{% extends 'admin/base.html' %}

{% block title %}数据备份{% endblock %}
{% block page_title %}数据备份管理{% endblock %}

{% block extra_css %}
<style>
.backup-section {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.backup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.backup-header h2 {
    margin: 0;
    font-size: 1.2em;
}

.backup-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
}

.stat-item {
    background: #f8f9fa;
    padding: 15px 25px;
    border-radius: 8px;
    text-align: center;
}

.stat-item .value {
    font-size: 1.8em;
    font-weight: 600;
    color: var(--admin-primary);
}

.stat-item .label {
    font-size: 0.85em;
    color: #666;
    margin-top: 5px;
}

.backup-actions {
    background: #e8f4fc;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.backup-actions .action-info {
    flex: 1;
}

.backup-actions h3 {
    margin: 0 0 8px 0;
    font-size: 1.1em;
}

.backup-actions p {
    margin: 0;
    color: #666;
    font-size: 0.9em;
}

.backup-list {
    margin-top: 20px;
}

.backup-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    margin-bottom: 10px;
    transition: all 0.2s;
}

.backup-item:hover {
    border-color: var(--admin-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.backup-info {
    display: flex;
    gap: 20px;
    align-items: center;
}

.backup-info .icon {
    font-size: 2em;
}

.backup-info .details {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.backup-info .filename {
    font-weight: 500;
    color: #333;
}

.backup-info .meta {
    font-size: 0.85em;
    color: #666;
    display: flex;
    gap: 15px;
}

.backup-actions-buttons {
    display: flex;
    gap: 10px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: #666;
    background: #f8f9fa;
    border-radius: 8px;
}

.empty-state .icon {
    font-size: 3em;
    margin-bottom: 15px;
}

/* 备份中状态 */
.backup-item.processing {
    opacity: 0.6;
    pointer-events: none;
}
</style>
{% endblock %}

{% block extra_js %}
<script>
function createBackup() {
    const btn = document.getElementById('create-backup-btn');
    const originalText = btn.textContent;
    
    btn.textContent = '⏳ 备份中...';
    btn.disabled = true;
    
    fetch('{{ url_for("admin.backup_create") }}', {
        method: 'POST'
    })
    .then(res => res.json())
    .then(data => {
        btn.textContent = originalText;
        btn.disabled = false;
        
        if (data.success) {
            alert('✅ 备份成功！\n\n文件: ' + data.backup.filename + '\n大小: ' + data.backup.size);
            location.reload();
        } else {
            alert('❌ 备份失败: ' + data.message);
        }
    })
    .catch(err => {
        btn.textContent = originalText;
        btn.disabled = false;
        alert('备份失败: ' + err.message);
    });
}

function deleteBackup(filename) {
    if (!confirm('确定要删除备份文件 ' + filename + ' 吗？')) {
        return;
    }
    
    fetch('/admin/backup/delete/' + filename, {
        method: 'POST'
    })
    .then(res => res.json())
    .then(data => {
        if (data.success) {
            location.reload();
        } else {
            alert('删除失败: ' + data.message);
        }
    });
}
</script>
{% endblock %}

{% block content %}
<div class="backup-section">
    <div class="backup-header">
        <h2>📊 备份概览</h2>
    </div>
    
    <div class="backup-stats">
        <div class="stat-item">
            <div class="value">{{ stats.total_backups }}</div>
            <div class="label">备份文件数</div>
        </div>
        <div class="stat-item">
            <div class="value">{{ (stats.total_size / 1024 / 1024) | round(2) }} MB</div>
            <div class="label">备份总大小</div>
        </div>
    </div>
    
    <div class="backup-actions">
        <div class="action-info">
            <h3>💾 创建新备份</h3>
            <p>一键备份网站数据库和所有上传的图片附件资源，打包成 ZIP 文件保存。</p>
        </div>
        <button id="create-backup-btn" onclick="createBackup()" class="btn btn-primary">
            📦 立即备份
        </button>
    </div>
    
    <div class="backup-list">
        <h3 style="margin-bottom: 15px;">备份文件列表</h3>
        
        {% if backups %}
        {% for backup in backups %}
        <div class="backup-item">
            <div class="backup-info">
                <div class="icon">📦</div>
                <div class="details">
                    <div class="filename">{{ backup.filename }}</div>
                    <div class="meta">
                        <span>📅 {{ backup.created_at.strftime('%Y-%m-%d %H:%M') }}</span>
                        <span>💾 {{ (backup.size / 1024) | round(1) }} KB</span>
                    </div>
                </div>
            </div>
            <div class="backup-actions-buttons">
                <a href="{{ url_for('admin.backup_download', filename=backup.filename) }}" 
                   class="btn btn-sm" target="_blank">📥 下载</a>
                <button onclick="deleteBackup('{{ backup.filename }}')" 
                        class="btn btn-sm btn-danger">🗑️ 删除</button>
            </div>
        </div>
        {% endfor %}
        {% else %}
        <div class="empty-state">
            <div class="icon">📭</div>
            <p>暂无备份文件</p>
            <p style="margin-top: 10px; font-size: 0.9em;">点击上方"立即备份"按钮创建第一个备份</p>
        </div>
        {% endif %}
    </div>
</div>

<div style="background: #fff3cd; border-radius: 8px; padding: 15px; margin-top: 20px;">
    <h4 style="margin: 0 0 10px 0;">⚠️ 注意事项</h4>
    <ul style="margin: 0; padding-left: 20px; font-size: 0.9em; color: #856404;">
        <li>备份包含数据库文件和上传的图片附件</li>
        <li>备份文件保存在服务器的 <code>backups/</code> 目录</li>
        <li>建议定期备份并下载到本地保存</li>
        <li>恢复数据需要手动解压并替换相应文件</li>
    </ul>
</div>
{% endblock %}