{% extends "user/base.html" %}

{% block title %}产品详情 - {{ config.SITE_NAME or '软件授权管理系统' }}{% endblock %}

{% block extra_css %}
<style>
    .product-detail-image {
        max-height: 400px;
        object-fit: cover;
        border-radius: 10px;
    }
    
    .version-table th {
        background-color: #f8f9fa;
    }
    
    .download-section {
        background: #f8f9fa;
        border-radius: 10px;
        padding: 2rem;
    }
    
    .feature-list li {
        margin-bottom: 0.5rem;
    }
</style>
{% endblock %}

{% block content %}
<div class="container py-4">
    <div class="row">
        <div class="col-12">
            <nav aria-label="breadcrumb">
                <ol class="breadcrumb">
                    <li class="breadcrumb-item"><a href="{{ url_for('user.user_index') }}">首页</a></li>
                    <li class="breadcrumb-item"><a href="{{ url_for('user.user_products') }}">产品中心</a></li>
                    <li class="breadcrumb-item active" aria-current="page">产品详情</li>
                </ol>
            </nav>
        </div>
    </div>
    
    <div class="row">
        <div class="col-12">
            <div class="card shadow-sm">
                <div class="card-body">
                    <div class="row">
                        <div class="col-lg-6 mb-4 mb-lg-0">
                            <img src="/static/images/product-default.png" 
                                 class="img-fluid product-detail-image" 
                                 alt="产品图片" id="productImage">
                        </div>
                        <div class="col-lg-6">
                            <h1 class="mb-3" id="productName">产品名称</h1>
                            <p class="lead" id="productDescription">产品描述信息，这里是产品的详细介绍内容。</p>
                            
                            <div class="row mb-3">
                                <div class="col-sm-4"><strong>产品版本:</strong></div>
                                <div class="col-sm-8" id="productVersion">v1.0.0</div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-sm-4"><strong>发布状态:</strong></div>
                                <div class="col-sm-8">
                                    <span class="badge bg-success" id="productStatus">已发布</span>
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-sm-4"><strong>分类:</strong></div>
                                <div class="col-sm-8" id="productCategory">办公软件</div>
                            </div>
                            
                            <div class="row mb-4">
                                <div class="col-sm-4"><strong>更新时间:</strong></div>
                                <div class="col-sm-8" id="updateTime">2023-10-01 10:30:00</div>
                            </div>
                            
                            <div class="download-section">
                                <h4 class="mb-3">
                                    <i class="fas fa-download me-2"></i>下载产品
                                </h4>
                                
                                <div class="input-group mb-3">
                                    <input type="text" class="form-control" 
                                           id="licenseKey" 
                                           placeholder="请输入卡密">
                                    <button class="btn btn-outline-secondary" 
                                            type="button" 
                                            id="verifyLicenseBtn">
                                        验证
                                    </button>
                                </div>
                                
                                <div id="downloadSection" style="display: none;">
                                    <div class="alert alert-success">
                                        <i class="fas fa-check-circle me-2"></i>
                                        卡密验证成功！
                                    </div>
                                    <button class="btn btn-success w-100" id="downloadBtn">
                                        <i class="fas fa-download me-2"></i>
                                        立即下载
                                    </button>
                                </div>
                                
                                <div class="mt-3 text-center">
                                    <a href="{{ url_for('user.user_license_purchase') }}" class="btn btn-link">
                                        <i class="fas fa-shopping-cart me-1"></i>购买卡密
                                    </a>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    
    <div class="row mt-4" id="featuresSection" style="display: none;">
        <div class="col-12">
            <div class="card shadow-sm">
                <div class="card-header">
                    <h5 class="mb-0">产品功能特性</h5>
                </div>
                <div class="card-body">
                    <ul class="feature-list" id="featuresList">
                        <!-- 功能特性将通过JavaScript动态加载 -->
                    </ul>
                </div>
            </div>
        </div>
    </div>
    
    <div class="row mt-4">
        <div class="col-12">
            <div class="card shadow-sm">
                <div class="card-header">
                    <h5 class="mb-0">版本历史</h5>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-striped version-table">
                            <thead>
                                <tr>
                                    <th>版本</th>
                                    <th>发布日期</th>
                                    <th>更新内容</th>
                                    <th>操作</th>
                                </tr>
                            </thead>
                            <tbody id="versionHistory">
                                <tr>
                                    <td>v1.0.0</td>
                                    <td>2023-10-01</td>
                                    <td>初始版本发布</td>
                                    <td>
                                        <button class="btn btn-sm btn-outline-primary">
                                            <i class="fas fa-download me-1"></i>下载
                                        </button>
                                    </td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
    // 产品详情页面JavaScript
    document.addEventListener('DOMContentLoaded', function() {
        console.log('产品详情页面加载完成');
        
        // 从URL中获取产品ID
        const urlPath = window.location.pathname;
        const productId = urlPath.split('/').pop();
        
        // 加载产品详情
        loadProductDetail(productId);
        
        // 验证卡密按钮事件
        document.getElementById('verifyLicenseBtn').addEventListener('click', function() {
            const licenseKey = document.getElementById('licenseKey').value.trim();
            
            if (!licenseKey) {
                showNotification('请输入卡密', 'warning');
                return;
            }
            
            // 显示加载状态
            showLoading();
            
            // 调用API验证卡密
            apiRequest('/user/licenses/verify', {
                method: 'POST',
                body: JSON.stringify({ license_key: licenseKey })
            })
            .then(data => {
                if (data.success) {
                    // 验证成功，显示下载按钮
                    document.getElementById('downloadSection').style.display = 'block';
                    showNotification('卡密验证成功！', 'success');
                } else {
                    showNotification('卡密验证失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                showNotification('验证卡密失败，请稍后重试', 'error');
                console.error('验证卡密失败:', error);
            })
            .finally(() => {
                hideLoading();
            });
        });
        
        // 下载按钮事件
        document.getElementById('downloadBtn').addEventListener('click', function() {
            showNotification('开始下载...', 'info');
            // 这里应该触发实际的下载逻辑
        });
    });
    
    // 加载产品详情
    function loadProductDetail(productId) {
        if (!productId) {
            showNotification('产品ID无效', 'error');
            return;
        }
        
        // 显示加载状态
        showLoading();
        
        // 调用API获取产品详情
        apiRequest(`/api/v1/user/products/${productId}`)
            .then(data => {
                if (data.success) {
                    renderProductDetail(data.data);
                } else {
                    showNotification('加载产品详情失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                showNotification('加载产品详情失败，请稍后重试', 'error');
                console.error('加载产品详情失败:', error);
            })
            .finally(() => {
                hideLoading();
            });
    }
    
    // 转义HTML特殊字符
    function escapeHtml(text) {
        if (!text) return '';
        const map = {
            '&': '&amp;',
            '<': '&lt;',
            '>': '&gt;',
            '"': '&quot;',
            "'": '&#039;'
        };
        return text.replace(/[&<>'"]/g, function(m) { return map[m]; });
    }
    
    // 渲染产品详情
    function renderProductDetail(product) {
        // 更新页面内容
        document.getElementById('productName').textContent = product.product_name;
        document.getElementById('productDescription').textContent = product.description || '暂无描述';
        document.getElementById('productVersion').textContent = product.latest_version || '1.0.0';
        document.getElementById('productStatus').textContent = product.status_name;
        document.getElementById('productStatus').className = `badge ${product.status === 1 ? 'bg-success' : 'bg-secondary'}`;
        document.getElementById('updateTime').textContent = product.update_time;
        
        // 更新产品图片
        const productImage = document.getElementById('productImage');
        if (product.image_url) {
            productImage.src = product.image_url;
        } else {
            productImage.src = '/static/images/product-default.png';
        }
        
        // 更新功能特性
        const featuresList = document.getElementById('featuresList');
        const featuresSection = document.getElementById('featuresSection');
        if (product.features) {
            // 将功能特性按行分割并渲染
            const features = product.features.split('\n').filter(f => f.trim() !== '');
            if (features.length > 0) {
                let featuresHtml = '';
                features.forEach(feature => {
                    featuresHtml += `<li><i class="fas fa-check-circle text-success me-2"></i>${escapeHtml(feature)}</li>`;
                });
                featuresList.innerHTML = featuresHtml;
                featuresSection.style.display = 'block';
            } else {
                featuresSection.style.display = 'none';
            }
        } else {
            featuresSection.style.display = 'none';
        }
        
        // 更新版本历史
        const versionHistory = document.getElementById('versionHistory');
        if (product.recent_updates && product.recent_updates.length > 0) {
            let versionHtml = '';
            product.recent_updates.forEach(update => {
                // 安全地处理下载URL
                const downloadUrl = update.download_url ? escapeHtml(update.download_url) : '';
                console.log('Rendering version update:', update);
                versionHtml += `
                    <tr>
                        <td>${escapeHtml(update.version_num)}</td>
                        <td>${formatDate(update.update_time)}</td>
                        <td>${escapeHtml(update.update_log || '无更新说明')}</td>
                        <td>
                            <button class="btn btn-sm btn-outline-primary download-version-btn" 
                                    data-product="${escapeHtml(product.product_id)}" 
                                    data-version="${escapeHtml(update.version_num)}"
                                    data-url="${downloadUrl}">
                                <i class="fas fa-download me-1"></i>下载
                            </button>
                        </td>
                    </tr>
                `;
            });
            versionHistory.innerHTML = versionHtml;
            
            // 为每个下载按钮添加点击事件
            document.querySelectorAll('.download-version-btn').forEach(button => {
                button.addEventListener('click', function() {
                    const productId = this.getAttribute('data-product');
                    const versionNum = this.getAttribute('data-version');
                    const downloadUrl = this.getAttribute('data-url');
                    console.log('Download button clicked:', {productId, versionNum, downloadUrl});
                    downloadVersion(productId, versionNum, downloadUrl);
                });
            });
        }
    }
    
    // 添加下载版本的函数
    function downloadVersion(productId, versionNum, downloadUrl) {
        console.log('Download version called:', {productId, versionNum, downloadUrl});
        showLoading();
        
        // 如果有直接的下载URL，直接处理
        if (downloadUrl && downloadUrl.trim() !== '') {
            try {
                console.log('Processing direct download URL:', downloadUrl);
                // 检查URL是否是本地上传的文件（相对路径）
                if (downloadUrl.startsWith('/')) {
                    // 本地文件，直接下载
                    window.open(downloadUrl, '_blank');
                    showNotification('开始下载...', 'info');
                } else {
                    // 外部链接，询问用户是否跳转
                    if (confirm(`此版本是外部链接，将跳转到：${downloadUrl}\n是否继续？`)) {
                        window.open(downloadUrl, '_blank');
                    }
                }
            } catch (e) {
                console.error('下载处理出错:', e);
                showNotification('下载处理出错，请稍后重试', 'error');
            }
            hideLoading();
            return;
        }
        
        // 如果没有直接的下载URL，检查下载权限
        console.log('Checking download permissions for product:', productId);
        apiRequest(`/api/v1/user/downloads/check?product_id=${productId}`)
            .then(data => {
                console.log('Download permission check result:', data);
                if (data.success) {
                    const downloadInfo = data.data;
                    console.log('Download info:', downloadInfo);
                    
                    // 如果有下载链接，直接处理
                    if (downloadInfo.download_url && downloadInfo.download_url.trim() !== '') {
                        try {
                            console.log('Processing download URL from API:', downloadInfo.download_url);
                            // 检查URL是否是本地上传的文件（相对路径）
                            if (downloadInfo.download_url.startsWith('/')) {
                                // 本地文件，直接下载
                                window.open(downloadInfo.download_url, '_blank');
                                showNotification('开始下载...', 'info');
                            } else {
                                // 外部链接，询问用户是否跳转
                                if (confirm(`此版本是外部链接，将跳转到：${downloadInfo.download_url}\n是否继续？`)) {
                                    window.open(downloadInfo.download_url, '_blank');
                                }
                            }
                        } catch (e) {
                            console.error('下载处理出错:', e);
                            showNotification('下载处理出错，请稍后重试', 'error');
                        }
                    } else {
                        console.log('No download URL available in API response');
                        // 检查是否是付费产品
                        if (downloadInfo.is_paid) {
                            // 显示卡密输入模态框
                            showLicenseVerificationModal(productId, versionNum, downloadInfo.download_url);
                        } else {
                            showNotification('暂无下载链接', 'warning');
                        }
                    }
                } else {
                    showNotification('检查下载权限失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                console.error('检查下载权限失败:', error);
                showNotification('检查下载权限失败，请稍后重试', 'error');
            })
            .finally(() => {
                hideLoading();
            });
    }

    // 显示卡密验证模态框
    function showLicenseVerificationModal(productId, versionNum, downloadUrl) {
        // 创建模态框HTML
        const modalHtml = `
            <div class="modal fade" id="licenseVerifyModal" tabindex="-1" aria-labelledby="licenseVerifyModalLabel" aria-hidden="true">
                <div class="modal-dialog">
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 class="modal-title" id="licenseVerifyModalLabel">卡密验证</h5>
                            <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                        </div>
                        <div class="modal-body">
                            <div class="mb-3">
                                <label for="licenseKeyInput" class="form-label">请输入您的卡密</label>
                                <input type="text" class="form-control" id="licenseKeyInput" placeholder="请输入卡密">
                                <div class="form-text">版本: ${versionNum}</div>
                            </div>
                        </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-primary" id="verifyLicenseBtn">验证并下载</button>
                        </div>
                    </div>
                </div>
            </div>
        `;
        
        // 添加到页面中
        if (!document.getElementById('licenseVerifyModal')) {
            document.body.insertAdjacentHTML('beforeend', modalHtml);
        }
        
        // 显示模态框
        const modal = new bootstrap.Modal(document.getElementById('licenseVerifyModal'));
        modal.show();
        
        // 绑定验证按钮事件
        document.getElementById('verifyLicenseBtn').onclick = function() {
            const licenseKey = document.getElementById('licenseKeyInput').value.trim();
            if (!licenseKey) {
                showNotification('请输入卡密', 'warning');
                return;
            }
            
            verifyAndDownload(productId, licenseKey, downloadUrl);
        };
    }

    // 验证卡密并下载
    function verifyAndDownload(productId, licenseKey, downloadUrl) {
        showLoading();
        
        apiRequest(`/api/v1/user/licenses/verify?license_key=${encodeURIComponent(licenseKey)}&product_id=${productId}`)
            .then(data => {
                if (data.success) {
                    // 验证成功，开始下载
                    if (data.data.download_url) {
                        window.open(data.data.download_url, '_blank');
                        showNotification('验证成功，开始下载...', 'success');
                        
                        // 关闭模态框
                        const modalElement = document.getElementById('licenseVerifyModal');
                        if (modalElement) {
                            const modal = bootstrap.Modal.getInstance(modalElement);
                            if (modal) {
                                modal.hide();
                            }
                        }
                    } else {
                        showNotification('暂无下载链接', 'warning');
                    }
                } else {
                    showNotification('卡密验证失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                showNotification('卡密验证失败，请稍后重试', 'error');
                console.error('卡密验证失败:', error);
            })
            .finally(() => {
                hideLoading();
            });
    }
</script>
{% endblock %}