complete structure revamp

api/helpers.go

@@ -0,0 +1,49 @@
+package api
+
+func NewReceiptRow(name string, cnt int, price float64, taxgrp string) ReceiptRow {
+	return ReceiptRow{
+		Name:   name,
+		Cnt:    cnt,
+		Price:  price,
+		Taxgrp: taxgrp,
+	}
+}
+
+func NewReceiptPayCash(sum float64, comment string) ReceiptPay {
+	return ReceiptPay{
+		Type:    PayTypeCash,
+		Sum:     sum,
+		Comment: comment,
+	}
+}
+
+func NewReceiptPayCard(sum float64, cardmask, bankID, rrnCode, authCode string) ReceiptPay {
+	return ReceiptPay{
+		Type:     PayTypeCard,
+		Sum:      sum,
+		Paysys:   PaySystemParkingPos,
+		Cardmask: cardmask,
+		BankID:   bankID,
+		Rrn:      rrnCode,
+		AuthCode: authCode,
+	}
+}
+
+func CalculateReceiptSum(rows []ReceiptRow) float64 {
+	sum := 0.0
+	for _, row := range rows {
+		sum += (row.Price - row.Disc) * float64(row.Cnt)
+	}
+	return sum
+}
+
+func NewReceipt(rows []ReceiptRow, pays []ReceiptPay) Receipt {
+	return Receipt{
+		Sum:      CalculateReceiptSum(rows),
+		Round:    0.00,
+		Disc:     0,
+		DiscType: 0,
+		Rows:     rows,
+		Pays:     pays,
+	}
+}