feat: add format setting for completion

converter/constant/format.go

@@ -1,8 +1,31 @@
 package constant
 
-type ConversionFormat string
+import "github.com/thediveo/enumflag/v2"
+
+type ConversionFormat enumflag.Flag
 
 const (
-	ImageFormatWebP    ConversionFormat = "webp"
-	ImageFormatUnknown ConversionFormat = ""
+	WebP ConversionFormat = iota
 )
+
+var CommandValue = map[ConversionFormat][]string{
+	WebP: {"webp"},
+}
+
+var HelpText = enumflag.Help[ConversionFormat]{
+	WebP: "WebP Image Format",
+}
+
+var DefaultConversion = WebP
+
+func (c ConversionFormat) String() string {
+	return CommandValue[c][0]
+}
+
+func ListAll() []string {
+	var formats []string
+	for _, names := range CommandValue {
+		formats = append(formats, names[0])
+	}
+	return formats
+}

converter/converter.go

@@ -17,7 +17,7 @@ type Converter interface {
 }
 
 var converters = map[constant.ConversionFormat]Converter{
-	constant.ImageFormatWebP: webp.New(),
+	constant.WebP: webp.New(),
 }
 
 // Available returns a list of available converters.
@@ -28,11 +28,11 @@ func Available() []constant.ConversionFormat {
 // Get returns a packer by name.
 // If the packer is not available, an error is returned.
 func Get(name constant.ConversionFormat) (Converter, error) {
-	if packer, ok := converters[name]; ok {
-		return packer, nil
+	if converter, ok := converters[name]; ok {
+		return converter, nil
 	}
 
 	return nil, fmt.Errorf("unkown converter \"%s\", available options are %s", name, strings.Join(lo.Map(Available(), func(item constant.ConversionFormat, index int) string {
-		return string(item)
+		return item.String()
 	}), ", "))
 }

converter/webp/webp_converter.go

@@ -25,7 +25,7 @@ type Converter struct {
 }
 
 func (converter *Converter) Format() (format constant.ConversionFormat) {
-	return constant.ImageFormatWebP
+	return constant.WebP
 }
 
 func New() *Converter {
@@ -203,8 +203,8 @@ func (converter *Converter) convertPage(container *packer2.PageContainer, qualit
 	return container, nil
 }
 
-// convert converts an image to the ImageFormatWebP format. It decodes the image from the input buffer,
-// encodes it as a ImageFormatWebP file using the webp.Encode() function, and returns the resulting ImageFormatWebP
+// convert converts an image to the WebP format. It decodes the image from the input buffer,
+// encodes it as a WebP file using the webp.Encode() function, and returns the resulting WebP
 // file as a bytes.Buffer.
 func (converter *Converter) convert(image image.Image, quality uint) (*bytes.Buffer, error) {
 	var buf bytes.Buffer