feat(source): 新增根据人脸和设备ID获取素材的功能

- 在SourceMapper接口中新增getSourceByFaceAndDeviceId方法
- 支持通过faceId、deviceId、type和排序策略查询特定素材
- 在XML映射文件中实现对应的SQL查询逻辑
- 支持多种排序策略：最新、最早、评分降序、评分升序、随机和已购买优先
- 查询结果限制为一条记录

src/main/java/com/ycwl/basic/mapper/SourceMapper.java

@@ -131,4 +131,14 @@ public interface SourceMapper {
      * @return 设备ID列表
      */
     List<Long> getDeviceIdsByFaceId(Long faceId);
+
+    /**
+     * 根据faceId和设备ID获取source
+     * @param faceId 人脸ID
+     * @param deviceId 设备ID
+     * @param type 素材类型(1-视频,2-图片)
+     * @param sortStrategy 排序策略
+     * @return source实体
+     */
+    SourceEntity getSourceByFaceAndDeviceId(Long faceId, Long deviceId, Integer type, String sortStrategy);
 }

src/main/resources/mapper/SourceMapper.xml

@@ -410,4 +410,37 @@
         WHERE ms.face_id = #{faceId}
         ORDER BY s.device_id ASC
     </select>
+
+    <select id="getSourceByFaceAndDeviceId" resultType="com.ycwl.basic.model.pc.source.entity.SourceEntity">
+        SELECT s.*
+        FROM source s
+        INNER JOIN member_source ms ON s.id = ms.source_id
+        WHERE ms.face_id = #{faceId}
+          AND s.device_id = #{deviceId}
+          AND s.type = #{type}
+        <choose>
+            <when test='sortStrategy == "LATEST"'>
+                ORDER BY s.create_time DESC
+            </when>
+            <when test='sortStrategy == "EARLIEST"'>
+                ORDER BY s.create_time ASC
+            </when>
+            <when test='sortStrategy == "SCORE_DESC"'>
+                ORDER BY IFNULL(s.score, 0) DESC, s.create_time DESC
+            </when>
+            <when test='sortStrategy == "SCORE_ASC"'>
+                ORDER BY IFNULL(s.score, 0) ASC, s.create_time ASC
+            </when>
+            <when test='sortStrategy == "RANDOM"'>
+                ORDER BY RAND()
+            </when>
+            <when test='sortStrategy == "PURCHASED_FIRST"'>
+                ORDER BY ms.is_buy DESC, s.create_time DESC
+            </when>
+            <otherwise>
+                ORDER BY s.create_time DESC
+            </otherwise>
+        </choose>
+        LIMIT 1
+    </select>
 </mapper>