45 lines
1,022 B
Go
45 lines
1,022 B
Go
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package postgresql
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import (
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"context"
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"fmt"
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"github.com/fiatjaf/eventstore"
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"github.com/fiatjaf/eventstore/internal"
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"github.com/nbd-wtf/go-nostr"
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)
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func (b *PostgresBackend) ReplaceEvent(ctx context.Context, evt *nostr.Event) error {
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b.Lock()
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defer b.Unlock()
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filter := nostr.Filter{Limit: 1, Kinds: []int{evt.Kind}, Authors: []string{evt.PubKey}}
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if nostr.IsAddressableKind(evt.Kind) {
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filter.Tags = nostr.TagMap{"d": []string{evt.Tags.GetD()}}
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}
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ch, err := b.QueryEvents(ctx, filter)
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if err != nil {
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return fmt.Errorf("failed to query before replacing: %w", err)
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}
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shouldStore := true
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for previous := range ch {
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if internal.IsOlder(previous, evt) {
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if err := b.DeleteEvent(ctx, previous); err != nil {
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return fmt.Errorf("failed to delete event for replacing: %w", err)
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}
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} else {
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shouldStore = false
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}
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}
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if shouldStore {
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if err := b.SaveEvent(ctx, evt); err != nil && err != eventstore.ErrDupEvent {
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return fmt.Errorf("failed to save: %w", err)
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}
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}
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return nil
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}
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