fix add cat

internal/service/revenue.go

@@ -31,15 +31,19 @@ func InsertRevenue(db *sql.DB, companyID int, currencyID int, categoryName strin
 	// Getting Category, if error, trying to insert the category with the company.
 	category, err := database.GetCategoryByName(db, companyID, categoryName)
 	if err != nil {
-		category = model.RevenueCategory{
+		err := database.InsertCategory(db, model.RevenueCategory{
 			CompanyID: companyID,
 			ParentID:  parentID,
 			Name:      categoryName,
-		}
-		err := database.InsertCategory(db, category)
+		})
 		if err != nil {
 			return err
 		}
+
+	}
+	category, err = database.GetCategoryByName(db, companyID, categoryName)
+	if err != nil {
+		return err
 	}
 
 	_, err = db.Exec(
@@ -53,3 +57,19 @@ func InsertRevenue(db *sql.DB, companyID int, currencyID int, categoryName strin
 
 	return nil
 }
+
+/*
+   CREATE TABLE IF NOT EXISTS revenue_entries (
+       id          INTEGER PRIMARY KEY AUTOINCREMENT,
+       company_id  INTEGER NOT NULL,
+       currency_id INTEGER NOT NULL,
+       category_id INTEGER NOT NULL,
+       period_id   INTEGER NOT NULL,
+       value       REAL    NOT NULL,
+       FOREIGN KEY (company_id)  REFERENCES companies(id),
+       FOREIGN KEY (currency_id) REFERENCES currencies(id),
+       FOREIGN KEY (category_id) REFERENCES category(id),
+       FOREIGN KEY (period_id)   REFERENCES periods(id),
+       UNIQUE(company_id, category_id, period_id)
+   );`
+*/