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

{% block title %}购买授权 - {{ config.SITE_NAME or '软件授权管理系统' }}{% endblock %}

{% block extra_css %}
<style>
    .product-card {
        transition: transform 0.3s ease;
        border: none;
        border-radius: 10px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    
    .product-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }
    
    .product-image {
        height: 150px;
        object-fit: cover;
        border-top-left-radius: 10px;
        border-top-right-radius: 10px;
    }
    
    .plan-card {
        border: 2px solid #e9ecef;
        border-radius: 10px;
        transition: all 0.3s ease;
    }
    
    .plan-card:hover {
        border-color: #667eea;
        box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
    }
    
    .plan-card.selected {
        border-color: #667eea;
        box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    }
    
    .plan-price {
        font-size: 2rem;
        font-weight: bold;
        color: #667eea;
    }
    
    .payment-method {
        border: 2px solid #e9ecef;
        border-radius: 8px;
        padding: 1rem;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .payment-method:hover {
        border-color: #667eea;
    }
    
    .payment-method.selected {
        border-color: #667eea;
        background-color: rgba(102, 126, 234, 0.05);
    }
    
    .order-summary {
        background: #f8f9fa;
        border-radius: 10px;
        padding: 1.5rem;
    }
</style>
{% endblock %}

{% block content %}
<div class="container py-4">
    <div class="row">
        <div class="col-12">
            <h1 class="mb-4">购买授权</h1>
        </div>
    </div>
    
    <div class="row">
        <!-- 产品选择 -->
        <div class="col-lg-8 mb-4">
            <div class="card shadow-sm">
                <div class="card-header">
                    <h5 class="mb-0">选择产品</h5>
                </div>
                <div class="card-body">
                    <div class="row" id="productsContainer">
                        <!-- 产品列表将通过JavaScript动态加载 -->
                        <div class="col-12 text-center py-5">
                            <div class="spinner-border text-primary" role="status">
                                <span class="visually-hidden">加载中...</span>
                            </div>
                            <p class="mt-2">正在加载产品列表...</p>
                        </div>
                    </div>
                </div>
            </div>
            
            <!-- 套餐选择 -->
            <div class="card shadow-sm mt-4">
                <div class="card-header">
                    <h5 class="mb-0">选择套餐</h5>
                </div>
                <div class="card-body">
                    <div class="row" id="plansContainer">
                        <!-- 套餐列表将根据选择的产品动态加载 -->
                        <div class="col-12 text-center py-5">
                            <i class="fas fa-info-circle fa-2x text-muted mb-3"></i>
                            <h4 class="text-muted">请选择一个产品</h4>
                            <p class="text-muted">选择产品后将显示可用的授权套餐</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- 订单摘要和支付 -->
        <div class="col-lg-4 mb-4">
            <div class="card shadow-sm">
                <div class="card-header">
                    <h5 class="mb-0">订单信息</h5>
                </div>
                <div class="card-body">
                    <div class="order-summary">
                        <h6>订单摘要</h6>
                        <hr>
                        <div class="mb-3">
                            <div class="d-flex justify-content-between">
                                <span>产品:</span>
                                <span id="selectedProduct">-</span>
                            </div>
                        </div>
                        <div class="mb-3">
                            <div class="d-flex justify-content-between">
                                <span>套餐:</span>
                                <span id="selectedPlan">-</span>
                            </div>
                        </div>
                        <div class="mb-3">
                            <div class="d-flex justify-content-between">
                                <span>数量:</span>
                                <span id="selectedQuantity">1</span>
                            </div>
                        </div>
                        <hr>
                        <div class="d-flex justify-content-between fw-bold">
                            <span>总计:</span>
                            <span id="totalAmount" class="plan-price">¥0.00</span>
                        </div>
                    </div>
                    
                    <div class="mt-4">
                        <h6>支付方式</h6>
                        <div class="payment-methods">
                            <div class="payment-method mb-2 selected" data-method="alipay">
                                <div class="d-flex align-items-center">
                                    <i class="fab fa-alipay fa-2x me-3 text-primary"></i>
                                    <div>
                                        <div class="fw-bold">支付宝</div>
                                        <small class="text-muted">推荐使用</small>
                                    </div>
                                </div>
                            </div>
                            <div class="payment-method mb-2" data-method="wechat">
                                <div class="d-flex align-items-center">
                                    <i class="fab fa-weixin fa-2x me-3 text-success"></i>
                                    <div>
                                        <div class="fw-bold">微信支付</div>
                                        <small class="text-muted">即时到账</small>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    
                    <button class="btn btn-primary w-100 mt-4" id="payBtn" disabled>
                        <i class="fas fa-credit-card me-2"></i>立即支付
                    </button>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
    // 卡密购买页面JavaScript
    let selectedProduct = null;
    let selectedPlan = null;
    let selectedQuantity = 1;
    
    document.addEventListener('DOMContentLoaded', function() {
        console.log('卡密购买页面加载完成');
        
        // 初始化产品列表
        loadProducts();
        
        // 支付方式选择
        document.querySelectorAll('.payment-method').forEach(method => {
            method.addEventListener('click', function() {
                document.querySelectorAll('.payment-method').forEach(m => m.classList.remove('selected'));
                this.classList.add('selected');
            });
        });
        
        // 支付按钮事件
        document.getElementById('payBtn').addEventListener('click', function() {
            processPayment();
        });
    });
    
    // 加载产品列表
    function loadProducts() {
        // 显示加载状态
        document.getElementById('productsContainer').innerHTML = `
            <div class="col-12 text-center py-5">
                <div class="spinner-border text-primary" role="status">
                    <span class="visually-hidden">加载中...</span>
                </div>
                <p class="mt-2">正在加载产品列表...</p>
            </div>
        `;
        
        // 调用API获取产品列表
        apiRequest('/api/v1/user/products')
            .then(data => {
                if (data.success) {
                    renderProducts(data.data.products || []);
                } else {
                    showNotification('加载产品列表失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                showNotification('加载产品列表失败，请稍后重试', 'error');
                console.error('加载产品列表失败:', error);
            });
    }
    
    // 渲染产品列表
    function renderProducts(products) {
        const container = document.getElementById('productsContainer');
        
        if (products.length === 0) {
            container.innerHTML = `
                <div class="col-12 text-center py-5">
                    <i class="fas fa-box-open fa-3x text-muted mb-3"></i>
                    <h4 class="text-muted">暂无产品</h4>
                    <p class="text-muted">当前没有可购买的产品</p>
                </div>
            `;
            return;
        }
        
        let productsHtml = '';
        products.forEach(product => {
            productsHtml += `
                <div class="col-lg-4 col-md-6 mb-3">
                    <div class="card product-card h-100" onclick="selectProduct(${JSON.stringify(product).replace(/"/g, '&quot;')})">
                        <img src="${product.image_path || '/static/images/product-default.png'}" 
                             class="card-img-top product-image" 
                             alt="${product.product_name}">
                        <div class="card-body">
                            <h6 class="card-title">${product.product_name}</h6>
                            <p class="card-text small text-muted">${product.description || '暂无描述'}</p>
                        </div>
                    </div>
                </div>
            `;
        });
        
        container.innerHTML = productsHtml;
    }
    
    // 选择产品
    function selectProduct(product) {
        selectedProduct = product;
        document.getElementById('selectedProduct').textContent = product.product_name;
        
        // 更新UI选中状态
        document.querySelectorAll('.product-card').forEach(card => {
            card.classList.remove('border-primary');
        });
        event.currentTarget.classList.add('border-primary');
        
        // 加载该产品的套餐
        loadPlans(product.product_id);
        
        // 更新支付按钮状态
        updatePayButton();
    }
    
    // 加载套餐
    function loadPlans(productId) {
        // 显示加载状态
        document.getElementById('plansContainer').innerHTML = `
            <div class="col-12 text-center py-5">
                <div class="spinner-border text-primary" role="status">
                    <span class="visually-hidden">加载中...</span>
                </div>
                <p class="mt-2">正在加载套餐信息...</p>
            </div>
        `;
        
        // 调用API获取套餐信息
        apiRequest(`/api/v1/user/licenses/packages?product_id=${productId}`)
            .then(data => {
                if (data.success) {
                    renderPlans(data.data.packages || []);
                } else {
                    showNotification('加载套餐信息失败: ' + data.message, 'error');
                }
            })
            .catch(error => {
                showNotification('加载套餐信息失败，请稍后重试', 'error');
                console.error('加载套餐信息失败:', error);
            });
    }
    
    // 渲染套餐
    function renderPlans(plans) {
        const container = document.getElementById('plansContainer');
        
        if (plans.length === 0) {
            container.innerHTML = `
                <div class="col-12 text-center py-5">
                    <i class="fas fa-tags fa-2x text-muted mb-3"></i>
                    <h4 class="text-muted">暂无套餐</h4>
                    <p class="text-muted">该产品暂无可用的授权套餐</p>
                </div>
            `;
            return;
        }
        
        let plansHtml = '';
        plans.forEach(plan => {
            plansHtml += `
                <div class="col-lg-6 mb-3">
                    <div class="plan-card p-3" onclick="selectPlan(${JSON.stringify(plan).replace(/"/g, '&quot;')})">
                        <div class="d-flex justify-content-between align-items-start">
                            <div>
                                <h6 class="mb-1">${plan.name}</h6>
                                <p class="small text-muted mb-2">${plan.description || '暂无描述'}</p>
                                <div class="plan-price">¥${plan.price.toFixed(2)}</div>
                                <!-- 显示库存信息 -->
                                ${plan.stock !== undefined && plan.stock !== -1 ? 
                                  `<div class="small text-muted mt-1">剩余库存: ${plan.stock}</div>` : 
                                  '<div class="small text-muted mt-1">库存: 无限</div>'}
                            </div>
                            <span class="badge bg-primary">${plan.duration_text || getDurationType(plan.duration)}</span>
                        </div>
                        <ul class="small mt-3 mb-0">
                            <li>有效期: ${plan.duration_text || getDurationType(plan.duration)}</li>
                            <li>设备数: ${plan.max_devices || '无限制'}</li>
                            ${plan.stock !== undefined && plan.stock === 0 ? 
                              '<li class="text-danger">库存不足</li>' : ''}
                        </ul>
                    </div>
                </div>
            `;
        });
        
        container.innerHTML = plansHtml;
    }
    
    // 选择套餐
    function selectPlan(plan) {
        selectedPlan = plan;
        document.getElementById('selectedPlan').textContent = plan.name;
        
        // 更新UI选中状态
        document.querySelectorAll('.plan-card').forEach(card => {
            card.classList.remove('selected');
        });
        event.currentTarget.classList.add('selected');
        
        // 更新总价
        updateTotalAmount();
        
        // 更新支付按钮状态
        updatePayButton();
    }
    
    // 获取时长类型
    function getDurationType(days) {
        if (days === -1) {
            return '永久卡';
        } else if (days === 1) {
            return '天卡';
        } else if (days === 30) {
            return '月卡';
        } else if (days === 90) {
            return '季卡';
        } else if (days === 365) {
            return '年卡';
        } else {
            return `${days}天卡`;
        }
    }
    
    // 更新总价
    function updateTotalAmount() {
        if (selectedPlan) {
            const total = selectedPlan.price * selectedQuantity;
            document.getElementById('totalAmount').textContent = `¥${total.toFixed(2)}`;
        }
    }
    
    // 更新支付按钮状态
    function updatePayButton() {
        const payBtn = document.getElementById('payBtn');
        if (selectedProduct && selectedPlan) {
            payBtn.disabled = false;
        } else {
            payBtn.disabled = true;
        }
    }
    
    // 处理支付
    function processPayment() {
        if (!selectedProduct || !selectedPlan) {
            showNotification('请选择产品和套餐', 'warning');
            return;
        }
        
        const paymentMethod = document.querySelector('.payment-method.selected').dataset.method;
        
        // 显示加载状态
        const payBtn = document.getElementById('payBtn');
        const originalText = payBtn.innerHTML;
        payBtn.innerHTML = '<span class="spinner-border spinner-border-sm me-2" role="status"></span>处理中...';
        payBtn.disabled = true;
        
        // 调用API创建订单
        const orderData = {
            product_id: selectedProduct.product_id,
            package_id: selectedPlan.package_id,
            quantity: selectedQuantity,
            payment_method: paymentMethod
        };
        
        apiRequest('/user/orders', {
            method: 'POST',
            body: JSON.stringify(orderData)
        })
        .then(data => {
            if (data.success) {
                showNotification('订单创建成功！请完成支付', 'success');
                // 这里应该跳转到支付页面或显示支付二维码
            } else {
                showNotification('创建订单失败: ' + data.message, 'error');
            }
        })
        .catch(error => {
            showNotification('创建订单失败，请稍后重试', 'error');
            console.error('创建订单失败:', error);
        })
        .finally(() => {
            payBtn.innerHTML = originalText;
            payBtn.disabled = false;
        });
    }
</script>
{% endblock %}