Implement swagger

api/handlers/artist_handler.go

@@ -15,10 +15,18 @@ func NewArtistHandler(repo repository.ArtistRepository) *ArtistHandler {
 	return &ArtistHandler{repo: repo}
 }
 
+// GetAll godoc
+// @Summary List all artists
+// @Tags artist
+// @Produce json
+// @Success 200 {array} map[string]interface{}
+// @Failure 500 {object} ErrorResponse
+// @Router /artist/getAll [get]
 func (handler *ArtistHandler) GetAll(c *gin.Context) {
 	artists, err := handler.repo.GetAll(c.Request.Context())
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
 	}
 
 	c.JSON(http.StatusOK, artists)