39 lines
937 B
Go
39 lines
937 B
Go
package checkout
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import (
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"fmt"
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messages "git.k6n.net/go-cart-actor/proto/checkout"
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)
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// mutation_remove_delivery.go
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//
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// Registers the RemoveDelivery mutation.
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//
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// Behavior:
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// - Removes the delivery entry whose Id == payload.Id.
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// - If not found, returns an error.
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// - Items previously associated with that delivery simply become "without delivery";
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// subsequent delivery mutations can reassign them.
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func HandleRemoveDelivery(g *CheckoutGrain, m *messages.RemoveDelivery) error {
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if m == nil {
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return fmt.Errorf("RemoveDelivery: nil payload")
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}
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targetID := uint32(m.Id)
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index := -1
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for i, d := range g.Deliveries {
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if d.Id == targetID {
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index = i
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break
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}
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}
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if index == -1 {
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return fmt.Errorf("RemoveDelivery: delivery id %d not found", m.Id)
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}
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// Remove delivery (order not preserved beyond necessity)
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g.Deliveries = append(g.Deliveries[:index], g.Deliveries[index+1:]...)
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return nil
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}
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