moving insert to another model and done so in database internal

internal/handlers/revenue.go

@@ -3,7 +3,6 @@ package handlers
 import (
 	"Portifolio/internal/database"
 	"Portifolio/internal/model"
-	"Portifolio/internal/service"
 	"database/sql"
 	"encoding/json"
 	"fmt"
@@ -41,7 +40,16 @@ func AddRevenueEntryHandler(db *sql.DB) http.HandlerFunc {
 			return
 		}
 
-		if err := service.InsertRevenue(db, input.CompanyID, input.CurrencyID, input.Category, nil, input.Value, period); err != nil {
+		rev := model.RevenueInsert{
+			CompanyID:    input.CompanyID,
+			CurrencyID:   input.CurrencyID,
+			CategoryName: input.Category,
+			Period:       period,
+			Value:        input.Value,
+		}
+
+		err := database.InsertRevenue(db, rev)
+		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}