working GET routes for items

internal/api/api.go

@@ -12,11 +12,24 @@ type ItemDTO struct {
 	id      int
 	message string
 }
+type UserDTO struct {
+	id int
+}
+
+func (user UserDTO) GetId() int {
+	return user.id
+}
 
+func ItemToDTO(item types.IItem) ItemDTO {
+	var itemDto = ItemDTO{}
+	itemDto.id = item.GetId()
+	itemDto.message = item.GetMessage()
+	return itemDto
+}
 func ItemsToDTOs(items []types.IItem) []ItemDTO {
 	var itemDtos []ItemDTO
 	for _, item := range items {
-		itemDtos = append(itemDtos, ItemDTO{id: item.GetId(), message: item.GetMessage()})
+		itemDtos = append(itemDtos, ItemToDTO(item))
 	}
 	return itemDtos
 }
@@ -42,10 +55,20 @@ func RegisterRoutes(router *gin.RouterGroup, prov types.IPersitenceProvider) {
 			c.String(http.StatusInternalServerError, err.Error())
 			return
 		}
-		c.JSON(http.StatusOK, item.ToDTO())
+		c.JSON(http.StatusOK, ItemToDTO(item))
 	})
 	router.GET("/itemByUser/:id", func(c *gin.Context) {
-
+		id, err := strconv.Atoi(c.Param("id"))
+		if err != nil {
+			c.String(404, err.Error())
+			return
+		}
+		items, err := prov.GetItemByUser(UserDTO{id: id})
+		if err != nil {
+			c.String(http.StatusInternalServerError, err.Error())
+			return
+		}
+		c.JSON(http.StatusOK, ItemsToDTOs(items))
 	})
 	router.POST("/item", func(c *gin.Context) {})
 	router.PUT("/item", func(c *gin.Context) {})