2 files changed, 61 insertions, 2 deletions
diff --git a/internal/service/share.go b/internal/service/share.go
index 2b917f7..9032f8c 100644
--- a/internal/service/share.go
+++ b/internal/service/share.go
@@ -147,6 +147,12 @@ func (s *shareService) GetSharedMedia(ctx context.Context, token string) (*GetSh
 		return nil, ErrMediaNotFound
 	}
 
+	hasThumb := media.ThumbnailPath != ""
+	thumbURL := ""
+	if hasThumb {
+		thumbURL = fmt.Sprintf("/s/%s/thumbnail", token)
+	}
+
 	return &GetSharedMediaResult{
 		Media: &SharedMediaView{
 			ID:            media.ID,
@@ -158,10 +164,10 @@ func (s *shareService) GetSharedMedia(ctx context.Context, token string) (*GetSh
 			Bitrate:       media.Bitrate,
 			FileSizeBytes: media.FileSizeBytes,
 		},
-		HasThumb:    media.ThumbnailPath != "",
+		HasThumb:    hasThumb,
 		StreamURL:   fmt.Sprintf("/s/%s/stream", token),
 		DownloadURL: fmt.Sprintf("/s/%s/download", token),
-		ThumbURL:    fmt.Sprintf("/s/%s/thumbnail", token),
+		ThumbURL:    thumbURL,
 	}, nil
 }
 
diff --git a/internal/service/share_test.go b/internal/service/share_test.go
index a37b62f..ab76414 100644
--- a/internal/service/share_test.go
+++ b/internal/service/share_test.go
@@ -74,6 +74,59 @@ func TestShareService_GetSharedThumbnail(t *testing.T) {
 	}
 }
 
+func TestShareService_GetSharedMedia_ThumbnailURL(t *testing.T) {
+	ctx := context.Background()
+	now := newMockClock().T
+
+	tests := []struct {
+		name         string
+		thumbnail    string
+		wantHasThumb bool
+		wantThumbURL string
+	}{
+		{
+			name:         "with thumbnail",
+			thumbnail:    "/tmp/thumb.jpg",
+			wantHasThumb: true,
+			wantThumbURL: "/s/abc/thumbnail",
+		},
+		{
+			name:         "without thumbnail",
+			thumbnail:    "",
+			wantHasThumb: false,
+			wantThumbURL: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			store := &repository.MockStore{
+				ShareRepo: repository.MockShareRepo{
+					GetShareByTokenFunc: func(ctx context.Context, token string) (*model.Share, error) {
+						return &model.Share{Token: "abc", MediaID: 1, ExpiresAt: now.Add(time.Hour)}, nil
+					},
+				},
+				MediaRepo: repository.MockMediaRepo{
+					GetMediaByIDFunc: func(ctx context.Context, id int64) (*model.Media, error) {
+						return &model.Media{ID: 1, ThumbnailPath: tt.thumbnail}, nil
+					},
+				},
+			}
+			svc := NewShareService(store, newMockClock(), &accessHelper{store: store})
+			got, err := svc.GetSharedMedia(ctx, "abc")
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+			if got.HasThumb != tt.wantHasThumb {
+				t.Fatalf("HasThumb = %v, want %v", got.HasThumb, tt.wantHasThumb)
+			}
+			if got.ThumbURL != tt.wantThumbURL {
+				t.Fatalf("ThumbURL = %q, want %q", got.ThumbURL, tt.wantThumbURL)
+			}
+		})
+	}
+}
+
 func TestShareService_ListMyShares(t *testing.T) {
 	ctx := context.Background()
 	now := newMockClock().T