1 files changed, 15 insertions, 11 deletions
diff --git a/models/user/avatar.go b/models/user/avatar.go
index 5453c78fc6..542bd93b98 100644
--- a/models/user/avatar.go
+++ b/models/user/avatar.go
@@ -5,7 +5,6 @@ package user
 
 import (
 	"context"
-	"crypto/md5"
 	"fmt"
 	"image/png"
 	"io"
@@ -38,27 +37,32 @@ func GenerateRandomAvatar(ctx context.Context, u *User) error {
 
 	u.Avatar = avatars.HashEmail(seed)
 
-	// Don't share the images so that we can delete them easily
-	if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
-		if err := png.Encode(w, img); err != nil {
-			log.Error("Encode: %v", err)
+	_, err = storage.Avatars.Stat(u.CustomAvatarRelativePath())
+	if err != nil {
+		// If unable to Stat the avatar file (usually it means non-existing), then try to save a new one
+		// Don't share the images so that we can delete them easily
+		if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
+			if err := png.Encode(w, img); err != nil {
+				log.Error("Encode: %v", err)
+			}
+			return nil
+		}); err != nil {
+			return fmt.Errorf("failed to save avatar %s: %w", u.CustomAvatarRelativePath(), err)
 		}
-		return err
-	}); err != nil {
-		return fmt.Errorf("Failed to create dir %s: %w", u.CustomAvatarRelativePath(), err)
 	}
 
 	if _, err := db.GetEngine(ctx).ID(u.ID).Cols("avatar").Update(u); err != nil {
 		return err
 	}
 
-	log.Info("New random avatar created: %d", u.ID)
 	return nil
 }
 
 // AvatarLinkWithSize returns a link to the user's avatar with size. size <= 0 means default size
 func (u *User) AvatarLinkWithSize(ctx context.Context, size int) string {
-	if u.IsGhost() {
+	// ghost user was deleted, Gitea actions is a bot user, 0 means the user should be a virtual user
+	// which comes from git configure information
+	if u.IsGhost() || u.IsGiteaActions() || u.ID <= 0 {
 		return avatars.DefaultAvatarLink()
 	}
 
@@ -101,7 +105,7 @@ func (u *User) IsUploadAvatarChanged(data []byte) bool {
 	if !u.UseCustomAvatar || len(u.Avatar) == 0 {
 		return true
 	}
-	avatarID := fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%d-%x", u.ID, md5.Sum(data)))))
+	avatarID := avatar.HashAvatar(u.ID, data)
 	return u.Avatar != avatarID
 }