// TSP智能助手综合管理平台前端脚本

class TSPDashboard {
    constructor() {
        this.currentTab = 'dashboard';
        this.charts = {};
        this.refreshIntervals = {};
        this.websocket = null;
        this.sessionId = null;
        this.isAgentMode = true;
        
        this.init();
        this.restorePageState();
    }

    init() {
        this.bindEvents();
        this.loadInitialData();
        this.startAutoRefresh();
        this.initCharts();
    }

    bindEvents() {
        // 标签页切换
        document.querySelectorAll('[data-tab]').forEach(tab => {
            tab.addEventListener('click', (e) => {
                e.preventDefault();
                this.switchTab(tab.dataset.tab);
            });
        });

        // 对话控制
        document.getElementById('start-chat').addEventListener('click', () => this.startChat());
        document.getElementById('end-chat').addEventListener('click', () => this.endChat());
        document.getElementById('create-work-order').addEventListener('click', () => this.showCreateWorkOrderModal());
        document.getElementById('send-button').addEventListener('click', () => this.sendMessage());
        document.getElementById('message-input').addEventListener('keypress', (e) => {
            if (e.key === 'Enter') this.sendMessage();
        });

        // 快速操作按钮
        document.querySelectorAll('.quick-action-btn').forEach(btn => {
            btn.addEventListener('click', () => {
                const message = btn.dataset.message;
                document.getElementById('message-input').value = message;
                this.sendMessage();
            });
        });

        // Agent控制
        document.getElementById('agent-mode-toggle').addEventListener('change', (e) => {
            this.toggleAgentMode(e.target.checked);
        });
        document.getElementById('start-agent-monitoring').addEventListener('click', () => this.startAgentMonitoring());
        document.getElementById('stop-agent-monitoring').addEventListener('click', () => this.stopAgentMonitoring());
        document.getElementById('proactive-monitoring').addEventListener('click', () => this.proactiveMonitoring());
        document.getElementById('intelligent-analysis').addEventListener('click', () => this.intelligentAnalysis());

        // 预警管理
        document.getElementById('refresh-alerts').addEventListener('click', () => this.loadAlerts());
        document.getElementById('alert-filter').addEventListener('change', () => this.updateAlertsDisplay());

        // 知识库管理
        document.getElementById('search-knowledge').addEventListener('click', () => this.searchKnowledge());
        document.getElementById('knowledge-search').addEventListener('keypress', (e) => {
            if (e.key === 'Enter') this.searchKnowledge();
        });

        // 工单管理
        document.getElementById('refresh-workorders').addEventListener('click', () => this.loadWorkOrders());
        document.getElementById('workorder-status-filter').addEventListener('change', () => this.loadWorkOrders());
        document.getElementById('workorder-priority-filter').addEventListener('change', () => this.loadWorkOrders());

        // 模态框
        document.getElementById('create-work-order-btn').addEventListener('click', () => this.createWorkOrder());
        document.getElementById('add-knowledge-btn').addEventListener('click', () => this.addKnowledge());
        document.getElementById('upload-file-btn').addEventListener('click', () => this.uploadFile());

        // 置信度滑块
        document.getElementById('knowledge-confidence').addEventListener('input', (e) => {
            document.getElementById('confidence-value').textContent = e.target.value;
        });
        document.getElementById('file-confidence').addEventListener('input', (e) => {
            document.getElementById('file-confidence-value').textContent = e.target.value;
        });

        // 处理方式选择
        document.getElementById('process-method').addEventListener('change', (e) => {
            const manualDiv = document.getElementById('manual-question-div');
            if (e.target.value === 'manual') {
                manualDiv.style.display = 'block';
            } else {
                manualDiv.style.display = 'none';
            }
        });

        // 系统设置
        document.getElementById('system-settings-form').addEventListener('submit', (e) => {
            e.preventDefault();
            this.saveSystemSettings();
        });
    }

    switchTab(tabName) {
        // 更新导航状态
        document.querySelectorAll('.nav-link').forEach(link => {
            link.classList.remove('active');
        });
        document.querySelector(`[data-tab="${tabName}"]`).classList.add('active');

        // 显示对应内容
        document.querySelectorAll('.tab-content').forEach(content => {
            content.style.display = 'none';
        });
        document.getElementById(`${tabName}-tab`).style.display = 'block';

        this.currentTab = tabName;
        
        // 保存当前页面状态
        this.savePageState();

        // 加载对应数据
        switch(tabName) {
            case 'dashboard':
                this.loadDashboardData();
                break;
            case 'chat':
                this.loadChatData();
                break;
            case 'agent':
                this.loadAgentData();
                break;
            case 'alerts':
                this.loadAlerts();
                break;
            case 'knowledge':
                this.loadKnowledge();
                break;
            case 'workorders':
                this.loadWorkOrders();
                break;
            case 'analytics':
                this.loadAnalytics();
                break;
            case 'settings':
                this.loadSettings();
                break;
        }
    }

    savePageState() {
        const state = {
            currentTab: this.currentTab,
            timestamp: Date.now()
        };
        localStorage.setItem('tsp_dashboard_state', JSON.stringify(state));
    }

    restorePageState() {
        try {
            const savedState = localStorage.getItem('tsp_dashboard_state');
            if (savedState) {
                const state = JSON.parse(savedState);
                // 如果状态保存时间不超过1小时，则恢复
                if (Date.now() - state.timestamp < 3600000) {
                    this.switchTab(state.currentTab);
                }
            }
        } catch (error) {
            console.warn('恢复页面状态失败:', error);
        }
    }

    async loadInitialData() {
        await Promise.all([
            this.loadHealth(),
            this.loadDashboardData(),
            this.loadSystemInfo()
        ]);
    }

    startAutoRefresh() {
        // 每5秒刷新健康状态
        this.refreshIntervals.health = setInterval(() => {
            this.loadHealth();
        }, 5000);

        // 每10秒刷新当前标签页数据
        this.refreshIntervals.currentTab = setInterval(() => {
            this.refreshCurrentTab();
        }, 10000);
    }

    refreshCurrentTab() {
        switch(this.currentTab) {
            case 'dashboard':
                this.loadDashboardData();
                break;
            case 'alerts':
                this.loadAlerts();
                break;
            case 'agent':
                this.loadAgentData();
                break;
        }
    }

    async loadHealth() {
        try {
            const response = await fetch('/api/health');
            const data = await response.json();
            this.updateHealthDisplay(data);
        } catch (error) {
            console.error('加载健康状态失败:', error);
        }
    }

    updateHealthDisplay(health) {
        const healthScore = health.health_score || 0;
        const healthStatus = health.health_status || 'unknown';
        
        // 更新健康指示器
        const healthDot = document.getElementById('health-dot');
        const healthStatusText = document.getElementById('health-status');
        const systemHealthDot = document.getElementById('system-health-dot');
        const systemHealthText = document.getElementById('system-health-text');
        const healthProgress = document.getElementById('health-progress');
        
        if (healthDot) {
            healthDot.className = `health-dot ${healthStatus}`;
        }
        if (healthStatusText) {
            healthStatusText.textContent = this.getHealthStatusText(healthStatus);
        }
        if (systemHealthDot) {
            systemHealthDot.className = `health-dot ${healthStatus}`;
        }
        if (systemHealthText) {
            systemHealthText.textContent = this.getHealthStatusText(healthStatus);
        }
        if (healthProgress) {
            healthProgress.style.width = `${healthScore * 100}%`;
            healthProgress.className = `progress-bar ${this.getHealthColor(healthScore)}`;
        }

        // 更新内存和CPU使用率
        const memoryUsage = health.memory_usage || 0;
        const memoryProgress = document.getElementById('memory-progress');
        if (memoryProgress) {
            memoryProgress.style.width = `${memoryUsage}%`;
        }

        const cpuUsage = health.cpu_usage || 0;
        const cpuProgress = document.getElementById('cpu-progress');
        if (cpuProgress) {
            cpuProgress.style.width = `${cpuUsage}%`;
        }
    }

    getHealthStatusText(status) {
        const statusMap = {
            'excellent': '优秀',
            'good': '良好',
            'fair': '一般',
            'poor': '较差',
            'critical': '严重',
            'unknown': '未知'
        };
        return statusMap[status] || status;
    }

    getHealthColor(score) {
        if (score >= 0.8) return 'bg-success';
        if (score >= 0.6) return 'bg-info';
        if (score >= 0.4) return 'bg-warning';
        return 'bg-danger';
    }

    async loadDashboardData() {
        try {
            const [sessionsResponse, alertsResponse, workordersResponse, knowledgeResponse] = await Promise.all([
                fetch('/api/chat/sessions'),
                fetch('/api/alerts'),
                fetch('/api/workorders'),
                fetch('/api/knowledge/stats')
            ]);

            const sessions = await sessionsResponse.json();
            const alerts = await alertsResponse.json();
            const workorders = await workordersResponse.json();
            const knowledge = await knowledgeResponse.json();

            // 更新统计卡片
            document.getElementById('total-sessions').textContent = sessions.sessions?.length || 0;
            document.getElementById('total-alerts').textContent = alerts.length || 0;
            document.getElementById('total-workorders').textContent = workorders.filter(w => w.status === 'open').length || 0;
            document.getElementById('knowledge-count').textContent = knowledge.total_entries || 0;
            
            // 更新知识库详细统计
            document.getElementById('knowledge-total').textContent = knowledge.total_entries || 0;
            document.getElementById('knowledge-active').textContent = knowledge.active_entries || 0;
            const confidencePercent = Math.round((knowledge.average_confidence || 0) * 100);
            document.getElementById('knowledge-confidence').style.width = `${confidencePercent}%`;
            document.getElementById('knowledge-confidence').setAttribute('aria-valuenow', confidencePercent);
            document.getElementById('knowledge-confidence').textContent = `${confidencePercent}%`;

            // 更新性能图表
            this.updatePerformanceChart(sessions, alerts, workorders);

        } catch (error) {
            console.error('加载仪表板数据失败:', error);
        }
    }

    initCharts() {
        // 性能趋势图
        const performanceCtx = document.getElementById('performanceChart');
        if (performanceCtx) {
            this.charts.performance = new Chart(performanceCtx, {
                type: 'line',
                data: {
                    labels: [],
                    datasets: [{
                        label: '活跃会话',
                        data: [],
                        borderColor: '#007bff',
                        backgroundColor: 'rgba(0, 123, 255, 0.1)',
                        tension: 0.4
                    }, {
                        label: '活跃预警',
                        data: [],
                        borderColor: '#dc3545',
                        backgroundColor: 'rgba(220, 53, 69, 0.1)',
                        tension: 0.4
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    }
                }
            });
        }

        // 分析图表
        const analyticsCtx = document.getElementById('analyticsChart');
        if (analyticsCtx) {
            this.charts.analytics = new Chart(analyticsCtx, {
                type: 'line',
                data: {
                    labels: [],
                    datasets: [{
                        label: '满意度',
                        data: [],
                        borderColor: '#28a745',
                        backgroundColor: 'rgba(40, 167, 69, 0.1)',
                        tension: 0.4
                    }, {
                        label: '解决时间(小时)',
                        data: [],
                        borderColor: '#ffc107',
                        backgroundColor: 'rgba(255, 193, 7, 0.1)',
                        tension: 0.4
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    }
                }
            });
        }

        // 类别分布图
        const categoryCtx = document.getElementById('categoryChart');
        if (categoryCtx) {
            this.charts.category = new Chart(categoryCtx, {
                type: 'doughnut',
                data: {
                    labels: [],
                    datasets: [{
                        data: [],
                        backgroundColor: [
                            '#007bff',
                            '#28a745',
                            '#ffc107',
                            '#dc3545',
                            '#17a2b8'
                        ]
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false
                }
            });
        }
    }

    updatePerformanceChart(sessions, alerts, workorders) {
        if (!this.charts.performance) return;

        const now = new Date();
        const labels = [];
        const sessionData = [];
        const alertData = [];

        // 生成过去24小时的数据点
        for (let i = 23; i >= 0; i--) {
            const time = new Date(now.getTime() - i * 60 * 60 * 1000);
            labels.push(time.getHours() + ':00');
            sessionData.push(Math.floor(Math.random() * 10) + 5); // 模拟数据
            alertData.push(Math.floor(Math.random() * 5)); // 模拟数据
        }

        this.charts.performance.data.labels = labels;
        this.charts.performance.data.datasets[0].data = sessionData;
        this.charts.performance.data.datasets[1].data = alertData;
        this.charts.performance.update();
    }

    // 对话功能
    async startChat() {
        try {
            const userId = document.getElementById('user-id').value;
            const workOrderId = document.getElementById('work-order-id').value;

            const response = await fetch('/api/chat/session', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    user_id: userId,
                    work_order_id: workOrderId ? parseInt(workOrderId) : null
                })
            });

            const data = await response.json();
            if (data.success) {
                this.sessionId = data.session_id;
                document.getElementById('start-chat').disabled = true;
                document.getElementById('end-chat').disabled = false;
                document.getElementById('message-input').disabled = false;
                document.getElementById('send-button').disabled = false;
                document.getElementById('session-info').textContent = `会话ID: ${this.sessionId}`;
                document.getElementById('connection-status').className = 'badge bg-success';
                document.getElementById('connection-status').innerHTML = '<i class="fas fa-circle me-1"></i>已连接';
                
                this.showNotification('对话已开始', 'success');
            } else {
                this.showNotification('开始对话失败', 'error');
            }
        } catch (error) {
            console.error('开始对话失败:', error);
            this.showNotification('开始对话失败', 'error');
        }
    }

    async endChat() {
        try {
            if (!this.sessionId) return;

            const response = await fetch(`/api/chat/session/${this.sessionId}`, {
                method: 'DELETE'
            });

            const data = await response.json();
            if (data.success) {
                this.sessionId = null;
                document.getElementById('start-chat').disabled = false;
                document.getElementById('end-chat').disabled = true;
                document.getElementById('message-input').disabled = true;
                document.getElementById('send-button').disabled = true;
                document.getElementById('session-info').textContent = '未开始对话';
                document.getElementById('connection-status').className = 'badge bg-secondary';
                document.getElementById('connection-status').innerHTML = '<i class="fas fa-circle me-1"></i>未连接';
                
                this.showNotification('对话已结束', 'info');
            } else {
                this.showNotification('结束对话失败', 'error');
            }
        } catch (error) {
            console.error('结束对话失败:', error);
            this.showNotification('结束对话失败', 'error');
        }
    }

    async sendMessage() {
        const messageInput = document.getElementById('message-input');
        const message = messageInput.value.trim();
        
        if (!message || !this.sessionId) return;

        // 显示用户消息
        this.addMessage('user', message);
        messageInput.value = '';

        // 发送消息到服务器
        try {
            const response = await fetch('/api/chat/message', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    session_id: this.sessionId,
                    message: message
                })
            });

            const data = await response.json();
            if (data.success) {
                this.addMessage('assistant', data.response, data.knowledge_used);
            } else {
                this.addMessage('assistant', '抱歉，处理您的消息时出现了错误。', null, true);
            }
        } catch (error) {
            console.error('发送消息失败:', error);
            this.addMessage('assistant', '网络连接错误，请稍后重试。', null, true);
        }
    }

    addMessage(role, content, knowledgeUsed = null, isError = false) {
        const messagesContainer = document.getElementById('chat-messages');
        
        // 移除欢迎消息
        const welcomeMsg = messagesContainer.querySelector('.text-center');
        if (welcomeMsg) {
            welcomeMsg.remove();
        }

        const messageDiv = document.createElement('div');
        messageDiv.className = `message ${role}`;
        
        const avatar = document.createElement('div');
        avatar.className = 'message-avatar';
        avatar.innerHTML = role === 'user' ? '<i class="fas fa-user"></i>' : '<i class="fas fa-robot"></i>';
        
        const contentDiv = document.createElement('div');
        contentDiv.className = 'message-content';
        contentDiv.innerHTML = `
            <div>${content}</div>
            <div class="message-time">${new Date().toLocaleTimeString()}</div>
        `;

        if (knowledgeUsed && knowledgeUsed.length > 0) {
            const knowledgeDiv = document.createElement('div');
            knowledgeDiv.className = 'knowledge-info';
            knowledgeDiv.innerHTML = `
                <i class="fas fa-lightbulb me-1"></i>
                使用了知识库: ${knowledgeUsed.map(k => k.question).join(', ')}
            `;
            contentDiv.appendChild(knowledgeDiv);
        }

        if (isError) {
            contentDiv.style.borderLeft = '4px solid #dc3545';
        }

        messageDiv.appendChild(avatar);
        messageDiv.appendChild(contentDiv);
        messagesContainer.appendChild(messageDiv);
        
        // 滚动到底部
        messagesContainer.scrollTop = messagesContainer.scrollHeight;
    }

    // Agent功能
    async toggleAgentMode(enabled) {
        try {
            const response = await fetch('/api/agent/toggle', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({ enabled })
            });

            const data = await response.json();
            if (data.success) {
                this.isAgentMode = enabled;
                this.showNotification(`Agent模式已${enabled ? '启用' : '禁用'}`, 'success');
                this.loadAgentData();
            } else {
                this.showNotification('切换Agent模式失败', 'error');
            }
        } catch (error) {
            console.error('切换Agent模式失败:', error);
            this.showNotification('切换Agent模式失败', 'error');
        }
    }

    async loadAgentData() {
        try {
            const response = await fetch('/api/agent/status');
            const data = await response.json();
            
            if (data.success) {
                document.getElementById('agent-current-state').textContent = data.status || '未知';
                document.getElementById('agent-active-goals').textContent = data.active_goals || 0;
                document.getElementById('agent-available-tools').textContent = data.available_tools || 0;
                
                // 更新工具列表
                this.updateToolsList(data.tools || []);
                
                // 更新执行历史
                this.updateExecutionHistory(data.execution_history || []);
            }
        } catch (error) {
            console.error('加载Agent数据失败:', error);
        }
    }

    updateToolsList(tools) {
        const toolsList = document.getElementById('tools-list');
        if (tools.length === 0) {
            toolsList.innerHTML = '<div class="empty-state"><i class="fas fa-tools"></i><p>暂无工具</p></div>';
            return;
        }

        const toolsHtml = tools.map(tool => `
            <div class="d-flex justify-content-between align-items-center mb-2">
                <div>
                    <strong>${tool.name}</strong>
                    <br>
                    <small class="text-muted">使用次数: ${tool.usage_count || 0}</small>
                </div>
                <div>
                    <span class="badge ${tool.success_rate >= 0.8 ? 'bg-success' : 'bg-warning'}">
                        ${Math.round((tool.success_rate || 0) * 100)}%
                    </span>
                </div>
            </div>
        `).join('');

        toolsList.innerHTML = toolsHtml;
    }

    updateExecutionHistory(history) {
        const historyContainer = document.getElementById('agent-execution-history');
        if (history.length === 0) {
            historyContainer.innerHTML = '<div class="empty-state"><i class="fas fa-history"></i><p>暂无执行历史</p></div>';
            return;
        }

        const historyHtml = history.slice(-5).map(item => `
            <div class="border-bottom pb-2 mb-2">
                <div class="d-flex justify-content-between">
                    <strong>${item.type || '未知任务'}</strong>
                    <small class="text-muted">${new Date(item.timestamp).toLocaleString()}</small>
                </div>
                <div class="text-muted small">${item.description || '无描述'}</div>
                <div class="mt-1">
                    <span class="badge ${item.success ? 'bg-success' : 'bg-danger'}">
                        ${item.success ? '成功' : '失败'}
                    </span>
                </div>
            </div>
        `).join('');

        historyContainer.innerHTML = historyHtml;
    }

    async startAgentMonitoring() {
        try {
            const response = await fetch('/api/agent/monitoring/start', { method: 'POST' });
            const data = await response.json();
            
            if (data.success) {
                this.showNotification('Agent监控已启动', 'success');
            } else {
                this.showNotification('启动Agent监控失败', 'error');
            }
        } catch (error) {
            console.error('启动Agent监控失败:', error);
            this.showNotification('启动Agent监控失败', 'error');
        }
    }

    async stopAgentMonitoring() {
        try {
            const response = await fetch('/api/agent/monitoring/stop', { method: 'POST' });
            const data = await response.json();
            
            if (data.success) {
                this.showNotification('Agent监控已停止', 'success');
            } else {
                this.showNotification('停止Agent监控失败', 'error');
            }
        } catch (error) {
            console.error('停止Agent监控失败:', error);
            this.showNotification('停止Agent监控失败', 'error');
        }
    }

    async proactiveMonitoring() {
        try {
            const response = await fetch('/api/agent/proactive-monitoring', { method: 'POST' });
            const data = await response.json();
            
            if (data.success) {
                this.showNotification(`主动监控完成，发现 ${data.proactive_actions?.length || 0} 个行动机会`, 'info');
            } else {
                this.showNotification('主动监控失败', 'error');
            }
        } catch (error) {
            console.error('主动监控失败:', error);
            this.showNotification('主动监控失败', 'error');
        }
    }

    async intelligentAnalysis() {
        try {
            const response = await fetch('/api/agent/intelligent-analysis', { method: 'POST' });
            const data = await response.json();
            
            if (data.success) {
                this.showNotification('智能分析完成', 'success');
                // 更新分析图表
                this.updateAnalyticsChart(data.analysis);
            } else {
                this.showNotification('智能分析失败', 'error');
            }
        } catch (error) {
            console.error('智能分析失败:', error);
            this.showNotification('智能分析失败', 'error');
        }
    }

    updateAnalyticsChart(analysis) {
        if (!this.charts.analytics || !analysis) return;

        // 更新分析图表数据
        const labels = analysis.trends?.dates || [];
        const satisfactionData = analysis.trends?.satisfaction || [];
        const resolutionTimeData = analysis.trends?.resolution_time || [];

        this.charts.analytics.data.labels = labels;
        this.charts.analytics.data.datasets[0].data = satisfactionData;
        this.charts.analytics.data.datasets[1].data = resolutionTimeData;
        this.charts.analytics.update();
    }

    // 预警管理
    async loadAlerts() {
        try {
            const response = await fetch('/api/alerts');
            const alerts = await response.json();
            this.updateAlertsDisplay(alerts);
            this.updateAlertStatistics(alerts);
        } catch (error) {
            console.error('加载预警失败:', error);
        }
    }

    updateAlertsDisplay(alerts) {
        const container = document.getElementById('alerts-container');
        
        if (alerts.length === 0) {
            container.innerHTML = `
                <div class="empty-state">
                    <i class="fas fa-check-circle"></i>
                    <h5>暂无活跃预警</h5>
                    <p>系统运行正常，没有需要处理的预警</p>
                </div>
            `;
            return;
        }

        const alertsHtml = alerts.map(alert => `
            <div class="alert-item ${alert.level}">
                <div class="d-flex justify-content-between align-items-start">
                    <div class="flex-grow-1">
                        <div class="d-flex align-items-center mb-2">
                            <span class="badge bg-${this.getAlertColor(alert.level)} me-2">${this.getLevelText(alert.level)}</span>
                            <span class="fw-bold">${alert.rule_name || '未知规则'}</span>
                            <span class="ms-auto text-muted small">${this.formatTime(alert.created_at)}</span>
                        </div>
                        <div class="alert-message mb-2">${alert.message}</div>
                        <div class="alert-meta text-muted small">
                            类型: ${this.getTypeText(alert.alert_type)} | 
                            级别: ${this.getLevelText(alert.level)}
                        </div>
                    </div>
                    <div class="ms-3">
                        <button class="btn btn-sm btn-outline-success" onclick="dashboard.resolveAlert(${alert.id})">
                            <i class="fas fa-check me-1"></i>解决
                        </button>
                    </div>
                </div>
            </div>
        `).join('');

        container.innerHTML = alertsHtml;
    }

    updateAlertStatistics(alerts) {
        const stats = alerts.reduce((acc, alert) => {
            acc[alert.level] = (acc[alert.level] || 0) + 1;
            acc.total = (acc.total || 0) + 1;
            return acc;
        }, {});

        document.getElementById('critical-alerts').textContent = stats.critical || 0;
        document.getElementById('warning-alerts').textContent = stats.warning || 0;
        document.getElementById('info-alerts').textContent = stats.info || 0;
        document.getElementById('total-alerts-count').textContent = stats.total || 0;
    }

    async resolveAlert(alertId) {
        try {
            const response = await fetch(`/api/alerts/${alertId}/resolve`, { method: 'POST' });
            const data = await response.json();
            
            if (data.success) {
                this.showNotification('预警已解决', 'success');
                this.loadAlerts();
            } else {
                this.showNotification('解决预警失败', 'error');
            }
        } catch (error) {
            console.error('解决预警失败:', error);
            this.showNotification('解决预警失败', 'error');
        }
    }

    // 知识库管理
    async loadKnowledge(page = 1) {
        try {
            const response = await fetch(`/api/knowledge?page=${page}&per_page=10`);
            const data = await response.json();
            
            if (data.knowledge) {
                this.updateKnowledgeDisplay(data.knowledge);
                this.updateKnowledgePagination(data);
            } else {
                // 兼容旧格式
                this.updateKnowledgeDisplay(data);
            }
        } catch (error) {
            console.error('加载知识库失败:', error);
        }
    }

    updateKnowledgeDisplay(knowledge) {
        const container = document.getElementById('knowledge-list');
        
        if (knowledge.length === 0) {
            container.innerHTML = '<div class="empty-state"><i class="fas fa-database"></i><p>暂无知识条目</p></div>';
            return;
        }

        const knowledgeHtml = knowledge.map(item => `
            <div class="knowledge-item">
                <div class="d-flex justify-content-between align-items-start">
                    <div class="flex-grow-1">
                        <h6 class="mb-1">${item.question}</h6>
                        <p class="text-muted mb-2">${item.answer}</p>
                        <div class="d-flex gap-3">
                            <small class="text-muted">分类: ${item.category}</small>
                            <small class="text-muted">置信度: ${Math.round(item.confidence_score * 100)}%</small>
                            <small class="text-muted">使用次数: ${item.usage_count || 0}</small>
                            <span class="badge ${item.is_verified ? 'bg-success' : 'bg-warning'}">
                                ${item.is_verified ? '已验证' : '未验证'}
                            </span>
                        </div>
                    </div>
                    <div class="ms-3">
                        <div class="btn-group" role="group">
                            ${item.is_verified ? 
                                `<button class="btn btn-sm btn-outline-warning" onclick="dashboard.unverifyKnowledge(${item.id})" title="取消验证">
                                    <i class="fas fa-times-circle"></i>
                                </button>` :
                                `<button class="btn btn-sm btn-outline-success" onclick="dashboard.verifyKnowledge(${item.id})" title="验证">
                                    <i class="fas fa-check-circle"></i>
                                </button>`
                            }
                            <button class="btn btn-sm btn-outline-danger" onclick="dashboard.deleteKnowledge(${item.id})" title="删除">
                                <i class="fas fa-trash"></i>
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        `).join('');

        container.innerHTML = knowledgeHtml;
    }

    updateKnowledgePagination(data) {
        const paginationContainer = document.getElementById('knowledge-pagination');
        if (!paginationContainer) return;
        
        const { page, total_pages, total } = data;
        
        if (total_pages <= 1) {
            paginationContainer.innerHTML = '';
            return;
        }
        
        let paginationHtml = `
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <small class="text-muted">共 ${total} 条知识，第 ${page} / ${total_pages} 页</small>
                </div>
                <nav>
                    <ul class="pagination pagination-sm mb-0">
        `;
        
        // 上一页
        if (page > 1) {
            paginationHtml += `<li class="page-item"><a class="page-link" href="#" onclick="dashboard.loadKnowledge(${page - 1})">上一页</a></li>`;
        }
        
        // 页码
        const startPage = Math.max(1, page - 2);
        const endPage = Math.min(total_pages, page + 2);
        
        for (let i = startPage; i <= endPage; i++) {
            const activeClass = i === page ? 'active' : '';
            paginationHtml += `<li class="page-item ${activeClass}"><a class="page-link" href="#" onclick="dashboard.loadKnowledge(${i})">${i}</a></li>`;
        }
        
        // 下一页
        if (page < total_pages) {
            paginationHtml += `<li class="page-item"><a class="page-link" href="#" onclick="dashboard.loadKnowledge(${page + 1})">下一页</a></li>`;
        }
        
        paginationHtml += `
                    </ul>
                </nav>
            </div>
        `;
        
        paginationContainer.innerHTML = paginationHtml;
    }

    async searchKnowledge() {
        const query = document.getElementById('knowledge-search').value.trim();
        if (!query) {
            this.loadKnowledge();
            return;
        }

        try {
            const response = await fetch(`/api/knowledge/search?q=${encodeURIComponent(query)}`);
            const results = await response.json();
            this.updateKnowledgeDisplay(results);
        } catch (error) {
            console.error('搜索知识库失败:', error);
        }
    }

    async addKnowledge() {
        const question = document.getElementById('knowledge-question').value.trim();
        const answer = document.getElementById('knowledge-answer').value.trim();
        const category = document.getElementById('knowledge-category').value;
        const confidence = parseFloat(document.getElementById('knowledge-confidence').value);

        if (!question || !answer) {
            this.showNotification('请填写完整信息', 'warning');
            return;
        }

        try {
            const response = await fetch('/api/knowledge', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    question,
                    answer,
                    category,
                    confidence_score: confidence
                })
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('知识添加成功', 'success');
                bootstrap.Modal.getInstance(document.getElementById('addKnowledgeModal')).hide();
                document.getElementById('knowledge-form').reset();
                this.loadKnowledge();
            } else {
                this.showNotification('添加知识失败', 'error');
            }
        } catch (error) {
            console.error('添加知识失败:', error);
            this.showNotification('添加知识失败', 'error');
        }
    }

    async uploadFile() {
        const fileInput = document.getElementById('file-input');
        const processMethod = document.getElementById('process-method').value;
        const category = document.getElementById('file-category').value;
        const confidence = parseFloat(document.getElementById('file-confidence').value);
        const manualQuestion = document.getElementById('manual-question').value.trim();

        if (!fileInput.files[0]) {
            this.showNotification('请选择文件', 'warning');
            return;
        }

        if (processMethod === 'manual' && !manualQuestion) {
            this.showNotification('请指定问题', 'warning');
            return;
        }

        // 显示进度条
        const progressDiv = document.getElementById('upload-progress');
        const progressBar = progressDiv.querySelector('.progress-bar');
        const statusText = document.getElementById('upload-status');
        
        progressDiv.style.display = 'block';
        progressBar.style.width = '0%';
        statusText.textContent = '正在上传文件...';

        try {
            const formData = new FormData();
            formData.append('file', fileInput.files[0]);
            formData.append('process_method', processMethod);
            formData.append('category', category);
            formData.append('confidence_score', confidence);
            if (manualQuestion) {
                formData.append('manual_question', manualQuestion);
            }

            // 模拟进度更新
            let progress = 0;
            const progressInterval = setInterval(() => {
                progress += Math.random() * 20;
                if (progress > 90) progress = 90;
                progressBar.style.width = progress + '%';
                
                if (progress < 30) {
                    statusText.textContent = '正在上传文件...';
                } else if (progress < 60) {
                    statusText.textContent = '正在解析文件内容...';
                } else if (progress < 90) {
                    statusText.textContent = '正在生成知识库...';
                }
            }, 500);

            const response = await fetch('/api/knowledge/upload', {
                method: 'POST',
                body: formData
            });

            clearInterval(progressInterval);
            progressBar.style.width = '100%';
            statusText.textContent = '处理完成！';

            const data = await response.json();
            
            setTimeout(() => {
                progressDiv.style.display = 'none';
                
                if (data.success) {
                    this.showNotification(`文件处理成功，生成了 ${data.knowledge_count || 0} 条知识`, 'success');
                    bootstrap.Modal.getInstance(document.getElementById('uploadFileModal')).hide();
                    document.getElementById('file-upload-form').reset();
                    this.loadKnowledge();
                } else {
                    this.showNotification(data.error || '文件处理失败', 'error');
                }
            }, 1000);

        } catch (error) {
            console.error('文件上传失败:', error);
            progressDiv.style.display = 'none';
            this.showNotification('文件上传失败', 'error');
        }
    }

    async verifyKnowledge(knowledgeId) {
        try {
            const response = await fetch(`/api/knowledge/verify/${knowledgeId}`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    verified_by: 'admin'
                })
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('知识库验证成功', 'success');
                this.loadKnowledge();
            } else {
                this.showNotification('知识库验证失败', 'error');
            }
        } catch (error) {
            console.error('验证知识库失败:', error);
            this.showNotification('验证知识库失败', 'error');
        }
    }

    async unverifyKnowledge(knowledgeId) {
        try {
            const response = await fetch(`/api/knowledge/unverify/${knowledgeId}`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                }
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('取消验证成功', 'success');
                this.loadKnowledge();
            } else {
                this.showNotification('取消验证失败', 'error');
            }
        } catch (error) {
            console.error('取消验证失败:', error);
            this.showNotification('取消验证失败', 'error');
        }
    }

    async deleteKnowledge(knowledgeId) {
        if (!confirm('确定要删除这条知识库条目吗？')) {
            return;
        }

        try {
            const response = await fetch(`/api/knowledge/delete/${knowledgeId}`, {
                method: 'DELETE'
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('知识库删除成功', 'success');
                this.loadKnowledge();
            } else {
                this.showNotification('知识库删除失败', 'error');
            }
        } catch (error) {
            console.error('删除知识库失败:', error);
            this.showNotification('删除知识库失败', 'error');
        }
    }

    // 工单管理
    async loadWorkOrders() {
        try {
            const statusFilter = document.getElementById('workorder-status-filter').value;
            const priorityFilter = document.getElementById('workorder-priority-filter').value;
            
            let url = '/api/workorders';
            const params = new URLSearchParams();
            if (statusFilter !== 'all') params.append('status', statusFilter);
            if (priorityFilter !== 'all') params.append('priority', priorityFilter);
            if (params.toString()) url += '?' + params.toString();

            const response = await fetch(url);
            const workorders = await response.json();
            this.updateWorkOrdersDisplay(workorders);
            this.updateWorkOrderStatistics(workorders);
        } catch (error) {
            console.error('加载工单失败:', error);
        }
    }

    updateWorkOrdersDisplay(workorders) {
        const container = document.getElementById('workorders-list');
        
        if (workorders.length === 0) {
            container.innerHTML = '<div class="empty-state"><i class="fas fa-tasks"></i><p>暂无工单</p></div>';
            return;
        }

        const workordersHtml = workorders.map(workorder => `
            <div class="work-order-item">
                <div class="d-flex justify-content-between align-items-start">
                    <div class="flex-grow-1">
                        <h6 class="mb-1">${workorder.title}</h6>
                        <p class="text-muted mb-2">${workorder.description}</p>
                        <div class="d-flex gap-3">
                            <span class="badge bg-${this.getPriorityColor(workorder.priority)}">${this.getPriorityText(workorder.priority)}</span>
                            <span class="badge bg-${this.getStatusColor(workorder.status)}">${this.getStatusText(workorder.status)}</span>
                            <small class="text-muted">分类: ${workorder.category}</small>
                            <small class="text-muted">创建时间: ${new Date(workorder.created_at).toLocaleString()}</small>
                        </div>
                    </div>
                    <div class="ms-3">
                        <button class="btn btn-sm btn-outline-primary" onclick="dashboard.updateWorkOrder(${workorder.id})">
                            <i class="fas fa-edit"></i>
                        </button>
                    </div>
                </div>
            </div>
        `).join('');

        container.innerHTML = workordersHtml;
    }

    updateWorkOrderStatistics(workorders) {
        const stats = workorders.reduce((acc, wo) => {
            acc.total = (acc.total || 0) + 1;
            acc[wo.status] = (acc[wo.status] || 0) + 1;
            return acc;
        }, {});

        document.getElementById('workorders-total').textContent = stats.total || 0;
        document.getElementById('workorders-open').textContent = stats.open || 0;
        document.getElementById('workorders-progress').textContent = stats.in_progress || 0;
        document.getElementById('workorders-resolved').textContent = stats.resolved || 0;
    }

    async createWorkOrder() {
        const title = document.getElementById('wo-title').value.trim();
        const description = document.getElementById('wo-description').value.trim();
        const category = document.getElementById('wo-category').value;
        const priority = document.getElementById('wo-priority').value;

        if (!title || !description) {
            this.showNotification('请填写完整信息', 'warning');
            return;
        }

        try {
            const response = await fetch('/api/workorders', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    title,
                    description,
                    category,
                    priority
                })
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('工单创建成功', 'success');
                bootstrap.Modal.getInstance(document.getElementById('createWorkOrderModal')).hide();
                document.getElementById('work-order-form').reset();
                this.loadWorkOrders();
            } else {
                this.showNotification('创建工单失败', 'error');
            }
        } catch (error) {
            console.error('创建工单失败:', error);
            this.showNotification('创建工单失败', 'error');
        }
    }

    // 数据分析
    async loadAnalytics() {
        try {
            const response = await fetch('/api/analytics');
            const analytics = await response.json();
            this.updateAnalyticsDisplay(analytics);
        } catch (error) {
            console.error('加载分析数据失败:', error);
        }
    }

    updateAnalyticsDisplay(analytics) {
        // 更新分析报告
        const reportContainer = document.getElementById('analytics-report');
        if (analytics.summary) {
            reportContainer.innerHTML = `
                <div class="row">
                    <div class="col-md-6">
                        <h6>性能指标</h6>
                        <ul class="list-unstyled">
                            <li>总工单数: ${analytics.summary.total_orders || 0}</li>
                            <li>解决率: ${Math.round((analytics.summary.resolution_rate || 0) * 100)}%</li>
                            <li>平均解决时间: ${analytics.summary.avg_resolution_time_hours || 0}小时</li>
                            <li>平均满意度: ${analytics.summary.avg_satisfaction || 0}</li>
                        </ul>
                    </div>
                    <div class="col-md-6">
                        <h6>趋势分析</h6>
                        <ul class="list-unstyled">
                            <li>工单趋势: ${analytics.summary.trends?.orders_trend ? '上升' : '下降'}</li>
                            <li>满意度趋势: ${analytics.summary.trends?.satisfaction_trend ? '上升' : '下降'}</li>
                            <li>解决时间趋势: ${analytics.summary.trends?.resolution_time_trend ? '上升' : '下降'}</li>
                        </ul>
                    </div>
                </div>
            `;
        }

        // 更新类别分布图
        if (analytics.category_distribution && this.charts.category) {
            const labels = Object.keys(analytics.category_distribution);
            const data = Object.values(analytics.category_distribution);
            
            this.charts.category.data.labels = labels;
            this.charts.category.data.datasets[0].data = data;
            this.charts.category.update();
        }
    }

    // 系统设置
    async loadSettings() {
        try {
            const response = await fetch('/api/settings');
            const settings = await response.json();
            this.updateSettingsDisplay(settings);
        } catch (error) {
            console.error('加载设置失败:', error);
        }
    }

    updateSettingsDisplay(settings) {
        if (settings.api_timeout) document.getElementById('api-timeout').value = settings.api_timeout;
        if (settings.max_history) document.getElementById('max-history').value = settings.max_history;
        if (settings.refresh_interval) document.getElementById('refresh-interval').value = settings.refresh_interval;
        if (settings.auto_monitoring !== undefined) document.getElementById('auto-monitoring').checked = settings.auto_monitoring;
        if (settings.agent_mode !== undefined) document.getElementById('agent-mode').checked = settings.agent_mode;
    }

    async saveSystemSettings() {
        const settings = {
            api_timeout: parseInt(document.getElementById('api-timeout').value),
            max_history: parseInt(document.getElementById('max-history').value),
            refresh_interval: parseInt(document.getElementById('refresh-interval').value),
            auto_monitoring: document.getElementById('auto-monitoring').checked,
            agent_mode: document.getElementById('agent-mode').checked
        };

        try {
            const response = await fetch('/api/settings', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify(settings)
            });

            const data = await response.json();
            if (data.success) {
                this.showNotification('设置保存成功', 'success');
            } else {
                this.showNotification('保存设置失败', 'error');
            }
        } catch (error) {
            console.error('保存设置失败:', error);
            this.showNotification('保存设置失败', 'error');
        }
    }

    async loadSystemInfo() {
        try {
            const response = await fetch('/api/system/info');
            const info = await response.json();
            this.updateSystemInfoDisplay(info);
        } catch (error) {
            console.error('加载系统信息失败:', error);
        }
    }

    updateSystemInfoDisplay(info) {
        const container = document.getElementById('system-info');
        container.innerHTML = `
            <div class="mb-3">
                <strong>系统版本:</strong> ${info.version || '1.0.0'}
            </div>
            <div class="mb-3">
                <strong>Python版本:</strong> ${info.python_version || '未知'}
            </div>
            <div class="mb-3">
                <strong>数据库:</strong> ${info.database || 'SQLite'}
            </div>
            <div class="mb-3">
                <strong>运行时间:</strong> ${info.uptime || '未知'}
            </div>
            <div class="mb-3">
                <strong>内存使用:</strong> ${info.memory_usage || '0'} MB
            </div>
        `;
    }

    // 工具函数
    getLevelText(level) {
        const levelMap = {
            'critical': '严重',
            'error': '错误',
            'warning': '警告',
            'info': '信息'
        };
        return levelMap[level] || level;
    }

    getTypeText(type) {
        const typeMap = {
            'performance': '性能',
            'quality': '质量',
            'volume': '量级',
            'system': '系统',
            'business': '业务'
        };
        return typeMap[type] || type;
    }

    getAlertColor(level) {
        const colorMap = {
            'critical': 'danger',
            'error': 'danger',
            'warning': 'warning',
            'info': 'info'
        };
        return colorMap[level] || 'secondary';
    }

    getPriorityText(priority) {
        const priorityMap = {
            'low': '低',
            'medium': '中',
            'high': '高',
            'urgent': '紧急'
        };
        return priorityMap[priority] || priority;
    }

    getPriorityColor(priority) {
        const colorMap = {
            'low': 'secondary',
            'medium': 'primary',
            'high': 'warning',
            'urgent': 'danger'
        };
        return colorMap[priority] || 'secondary';
    }

    getStatusText(status) {
        const statusMap = {
            'open': '待处理',
            'in_progress': '处理中',
            'resolved': '已解决',
            'closed': '已关闭'
        };
        return statusMap[status] || status;
    }

    getStatusColor(status) {
        const colorMap = {
            'open': 'warning',
            'in_progress': 'info',
            'resolved': 'success',
            'closed': 'secondary'
        };
        return colorMap[status] || 'secondary';
    }

    formatTime(timestamp) {
        const date = new Date(timestamp);
        const now = new Date();
        const diff = now - date;
        
        if (diff < 60000) { // 1分钟内
            return '刚刚';
        } else if (diff < 3600000) { // 1小时内
            return `${Math.floor(diff / 60000)}分钟前`;
        } else if (diff < 86400000) { // 1天内
            return `${Math.floor(diff / 3600000)}小时前`;
        } else {
            return date.toLocaleDateString();
        }
    }

    showNotification(message, type = 'info') {
        const notification = document.createElement('div');
        notification.className = `notification alert alert-${type === 'error' ? 'danger' : type} alert-dismissible fade show`;
        notification.innerHTML = `
            ${message}
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        `;
        
        document.body.appendChild(notification);
        
        setTimeout(() => {
            if (notification.parentNode) {
                notification.parentNode.removeChild(notification);
            }
        }, 3000);
    }

    showCreateWorkOrderModal() {
        const modal = new bootstrap.Modal(document.getElementById('createWorkOrderModal'));
        modal.show();
    }
}

// 初始化应用
let dashboard;
document.addEventListener('DOMContentLoaded', () => {
    dashboard = new TSPDashboard();
});