{% extends "base.html" %}

{% block title %}产品管理 - 软件授权管理系统{% endblock %}

{% block page_title %}产品管理{% endblock %}

{% block page_actions %}
<a href="{{ url_for('web.create_product') }}" class="btn btn-primary">
    <i class="fas fa-plus me-2"></i>
    创建产品
</a>
{% endblock %}

{% block content %}
<!-- 搜索表单 -->
<div class="card shadow mb-4">
    <div class="card-body">
        <form id="search-form" class="row g-3">
            <div class="col-md-4">
                <label for="search-keyword" class="form-label">关键词搜索</label>
                <input type="text" class="form-control" id="search-keyword" placeholder="产品名称或ID">
            </div>
            <div class="col-md-8 d-flex align-items-end">
                <div class="btn-group" role="group">
                    <button type="submit" class="btn btn-primary">
                        <i class="fas fa-search me-2"></i>搜索
                    </button>
                    <button type="button" class="btn btn-outline-secondary" id="reset-search">
                        <i class="fas fa-undo me-2"></i>重置
                    </button>
                </div>
            </div>
        </form>
    </div>
</div>

<!-- 批量操作栏 -->
<div class="card shadow mb-4">
    <div class="card-body">
        <div class="d-flex justify-content-between align-items-center">
            <div>
                <button type="button" class="btn btn-danger btn-sm" id="batch-delete-btn" style="display: none;">
                    <i class="fas fa-trash me-1"></i>批量删除
                </button>
                <div class="btn-group btn-group-sm" id="batch-status-btn" style="display: none;">
                    <button type="button" class="btn btn-outline-success" id="batch-enable-btn">
                        <i class="fas fa-check-circle me-1"></i>批量启用
                    </button>
                    <button type="button" class="btn btn-outline-secondary" id="batch-disable-btn">
                        <i class="fas fa-ban me-1"></i>批量禁用
                    </button>
                </div>
            </div>
            <div class="text-muted small">
                <span id="selected-count">已选择 0 项</span>
            </div>
        </div>
    </div>
</div>

<!-- 产品列表 -->
<div class="card shadow">
    <div class="card-body">
        <div class="table-responsive">
            <table class="table table-hover">
                <thead class="table-light">
                    <tr>
                        <th width="50">
                            <input type="checkbox" id="select-all-checkbox" class="form-check-input">
                        </th>
                        <th>产品ID</th>
                        <th>产品名称</th>
                        <th>描述</th>
                        <th>图片</th>
                        <th>状态</th>
                        <th>卡密统计</th>
                        <th>设备统计</th>
                        <th>创建时间</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody id="product-list">
                    <tr>
                        <td colspan="9" class="text-center text-muted">加载中...</td>
                    </tr>
                </tbody>
            </table>
        </div>
        
        <!-- 分页 -->
        <nav aria-label="分页导航">
            <ul class="pagination justify-content-center mb-0" id="pagination">
            </ul>
        </nav>
    </div>
</div>

<!-- 删除确认模态框 -->
<div class="modal fade" id="deleteModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">确认删除</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                确定要删除产品 "<strong id="delete-product-name"></strong>" 吗？此操作不可恢复。
            </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-danger" id="confirm-delete">确定删除</button>
            </div>
        </div>
    </div>
</div>

<!-- 批量删除确认模态框 -->
<div class="modal fade" id="batchDeleteModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">确认批量删除</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                确定要删除选中的 <strong id="batch-delete-count"></strong> 个产品吗？此操作不可恢复。
            </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-danger" id="confirm-batch-delete">确定删除</button>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
let currentPage = 1;
let currentKeyword = '';

// 页面加载完成后初始化
// 使用立即执行函数确保在DOM和所有脚本加载完成后执行
(function() {
    function init() {
        console.log('产品列表页面已加载，开始初始化...');
        console.log('apiRequest函数是否存在:', typeof apiRequest);
        if (typeof apiRequest === 'function') {
            loadProducts();
            initEventListeners();
        } else {
            console.error('apiRequest函数未定义，等待脚本加载...');
            // 如果apiRequest未定义，等待一段时间后重试
            setTimeout(function() {
                if (typeof apiRequest === 'function') {
                    loadProducts();
                    initEventListeners();
                } else {
                    console.error('apiRequest函数仍未定义，请检查脚本加载顺序');
                }
            }, 100);
        }
    }
    
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        // DOM已经加载完成，直接执行
        init();
    }
})();

// 初始化事件监听器
function initEventListeners() {
    // 搜索表单
    document.getElementById('search-form').addEventListener('submit', function(e) {
        e.preventDefault();
        currentKeyword = document.getElementById('search-keyword').value.trim();
        currentPage = 1;
        loadProducts();
    });

    // 重置搜索
    document.getElementById('reset-search').addEventListener('click', function() {
        document.getElementById('search-keyword').value = '';
        currentKeyword = '';
        currentPage = 1;
        loadProducts();
    });

    // 删除确认
    document.getElementById('confirm-delete').addEventListener('click', function() {
        const productId = document.getElementById('confirm-delete').dataset.productId;
        deleteProduct(productId);
    });

    // 批量删除确认
    document.getElementById('confirm-batch-delete').addEventListener('click', function() {
        batchDeleteProducts();
    });

    // 全选/取消全选
    document.getElementById('select-all-checkbox').addEventListener('change', function() {
        const checkboxes = document.querySelectorAll('.product-checkbox');
        checkboxes.forEach(checkbox => {
            checkbox.checked = this.checked;
        });
        updateBatchButtons();
    });

    // 批量启用
    document.getElementById('batch-enable-btn').addEventListener('click', function(e) {
        e.preventDefault();
        batchUpdateProductStatus(1);
    });

    // 批量禁用
    document.getElementById('batch-disable-btn').addEventListener('click', function(e) {
        e.preventDefault();
        batchUpdateProductStatus(0);
    });
}

// 加载产品列表
function loadProducts(page = 1) {
    console.log('loadProducts函数被调用，页码:', page);
    const params = new URLSearchParams({
        page: page,
        per_page: 10
    });

    if (currentKeyword) {
        params.append('keyword', currentKeyword);
    }

    const apiUrl = `/api/v1/products?${params}`;
    console.log('请求API URL:', apiUrl);
    console.log('准备请求API:', apiUrl);
    
    // 使用apiRequest函数，它已经处理了加载动画和错误处理
    apiRequest(apiUrl)
        .then(data => {
            if (data && data.success && data.data) {
                renderProductList(data.data.products);
                renderPagination(data.data.pagination);
            } else {
                renderProductList([]);
                renderPagination({ pages: 0, page: 1, has_prev: false, has_next: false });
                if (data && data.message) {
                    showNotification(data.message, 'error');
                } else {
                    showNotification('加载产品列表失败', 'error');
                }
            }
        })
        .catch(error => {
            console.error('Failed to load products:', error);
            // 确保在任何错误情况下都清除加载状态
            renderProductList([]);
            renderPagination({ pages: 0, page: 1, has_prev: false, has_next: false });
            
            // apiRequest已经处理了401和403错误，这里只处理其他错误
            if (error.message && !error.message.includes('401') && !error.message.includes('403')) {
                showNotification('加载产品列表失败: ' + error.message, 'error');
            }
        });
}

// 渲染产品列表
function renderProductList(products) {
    const tbody = document.getElementById('product-list');
    
    // 防御式编程：确保tbody存在
    if (!tbody) {
        console.error('产品列表容器未找到');
        return;
    }
    
    // 检查产品数据是否有效
    if (!Array.isArray(products) || products.length === 0) {
        tbody.innerHTML = '<tr><td colspan="9" class="text-center text-muted">暂无数据</td></tr>';
        return;
    }

    tbody.innerHTML = products.map(product => `
        <tr>
            <td>
                <input type="checkbox" class="product-checkbox" data-product-id="${escapeHtml(product.product_id)}">
            </td>
            <td><code>${escapeHtml(product.product_id)}</code></td>
            <td>
                <strong>${escapeHtml(product.product_name)}</strong>
                ${product.latest_version ? `<br><small class="text-muted">最新版本: ${escapeHtml(product.latest_version)}</small>` : ''}
            </td>
            <td>${escapeHtml(product.description || '-')}</td>
            <td>
                ${product.image_path ? `<img src="${escapeHtml(product.image_path)}" alt="产品图片" style="max-width: 50px; max-height: 50px;">` : '-'}
            </td>
            <td>
                <span class="badge ${product.status === 1 ? 'bg-success' : 'bg-secondary'}">
                    ${escapeHtml(product.status_name)}
                </span>
            </td>
            <td>
                <small>
                    总计: ${product.total_licenses || 0}<br>
                    活跃: <span class="text-success">${product.active_licenses || 0}</span>
                </small>
            </td>
            <td>
                <small>
                    在线: <span class="text-success">${product.total_devices || 0}</span>
                </small>
            </td>
            <td>
                <small>${formatDate(product.create_time)}</small>
            </td>
            <td>
                <div class="btn-group btn-group-sm" role="group">
                    <a href="/products/${product.product_id}" class="btn btn-outline-primary" title="查看">
                        <i class="fas fa-eye"></i>
                    </a>
                    <a href="/products/${product.product_id}/edit" class="btn btn-outline-secondary" title="编辑">
                        <i class="fas fa-edit"></i>
                    </a>
                    <button type="button" class="btn btn-outline-danger btn-delete"
                            data-product-id="${product.product_id}"
                            data-product-name="${product.product_name}"
                            title="删除">
                        <i class="fas fa-trash"></i>
                    </button>
                </div>
            </td>
        </tr>
    `).join('');

    // 绑定删除按钮事件
    document.querySelectorAll('.btn-delete').forEach(btn => {
        btn.addEventListener('click', function() {
            const productId = this.dataset.productId;
            const productName = this.dataset.productName;
            showDeleteModal(productId, productName);
        });
    });

    // 绑定复选框事件
    document.querySelectorAll('.product-checkbox').forEach(checkbox => {
        checkbox.addEventListener('change', updateBatchButtons);
    });

    // 重置全选复选框
    document.getElementById('select-all-checkbox').checked = false;
    updateBatchButtons();
}

// 渲染分页
function renderPagination(pagination) {
    const paginationEl = document.getElementById('pagination');
    
    // 防御式编程：确保分页容器存在
    if (!paginationEl) {
        console.error('分页容器未找到');
        return;
    }
    
    // 检查分页数据是否有效
    if (!pagination || typeof pagination !== 'object' || !Number.isFinite(pagination.pages) || pagination.pages <= 1) {
        paginationEl.innerHTML = '';
        return;
    }

    let html = '';

    // 上一页
    if (pagination.has_prev) {
        html += `<li class="page-item">
                    <a class="page-link" href="#" data-page="${pagination.page - 1}">上一页</a>
                 </li>`;
    }

    // 页码
    const startPage = Math.max(1, pagination.page - 2);
    const endPage = Math.min(pagination.pages, pagination.page + 2);

    if (startPage > 1) {
        html += `<li class="page-item"><a class="page-link" href="#" data-page="1">1</a></li>`;
        if (startPage > 2) {
            html += `<li class="page-item disabled"><span class="page-link">...</span></li>`;
        }
    }

    for (let i = startPage; i <= endPage; i++) {
        html += `<li class="page-item ${i === pagination.page ? 'active' : ''}">
                    <a class="page-link" href="#" data-page="${i}">${i}</a>
                 </li>`;
    }

    if (endPage < pagination.pages) {
        if (endPage < pagination.pages - 1) {
            html += `<li class="page-item disabled"><span class="page-link">...</span></li>`;
        }
        html += `<li class="page-item"><a class="page-link" href="#" data-page="${pagination.pages}">${pagination.pages}</a></li>`;
    }

    // 下一页
    if (pagination.has_next) {
        html += `<li class="page-item">
                    <a class="page-link" href="#" data-page="${pagination.page + 1}">下一页</a>
                 </li>`;
    }

    paginationEl.innerHTML = html;

    // 绑定分页点击事件
    paginationEl.querySelectorAll('.page-link').forEach(link => {
        link.addEventListener('click', function(e) {
            e.preventDefault();
            const page = parseInt(this.dataset.page);
            if (page && page !== currentPage) {
                currentPage = page;
                loadProducts(page);
            }
        });
    });
}

// 显示删除确认模态框
function showDeleteModal(productId, productName) {
    document.getElementById('delete-product-name').textContent = productName;
    document.getElementById('confirm-delete').dataset.productId = productId;

    const modal = new bootstrap.Modal(document.getElementById('deleteModal'));
    modal.show();
}

// 删除产品
function deleteProduct(productId) {
    // 显示加载动画
    showLoading();
    
    apiRequest(`/api/v1/products/${productId}`, {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
        }
    })
    .then(response => {
        // 隐藏加载动画
        hideLoading();
        
        if (response.status === 401) {
            window.location.href = '/login';
            throw new Error('未授权访问');
        }
        
        return response.json();
    })
    .then(data => {
        if (data && data.success) {
            showNotification('产品删除成功', 'success');
            loadProducts(currentPage);

            // 关闭模态框
            const modal = bootstrap.Modal.getInstance(document.getElementById('deleteModal'));
            modal.hide();
        } else {
            showNotification(data.message || '删除失败', 'error');
        }
    })
    .catch(error => {
        // 隐藏加载动画
        hideLoading();
        
        console.error('Failed to delete product:', error);
        showNotification('删除失败: ' + (error.message || '未知错误'), 'error');
    });
}

// 更新批量操作按钮状态
function updateBatchButtons() {
    const selectedCount = document.querySelectorAll('.product-checkbox:checked').length;
    const batchDeleteBtn = document.getElementById('batch-delete-btn');
    const batchStatusBtn = document.getElementById('batch-status-btn');
    
    if (selectedCount > 0) {
        batchDeleteBtn.style.display = 'inline-block';
        batchStatusBtn.style.display = 'inline-block';
    } else {
        batchDeleteBtn.style.display = 'none';
        batchStatusBtn.style.display = 'none';
    }
    
    // 更新选中数量显示
    document.getElementById('selected-count').textContent = `已选择 ${selectedCount} 项`;
}

// 显示批量删除确认模态框
function showBatchDeleteModal() {
    const selectedCount = document.querySelectorAll('.product-checkbox:checked').length;
    document.getElementById('batch-delete-count').textContent = selectedCount;

    const modal = new bootstrap.Modal(document.getElementById('batchDeleteModal'));
    modal.show();
}

// 批量删除产品
function batchDeleteProducts() {
    const selectedCheckboxes = document.querySelectorAll('.product-checkbox:checked');
    const productIds = Array.from(selectedCheckboxes).map(checkbox => checkbox.dataset.productId);

    // 显示加载动画
    showLoading();
    
    apiRequest('/api/v1/products/batch', {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({ product_ids: productIds })
    })
    .then(response => {
        // 隐藏加载动画
        hideLoading();
        
        if (response.status === 401) {
            window.location.href = '/login';
            throw new Error('未授权访问');
        }
        
        return response.json();
    })
    .then(data => {
        if (data && data.success) {
            showNotification(data.message || '批量删除成功', 'success');
            loadProducts(currentPage);

            // 关闭模态框
            const modal = bootstrap.Modal.getInstance(document.getElementById('batchDeleteModal'));
            modal.hide();

            // 重置全选复选框
            document.getElementById('select-all-checkbox').checked = false;
        } else {
            showNotification(data.message || '批量删除失败', 'error');
            
            // 如果有无法删除的产品，显示详细信息
            if (data.undeletable_products) {
                const undeletableInfo = data.undeletable_products.map(p => 
                    `${p.product_name} (${p.license_count}个卡密)`
                ).join(', ');
                showNotification(`以下产品无法删除: ${undeletableInfo}`, 'error');
            }
            
            // 关闭模态框
            const modal = bootstrap.Modal.getInstance(document.getElementById('batchDeleteModal'));
            modal.hide();
        }
    })
    .catch(error => {
        // 隐藏加载动画
        hideLoading();
        
        console.error('Failed to batch delete products:', error);
        showNotification('批量删除失败: ' + (error.message || '未知错误'), 'error');
        
        // 关闭模态框
        const modal = bootstrap.Modal.getInstance(document.getElementById('batchDeleteModal'));
        modal.hide();
    });
}

// 批量更新产品状态
function batchUpdateProductStatus(status) {
    const selectedCheckboxes = document.querySelectorAll('.product-checkbox:checked');
    const productIds = Array.from(selectedCheckboxes).map(checkbox => checkbox.dataset.productId);
    
    if (productIds.length === 0) {
        showNotification('请至少选择一个产品', 'warning');
        return;
    }

    // 显示加载动画
    showLoading();
    
    apiRequest('/api/v1/products/batch/status', {
        method: 'PUT',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({ 
            product_ids: productIds,
            status: status
        })
    })
    .then(response => {
        // 隐藏加载动画
        hideLoading();
        
        if (response.status === 401) {
            window.location.href = '/login';
            throw new Error('未授权访问');
        }
        
        return response.json();
    })
    .then(data => {
        if (data && data.success) {
            showNotification(data.message || '批量更新状态成功', 'success');
            loadProducts(currentPage);
            
            // 重置全选复选框
            document.getElementById('select-all-checkbox').checked = false;
        } else {
            showNotification(data.message || '批量更新状态失败', 'error');
        }
    })
    .catch(error => {
        // 隐藏加载动画
        hideLoading();
        
        console.error('Failed to batch update product status:', error);
        showNotification('批量更新状态失败: ' + (error.message || '未知错误'), 'error');
    });
}

// 在页面加载完成后为批量删除按钮绑定事件
document.addEventListener('DOMContentLoaded', function() {
    const batchDeleteBtn = document.getElementById('batch-delete-btn');
    if (batchDeleteBtn) {
        batchDeleteBtn.addEventListener('click', showBatchDeleteModal);
    }
});
</script>
{% endblock %}