update

app/Http/Controllers/Admin/SupplyDemandController.php

@@ -6,6 +6,7 @@ use App\Exports\BaseExport;
 use App\Helpers\ResponseCode;
 use App\Models\AppointmentType;
 use App\Models\CustomForm;
+use App\Models\Message;
 use App\Models\SupplyDemand;
 use App\Models\SupplyDemandType;
 use Illuminate\Support\Facades\Validator;
@@ -193,6 +194,9 @@ class SupplyDemandController extends BaseController
      *     tags={"供需信息管理"},
      *     summary="交互统计",
      *     description="",
+     *     @OA\Parameter(name="start_date", in="query", @OA\Schema(type="string"), required=true, description="开始日期"),
+     *     @OA\Parameter(name="end_date", in="query", @OA\Schema(type="string"), required=true, description="结束日期"),
+     *     @OA\Parameter(name="type", in="query", @OA\Schema(type="string"), required=true, description="token"),
      *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
      *     @OA\Response(
      *      response="200",
@@ -202,7 +206,121 @@ class SupplyDemandController extends BaseController
      */
     public function chart()
     {
+        $now = date('Y-m-d');
+        $startDate = request('start_date', $now);
+        $endDate = request('end_date', $now);
+        $type = request('type');
 
+        // 计算上期时间段（与当前时间段长度相同）
+        $daysDiff = (strtotime($endDate) - strtotime($startDate)) / (60 * 60 * 24) + 1;
+        $prevEndDate = date('Y-m-d', strtotime($startDate) - 1);
+        $prevStartDate = date('Y-m-d', strtotime($prevEndDate) - $daysDiff + 1);
+
+        // 当期供需发布数
+        $supplyDemand = SupplyDemand::where(function ($query) use ($type) {
+            if ($type) {
+                $query->where('type', $type);
+            }
+        })->whereBetween('created_at', [$startDate, $endDate])
+            ->get();
+        $supplyDemandCount = $supplyDemand->count();
+
+        // 上期供需发布数
+        $prevSupplyDemandCount = SupplyDemand::where(function ($query) use ($type) {
+            if ($type) {
+                $query->where('type', $type);
+            }
+        })->whereBetween('created_at', [$prevStartDate, $prevEndDate])
+            ->count();
+
+        // 当期私信数量
+        $messageCount = Message::whereIn('supply_demand_id', $supplyDemand->pluck('id'))->count();
+
+        // 上期私信数量
+        $prevSupplyDemand = SupplyDemand::where(function ($query) use ($type) {
+            if ($type) {
+                $query->where('type', $type);
+            }
+        })->whereBetween('created_at', [$prevStartDate, $prevEndDate])
+            ->get();
+        $prevMessageCount = Message::whereIn('supply_demand_id', $prevSupplyDemand->pluck('id'))->count();
+
+        // 当期交互次数（同一个dialogue_id一来一回算一次交互）
+        $interactionCount = Message::whereBetween('created_at', [$startDate, $endDate])
+            ->whereNotNull('dialogue_id')
+            ->groupBy('dialogue_id')
+            ->selectRaw('dialogue_id, COUNT(*) as message_count')
+            ->having('message_count', '>=', 2)
+            ->count();
+
+        // 上期交互次数
+        $prevInteractionCount = Message::whereBetween('created_at', [$prevStartDate, $prevEndDate])
+            ->whereNotNull('dialogue_id')
+            ->groupBy('dialogue_id')
+            ->selectRaw('dialogue_id, COUNT(*) as message_count')
+            ->having('message_count', '>=', 2)
+            ->count();
+
+        // 计算增减比率
+        $supplyDemandGrowthRate = $this->calculateGrowthRate($supplyDemandCount, $prevSupplyDemandCount);
+        $messageGrowthRate = $this->calculateGrowthRate($messageCount, $prevMessageCount);
+        $interactionGrowthRate = $this->calculateGrowthRate($interactionCount, $prevInteractionCount);
+
+        return $this->success([
+            'supply_demand_count' => $supplyDemandCount,
+            'prev_supply_demand_count' => $prevSupplyDemandCount,
+            'supply_demand_growth_rate' => $supplyDemandGrowthRate,
+            'message_count' => $messageCount,
+            'prev_message_count' => $prevMessageCount,
+            'message_growth_rate' => $messageGrowthRate,
+            'interaction_count' => $interactionCount,
+            'prev_interaction_count' => $prevInteractionCount,
+            'interaction_growth_rate' => $interactionGrowthRate,
+        ]);
+    }
+
+    /**
+     * 计算增长率
+     * @param int $current 当前数值
+     * @param int $previous 上期数值
+     * @return array 包含增长率和增长状态
+     */
+    private function calculateGrowthRate($current, $previous)
+    {
+        if ($previous == 0) {
+            if ($current > 0) {
+                return [
+                    'rate' => 100,
+                    'status' => 'increase',
+                    'display' => '+100%'
+                ];
+            } else {
+                return [
+                    'rate' => 0,
+                    'status' => 'stable',
+                    'display' => '0%'
+                ];
+            }
+        }
+
+        $rate = round(($current - $previous) / $previous * 100, 2);
+
+        if ($rate > 0) {
+            $status = 'increase';
+            $display = '+' . $rate . '%';
+        } elseif ($rate < 0) {
+            $status = 'decrease';
+            $display = $rate . '%';
+        } else {
+            $status = 'stable';
+            $display = '0%';
+        }
+
+        return [
+            'rate' => $rate,
+            'status' => $status,
+            'display' => $display
+        ];
     }
 
 }