moving insert to another model and done so in database internal

internal/database/portfolio.go

@@ -36,7 +36,7 @@ func GetTrades(db *sql.DB) ([]model.Trade, error) {
 		if err != nil {
 			return nil, err
 		}
-		t.Currency = currency
+		t.Currency = currency.Name
 		t.Ticker = *company
 		switch TypeInt {
 		case 0:
@@ -83,7 +83,7 @@ func InsertTrade(db *sql.DB, trade model.Trade) error {
 	_, err := db.Exec(
 		"INSERT INTO trades (company_id, currency_id, shares, product, type, price, traded_at) VALUES (?, ?, ?, ?, ?, ?, ?)",
 		trade.Ticker.ID,
-		trade.Currency.ID,
+		trade.Currency,
 		trade.Shares,
 		trade.Product,
 		trade.Type,

internal/database/revenue.go

@@ -82,3 +82,52 @@ func GetRevenueByCategory(db *sql.DB, companyID int, categoryID int) ([]model.Re
 
 	return revenues, nil
 }
+
+func InsertRevenue(db *sql.DB, rev model.RevenueInsert) error {
+	_, err := GetCompanyByID(db, rev.CompanyID)
+	if err != nil {
+		return err
+	}
+
+	_, err = GetCurrencyByID(db, rev.CurrencyID)
+	if err != nil {
+		return err
+	}
+
+	// checking if period is in db, in case not will insert
+	_, err = GetPeriodByID(db, rev.Period.ID)
+	if err != nil {
+		err = rev.Period.Insert(db)
+		if err != nil {
+			return err
+		}
+	}
+	// Getting Category, if error, trying to insert the category with the company.
+	category, err := GetCategoryByName(db, rev.CompanyID, rev.CategoryName)
+	if err != nil {
+		err := InsertCategory(db, model.RevenueCategory{
+			CompanyID: rev.CompanyID,
+			ParentID:  &rev.ParentID,
+			Name:      rev.CategoryName,
+		})
+		if err != nil {
+			return err
+		}
+
+	}
+	category, err = GetCategoryByName(db, rev.CompanyID, rev.CategoryName)
+	if err != nil {
+		return err
+	}
+
+	_, err = db.Exec(
+		`INSERT INTO revenue_entries (company_id, currency_id, category_id, period_id, value)
+         VALUES (?, ?, ?, ?, ?)`,
+		rev.CompanyID, rev.CurrencyID, category.ID, rev.Period.ID, rev.Value,
+	)
+	if err != nil {
+		return fmt.Errorf("insert revenue_entries: %w", err)
+	}
+
+	return nil
+}