70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
package cart
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import (
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"slices"
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"git.k6n.net/go-cart-actor/pkg/actor"
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messages "git.k6n.net/go-cart-actor/proto/cart"
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)
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func RemoveVoucher(g *CartGrain, m *messages.RemoveVoucher) error {
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if m == nil {
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return &actor.MutationError{
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Message: "RemoveVoucher: nil payload",
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Code: 1003,
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StatusCode: 400,
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}
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}
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if g.CheckoutStatus != nil {
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return ErrPaymentInProgress
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}
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if !slices.ContainsFunc(g.Vouchers, func(v *Voucher) bool {
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return v.Id == m.Id
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}) {
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return &actor.MutationError{
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Message: "voucher not applied",
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Code: 1004,
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StatusCode: 400,
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}
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}
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g.Vouchers = slices.DeleteFunc(g.Vouchers, func(v *Voucher) bool {
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return v.Id == m.Id
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})
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g.UpdateTotals()
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return nil
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}
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func AddVoucher(g *CartGrain, m *messages.AddVoucher) error {
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if m == nil {
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return &actor.MutationError{
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Message: "AddVoucher: nil payload",
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Code: 1001,
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StatusCode: 400,
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}
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}
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if slices.ContainsFunc(g.Vouchers, func(v *Voucher) bool {
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return v.Code == m.Code
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}) {
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return &actor.MutationError{
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Message: "voucher already applied",
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Code: 1002,
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StatusCode: 400,
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}
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}
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g.lastVoucherId++
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g.Vouchers = append(g.Vouchers, &Voucher{
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Id: g.lastVoucherId,
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Applied: false,
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Description: m.Description,
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Code: m.Code,
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Rules: m.VoucherRules,
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Value: m.Value,
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})
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g.UpdateTotals()
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return nil
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}
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