTML = `<i class="fas fa-arrow-${data.change >= 0 ? 'up' : 'down'}"></i> ${data.change >= 0 ? '+' : ''}${formatNumber(data.change)} (${data.changePct >= 0 ? '+' : ''}${data.changePct.toFixed(2)}%)`;
    
    document.getElementById('detail-open').textContent = formatNumber(data.open);
    document.getElementById('detail-high').textContent = formatNumber(data.high);
    document.getElementById('detail-low').textContent = formatNumber(data.low);
    document.getElementById('detail-volume').textContent = formatNumber(data.volume);
    
    const r1 = data.resistances ? data.resistances[0] : data.resistance;
    const s1 = data.supports ? data.supports[0] : data.support;
    
    document.getElementById('detail-r1').textContent = `R1: ${formatNumber(r1)} (${calcPriceChangePercent(data.price, r1)})`;
    document.getElementById('detail-s1').textContent = `S1: ${formatNumber(s1)} (${calcPriceChangePercent(data.price, s1)})`;
    
    const badge = document.getElementById('suggestion-badge');
    badge.textContent = data.suggestion || '--';
    badge.className = 'suggestion-badge ' + (data.suggestionType || 'neutral');
    
    document.getElementById('suggestion-reason').textContent = data.suggestionReason || '--';
    document.getElementById('entry-price').textContent = formatNumber(data.entryPrice);
    document.getElementById('target-price').textContent = formatNumber(data.targetPrice);
    document.getElementById('stop-loss').textContent = formatNumber(data.stopLoss);
    document.getElementById('risk-level').textContent = data.riskLevel || '--';
    
    if (data.macd) {
        document.getElementById('macd-signal').textContent = data.macd.signal;
        document.getElementById('macd-detail').textContent = data.macd.detail;
    }
    if (data.rsi) {
        document.getElementById('rsi-value').textContent = data.rsi.value;
        document.getElementById('rsi-status').textContent = data.rsi.status;
    }
    if (data.boll) {
        document.getElementById('boll-signal').textContent = data.boll.signal;
        document.getElementById('boll-detail').textContent = data.boll.detail;
    }
    if (data.kdj) {
        document.getElementById('kdj-signal').textContent = data.kdj.signal;
        document.getElementById('kdj-detail').textContent = data.kdj.detail;
    }
    
    if (data.resistances) {
        for (let i = 0; i < 2; i++) {
            const el = document.getElementById(`resistance-${i + 1}`);
            if (el) {
                el.querySelector('span:last-child').textContent = formatNumber(data.resistances[i]);
            }
        }
    }
    if (data.supports) {
        for (let i = 0; i < 2; i++) {
            const el = document.getElementById(`support-${i + 1}`);
            if (el) {
                el.querySelector('span:last-child').textContent = formatNumber(data.supports[i]);
            }
        }
    }
    
    if (data.pivotPoint) {
        document.getElementById('pivot-point').querySelector('span:last-child').textContent = formatNumber(data.pivotPoint);
    }
    
    if (data.periodConsistency) {
        const container = document.getElementById('period-trends');
        const periodNames = { '5': '5分钟', '15': '15分钟', '30': '30分钟', '60': '60分钟' };
        container.innerHTML = Object.entries(data.periodConsistency).map(([period, trend]) => `
            <div class="trend-row">
                <span class="trend-period">${periodNames[period]}</span>
                <span class="trend-badge ${trend}">
                    ${trend === 'up' ? '上涨' : trend === 'down' ? '下跌' : '震荡'}
                </span>
            </div>
        `).join('');
    }
    
    if (data.trendScore !== undefined) {
        document.getElementById('trend-score').textContent = data.trendScore;
        const circle = document.getElementById('score-fill');
        const circumference = 2 * Math.PI * 45;
        const offset = circumference - (data.trendScore / 100) * circumference;
        circle.style.strokeDasharray = circumference;
        circle.style.strokeDashoffset = offset;
    }
}

async function loadHistoryList(symbol) {
    try {
        const response = await fetch(`${API_BASE}/analysis/history/${symbol}?limit=10`);
        const data = await response.json();
        if (data.success) {
            renderHistoryList(data.data);
        }
    } catch (error) {
        console.error('加载历史记录失败:', error);
        document.getElementById('history-list').innerHTML = '<div class="empty-state">暂无历史记录</div>';
    }
}

function renderHistoryList(records) {
    const container = document.getElementById('history-list');
    if (!records || records.length === 0) {
        container.innerHTML = '<div class="empty-state">暂无历史记录</div>';
        return;
    }
    
    container.innerHTML = records.map(record => `
        <div class="history-item" onclick="showHistoryModal(${JSON.stringify(record).replace(/"/g, '&quot;')})">
            <div class="history-item-left">
                <span class="history-time">${record.analysis_time ? record.analysis_time.replace('T', ' ').substring(0, 16) : '--'}</span>
                <span class="history-suggestion ${record.suggestion_type || 'neutral'}">${record.suggestion || '--'}</span>
                <span class="history-score">评分: ${record.trend_score || '--'}</span>
            </div>
            <div class="history-item-right">
                <div class="history-metric">
                    <span class="history-metric-label">MACD</span>
                    <span class="history-metric-value">${record.macd_signal || '--'}</span>
                </div>
                <div class="history-metric">
                    <span class="history-metric-label">RSI</span>
                    <span class="history-metric-value">${record.rsi_value || '--'}</span>
                </div>
                <button class="history-detail-btn" onclick="event.stopPropagation(); showHistoryModal(${JSON.stringify(record).replace(/"/g, '&quot;')})">
                    <i class="fas fa-chevron-right"></i>
                </button>
            </div>
        </div>
    `).join('');
}

function showSuggestionModal(data) {
    const body = document.getElementById('suggestion-modal-body');
    body.innerHTML = `
        <div class="modal-suggestion-main">
            <div class="suggestion-badge ${data.suggestionType || 'neutral'}" style="font-size:24px;font-weight:700;">${data.suggestion || '--'}</div>
            <div class="suggestion-reason" style="margin-top:8px;">${data.suggestionReason || '--'}</div>
        </div>
        <div class="modal-params-grid">
            <div class="modal-param-card">
                <span class="param-label">建议入场</span>
                <span class="param-value">${formatNumber(data.entryPrice)}</span>
            </div>
            <div class="modal-param-card">
                <span class="param-label">目标价位</span>
                <span class="param-value up">${formatNumber(data.targetPrice)}</span>
            </div>
            <div class="modal-param-card">
                <span class="param-label">止损价位</span>
                <span class="param-value down">${formatNumber(data.stopLoss)}</span>
            </div>
            <div class="modal-param-card">
                <span class="param-label">风险等级</span>
                <span class="param-value">${data.riskLevel || '--'}</span>
            </div>
        </div>
    `;
    document.getElementById('suggestion-modal').classList.add('active');
}

function showHistoryModal(record) {
    const body = document.getElementById('history-modal-body');
    body.innerHTML = `
        <div class="modal-section">
            <div class="modal-section-title"><i class="fas fa-robot"></i> AI交易建议</div>
            <div class="modal-suggestion-main" style="margin-bottom:0;">
                <div class="suggestion-badge ${record.suggestion_type || 'neutral'}" style="font-size:20px;font-weight:700;">${record.suggestion || '--'}</div>
            </div>
            <div class="modal-params-grid" style="margin-top:12px;">
                <div class="modal-param-card">
                    <span class="param-label">入场</span>
                    <span class="param-value">${formatNumber(record.entry_price)}</span>
                </div>
                <div class="modal-param-card">
                    <span class="param-label">目标</span>
                    <span class="param-value up">${formatNumber(record.target_price)}</span>
                </div>
                <div class="modal-param-card">
                    <span class="param-label">止损</span>
                    <span class="param-value down">${formatNumber(record.stop_loss)}</span>
                </div>
                <div class="modal-param-card">
                    <span class="param-label">风险</span>
                    <span class="param-value">${record.risk_level || '--'}</span>
                </div>
            </div>
        </div>
        <div class="modal-section">
            <div class="modal-section-title"><i class="fas fa-wave-pulse"></i> 技术指标</div>
            <div class="modal-indicators-grid">
                <div class="modal-indicator-item">
                    <span class="indicator-label">MACD</span>
                    <span class="indicator-value">${record.macd_signal || '--'}</span>
                </div>
                <div class="modal-indicator-item">
                    <span class="indicator-label">RSI</span>
                    <span class="indicator-value">${record.rsi_value || '--'}</span>
                </div>
                <div class="modal-indicator-item">
                    <span class="indicator-label">BOLL</span>
                    <span class="indicator-value">${record.boll_signal || '--'}</span>
                </div>
                <div class="modal-indicator-item">
                    <span class="indicator-label">KDJ</span>
                    <span class="indicator-value">${record.kdj_signal || '--'}</span>
                </div>
            </div>
        </div>
        <div class="modal-section">
            <div class="modal-section-title"><i class="fas fa-crosshairs"></i> 关键点位</div>
            <div class="modal-levels-list">
                ${(record.resistance_levels || []).map((v, i) => `
                    <div class="modal-level-row">
                        <span class="level-label">压力${i + 1}</span>
                        <span class="level-value down">${formatNumber(v)}</span>
                    </div>
                `).join('')}
                ${record.pivot_point ? `
                    <div class="modal-level-row" style="background:rgba(139,92,246,0.1);border-radius:8px;">
                        <span class="level-label" style="color:#8b5cf6;font-weight:600;">中枢 (PP)</span>
                        <span class="level-value" style="color:#8b5cf6;">${formatNumber(record.pivot_point)}</span>
                    </div>
                ` : ''}
                ${(record.support_levels || []).map((v, i) => `
                    <div class="modal-level-row">
                        <span class="level-label">支撑${i + 1}</span>
                        <span class="level-value up">${formatNumber(v)}</span>
                    </div>
                `).join('')}
            </div>
        </div>
        <div class="modal-section">
            <div class="modal-section-title"><i class="fas fa-timeline"></i> 多周期趋势</div>
            <div class="modal-trends-list">
                ${Object.entries(record.period_trends || {}).map(([period, trend]) => {
                    const names = { '5': '5分钟', '15': '15分钟', '30': '30分钟', '60': '60分钟' };
                    return `<div class="modal-trend-row">
                        <span class="modal-trend-period">${names[period] || period}</span>
                        <span class="modal-trend-badge ${trend}">${trend === 'up' ? '上涨' : trend === 'down' ? '下跌' : '震荡'}</span>
                    </div>`;
                }).join('')}
            </div>
        </div>
        <div class="modal-section">
            <div class="modal-section-title"><i class="fas fa-gauge-high"></i> 趋势评分</div>
            <div class="modal-param-card" style="text-align:center;">
                <span class="param-value" style="font-size:32px;">${record.trend_score || '--'}</span>
                <span class="param-label" style="display:block;margin-top:4px;">综合评分</span>
            </div>
        </div>
    `;
    document.getElementById('history-modal').classList.add('active');
}

async function loadKlineData(symbol, period) {
    try {
        const response = await fetch(`${API_BASE}/kline/${symbol}?period=${period}`);
        const data = await response.json();
        if (data.success) {
            renderKlineChart(data.data);
        }
    } catch (error) {
        console.error('加载K线数据失败:', error);
    }
}

function renderKlineChart(data) {
    if (klineChart) {
        klineChart.dispose();
    }
    
    const chartDom = document.getElementById('kline-chart');
    klineChart = echarts.init(chartDom, 'dark');
    
    const dates = data.map(d => d[0]);
    const values = data.map(d => [parseFloat(d[1]), parseFloat(d[2]), parseFloat(d[3]), parseFloat(d[4])]);
    const volumes = data.map(d => [parseInt(d[5]), d[2] >= d[1] ? 1 : -1]);
    
    const ma5 = calculateMA(data, 5);
    const ma10 = calculateMA(data, 10);
    const ma20 = calculateMA(data, 20);
    const macdData = calculateMACD(data);
    
    const option = {
        backgroundColor: 'transparent',
        animation: false,
        tooltip: {
            trigger: 'axis',
            axisPointer: { type: 'cross' },
            backgroundColor: 'rgba(10, 15, 25, 0.95)',
            borderColor: 'rgba(56, 189, 248, 0.2)',
            textStyle: { color: '#e2e8f0', fontSize: 12 }
        },
        axisPointer: {
            link: [{ xAxisIndex: 'all' }],
            label: { backgroundColor: '#06b6d4' }
        },
        grid: [
            { left: 70, right: 20, top: 10, height: '50%' },
            { left: 70, right: 20, top: '56%', height: '16%' },
            { left: 70, right: 20, top: '76%', height: '16%' }
        ],
        xAxis: [
            {
                type: 'category',
                data: dates,
                boundaryGap: true,
                axisLine: { lineStyle: { color: 'rgba(255,255,255,0.1)' } },
                axisLabel: { color: '#64748b', fontSize: 10 },
                splitLine: { show: false }
            },
            {
                type: 'category',
                gridIndex: 1,
                data: dates,
                axisLine: { show: false },
                axisLabel: { show: false },
                splitLine: { show: false }
            },
            {
                type: 'category',
                gridIndex: 2,
                data: dates,
                axisLine: { lineStyle: { color: 'rgba(255,255,255,0.1)' } },
                axisLabel: { color: '#64748b', fontSize: 10 },
                splitLine: { show: false }
            }
        ],
        yAxis: [
            {
                scale: true,
                axisLine: { show: false },
                axisLabel: { color: '#64748b' },
                splitLine: { lineStyle: { color: 'rgba(255,255,255,0.05)', type: 'dashed' } }
            },
            {
                scale: true,
                gridIndex: 1,
                axisLine: { show: false },
                axisLabel: { show: false },
                splitLine: { show: false }
            },
            {
                scale: true,
                gridIndex: 2,
                axisLine: { show: false },
                axisLabel: { color: '#64748b', fontSize: 10 },
                splitLine: { lineStyle: { color: 'rgba(255,255,255,0.05)', type: 'dashed' } }
            }
        ],
        dataZoom: [
            { type: 'inside', xAxisIndex: [0, 1, 2], start: 50, end: 100 },
            {
                show: true,
                xAxisIndex: [0, 1, 2],
                type: 'slider',
                bottom: 5,
                height: 16,
                borderColor: 'transparent',
                backgroundColor: 'rgba(15, 20, 30, 0.5)',
                fillerColor: 'rgba(6, 182, 212, 0.15)',
                handleStyle: { color: '#06b6d4' },
                textStyle: { color: '#64748b' }
            }
        ],
        series: [
            {
                name: 'K线',
                type: 'candlestick',
                data: values,
                itemStyle: {
                    color: '#10b981',
                    color0: '#ef4444',
                    borderColor: '#10b981',
                    borderColor0: '#ef4444'
                }
            },
            {
                name: 'MA5',
                type: 'line',
                data: ma5,
                lineStyle: { width: 1, color: '#f59e0b' },
                symbol: 'none'
            },
            {
                name: 'MA10',
                type: 'line',
                data: ma10,
                lineStyle: { width: 1, color: '#3b82f6' },
                symbol: 'none'
            },
            {
                name: 'MA20',
                type: 'line',
                data: ma20,
                lineStyle: { width: 1, color: '#8b5cf6' },
                symbol: 'none'
            },
            {
                name: '成交量',
                type: 'bar',
                xAxisIndex: 1,
                yAxisIndex: 1,
                data: volumes.map(v => ({
                    value: v[0],
                    itemStyle: { color: v[1] >= 0 ? 'rgba(16,185,129,0.5)' : 'rgba(239,68,68,0.5)' }
                }))
            },
            {
                name: 'DIF',
                type: 'line',
                xAxisIndex: 2,
                yAxisIndex: 2,
                data: macdData.dif,
                lineStyle: { width: 1.5, color: '#3b82f6' },
                symbol: 'none'
            },
            {
                name: 'DEA',
                type: 'line',
                xAxisIndex: 2,
                yAxisIndex: 2,
                data: macdData.dea,
                lineStyle: { width: 1.5, color: '#f59e0b' },
                symbol: 'none'
            },
            {
                name: 'MACD',
                type: 'bar',
                xAxisIndex: 2,
                yAxisIndex: 2,
                data: macdData.macd.map(val => ({
                    value: val,
                    itemStyle: { color: val >= 0 ? 'rgba(16,185,129,0.6)' : 'rgba(239,68,68,0.6)' }
                }))
            }
        ]
    };
    
    klineChart.setOption(option);
    window.addEventListener('resize', () => klineChart && klineChart.resize());
}

function calculateMA(data, dayCount) {
    const result = [];
    for (let i = 0; i < data.length; i++) {
        if (i < dayCount - 1) {
            result.push('-');
            continue;
        }
        let sum = 0;
        for (let j = 0; j < dayCount; j++) {
            sum += parseFloat(data[i - j][2]);
        }
        result.push(parseFloat((sum / dayCount).toFixed(2)));
    }
    return result;
}

function toggleTheme() {
    const isMinimal = document.body.classList.toggle('theme-minimal');
    localStorage.setItem('futures-theme', isMinimal ? 'minimal' : 'dark');
    updateThemeIcon(isMinimal);
}

function updateThemeIcon(isMinimal) {
    const icon = document.querySelector('#theme-toggle i');
    if (icon) {
        icon.className = isMinimal ? 'fas fa-sun' : 'fas fa-moon';
    }
}

function calculateMACD(data) {
    const closes = data.map(d => parseFloat(d[2]));
    const ema12 = calcEMA(closes, 12);
    const ema26 = calcEMA(closes, 26);
    
    const dif = [];
    for (let i = 0; i < closes.length; i++) {
        if (ema12[i] !== null && ema26[i] !== null) {
            dif.push(ema12[i] - ema26[i]);
        } else {
            dif.push(0);
        }
    }
    
    const dea = calcEMA(dif, 9);
    const macd = dif.map((d, i) => 2 * (d - (dea[i] || 0)));
    
    return { dif, dea, macd };
}

function calcEMA(data, period) {
    const result = new Array(data.length).fill(null);
    const multiplier = 2 / (period + 1);
    
    if (data.length < period) return result;
    
    let sum = 0;
    for (let i = 0; i < period; i++) sum += data[i];
    result[period - 1] = sum / period;
    
    for (let i = period; i < data.length; i++) {
        result[i] = (data[i] - result[i - 1]) * multiplier + result[i - 1];
    }
    
    return result;
}