41 lines
903 B
Go
41 lines
903 B
Go
package ws
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import (
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"encoding/json"
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"log"
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)
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type EventType string
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const (
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DeliveryCreated EventType = "delivery.created"
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DeliveryUpdated EventType = "delivery.updated"
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DeliveryStatusChanged EventType = "delivery.status_changed"
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DeliveryDeleted EventType = "delivery.deleted"
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)
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type Event struct {
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Type EventType `json:"type"`
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Payload any `json:"payload"`
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}
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type StatusPayload struct {
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ID string `json:"id"`
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Status string `json:"status"`
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}
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type DeletePayload struct {
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ID string `json:"id"`
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}
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// NewEvent serializes an event to JSON. Returns nil on marshal failure;
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// callers should treat nil as "skip broadcast".
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func NewEvent(eventType EventType, payload any) []byte {
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data, err := json.Marshal(Event{Type: eventType, Payload: payload})
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if err != nil {
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log.Printf("ws: failed to marshal event %s: %v", eventType, err)
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return nil
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}
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return data
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}
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