{% extends "base.html" %}
{% block title %}历史记录 — Palladium Monitor{% endblock %}

{% block content %}
<div class="section-header">
    <h2>📅 历史快照</h2>
    <div class="header-actions">
        <button class="btn btn-sm btn-secondary" onclick="openExportModal()">📤 导出</button>
        <button class="btn btn-sm btn-secondary" onclick="cleanupOld()">🧹 清理30天前数据</button>
    </div>
</div>

{% if pagination.items %}
<div class="card">
    <table class="data-table">
        <thead>
            <tr>
                <th>ID</th>
                <th>时间</th>
                <th>仿真器</th>
                <th>系统状态</th>
                <th>逻辑板</th>
                <th>逻辑板利用率</th>
                <th>使用/总数</th>
                <th>作业数</th>
                <th>来源</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>
            {% for snap in pagination.items %}
            <tr>
                <td>{{ snap.id }}</td>
                <td class="text-mono">{{ snap.timestamp | fmt_time }}</td>
                <td>{{ snap.emulator }}</td>
                <td>
                    {% set ss = snap.system_status.upper() %}
                    {% if ss == 'OK' %}
                        <span class="status-badge status-ok">{{ snap.system_status }}</span>
                    {% elif 'PARTIAL' in ss %}
                        <span class="status-badge status-warning">{{ snap.system_status }}</span>
                    {% elif 'DOWN' in ss or 'ERROR' in ss %}
                        <span class="status-badge status-error">{{ snap.system_status }}</span>
                    {% else %}
                        <span class="status-badge status-unknown">{{ snap.system_status }}</span>
                    {% endif %}
                </td>
                <td>
                    {{ snap.total_boards }}
                    <span class="text-green">({{ snap.online_boards }}</span>/<span class="text-red">{{ snap.offline_boards }})</span>
                </td>
                <td>
                    <div class="util-bar">
                        <div class="util-fill" style="width: {{ snap.utilization }}%"></div>
                        <span class="util-text">{{ snap.utilization }}%</span>
                    </div>
                </td>
                <td class="text-mono">{{ snap.used_boards }} / {{ snap.total_boards }}</td>
                <td>{{ snap.active_jobs }}</td>
                <td><span class="tag">{{ snap.source }}</span></td>
                <td>
                    <a href="{{ url_for('snapshot_detail', sid=snap.id) }}" class="btn-sm">查看</a>
                    <form method="POST" action="{{ url_for('delete_snapshot', sid=snap.id) }}"
                          style="display:inline;" onsubmit="return confirm('确认删除快照 #{{ snap.id }}?')">
                        <button type="submit" class="btn-sm btn-danger">删除</button>
                    </form>
                </td>
            </tr>
            {% endfor %}
        </tbody>
    </table>
</div>

<!-- 分页 -->
<div class="pagination">
    {% if pagination.has_prev %}
        <a href="{{ url_for('history', page=pagination.prev_num) }}" class="page-btn">← 上一页</a>
    {% endif %}
    <span class="page-info">第 {{ pagination.page }} / {{ pagination.pages }} 页 (共 {{ pagination.total }} 条)</span>
    {% if pagination.has_next %}
        <a href="{{ url_for('history', page=pagination.next_num) }}" class="page-btn">下一页 →</a>
    {% endif %}
</div>

{% else %}
<div class="card empty-state">暂无历史数据</div>
{% endif %}

<script>
function cleanupOld() {
    if (!confirm('确认清理30天前的历史数据？此操作不可撤销。')) return;
    fetch('/api/cleanup?days=30', { method: 'POST' })
        .then(r => r.json())
        .then(data => {
            alert('已清理 ' + data.deleted + ' 条快照');
            location.reload();
        })
        .catch(e => alert('清理失败: ' + e));
}

// ─── 导出 ──────────────────────────────────────────────────────
function openExportModal() {
    const m = document.getElementById('exportModal');
    if (!m) return;
    m.style.display = 'flex';
}
function closeExportModal() {
    const m = document.getElementById('exportModal');
    if (m) m.style.display = 'none';
}
function doExport() {
    const fmt     = document.getElementById('expFormat').value;
    const range   = document.getElementById('expRange').value;
    const since   = document.getElementById('expSince').value;
    const until   = document.getElementById('expUntil').value;
    const source  = document.getElementById('expSource').value.trim();

    const params = new URLSearchParams();
    params.set('format', fmt);
    if (range !== 'all') params.set('days', range);
    if (range === 'custom') {
        if (since) params.set('since', since);
        if (until) params.set('until', until);
    }
    if (source) params.set('source', source);

    const url = '/api/export?' + params.toString();
    // 触发浏览器下载
    window.location.href = url;
    setTimeout(closeExportModal, 300);
}
function toggleRangeFields() {
    const v = document.getElementById('expRange').value;
    const custom = document.getElementById('expCustomRange');
    if (custom) custom.style.display = (v === 'custom') ? 'flex' : 'none';
}
</script>

<!-- 导出弹窗 -->
<div id="exportModal" class="modal-overlay" style="display:none;">
    <div class="modal" style="max-width: 480px;">
        <div class="modal-header">
            <h2>📤 导出历史快照</h2>
            <button class="modal-close" onclick="closeExportModal()">✕</button>
        </div>
        <div class="modal-body">
            <div class="form-group">
                <label>格式</label>
                <select id="expFormat" class="form-control">
                    <option value="csv">CSV (Excel 友好, 带 UTF-8 BOM)</option>
                    <option value="json">JSON (程序处理)</option>
                </select>
            </div>
            <div class="form-group">
                <label>时间范围</label>
                <select id="expRange" class="form-control" onchange="toggleRangeFields()">
                    <option value="all">全部</option>
                    <option value="1">最近 1 天</option>
                    <option value="7" selected>最近 7 天</option>
                    <option value="30">最近 30 天</option>
                    <option value="90">最近 90 天</option>
                    <option value="custom">自定义…</option>
                </select>
            </div>
            <div id="expCustomRange" class="form-row" style="display:none;">
                <div class="form-group">
                    <label>起始 (含)</label>
                    <input type="date" id="expSince" class="form-control">
                </div>
                <div class="form-group">
                    <label>截止 (含)</label>
                    <input type="date" id="expUntil" class="form-control">
                </div>
            </div>
            <div class="form-group">
                <label>来源过滤 (模糊匹配, 可空)</label>
                <input type="text" id="expSource" class="form-control"
                       placeholder="例如: collect.py、scmp03、sample">
            </div>
            <p class="modal-hint">
                导出上限 10 万条; 超过会自动截断。<br>
                CSV 默认包含 19 列: 时间(本地+UTC)、仿真器/硬件/ConfigMgr、系统状态、来源、板/域计数、利用率(1 位小数)、作业数等。
            </p>
        </div>
        <div class="modal-footer">
            <button type="button" class="btn btn-secondary" onclick="closeExportModal()">取消</button>
            <button type="button" class="btn btn-primary" onclick="doExport()">📥 下载</button>
        </div>
    </div>
</div>
<script>
document.getElementById('exportModal')?.addEventListener('click', function(e) {
    if (e.target === this) closeExportModal();
});
</script>
{% endblock %}