46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
package postgresql
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import (
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"encoding/json"
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"fmt"
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"strings"
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"time"
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"github.com/fiatjaf/go-nostr"
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)
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func (b *PostgresBackend) SaveEvent(evt *nostr.Event) error {
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// react to different kinds of events
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if evt.Kind == nostr.KindSetMetadata || evt.Kind == nostr.KindContactList || (10000 <= evt.Kind && evt.Kind < 20000) {
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// delete past events from this user
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b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2`, evt.PubKey, evt.Kind)
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} else if evt.Kind == nostr.KindRecommendServer {
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// delete past recommend_server events equal to this one
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b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND content = $3`,
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evt.PubKey, evt.Kind, evt.Content)
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}
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// insert
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tagsj, _ := json.Marshal(evt.Tags)
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_, err := b.DB.Exec(`
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INSERT INTO event (id, pubkey, created_at, kind, tags, content, sig)
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VALUES ($1, $2, $3, $4, $5, $6, $7)
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`, evt.ID, evt.PubKey, evt.CreatedAt.Unix(), evt.Kind, tagsj, evt.Content, evt.Sig)
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if err != nil {
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if strings.Index(err.Error(), "UNIQUE") != -1 {
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// already exists
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return nil
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}
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return fmt.Errorf("failed to save event %s: %w", evt.ID, err)
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}
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// delete ephemeral events after a minute
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go func() {
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time.Sleep(75 * time.Second)
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b.DB.Exec("DELETE FROM event WHERE id = $1", evt.ID)
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}()
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return nil
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}
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