45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
package sqlite3
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import (
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"context"
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"encoding/json"
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"github.com/fiatjaf/khatru"
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"github.com/nbd-wtf/go-nostr"
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)
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func (b *SQLite3Backend) SaveEvent(ctx context.Context, evt *nostr.Event) error {
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// insert
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tagsj, _ := json.Marshal(evt.Tags)
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res, err := b.DB.ExecContext(ctx, `
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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, evt.Kind, tagsj, evt.Content, evt.Sig)
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if err != nil {
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return err
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}
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nr, err := res.RowsAffected()
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if err != nil {
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return err
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}
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if nr == 0 {
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return khatru.ErrDupEvent
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}
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return nil
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}
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func (b *SQLite3Backend) BeforeSave(ctx context.Context, evt *nostr.Event) {
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// do nothing
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}
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func (b *SQLite3Backend) AfterSave(evt *nostr.Event) {
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// delete all but the 100 most recent ones for each key
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b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND created_at < (
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SELECT created_at FROM event WHERE pubkey = $1
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ORDER BY created_at DESC OFFSET 100 LIMIT 1
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)`, evt.PubKey, evt.Kind)
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}
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