feat: Support uploading roles and permssions via xlsx files. (#1899)

* Support uploading roles and permissions via xlsx file.

* Template xlsx file for uploading users and permissions.

* reformat according to gofumpt.

* fix typo.

controllers/role_upload.go

@@ -0,0 +1,50 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package controllers
+
+import (
+	"fmt"
+
+	"github.com/casdoor/casdoor/object"
+	"github.com/casdoor/casdoor/util"
+)
+
+func (c *ApiController) UploadRoles() {
+	userId := c.GetSessionUsername()
+	owner, user := util.GetOwnerAndNameFromId(userId)
+
+	file, header, err := c.Ctx.Request.FormFile("file")
+	if err != nil {
+		c.ResponseError(err.Error())
+		return
+	}
+
+	fileId := fmt.Sprintf("%s_%s_%s", owner, user, util.RemoveExt(header.Filename))
+
+	path := util.GetUploadXlsxPath(fileId)
+	util.EnsureFileFolderExists(path)
+	err = saveFile(path, &file)
+	if err != nil {
+		c.ResponseError(err.Error())
+		return
+	}
+
+	affected := object.UploadRoles(owner, fileId)
+	if affected {
+		c.ResponseOk()
+	} else {
+		c.ResponseError(c.T("user_upload:Failed to import users"))
+	}
+}