emoji signaling

vendor/gitlab.com/etke.cc/linkpearl/events.go

@@ -0,0 +1,73 @@
+package linkpearl
+
+import (
+	"strconv"
+
+	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/id"
+)
+
+// RespThreads is response of https://spec.matrix.org/v1.8/client-server-api/#get_matrixclientv1roomsroomidthreads
+type RespThreads struct {
+	Chunk     []*event.Event `json:"chunk"`
+	NextBatch string         `json:"next_batch"`
+}
+
+// Threads endpoint, ref: https://spec.matrix.org/v1.8/client-server-api/#get_matrixclientv1roomsroomidthreads
+func (l *Linkpearl) Threads(roomID id.RoomID, fromToken ...string) (*RespThreads, error) {
+	var from string
+	if len(fromToken) > 0 {
+		from = fromToken[0]
+	}
+
+	query := map[string]string{
+		"from":  from,
+		"limit": strconv.Itoa(l.eventsLimit),
+	}
+
+	var resp *RespThreads
+	urlPath := l.GetClient().BuildURLWithQuery(mautrix.ClientURLPath{"v1", "rooms", roomID, "threads"}, query)
+	_, err := l.GetClient().MakeRequest("GET", urlPath, nil, &resp)
+	return resp, UnwrapError(err)
+}
+
+// FindEventBy tries to find event by field and value
+func (l *Linkpearl) FindEventBy(roomID id.RoomID, field, value string, fromToken ...string) *event.Event {
+	var from string
+	if len(fromToken) > 0 {
+		from = fromToken[0]
+	}
+
+	resp, err := l.GetClient().Messages(roomID, from, "", mautrix.DirectionBackward, nil, l.eventsLimit)
+	err = UnwrapError(err)
+	if err != nil {
+		l.log.Warn().Err(err).Str("roomID", roomID.String()).Msg("cannot get room events")
+		return nil
+	}
+
+	for _, msg := range resp.Chunk {
+		evt, contains := l.eventContains(msg, field, value)
+		if contains {
+			return evt
+		}
+	}
+
+	if resp.End == "" { // nothing more
+		return nil
+	}
+
+	return l.FindEventBy(roomID, field, value, resp.End)
+}
+
+func (l *Linkpearl) eventContains(evt *event.Event, field, value string) (*event.Event, bool) {
+	if evt.Type == event.EventEncrypted {
+		ParseContent(evt, &l.log)
+		decrypted, err := l.GetClient().Crypto.Decrypt(evt)
+		if err == nil {
+			evt = decrypted
+		}
+	}
+
+	return evt, EventContains(evt, field, value)
+}