{% extends "base.html" %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h2><i class="bi bi-people"></i> 用户管理</h2>
    <div>
        {% if current_user.is_admin() %}
        <button class="btn btn-success" onclick="exportUsers()">
            <i class="bi bi-download"></i> 导出Excel
        </button>
        <button class="btn btn-warning" data-bs-toggle="modal" data-bs-target="#importUserModal">
            <i class="bi bi-upload"></i> 导入Excel
        </button>
        <a href="{{ url_for('new_user') }}" class="btn btn-primary ms-2">
            <i class="bi bi-person-plus"></i> 添加用户
        </a>
        {% endif %}
    </div>
</div>

<div class="card">
    <div class="card-body p-0">
        <div class="table-responsive">
            <table class="table table-hover">
                <thead>
                    <tr>
                        <th>ID</th>
                        <th>用户名</th>
                        <th>真实姓名</th>
                        <th>部门</th>
                        <th>角色</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    {% for u in users %}
                    <tr>
                        <td>{{ u.id }}</td>
                        <td>{{ u.username }}</td>
                        <td>{{ u.real_name }}</td>
                        <td>{{ u.department or '-' }}</td>
                        <td>
                            {% if u.role == '管理员' %}
                                <span class="badge bg-primary">管理员</span>
                            {% elif u.role == '审批人' %}
                                <span class="badge bg-success">审批人</span>
                            {% else %}
                                <span class="badge bg-secondary">普通用户</span>
                            {% endif %}
                        </td>
                        <td>
                            <a href="{{ url_for('edit_user', user_id=u.id) }}" class="btn btn-sm btn-outline-primary">
                                <i class="bi bi-pencil"></i>
                            </a>
                            {% if u.id != 1 and u.username != current_user.username %}
                                <a href="{{ url_for('delete_user', user_id=u.id) }}" class="btn btn-sm btn-outline-danger" onclick="return confirm('确认删除该用户？')">
                                    <i class="bi bi-trash"></i>
                                </a>
                            {% endif %}
                        </td>
                    </tr>
                    {% endfor %}
                </tbody>
            </table>
        </div>
    </div>
</div>

<script>
function exportUsers() {
    window.location.href = '/export/users';
}
</script>

<!-- ====== 导入用户弹窗 ====== -->
<div class="modal fade" id="importUserModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title"><i class="bi bi-upload"></i> 导入用户</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="alert alert-info">
                    <i class="bi bi-info-circle"></i>
                    <strong>Excel格式要求：</strong>
                    <ul class="mb-1 mt-1">
                        <li>第一行必须是表头</li>
                        <li>必填列：<strong>用户名</strong>, <strong>真实姓名</strong></li>
                        <li>可选列：密码, 角色, 部门</li>
                        <li>角色可选值：管理员, 审批人, 普通用户</li>
                    </ul>
                    <button class="btn btn-sm btn-outline-primary mt-1" onclick="downloadUserTemplate()">
                        <i class="bi bi-download"></i> 下载模板示例
                    </button>
                </div>
                <form id="importUserForm" enctype="multipart/form-data">
                    <div class="mb-3">
                        <label class="form-label">选择Excel文件 <span class="text-danger">*</span></label>
                        <input type="file" name="file" class="form-control" accept=".xlsx,.xls" required>
                    </div>
                    <div id="importUserProgress" style="display:none;">
                        <div class="progress">
                            <div class="progress-bar progress-bar-striped progress-bar-animated" style="width: 0%">0%</div>
                        </div>
                        <div id="importUserResult" class="mt-2"></div>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
                <button type="button" class="btn btn-warning" id="importUserBtn">导入</button>
            </div>
        </div>
    </div>
</div>

<script>
// 下载用户模板
function downloadUserTemplate() {
    const headers = ['用户名', '真实姓名', '密码', '角色', '部门'];
    const rows = [
        ['zhangsan', '张三', '123456', '普通用户', '技术部'],
        ['lisi', '李四', '123456', '审批人', '财务部'],
        ['wangwu', '王五', '123456', '管理员', '总经办']
    ];
    let csv = headers.join(',') + '\n';
    rows.forEach(row => { csv += row.join(',') + '\n'; });
    const blob = new Blob(['\uFEFF' + csv], { type: 'text/csv;charset=utf-8;' });
    const link = document.createElement('a');
    link.href = URL.createObjectURL(blob);
    link.download = '用户导入模板.csv';
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
    URL.revokeObjectURL(link.href);
}

// 导入用户
document.getElementById('importUserBtn').addEventListener('click', function() {
    const form = document.getElementById('importUserForm');
    const formData = new FormData(form);
    const fileInput = form.querySelector('input[type="file"]');
    
    if (!fileInput.files || fileInput.files.length === 0) {
        alert('请选择Excel文件');
        return;
    }
    
    const btn = this;
    btn.disabled = true;
    btn.innerHTML = '导入中...';
    document.getElementById('importUserProgress').style.display = 'block';
    document.querySelector('#importUserProgress .progress-bar').style.width = '50%';
    document.querySelector('#importUserProgress .progress-bar').textContent = '50%';
    
    fetch('/import/users', {
        method: 'POST',
        body: formData
    })
    .then(r => r.json())
    .then(data => {
        document.querySelector('#importUserProgress .progress-bar').style.width = '100%';
        document.querySelector('#importUserProgress .progress-bar').textContent = '100%';
        const resultDiv = document.getElementById('importUserResult');
        if (data.success) {
            let html = `<div class="alert alert-success">✅ ${data.message}</div>`;
            if (data.errors && data.errors.length > 0) {
                html += `<div class="alert alert-warning"><strong>错误明细：</strong><br>${data.errors.join('<br>')}</div>`;
            }
            resultDiv.innerHTML = html;
            setTimeout(() => { location.reload(); }, 2000);
        } else {
            resultDiv.innerHTML = `<div class="alert alert-danger">❌ ${data.message}</div>`;
            btn.disabled = false;
            btn.innerHTML = '导入';
            document.querySelector('#importUserProgress .progress-bar').style.width = '0%';
            document.querySelector('#importUserProgress .progress-bar').textContent = '0%';
        }
    })
    .catch(err => {
        document.getElementById('importUserResult').innerHTML = `<div class="alert alert-danger">❌ 导入失败：${err.message}</div>`;
        btn.disabled = false;
        btn.innerHTML = '导入';
        document.querySelector('#importUserProgress .progress-bar').style.width = '0%';
        document.querySelector('#importUserProgress .progress-bar').textContent = '0%';
    });
});
</script>
{% endblock %}