{% extends "base.html" %}
{% block title %}自动签名系统 - 日志{% endblock %}
{% block content %}
<div style="display:flex;flex-direction:column;height:100%;">
    <div class="log-toolbar">
        <span style="font-size:13px;font-weight:600;color:#1a237e;"><i class="bi bi-terminal"></i> 系统日志</span>
        <select class="form-select" id="logSourceFilter">
            <option value="all">全部来源</option>
            <option value="前端操作">前端操作</option>
            <option value="外部API">外部API</option>
        </select>
        <select class="form-select" id="logLevelFilter">
            <option value="all">全部级别</option>
            <option value="INFO">INFO</option>
            <option value="WARN">WARN</option>
            <option value="ERROR">ERROR</option>
        </select>
        <input type="text" class="form-control" id="logKeyword" placeholder="关键字搜索" style="width:200px;">
        <div class="form-check form-check-inline ms-2">
            <input class="form-check-input" type="checkbox" id="autoScroll" checked>
            <label class="form-check-label" for="autoScroll" style="font-size:12px;">自动滚动</label>
        </div>
        <button class="btn btn-outline-secondary btn-sm" id="btnClearLog"><i class="bi bi-trash"></i> 清空</button>
        <button class="btn btn-outline-danger btn-sm" id="btnLocateError"><i class="bi bi-exclamation-triangle"></i> 定位异常</button>
        <span class="ms-auto" style="font-size:12px;color:#757575;" id="logCount">0 条</span>
    </div>
    <div class="log-content" id="logContent"></div>
</div>
{% endblock %}

{% block extra_js %}
<script>
(function() {
    const logContent = document.getElementById('logContent');
    const logSourceFilter = document.getElementById('logSourceFilter');
    const logLevelFilter = document.getElementById('logLevelFilter');
    const logKeyword = document.getElementById('logKeyword');
    const autoScroll = document.getElementById('autoScroll');
    const logCountEl = document.getElementById('logCount');
    let allLogs = [];
    let logId = 0;

    function addLogEntry(level, source, message) {
        logId++;
        const entry = { id: logId, level, source, message, time: new Date() };
        allLogs.push(entry);
        renderEntry(entry);
        logCountEl.textContent = allLogs.length + ' 条';
    }

    function renderEntry(entry) {
        if (!matchFilter(entry)) return;
        const div = document.createElement('div');
        div.className = `log-entry level-${entry.level}`;
        div.dataset.id = entry.id;
        div.dataset.level = entry.level;
        div.dataset.source = entry.source;

        const sourceClass = entry.source === '外部API' ? 'log-source-api' : 'log-source-frontend';
        const timeStr = entry.time.toLocaleTimeString('zh-CN', { hour12: false });

        div.innerHTML = `<span class="log-timestamp">[${timeStr}]</span> <span class="${sourceClass}">[${entry.source}]</span> <span style="font-weight:600;">[${entry.level}]</span> ${escapeHtml(entry.message)}`;
        logContent.appendChild(div);

        if (autoScroll.checked) {
            logContent.scrollTop = logContent.scrollHeight;
        }
    }

    function matchFilter(entry) {
        const src = logSourceFilter.value;
        const lvl = logLevelFilter.value;
        const kw = logKeyword.value.trim().toLowerCase();
        if (src !== 'all' && entry.source !== src) return false;
        if (lvl !== 'all' && entry.level !== lvl) return false;
        if (kw && !entry.message.toLowerCase().includes(kw)) return false;
        return true;
    }

    function rerenderAll() {
        logContent.innerHTML = '';
        allLogs.forEach(entry => renderEntry(entry));
    }

    logSourceFilter.addEventListener('change', rerenderAll);
    logLevelFilter.addEventListener('change', rerenderAll);
    logKeyword.addEventListener('input', rerenderAll);

    document.getElementById('btnClearLog').addEventListener('click', function() {
        allLogs = [];
        logContent.innerHTML = '';
        logCountEl.textContent = '0 条';
    });

    document.getElementById('btnLocateError').addEventListener('click', function() {
        const errorEntries = logContent.querySelectorAll('.level-ERROR');
        if (errorEntries.length > 0) {
            errorEntries.forEach(e => e.classList.remove('highlight-error'));
            const last = errorEntries[errorEntries.length - 1];
            last.scrollIntoView({ behavior: 'smooth', block: 'center' });
            last.classList.add('highlight-error');
        } else {
            alert('没有发现异常日志');
        }
    });

    const evtSource = new EventSource('/api/logs/stream');
    evtSource.onmessage = function(event) {
        try {
            const data = JSON.parse(event.data);
            addLogEntry(data.level || 'INFO', data.source || '系统', data.message || '');
        } catch (e) {
            addLogEntry('INFO', '系统', event.data);
        }
    };
    evtSource.onerror = function() {
        addLogEntry('WARN', '系统', '日志流连接断开，5秒后重连...');
    };

    addLogEntry('INFO', '系统', '日志页面已加载，正在监听系统日志...');
})();
</script>
{% endblock %}