add basic cart

controllers/cartItemController.go

@@ -0,0 +1,239 @@
+package controllers
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+  "crypto/rand"
+  "encoding/hex"
+
+	"github.com/gin-gonic/gin"
+
+	"example.com/gin/test/models"
+	//"example.com/gin/test/services"
+	"example.com/gin/test/repositories"
+)
+
+type CartItemController interface {
+	//CRUDController
+	CartItemView(*gin.Context)
+	AddItemHandler(*gin.Context)
+	//EditCartItemHandler(*gin.Context)
+	//DeleteCartItemHandler(*gin.Context)
+}
+
+type cartItemController struct {}
+
+func NewCartItemController() CartItemController {
+	return &cartItemController{}
+}
+
+func generateSessionId() string {
+    bytes := make([]byte, 16) // 16 bytes = 128 bits
+    _, err := rand.Read(bytes)
+    if err != nil {
+        panic("failed to generate session ID")
+    }
+    return hex.EncodeToString(bytes)
+}
+
+func GetSessionId(ctx *gin.Context) string {
+	sessionId, err := ctx.Cookie("session_id")
+
+	if err != nil {
+		sessionId = generateSessionId()
+		ctx.SetCookie("session_id", sessionId, 3600, "/", "", false, true)
+	}
+
+	return sessionId
+}
+
+func (rc *cartItemController) NewCartItemFromForm(ctx *gin.Context) (models.CartItem, error) {
+	fmt.Println("NEWITEM")
+	sessionId := GetSessionId(ctx)
+
+	shopItemId, err := strconv.Atoi(ctx.PostForm("ShopItemId"))
+
+	if err != nil {
+		return models.CartItem{}, err
+	}
+
+	quantity := 1
+	//quantity, err := strconv.Atoi(ctx.PostForm("quantity"))
+
+	//if err != nil {
+	//	return models.CartItem{}, err
+	//}
+
+	cartItem := models.CartItem{
+		SessionId: sessionId,
+		ShopItemId: shopItemId,
+		Quantity: quantity,
+	}
+
+	fmt.Println("NEWITEM")
+	return cartItem, nil
+}
+
+
+func (rc *cartItemController) Create(c *gin.Context) {
+	cartItem, err := rc.NewCartItemFromForm(c)
+
+	if err != nil {
+		ReplyError(c, fmt.Errorf("cartItem creation failed: %s", err))
+		return
+	}
+
+	_, err = repositories.CartItems.Create(cartItem)
+
+	if err != nil {
+		ReplyError(c, fmt.Errorf("cartItem creation failed: %s", err))
+		return
+	}
+
+	ReplyOK(c, "cartItem was created")
+}
+
+
+func (rc *cartItemController) Update(c *gin.Context) {
+	cartItem, err := rc.NewCartItemFromForm(c)
+
+	if err != nil {
+		ReplyError(c, err)
+		return
+	}
+
+	_, err = repositories.CartItems.Update(cartItem)
+
+	if err != nil {
+		ReplyError(c, fmt.Errorf("cartItem creation failed: %s", err))
+		return
+	}
+
+	ReplyOK(c, "cartItem was updated")
+}
+
+//func (rc *cartItemController) Delete(c *gin.Context) {
+//	err := repositories.CartItems.DeleteBySessionId(c.Param("id"))
+//
+//	if err != nil {
+//		ReplyError(c, fmt.Errorf("cartItem deletion failed: %s", err))
+//		return
+//	}
+//
+//	ReplyOK(c, "cartItem was deleted")
+//}
+
+func (rc *cartItemController) CartItemView(c *gin.Context) {
+	sessionId := GetSessionId(c)
+
+	cartItems, err := repositories.CartItems.GetAllBySession(sessionId)
+
+	if err != nil {
+		c.HTML(http.StatusBadRequest, "cart.html", gin.H{ "data": gin.H{ "error": err } })
+	}
+
+	data := CreateSessionData(c, gin.H{
+		"cartItems": cartItems,
+	})
+
+	c.HTML(http.StatusOK, "cart.html", data)
+}
+
+func (rc *cartItemController) AddItemHandler(c *gin.Context) {
+	cartItem, err := rc.NewCartItemFromForm(c)
+
+	if err != nil {
+		fmt.Println(err)
+		c.HTML(http.StatusBadRequest, "cart.html", gin.H{ "error": err })
+		return
+	}
+
+	_, err = repositories.CartItems.Create(cartItem)
+	if err != nil {
+		data := CreateSessionData(c, gin.H{
+			"error": err,
+			"success": "",
+		})
+
+		c.HTML(http.StatusOK, "cart.html", data)
+		return
+	}
+
+	rc.CartItemView(c)
+}
+
+
+//func (rc *cartItemController) EditItemHandler(c *gin.Context) {
+//	cartItem, err := rc.NewCartItemFromForm(c)
+//
+//	if err != nil {
+//		c.HTML(http.StatusBadRequest, "edititem.html", gin.H{ "error": err })
+//		return
+//	}
+//
+//	newCartItem, err := repositories.ShopItems.GetById(c.Param("id"))
+//
+//	if err != nil {
+//		c.HTML(http.StatusBadRequest, "edititem.html", gin.H{ "error": err })
+//		return
+//	}
+//
+//	newCartItem.Name = cartItem.Name
+//	newCartItem.Abstract = cartItem.Abstract
+//	newCartItem.Description = cartItem.Description
+//	newCartItem.Price = cartItem.Price
+//	newCartItem.IsPublic = cartItem.IsPublic
+//	newCartItem.Tags = cartItem.Tags
+//
+//	tags, err := repositories.Tags.GetAll()
+//	if err != nil {
+//		c.HTML(http.StatusBadRequest, "edititem.html", gin.H{ "error": err })
+//		return
+//	}
+//
+//	_, err = repositories.CartItems.Update(newShopItem)
+//	if err != nil {
+//		data := CreateSessionData(c, gin.H{
+//			"error": err,
+//			"success": "",
+//			"tags": tags,
+//		})
+//
+//		c.HTML(http.StatusOK, "edititem.html", data)
+//		return
+//	}
+//
+//	data := CreateSessionData(c, gin.H{
+//		"error": "",
+//		"success": fmt.Sprintf("Item '%s' Updated", newCartItem.Name),
+//		"tags": tags,
+//	})
+//
+//	c.HTML(http.StatusOK, "edititem.html", data)
+//}
+
+//func (rc *cartItemController) DeleteItemHandler(c *gin.Context) {
+//	err := repositories.CartItems.DeleteById(c.Param("id"))
+//
+//	if err != nil {
+//		data := CreateSessionData(c, gin.H{
+//			"error": err,
+//			"success": "",
+//		})
+//
+//		c.HTML(http.StatusOK, "deleteitem.html", data)
+//	}
+//
+//	cartItems, _ := repositories.CartItems.GetAll()
+//	fmt.Println(len(cartItems))
+//
+//	data := CreateSessionData(c, gin.H{
+//		"title": "cartItem Page",
+//		"cartItems": shopItems,
+//	})
+//
+//	fmt.Println(data)
+//
+//	c.HTML(http.StatusOK, "index.html", data)
+//}