XNSim/XNSimHtml/components/network-monitor.js

/**
 * @class NetworkMonitor
 * @description 网络监控组件，用于监控系统网络状态和UDP数据抓包
 */
class NetworkMonitor extends HTMLElement {
    constructor() {
        super();
        this.attachShadow({ mode: 'open' });
        this.state = {
            ip: '127.0.0.1',
            port: 54321,
            isMonitoring: false,
            data: [],
            timer: null,
            statusMsg: '',
        };
    }

    connectedCallback() {
        this.render();
        this.initialize();
    }

    disconnectedCallback() {
        if (this.state.timer) {
            clearInterval(this.state.timer);
        }
    }

    render() {
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    font-family: 'Segoe UI', 'PingFang SC', Arial, sans-serif;
                    background: #f4f6fa;
                    border-radius: 12px;
                    box-shadow: 0 2px 12px rgba(0,0,0,0.07);
                    padding: 24px 20px 20px 20px;
                    max-width: 600px;
                }
                .form-row {
                    display: flex;
                    align-items: center;
                    gap: 16px;
                    margin-bottom: 18px;
                }
                label {
                    font-size: 15px;
                    color: #333;
                }
                input[type="text"], input[type="number"] {
                    border: 1px solid #d0d7de;
                    border-radius: 6px;
                    padding: 6px 12px;
                    font-size: 15px;
                    outline: none;
                    transition: border 0.2s;
                    background: #fff;
                    margin-left: 4px;
                }
                input[type="text"]:focus, input[type="number"]:focus {
                    border: 1.5px solid #409eff;
                }
                .status {
                    display: flex;
                    align-items: center;
                    background: #eaf6ff;
                    color: #1976d2;
                    border-radius: 8px;
                    padding: 8px 14px;
                    margin-bottom: 16px;
                    font-size: 15px;
                    font-weight: 500;
                    box-shadow: 0 1px 4px rgba(64,158,255,0.07);
                }
                .status::before {
                    content: '\u26A1';
                    margin-right: 8px;
                    font-size: 18px;
                }
                button {
                    border: none;
                    border-radius: 6px;
                    padding: 7px 20px;
                    font-size: 15px;
                    cursor: pointer;
                    transition: background 0.2s, box-shadow 0.2s;
                    box-shadow: 0 1px 4px rgba(64,158,255,0.07);
                }
                #startBtn {
                    background: linear-gradient(90deg, #409eff 60%, #66b1ff 100%);
                    color: #fff;
                    font-weight: 600;
                }
                #startBtn:hover {
                    background: linear-gradient(90deg, #1976d2 60%, #409eff 100%);
                }
                #stopBtn {
                    background: #fff0f0;
                    color: #e53935;
                    font-weight: 600;
                    border: 1px solid #ffcdd2;
                }
                #stopBtn:hover {
                    background: #ffcdd2;
                }
                .monitor-status {
                    margin-bottom: 14px;
                    font-size: 15px;
                    color: #666;
                }
                .monitor-status span {
                    font-weight: bold;
                    color: #43a047;
                }
                .monitor-status span.stopped {
                    color: #e53935;
                }
                .data-list {
                    max-height: 340px;
                    overflow-y: auto;
                    background: #fff;
                    border-radius: 10px;
                    border: 1px solid #e0e3e7;
                    padding: 10px 0 10px 0;
                    box-shadow: 0 1px 6px rgba(0,0,0,0.04);
                }
                .data-item {
                    background: #f8fafc;
                    border-radius: 8px;
                    margin: 10px 16px;
                    padding: 10px 14px 8px 14px;
                    box-shadow: 0 1px 3px rgba(64,158,255,0.04);
                    border-left: 4px solid #409eff;
                    font-size: 14px;
                    transition: box-shadow 0.2s;
                }
                .data-item:hover {
                    box-shadow: 0 2px 8px rgba(64,158,255,0.13);
                }
                .data-item b {
                    color: #1976d2;
                }
                .data-item pre {
                    background: #f3f7fa;
                    border-radius: 4px;
                    padding: 4px 6px;
                    margin: 2px 0 0 0;
                    font-size: 13px;
                    color: #333;
                }
                .nodata {
                    color: #bbb;
                    text-align: center;
                    padding: 30px 0;
                }
            </style>
            <div class="status">${this.state.statusMsg}</div>
            <div class="form-row">
                <label>IP: <input type="text" id="ip" value="${this.state.ip}" /></label>
                <label>端口: <input type="number" id="port" value="${this.state.port}" min="1024" max="65535" /></label>
                <button id="startBtn">开始抓包</button>
                <button id="stopBtn">停止抓包</button>
            </div>
            <div class="monitor-status">抓包状态：<span id="monitorStatus" class="${this.state.isMonitoring ? '' : 'stopped'}">${this.state.isMonitoring ? '运行中' : '已停止'}</span></div>
            <div class="data-list" id="dataList"></div>
        `;
        this.shadowRoot.getElementById('startBtn').onclick = () => this.startMonitor();
        this.shadowRoot.getElementById('stopBtn').onclick = () => this.stopMonitor();
        this.shadowRoot.getElementById('ip').onchange = (e) => {
            this.state.ip = e.target.value;
        };
        this.shadowRoot.getElementById('port').onchange = (e) => {
            this.state.port = parseInt(e.target.value, 10);
        };
        this.renderDataList();
    }

    renderDataList() {
        const dataList = this.shadowRoot.getElementById('dataList');
        if (!dataList) return;
        if (!this.state.data.length) {
            dataList.innerHTML = '<div class="nodata">暂无数据</div>';
            return;
        }
        dataList.innerHTML = this.state.data.map(item => `
            <div class="data-item">
                <div><b>时间:</b> ${new Date(item.timestamp).toLocaleString()}</div>
                <div><b>来源:</b> ${item.source}</div>
                <div><b>内容:</b> <pre>${typeof item.data === 'object' ? JSON.stringify(item.data, null, 2) : item.data}</pre></div>
            </div>
        `).join('');
    }

    setStatus(msg) {
        this.state.statusMsg = msg;
        this.render();
    }

    async startMonitor() {
        this.setStatus('正在启动UDP抓包...');
        try {
            const res = await fetch('/api/udp-monitor/start', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ ip: this.state.ip, port: this.state.port })
            });
            const data = await res.json();
            if (data.success) {
                this.state.isMonitoring = true;
                this.setStatus(data.message || 'UDP抓包已启动');
                this.startPolling();
            } else {
                this.state.isMonitoring = false;
                this.setStatus(data.error || '启动失败');
            }
        } catch (e) {
            this.state.isMonitoring = false;
            this.setStatus('启动UDP抓包失败: ' + e.message);
        }
        this.render();
    }

    async stopMonitor() {
        this.setStatus('正在停止UDP抓包...');
        try {
            const res = await fetch('/api/udp-monitor/stop', { method: 'POST' });
            const data = await res.json();
            this.state.isMonitoring = false;
            this.setStatus(data.message || 'UDP抓包已停止');
            if (this.state.timer) {
                clearInterval(this.state.timer);
                this.state.timer = null;
            }
        } catch (e) {
            this.setStatus('停止UDP抓包失败: ' + e.message);
        }
        this.render();
    }

    startPolling() {
        if (this.state.timer) clearInterval(this.state.timer);
        this.state.timer = setInterval(() => this.fetchData(), 1000);
    }

    async fetchData() {
        if (!this.state.isMonitoring) return;
        try {
            const res = await fetch('/api/udp-monitor/data');
            const data = await res.json();
            if (data.success) {
                if (Array.isArray(data.data) && data.data.length > 0) {
                    this.state.data = this.state.data.concat(data.data);
                    // 最多只保留1000条
                    if (this.state.data.length > 1000) {
                        this.state.data = this.state.data.slice(-1000);
                    }
                    this.renderDataList();
                }
                this.state.isMonitoring = data.isMonitoring;
                this.shadowRoot.getElementById('monitorStatus').textContent = data.isMonitoring ? '运行中' : '已停止';
            }
        } catch (e) {
            this.setStatus('获取UDP数据失败: ' + e.message);
        }
    }

    initialize() {
        this.setStatus('请设置IP和端口后点击开始抓包');
        // 检查当前监控状态
        fetch('/api/udp-monitor/status').then(res => res.json()).then(data => {
            if (data.success && data.isMonitoring) {
                this.state.isMonitoring = true;
                this.state.ip = data.ip || this.state.ip;
                this.state.port = data.port || this.state.port;
                this.setStatus('UDP抓包已在运行');
                this.startPolling();
                this.render();
            }
        });
    }

    reactivate() {
        this.initialize();
    }
}

customElements.define('network-monitor', NetworkMonitor);