feat(BE-281): fixing recording error, fixing limit upload uniformity and purchase, add filter and statistic uniformity

internal/modules/purchases/controllers/purchase.controller.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"math"
+	"mime/multipart"
 	"strconv"
 	"strings"
 
@@ -15,6 +16,8 @@ import (
 	"github.com/gofiber/fiber/v2"
 )
 
+const maxPurchaseUploadBytes = 5 * 1024 * 1024
+
 type PurchaseController struct {
 	service service.PurchaseService
 }
@@ -184,6 +187,9 @@ func (ctrl *PurchaseController) ReceiveProducts(c *fiber.Ctx) error {
 	if len(req.TravelDocuments) == 0 {
 		req.TravelDocuments = form.File["documents"]
 	}
+	if err := validatePurchaseDocumentSizes(req.TravelDocuments); err != nil {
+		return err
+	}
 	result, err := ctrl.service.ReceiveProducts(c, uint(id), req)
 	if err != nil {
 		return err
@@ -198,6 +204,15 @@ func (ctrl *PurchaseController) ReceiveProducts(c *fiber.Ctx) error {
 		})
 }
 
+func validatePurchaseDocumentSizes(files []*multipart.FileHeader) error {
+	for _, file := range files {
+		if file != nil && file.Size > maxPurchaseUploadBytes {
+			return fiber.NewError(fiber.StatusRequestEntityTooLarge, "Document size must be <= 5MB")
+		}
+	}
+	return nil
+}
+
 func (ctrl *PurchaseController) DeleteItems(c *fiber.Ctx) error {
 	param := c.Params("id")
 	id, err := strconv.Atoi(param)