package main import ( tfgo "codeberg.org/jlelse/tinify" "errors" "io/ioutil" "os" "sort" "strings" ) type ImageCompression interface { Compress(url string) (location string, err error) } // Tinify type Tinify struct { // API Key key string } func (t Tinify) Compress(url string) (location string, err error) { fileExtension := func() string { spliced := strings.Split(url, ".") return spliced[len(spliced)-1] }() supportedTypes := []string{"jpg", "jpeg", "png"} sort.Strings(supportedTypes) i := sort.SearchStrings(supportedTypes, strings.ToLower(fileExtension)) if !(i < len(supportedTypes) && supportedTypes[i] == strings.ToLower(fileExtension)) { err = errors.New("file not supported") return } tfgo.SetKey(t.key) s, e := tfgo.FromUrl(url) if e != nil { err = errors.New("failed to compress file") return } e = s.Resize(&tfgo.ResizeOption{ Method: tfgo.ResizeMethodScale, Width: 2000, }) if e != nil { err = errors.New("failed to resize file") return } file, e := ioutil.TempFile("", "tiny-*."+fileExtension) if e != nil { err = errors.New("failed to create temporary file") return } defer func() { _ = os.Remove(file.Name()) }() e = s.ToFile(file.Name()) if e != nil { err = errors.New("failed to save compressed file") return } hashFile, e := os.Open(file.Name()) defer func() { _ = hashFile.Close() }() if e != nil { err = errors.New("failed to open temporary file") return } fileName, err := getSHA256(hashFile) if err != nil { return } location, err = SelectedMediaStorage.Upload(fileName+"."+fileExtension, file) return }