mirror of https://github.com/casbin/casnode.git
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
// Copyright 2021 The casbin Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package discuzx
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import (
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"bytes"
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"fmt"
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"image/gif"
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"image/jpeg"
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"image/png"
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"net/http"
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"net/url"
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"github.com/casbin/casnode/service"
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)
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func uploadDiscuzxAvatar(username string, fileBytes []byte, fileExt string) (string, error) {
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username = url.QueryEscape(username)
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memberId := fmt.Sprintf("%s/%s", CasdoorOrganization, username)
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fileUrl, err := service.UploadFileToStorageSafe(memberId, "avatar", "uploadDiscuzxAvatar", fmt.Sprintf("avatar/%s%s", memberId, fileExt), fileBytes, "", "")
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return fileUrl, err
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}
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func convertImageToPng(imageBytes []byte) ([]byte, string, error) {
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// Converting jpeg images to png with Golang
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// https://medium.com/@daetam/converting-jpeg-to-png-with-golang-85905105cf47
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contentType := http.DetectContentType(imageBytes)
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switch contentType {
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case "image/png":
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return imageBytes, ".png", nil
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case "image/jpeg":
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img, err := jpeg.Decode(bytes.NewReader(imageBytes))
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if err != nil {
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return nil, "", err
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}
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buf := new(bytes.Buffer)
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err = png.Encode(buf, img)
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if err != nil {
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return nil, "", err
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}
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return buf.Bytes(), ".png", nil
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case "image/gif":
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img, err := gif.Decode(bytes.NewReader(imageBytes))
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if err != nil {
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return nil, "", err
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}
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buf := new(bytes.Buffer)
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err = png.Encode(buf, img)
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if err != nil {
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return nil, "", err
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}
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return buf.Bytes(), ".png", nil
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default:
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return nil, "", fmt.Errorf("convertImageToPng() error: unsupported contentType: %s", contentType)
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}
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}
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