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customers.go
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customers.go
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package db
func CreateCustomer(name, shippingAddr string) (int, error) {
database := Connect().Db
database.Exec(`
INSERT INTO Customers (name, shippingAddress, accountBalance)
VALUES (?, ?, 5.0);
`, name, shippingAddr)
return GetCustomerId(name, shippingAddr)
}
func GetCustomerId(name, shippingAddr string) (int, error) {
database := Connect().Db
rows, err := database.Query(`
SELECT (id) FROM Customers
WHERE name = ? and shippingAddress = ?;
`, name, shippingAddr)
if err != nil {
return 0, err
}
defer rows.Close()
var cid int
err = rows.Scan(&cid)
if err != nil {
return 0, err
}
return cid, nil
}
func GetCustomerAddress(cid int) (string, error) {
database := Connect().Db
rows, err := database.Query(`
SELECT (shippingAddress)
FROM Customers
WHERE id = ?;
`, cid)
if err != nil {
return "", err
}
defer rows.Close()
var addr string
err = rows.Scan(&addr)
if err != nil {
return "", err
}
return addr, nil
}
func UpdateCustomerAddress(cid int, newAddr string) error {
database := Connect().Db
_, err := database.Exec(`
UPDATE Customers
SET shippingAddress = ?
WHERE id = ?;
`, newAddr, cid)
return err
}
func CustomerBalance(cid int) (float32, error) {
database := Connect().Db
rows, err := database.Query(`
SELECT (accountBalance)
FROM Customers
WHERE id = ?;
`, cid)
if err != nil {
return 0, err
}
defer rows.Close()
var balance float32
err = rows.Scan(&balance)
if err != nil {
return 0, err
}
return balance, nil
}
func ChargeCustomerForPO(pid int) error {
return nil
}