add

app/models/chat/ChatSession.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace app\models\chat;
+
+use think\Model;
+
+/**
+ * 客服会话模型
+ * Class ChatSession
+ * @package app\models\chat
+ */
+class ChatSession extends Model
+{
+    protected $table = 'cg_chat_session';
+    protected $pk = 'id';
+    protected $autoWriteTimestamp = true;
+
+    // 会话状态
+    const STATUS_PENDING = 0;    // 待分配
+    const STATUS_ACTIVE = 1;     // 进行中
+    const STATUS_ENDED = 2;      // 已结束
+
+    // 来源
+    const SOURCE_PC = 1;
+    const SOURCE_GAME = 2;
+    const SOURCE_PORTAL = 3;
+
+    /**
+     * 获取用户活跃会话
+     */
+    public static function getActiveByUserId(int $userId): ?array
+    {
+        $session = self::where('user_id', $userId)
+            ->whereIn('status', [self::STATUS_PENDING, self::STATUS_ACTIVE])
+            ->find();
+        return $session ? $session->toArray() : null;
+    }
+
+    /**
+     * 获取客服进行中的会话列表
+     */
+    public static function getActiveByAdminId(int $adminId): array
+    {
+        return self::where('admin_id', $adminId)
+            ->where('status', self::STATUS_ACTIVE)
+            ->order('last_msg_time', 'desc')
+            ->select()
+            ->toArray();
+    }
+
+    /**
+     * 获取待分配会话数量
+     */
+    public static function getPendingCount(): int
+    {
+        return self::where('status', self::STATUS_PENDING)->count();
+    }
+}