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server-api/app/controller/admin/DashboardController.php

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+<?php
+
+namespace app\controller\admin;
+
+use support\Request;
+use support\think\Db;
+
+class DashboardController
+{
+    public function index(Request $request)
+    {
+        $totalOrders = (int)Db::name('orders')->count();
+        $pendingCount = (int)Db::name('orders')->whereIn('order_status', [
+            'pending_payment',
+            'pending_submission',
+            'pending_shipping',
+            'pending_supplement',
+        ])->count();
+        $processingCount = (int)Db::name('orders')->whereIn('order_status', [
+            'received',
+            'pending_assignment',
+            'in_first_review',
+            'in_final_review',
+            'generating_report',
+        ])->count();
+        $pendingReturnCount = (int)Db::name('orders')->where('order_status', 'report_published')->count();
+        $returningCount = (int)Db::name('orders')
+            ->alias('o')
+            ->join('order_logistics l', 'l.order_id = o.id')
+            ->where('o.order_status', 'completed')
+            ->where('l.logistics_type', 'return_to_user')
+            ->where('l.tracking_no', '<>', '')
+            ->where('l.tracking_status', '<>', 'received')
+            ->count();
+
+        return api_success([
+            'cards' => [
+                [
+                    'title' => '订单总量',
+                    'value' => $totalOrders,
+                    'desc' => '当前数据库内订单总数',
+                ],
+                [
+                    'title' => '待处理订单',
+                    'value' => $pendingCount,
+                    'desc' => '待支付、待补资料、待寄送等订单',
+                ],
+                [
+                    'title' => '处理中订单',
+                    'value' => $processingCount,
+                    'desc' => '已进入鉴定流程的订单',
+                ],
+                [
+                    'title' => '待寄回订单',
+                    'value' => $pendingReturnCount,
+                    'desc' => '报告已出具，等待平台安排回寄',
+                ],
+                [
+                    'title' => '回寄途中',
+                    'value' => $returningCount,
+                    'desc' => '已登记回寄运单，等待用户签收',
+                ],
+            ],
+        ]);
+    }
+}