support get group file url

onebot/src/main/java/cn/evole/onebot/sdk/enums/ActionPathEnum.java

@@ -291,6 +291,10 @@ public enum ActionPathEnum implements ActionPath {
      * 删除群文件夹
      */
     DELETE_GROUP_FOLDER("delete_group_folder"),
+    /**
+     * 获取群文件下载链接
+     */
+    GET_GROUP_FILE_URL("get_group_file_url"),
 
     ;
 

onebot/src/main/java/cn/evole/onebot/sdk/response/group/GroupFileUrlResp.java

@@ -0,0 +1,13 @@
+package cn.evole.onebot.sdk.response.group;
+
+import lombok.Data;
+
+/**
+ * @author MrXiaoM
+ */
+@Data
+public class GroupFileUrlResp {
+
+    public String url;
+
+}

onebot/src/main/kotlin/cn/evolvefield/onebot/client/core/Bot.kt

@@ -1031,6 +1031,27 @@ class Bot(
             object : TypeToken<ActionData<GroupFilesResp>>() {}.type
         )
     }
+    /**
+     * 获取群文件下载链接
+     *
+     * @param groupId  群号
+     * @param fileId 文件ID
+     * @param busid 此参数可在群文件相关接口中获取
+     * @return [ActionData] of [GroupFileUrlResp]
+     */
+    @JvmBlockingBridge
+    suspend fun getGroupFileUrl(groupId: Long, fileId: String, busid: Int): ActionData<GroupFileUrlResp> {
+        val action = ActionPathEnum.GET_GROUP_FILE_URL
+        val params = JsonObject()
+        params.addProperty("group_id", groupId)
+        params.addProperty("file_id", fileId)
+        params.addProperty("busid", busid)
+        val result = actionHandler.action(channel, action, params)
+        return GsonUtil.fromJson(
+            result.toString(),
+            object : TypeToken<ActionData<GroupFileUrlResp>>() {}.type
+        )
+    }
 
     /**
      * 自定义请求 ActionData

overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/data/RemoteFilesWrapper.kt

@@ -203,7 +203,7 @@ class FileWrapper(
     }
 
     override suspend fun getUrl(): String? {
-        TODO("Not yet implemented")
+        return contact.botWrapper.impl.getGroupFileUrl(contact.id, id, busid).data?.url
     }
 
     override suspend fun moveTo(folder: AbsoluteFolder): Boolean {