feat: add support for WEBP profile pictures (#1090)

backend/internal/service/ldap_service.go

@@ -440,7 +440,7 @@ func (s *LdapService) SyncUsers(ctx context.Context, tx *gorm.DB, client *ldap.C
 }
 
 func (s *LdapService) saveProfilePicture(parentCtx context.Context, userId string, pictureString string) error {
-	var reader io.Reader
+	var reader io.ReadSeeker
 
 	_, err := url.ParseRequestURI(pictureString)
 	if err == nil {
@@ -460,7 +460,12 @@ func (s *LdapService) saveProfilePicture(parentCtx context.Context, userId strin
 		}
 		defer res.Body.Close()
 
-		reader = res.Body
+		data, err := io.ReadAll(res.Body)
+		if err != nil {
+			return fmt.Errorf("failed to read profile picture: %w", err)
+		}
+
+		reader = bytes.NewReader(data)
 	} else if decodedPhoto, err := base64.StdEncoding.DecodeString(pictureString); err == nil {
 		// If the photo is a base64 encoded string, decode it
 		reader = bytes.NewReader(decodedPhoto)

backend/internal/service/user_service.go

@@ -159,7 +159,7 @@ func (s *UserService) GetUserGroups(ctx context.Context, userID string) ([]model
 	return user.UserGroups, nil
 }
 
-func (s *UserService) UpdateProfilePicture(ctx context.Context, userID string, file io.Reader) error {
+func (s *UserService) UpdateProfilePicture(ctx context.Context, userID string, file io.ReadSeeker) error {
 	// Validate the user ID to prevent directory traversal
 	err := uuid.Validate(userID)
 	if err != nil {

backend/internal/utils/image/profile_picture.go

@@ -12,24 +12,36 @@ import (
 	"golang.org/x/image/font"
 	"golang.org/x/image/font/opentype"
 	"golang.org/x/image/math/fixed"
+	"golang.org/x/image/webp"
 
 	"github.com/pocket-id/pocket-id/backend/resources"
 )
 
 const profilePictureSize = 300
 
-// CreateProfilePicture resizes the profile picture to a square
+// CreateProfilePicture resizes the profile picture to a square and encodes it as PNG
-func CreateProfilePicture(file io.Reader) (io.ReadSeeker, error) {
+func CreateProfilePicture(file io.ReadSeeker) (io.ReadSeeker, error) {
+	// Attempt standard formats first
 	img, _, err := imageorient.Decode(file)
 	if err != nil {
-		return nil, fmt.Errorf("failed to decode image: %w", err)
+		if _, seekErr := file.Seek(0, io.SeekStart); seekErr != nil {
+			return nil, fmt.Errorf("failed to seek file: %w", seekErr)
+		}
+		// Try WebP
+		webpImg, webpErr := webp.Decode(file)
+		if webpErr != nil {
+			return nil, fmt.Errorf("failed to decode image: %w", err)
+		}
+
+		img = webpImg
 	}
 
+	// Resize to square
 	img = imaging.Fill(img, profilePictureSize, profilePictureSize, imaging.Center, imaging.Lanczos)
 
+	// Encode back to PNG
 	var buf bytes.Buffer
-	err = imaging.Encode(&buf, img, imaging.PNG)
+	if err := imaging.Encode(&buf, img, imaging.PNG); err != nil {
-	if err != nil {
 		return nil, fmt.Errorf("failed to encode image: %w", err)
 	}