fiatjaf
87 lines
1.9 KiB
Go
87 lines
1.9 KiB
Go
package nip29
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import (
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"fmt"
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"github.com/nbd-wtf/go-nostr"
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)
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type Group struct {
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ID string
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Name string
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Picture string
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About string
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Members map[string]*Role
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Private bool
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Closed bool
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LastMetadataUpdate nostr.Timestamp
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}
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func (group Group) ToMetadataEvent() *nostr.Event {
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evt := &nostr.Event{
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Kind: 39000,
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CreatedAt: group.LastMetadataUpdate,
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Content: group.About,
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Tags: nostr.Tags{
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nostr.Tag{"d", group.ID},
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},
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}
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if group.Name != "" {
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evt.Tags = append(evt.Tags, nostr.Tag{"name", group.Name})
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}
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if group.About != "" {
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evt.Tags = append(evt.Tags, nostr.Tag{"about", group.Name})
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}
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if group.Picture != "" {
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evt.Tags = append(evt.Tags, nostr.Tag{"picture", group.Picture})
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}
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// status
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if group.Private {
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evt.Tags = append(evt.Tags, nostr.Tag{"private"})
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} else {
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evt.Tags = append(evt.Tags, nostr.Tag{"public"})
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}
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if group.Closed {
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evt.Tags = append(evt.Tags, nostr.Tag{"closed"})
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} else {
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evt.Tags = append(evt.Tags, nostr.Tag{"open"})
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}
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return evt
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}
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func (group *Group) MergeInMetadataEvent(evt *nostr.Event) error {
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if evt.Kind != nostr.KindSimpleGroupMetadata {
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return fmt.Errorf("expected kind %d, got %d", nostr.KindSimpleGroupMetadata, evt.Kind)
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}
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if evt.CreatedAt <= group.LastMetadataUpdate {
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return fmt.Errorf("event is older than our last update (%d vs %d)", evt.CreatedAt, group.LastMetadataUpdate)
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}
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group.LastMetadataUpdate = evt.CreatedAt
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group.ID = evt.Tags.GetD()
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group.Name = group.ID
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if tag := evt.Tags.GetFirst([]string{"name", ""}); tag != nil {
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group.Name = (*tag)[1]
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}
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if tag := evt.Tags.GetFirst([]string{"about", ""}); tag != nil {
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group.About = (*tag)[1]
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}
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if tag := evt.Tags.GetFirst([]string{"picture", ""}); tag != nil {
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group.Picture = (*tag)[1]
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}
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if tag := evt.Tags.GetFirst([]string{"private"}); tag != nil {
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group.Private = true
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}
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if tag := evt.Tags.GetFirst([]string{"closed"}); tag != nil {
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group.Closed = true
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}
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return nil
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}
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