45 lines
1.4 KiB
Go
45 lines
1.4 KiB
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_set_pickup_point.go
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//
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// Registers the SetPickupPoint mutation using the generic mutation registry.
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//
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// Semantics (mirrors original switch-based implementation):
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// - Locate the delivery with Id == payload.DeliveryId
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// - Set (or overwrite) its PickupPoint with the provided data
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// - Does NOT alter pricing or taxes (so no totals recalculation required)
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//
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// Validation / Error Handling:
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// - If payload is nil -> error
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// - If DeliveryId not found -> error
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//
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// Concurrency:
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// - Relies on the existing expectation that higher-level mutation routing
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// serializes Apply() calls per grain; if stricter guarantees are needed,
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// a delivery-level lock could be introduced later.
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//
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// Future Extensions:
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// - Validate pickup point fields (country code, zip format, etc.)
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// - Track history / audit of pickup point changes
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// - Trigger delivery price adjustments (which would then require WithTotals()).
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func HandleSetPickupPoint(g *CheckoutGrain, m *messages.SetPickupPoint) error {
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if m == nil {
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return fmt.Errorf("SetPickupPoint: nil payload")
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}
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for _, d := range g.Deliveries {
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if d.Id == uint32(m.DeliveryId) {
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d.PickupPoint = asPickupPoint(m.PickupPoint, d.Id)
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return nil
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}
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}
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return fmt.Errorf("SetPickupPoint: delivery id %d not found", m.DeliveryId)
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}
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