Add order update feature to the delivery service

Created a new endpoint to update order status through a POST request. Implemented backend logic to handle various order statuses and update accordingly in the database. Added necessary data models and context handling for robust operation.

pkg/database/models/delivery/delivery.go

@@ -41,3 +41,8 @@ type DeliveryLoginParams struct {
 	Phone string `json:"phone"`
 	OTP   string `json:"otp"`
 }
+
+type DeliveryOrderPlacementParams struct {
+	OrderID int64  `json:"order_id"`
+	Status  string `json:"status"`
+}

pkg/handler/delivery/order.go

@@ -0,0 +1,29 @@
+package delivery
+
+import (
+	"Go_Food_Delivery/pkg/database/models/delivery"
+	"context"
+	"github.com/gin-gonic/gin"
+	"net/http"
+	"time"
+)
+
+func (s *DeliveryHandler) updateOrder(c *gin.Context) {
+	ctx, cancel := context.WithTimeout(c.Request.Context(), 5*time.Second)
+	defer cancel()
+
+	var deliveryOrder delivery.DeliveryOrderPlacementParams
+	if err := c.BindJSON(&deliveryOrder); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid request"})
+		return
+	}
+
+	_, err := s.service.OrderPlacement(ctx, deliveryOrder.OrderID, deliveryOrder.Status)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{"message": "Order Updated!"})
+
+}

pkg/handler/delivery/routes.go

@@ -12,6 +12,6 @@ func (s *DeliveryHandler) registerGroup(middleware ...gin.HandlerFunc) gin.IRout
 func (s *DeliveryHandler) routes() http.Handler {
 	s.router.POST("/add", s.addDeliveryPerson)
 	s.router.POST("/login", s.loginDelivery)
-
+	s.router.POST("/update-order", s.updateOrder)
 	return s.serve.Gin
 }

pkg/service/delivery/order_placement.go

@@ -0,0 +1,34 @@
+package delivery
+
+import (
+	"Go_Food_Delivery/pkg/database"
+	"Go_Food_Delivery/pkg/database/models/order"
+	"context"
+	"errors"
+)
+
+func (deliverSrv *DeliveryService) OrderPlacement(ctx context.Context, orderID int64, deliveryStatus string) (bool, error) {
+	var orderInfo order.Order
+	setFilter := database.Filter{"order_status": deliveryStatus}
+	whereFilter := database.Filter{"order_id": orderID}
+
+	// Check the order is valid or not.
+	err := deliverSrv.db.Select(ctx, &orderInfo, "order_id", orderID)
+	if err != nil {
+		return false, err
+	}
+
+	switch orderInfo.OrderStatus {
+	case "in_progress":
+		_, err := deliverSrv.db.Update(ctx, "orders", setFilter, whereFilter)
+		if err != nil {
+			return false, err
+		}
+		return true, nil
+	case "failed", "completed", "cancelled", "on_the_way":
+		return false, errors.New("this order is invalid or has been already delivered/on_the_way/cancelled")
+	default:
+		return false, errors.New("unknown order status")
+	}
+
+}