31 lines
659 B
Go
31 lines
659 B
Go
package checkout
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import (
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"errors"
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"slices"
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messages "git.k6n.net/mats/go-cart-actor/proto/checkout"
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)
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func HandlePaymentCancelled(g *CheckoutGrain, m *messages.CancelPayment) error {
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payment, found := g.FindPayment(m.PaymentId)
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if !found {
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return ErrPaymentNotFound
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}
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if payment.CompletedAt != nil {
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return errors.New("payment already completed")
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}
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g.PaymentInProgress--
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g.AmountInCentsStarted -= payment.Amount
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g.Payments = removePayment(g.Payments, payment.PaymentId)
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return nil
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}
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func removePayment(payment []*Payment, s string) []*Payment {
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return slices.DeleteFunc(payment, func(p *Payment) bool {
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return p.PaymentId == s
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})
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}
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