课程附件查询接口，返回值增加已有附件类型列表

src/main/java/xyz/playedu/api/constant/BackendConstant.java

@@ -40,6 +40,11 @@ public class BackendConstant {
     public static final String RESOURCE_TYPE_RAR = "RAR";
     public static final String RESOURCE_TYPE_TXT = "TXT";
 
+    public static final String RESOURCE_TYPE_ANNEX =
+            RESOURCE_TYPE_PDF +","+ RESOURCE_TYPE_TXT +","+
+            RESOURCE_TYPE_ZIP +","+ RESOURCE_TYPE_RAR +","+
+            RESOURCE_TYPE_WORD +","+RESOURCE_TYPE_PPT +","+RESOURCE_TYPE_EXCEL;
+
     public static final HashMap<String, String> RESOURCE_EXT_2_CONTENT_TYPE =
             new HashMap<>() {
                 {

src/main/java/xyz/playedu/api/controller/backend/ResourceController.java

@@ -109,6 +109,11 @@ public class ResourceController {
             data.put("admin_users", adminUsers);
         }
 
+        if(!type.equals(BackendConstant.RESOURCE_TYPE_VIDEO) &&
+                !type.equals(BackendConstant.RESOURCE_TYPE_IMAGE)){
+            filter.setType(BackendConstant.RESOURCE_TYPE_ANNEX);
+            data.put("existingType",resourceService.paginateType(filter));
+        }
         return JsonResponse.data(data);
     }
 

src/main/java/xyz/playedu/api/mapper/ResourceMapper.java

@@ -35,4 +35,6 @@ public interface ResourceMapper extends BaseMapper<Resource> {
     List<Resource> paginate(ResourcePaginateFilter filter);
 
     Long paginateCount(ResourcePaginateFilter filter);
+
+    List<String> paginateType(ResourcePaginateFilter filter);
 }

src/main/java/xyz/playedu/api/service/ResourceService.java

@@ -28,6 +28,8 @@ public interface ResourceService extends IService<Resource> {
 
     PaginationResult<Resource> paginate(int page, int size, ResourcePaginateFilter filter);
 
+    List<String> paginateType(ResourcePaginateFilter filter);
+
     Resource create(
             Integer adminId,
             String categoryIds,

src/main/java/xyz/playedu/api/service/impl/ResourceServiceImpl.java

@@ -60,6 +60,11 @@ public class ResourceServiceImpl extends ServiceImpl<ResourceMapper, Resource>
         return pageResult;
     }
 
+    @Override
+    public List<String> paginateType(ResourcePaginateFilter filter) {
+        return getBaseMapper().paginateType(filter);
+    }
+
     @Override
     @Transactional
     public Resource create(

src/main/resources/mapper/ResourceMapper.xml

@@ -140,4 +140,46 @@
         </if>
     </select>
 
+    <select id="paginateType" resultType="java.lang.String">
+        SELECT DISTINCT ( `resources`.`type` )
+        FROM `resources`
+        <choose>
+            <when test="categoryIds != null and categoryIds != ''">
+                <choose>
+                    <when test="categoryIds.indexOf('0') == 0">
+                        LEFT JOIN `resource_category` ON `resource_category`.`rid` = `resources`.`id`
+                        WHERE `resources`.`is_hidden` = 0
+                        AND `resource_category`.`cid` IS NULL
+                    </when>
+                    <otherwise>
+                        INNER JOIN `resource_category` ON `resource_category`.`rid` = `resources`.`id`
+                        WHERE `resources`.`is_hidden` = 0
+                        AND `resource_category`.`cid` IN (#{categoryIds})
+                    </otherwise>
+                </choose>
+            </when>
+            <otherwise>
+                WHERE `resources`.`is_hidden` = 0
+            </otherwise>
+        </choose>
+        <if test="name != null and name != ''">
+            AND `resources`.`name` LIKE concat('%',#{name},'%')
+        </if>
+        <if test="disk != null and disk != ''">
+            AND `resources`.`disk` = #{disk}
+        </if>
+        <if test="extension != null and extension != ''">
+            AND `resources`.`extension` = #{extension}
+        </if>
+        <if test="type != null and type != ''">
+            AND `resources`.`type` IN
+            <foreach item="item" collection="type.split(',')" open="(" separator="," close=")">
+                #{item}
+            </foreach>
+        </if>
+        <if test="adminId != null and adminId != 0">
+            AND `resources`.`admin_id` = #{adminId}
+        </if>
+    </select>
+
 </mapper>