fleat: update statistics

conn.php

@@ -429,5 +429,12 @@ if(!function_exists('htmlDecode')) {
 
 }
 
+if(!function_exists('formatCurrency')) {
+    function formatCurrency($value) {
+        return '¥' . number_format($value ?? 0, 2);
+    }
+
+}
+
 
 

products_stats.php

@@ -99,6 +99,17 @@ include('statistics_header.php');
         ?>
     </div>
     
+    <!-- 新客户购买产品明细 -->
+    <div class="section-container">
+        <div class="section-title">
+            <h2>新客户购买产品明细</h2>
+        </div>
+        <?php
+        $new_customer_products = getNewCustomerProductPurchases($conn, $start_date, $end_date, $category_filter);
+        renderNewCustomerProductPurchases($new_customer_products);
+        ?>
+    </div>
+    
     <!-- 产品销售趋势 -->
     <div class="chart-container" style="display: none">
         <?php

statistics_utils.php

@@ -428,4 +428,307 @@ function renderNewCustomersByEmployeeChart($employee_data) {
     });
     </script>
     <?php
+}
+
+/**
+ * 获取新客户购买产品明细
+ * 
+ * @param mysqli $conn 数据库连接
+ * @param string $start_date 开始日期
+ * @param string $end_date 结束日期
+ * @param int $category_id 产品分类ID，0表示所有分类
+ * @return array 新客户购买产品数据
+ */
+function getNewCustomerProductPurchases($conn, $start_date, $end_date, $category_id = 0) {
+    // 获取在指定日期范围内首次购买的客户
+    $new_customer_sql = "
+        SELECT DISTINCT o.customer_id
+        FROM orders o
+        WHERE o.order_date BETWEEN ? AND ?
+        AND o.order_status != 0
+        AND NOT EXISTS (
+            SELECT 1 FROM orders o2 
+            WHERE o2.customer_id = o.customer_id 
+            AND o2.order_date < ?
+            AND o2.order_status != 0
+        )
+    ";
+    
+    $stmt = $conn->prepare($new_customer_sql);
+    $stmt->bind_param("sss", $start_date, $end_date, $start_date);
+    $stmt->execute();
+    $new_customers_result = $stmt->get_result();
+    
+    $new_customer_ids = [];
+    while ($row = $new_customers_result->fetch_assoc()) {
+        $new_customer_ids[] = $row['customer_id'];
+    }
+    
+    // 如果没有新客户，返回空数组
+    if (empty($new_customer_ids)) {
+        return [];
+    }
+    
+    // 构建查询条件中的客户ID列表
+    $customer_ids_str = implode(',', $new_customer_ids);
+    
+    // 查询这些新客户购买的产品
+    $category_filter = "";
+    if ($category_id > 0) {
+        $category_filter = "AND p.category_id = " . intval($category_id);
+    }
+    
+    $product_sql = "
+        SELECT 
+            p.id,
+            p.ProductName as product_name,
+            pc.name as category_name,
+            COUNT(DISTINCT o.id) as order_count,
+            COUNT(DISTINCT o.customer_id) as customer_count,
+            SUM(oi.quantity) as total_quantity,
+            SUM(oi.total_price) as total_revenue,
+            AVG(oi.unit_price) as avg_price
+        FROM orders o
+        JOIN order_items oi ON o.id = oi.order_id
+        JOIN products p ON oi.product_id = p.id
+        LEFT JOIN product_categories pc ON p.category_id = pc.id
+        WHERE o.customer_id IN ({$customer_ids_str})
+        AND o.order_date BETWEEN ? AND ?
+        AND o.order_status != 0
+        {$category_filter}
+        GROUP BY p.id
+        ORDER BY total_revenue DESC
+    ";
+    
+    $stmt = $conn->prepare($product_sql);
+    $stmt->bind_param("ss", $start_date, $end_date);
+    $stmt->execute();
+    
+    $result = $stmt->get_result();
+    $products = [];
+    
+    while ($row = $result->fetch_assoc()) {
+        $products[] = $row;
+    }
+    
+    return [
+        'new_customer_count' => count($new_customer_ids),
+        'products' => $products
+    ];
+}
+
+/**
+ * 渲染新客户产品购买明细
+ * 
+ * @param array $product_data 产品购买数据
+ * @return void
+ */
+function renderNewCustomerProductPurchases($product_data) {
+    if (empty($product_data) || empty($product_data['products'])) {
+        echo '<div class="alert alert-info">该时间段内没有新客户购买产品数据</div>';
+        return;
+    }
+    
+    $products = $product_data['products'];
+    $new_customer_count = $product_data['new_customer_count'];
+    ?>
+    
+    <div class="section-intro">
+        <p>本期间共有 <strong><?php echo number_format($new_customer_count); ?></strong> 名新客户进行了购买。以下是他们购买的产品明细：</p>
+    </div>
+    
+    <div class="table-responsive">
+        <table class="data-table">
+            <thead>
+                <tr>
+                    <th>产品名称</th>
+                    <th>产品分类</th>
+                    <th>订单数</th>
+                    <th>购买客户数</th>
+                    <th>销售数量</th>
+                    <th>销售金额</th>
+                    <th>平均单价</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php foreach ($products as $product): ?>
+                <tr>
+                    <td><?php echo htmlspecialchars($product['product_name']); ?></td>
+                    <td><?php echo htmlspecialchars($product['category_name'] ?: '未分类'); ?></td>
+                    <td><?php echo number_format($product['order_count']); ?></td>
+                    <td><?php echo number_format($product['customer_count']); ?></td>
+                    <td><?php echo number_format($product['total_quantity']); ?></td>
+                    <td><?php echo formatCurrency($product['total_revenue']); ?></td>
+                    <td><?php echo formatCurrency($product['avg_price']); ?></td>
+                </tr>
+                <?php endforeach; ?>
+            </tbody>
+        </table>
+    </div>
+    
+    <!-- 新客户产品购买分布图 -->
+    <div class="chart-container">
+        <div>
+            <canvas id="newCustomerProductChart"></canvas>
+        </div>
+    </div>
+    
+    <script>
+    <?php
+    // 准备图表数据
+    $product_names = [];
+    $product_quantities = [];
+    $product_revenues = [];
+    
+    // 只取前10个产品用于图表显示
+    $top_products = array_slice($products, 0, 10);
+    
+    foreach ($top_products as $product) {
+        $product_names[] = $product['product_name'];
+        $product_quantities[] = $product['total_quantity'];
+        $product_revenues[] = $product['total_revenue'];
+    }
+    
+    // 生成图表背景色
+    $colors = generateChartColors(count($top_products));
+    $backgroundColors = [];
+    
+    foreach ($colors as $color) {
+        $backgroundColors[] = $color[0];
+    }
+    ?>
+    
+    var newCustomerProductCtx = document.getElementById('newCustomerProductChart').getContext('2d');
+    new Chart(newCustomerProductCtx, {
+        type: 'bar',
+        data: {
+            labels: <?php echo json_encode($product_names); ?>,
+            datasets: [
+                {
+                    label: '销售数量',
+                    data: <?php echo json_encode($product_quantities); ?>,
+                    backgroundColor: 'rgba(54, 162, 235, 0.7)',
+                    borderColor: 'rgba(54, 162, 235, 1)',
+                    borderWidth: 1,
+                    yAxisID: 'y-quantity'
+                },
+                {
+                    label: '销售金额',
+                    data: <?php echo json_encode($product_revenues); ?>,
+                    backgroundColor: 'rgba(255, 99, 132, 0.7)',
+                    borderColor: 'rgba(255, 99, 132, 1)',
+                    borderWidth: 1,
+                    yAxisID: 'y-revenue',
+                    type: 'line',
+                    fill: false
+                }
+            ]
+        },
+        options: {
+            responsive: true,
+            scales: {
+                'y-quantity': {
+                    type: 'linear',
+                    position: 'left',
+                    title: {
+                        display: true,
+                        text: '销售数量'
+                    },
+                    beginAtZero: true
+                },
+                'y-revenue': {
+                    type: 'linear',
+                    position: 'right',
+                    title: {
+                        display: true,
+                        text: '销售金额'
+                    },
+                    beginAtZero: true,
+                    grid: {
+                        drawOnChartArea: false
+                    }
+                }
+            },
+            plugins: {
+                title: {
+                    display: true,
+                    text: '新客户热门购买产品 (Top 10)'
+                }
+            }
+        }
+    });
+    </script>
+    
+    <!-- 新客户产品类别分布图 -->
+    <div class="chart-container">
+        <div>
+            <canvas id="newCustomerCategoryChart"></canvas>
+        </div>
+    </div>
+    
+    <script>
+    <?php
+    // 按产品类别分组
+    $categories = [];
+    $category_data = [];
+    
+    foreach ($products as $product) {
+        $category = $product['category_name'] ?: '未分类';
+        if (!isset($category_data[$category])) {
+            $category_data[$category] = [
+                'quantity' => 0,
+                'revenue' => 0
+            ];
+        }
+        $category_data[$category]['quantity'] += $product['total_quantity'];
+        $category_data[$category]['revenue'] += $product['total_revenue'];
+    }
+    
+    $category_names = array_keys($category_data);
+    $category_quantities = array_column($category_data, 'quantity');
+    $category_revenues = array_column($category_data, 'revenue');
+    
+    // 计算占比
+    $total_revenue = array_sum($category_revenues);
+    $revenue_percentages = [];
+    
+    foreach ($category_revenues as $revenue) {
+        $revenue_percentages[] = round(($revenue / $total_revenue) * 100, 1);
+    }
+    
+    // 生成图表背景色
+    $category_colors = generateChartColors(count($category_data), false);
+    $category_bg_colors = array_column($category_colors, 0);
+    ?>
+    
+    var newCustomerCategoryCtx = document.getElementById('newCustomerCategoryChart').getContext('2d');
+    new Chart(newCustomerCategoryCtx, {
+        type: 'pie',
+        data: {
+            labels: <?php echo json_encode($category_names); ?>,
+            datasets: [{
+                data: <?php echo json_encode($revenue_percentages); ?>,
+                backgroundColor: <?php echo json_encode($category_bg_colors); ?>,
+                borderWidth: 1
+            }]
+        },
+        options: {
+            responsive: true,
+            plugins: {
+                title: {
+                    display: true,
+                    text: '新客户产品类别销售占比'
+                },
+                tooltip: {
+                    callbacks: {
+                        label: function(context) {
+                            return context.label + ': ' + context.raw + '%';
+                        }
+                    }
+                }
+            }
+        }
+    });
+    </script>
+    <?php
 }