add create product endpoint

internal/application/handlers.go

@@ -2,12 +2,13 @@ package application
 
 import (
 	"net/http"
+	"vegan-barcode/internal/models"
 
 	"github.com/gin-gonic/gin"
 )
 
 func (a *Application) GetClaimsHandler(c *gin.Context) {
-	system := c.DefaultQuery("system", "upc")
+	system := c.Query("system")
 	barcode := c.Query("barcode")
 
 	productClaims, err := a.GetClaims(system, barcode)
@@ -17,3 +18,13 @@ func (a *Application) GetClaimsHandler(c *gin.Context) {
 	}
 	c.JSON(http.StatusOK, productClaims)
 }
+
+func (a *Application) PostClaimHandler(c *gin.Context) {
+	system := c.Query("system")
+	barcode := c.Query("barcode")
+
+	var requestBody models.UserClaimForm
+	c.BindJSON(&requestBody)
+
+	a.CreateClaim(system, barcode, requestBody)
+}

internal/application/services.go

@@ -1,6 +1,7 @@
 package application
 
 import (
+	"errors"
 	"vegan-barcode/internal/models"
 )
 
@@ -9,6 +10,9 @@ func (a *Application) GetClaims(system string, barcode string) (*models.ProductC
 	if err != nil {
 		return nil, err
 	}
+	if id == -1 {
+		return nil, errors.New("Product not found")
+	}
 
 	claims, err := a.db.FindClaimsByProductID(id)
 	if err != nil {
@@ -17,3 +21,20 @@ func (a *Application) GetClaims(system string, barcode string) (*models.ProductC
 
 	return &models.ProductClaims{Id: id, Claims: claims}, nil
 }
+
+func (a *Application) CreateClaim(system string, barcode string, form models.UserClaimForm) {
+	id, err := a.db.FindProductIDByBarcode(system, barcode)
+	if err != nil {
+		return nil, err
+	}
+	// no product, create new
+	if id == -1 {
+		product, err := a.db.CreateProduct()
+		if err != nil {
+			return nil, err
+		}
+		id = product.ID
+	}
+
+	claim, err := a.db.CreateUserClaim(id, form)
+}