Create API for adding an avatar to a user

platform/avatar.go

@@ -0,0 +1,40 @@
+package platform
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	"github.com/Gleipnir-Technology/nidus-sync/platform/file"
+	"github.com/disintegration/imaging"
+	"github.com/rs/zerolog/log"
+)
+
+func AvatarCreate(ctx context.Context, u User, upload file.Upload) error {
+	f, err := file.NewFileReader(file.CollectionAvatar, upload.UUID)
+	// Decode image (supports PNG, JPG, GIF)
+	img, err := imaging.Decode(f)
+	if err != nil {
+		return fmt.Errorf("decode: %w", err)
+	}
+
+	// Resize to 200x200, maintaining aspect ratio
+	avatar := imaging.Fill(img, 200, 200, imaging.Center, imaging.Lanczos)
+
+	// Save or encode
+	//filename := fmt.Sprintf("avatar-%s.jpg", upload.UUID.String())
+	//err = imaging.Save(avatar, filename)
+	//log.Info().Str("filename", filename).Msg("wrote avatar file")
+	// Or encode to buffer: imaging.Encode(writer, avatar, imaging.JPEG)
+	writer := &bytes.Buffer{}
+	err = imaging.Encode(writer, avatar, imaging.PNG)
+	if err != nil {
+		return fmt.Errorf("encode: %w", err)
+	}
+	err = file.FileContentWrite(writer, file.CollectionAvatar, upload.UUID)
+	if err != nil {
+		return fmt.Errorf("write content: %w", err)
+	}
+	log.Info().Str("uuid", upload.UUID.String()).Msg("wrote avatar file")
+	return nil
+}

platform/file/base.go

@@ -19,6 +19,7 @@ var collectionToExtension map[Collection]string = map[Collection]string{
 	CollectionAudioNormalized: "ogg",
 	CollectionAudioRaw:        "raw",
 	CollectionAudioTranscoded: "ogg",
+	CollectionAvatar:          "png",
 	CollectionCSV:             "csv",
 	CollectionLogo:            "png",
 	CollectionPublicImage:     "img",
@@ -28,6 +29,7 @@ var collectionToSubdir map[Collection]string = map[Collection]string{
 	CollectionAudioNormalized: "audio-normalized",
 	CollectionAudioRaw:        "audio-raw",
 	CollectionAudioTranscoded: "audio-transcoded",
+	CollectionAvatar:          "avatar",
 	CollectionCSV:             "csv",
 	CollectionLogo:            "logo",
 	CollectionPublicImage:     "public-image",

platform/file/enum.go

@@ -6,6 +6,7 @@ const (
 	CollectionAudioRaw Collection = iota
 	CollectionAudioNormalized
 	CollectionAudioTranscoded
+	CollectionAvatar
 	CollectionCSV
 	CollectionImageRaw
 	CollectionLogo