add PATCH update delivery status by id

backend/internal/delivery/handler.go

@@ -160,6 +160,47 @@ func (h *Handler) UpdateDelivery(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": "Delivery updated"})
 }
 
+// PATCH /api/deliveries/:id/status
+func (h *Handler) UpdateDeliveryStatus(c *gin.Context) {
+	var req struct {
+		Status string `json:"status"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body", "details": err.Error()})
+		return
+	}
+
+	id := c.Param("id")
+
+	if id == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "ID is required"})
+		return
+	}
+
+	parsedID, err := uuid.Parse(id)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid UUID format", "details": err.Error()})
+		return
+	}
+
+	status := req.Status
+	if status == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Status is required"})
+		return
+	}
+
+	if err := h.queries.UpdateDeliveryStatus(c.Request.Context(), sqlc.UpdateDeliveryStatusParams{
+		ID:     pgtype.UUID{Bytes: parsedID, Valid: true},
+		Status: status,
+	}); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update delivery status", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Delivery status updated"})
+}
+
 // DELETE /api/deliveries/:id
 func (h *Handler) DeleteDelivery(c *gin.Context) {
 	id := c.Param("id")