feat(tg): support channel comment link

pkg/utils/telegram.go

@@ -7,6 +7,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/go-faster/errors"
 	"github.com/gotd/td/telegram/peers"
 	"github.com/gotd/td/telegram/query"
 	"github.com/gotd/td/tg"
@@ -18,58 +19,77 @@ var Telegram telegram
 
 // ParseMessageLink return dialog id, msg id, error
 func (t telegram) ParseMessageLink(ctx context.Context, manager *peers.Manager, s string) (peers.Peer, int, error) {
+	parse := func(from, msg string) (peers.Peer, int, error) {
+		ch, err := t.GetInputPeer(ctx, manager, from)
+		if err != nil {
+			return nil, 0, errors.Wrap(err, "input peer")
+		}
+
+		m, err := strconv.Atoi(msg)
+		if err != nil {
+			return nil, 0, errors.Wrap(err, "parse message id")
+		}
+
+		return ch, m, nil
+	}
+
 	u, err := url.Parse(s)
 	if err != nil {
 		return nil, 0, err
 	}
 
 	paths := strings.Split(strings.TrimPrefix(u.Path, "/"), "/")
 
-	from, msg := "", ""
+	// https://t.me/opencfdchannel/4434?comment=360409
+	if c := u.Query().Get("comment"); c != "" {
+		peer, err := t.GetInputPeer(ctx, manager, paths[0])
+		if err != nil {
+			return nil, 0, errors.Wrap(err, "input peer")
+		}
+
+		ch, ok := peer.(peers.Channel)
+		if !ok || !ch.IsBroadcast() {
+			return nil, 0, errors.New("not channel")
+		}
+
+		raw, err := ch.FullRaw(ctx)
+		if err != nil {
+			return nil, 0, errors.Wrap(err, "full raw")
+		}
+
+		linked, ok := raw.GetLinkedChatID()
+		if !ok {
+			return nil, 0, errors.New("no linked chat")
+		}
+
+		return parse(strconv.FormatInt(linked, 10), c)
+	}
+
 	switch len(paths) {
 	case 2:
 		// https://t.me/telegram/193
-
-		from = paths[0]
-		msg = paths[1]
+		// https://t.me/myhostloc/1485524?thread=1485523
+		return parse(paths[0], paths[1])
 	case 3:
 		// https://t.me/c/1697797156/151
 		// https://t.me/iFreeKnow/45662/55005
-
 		if paths[0] == "c" {
-			from = paths[1]
-			msg = paths[2]
-			break
+			return parse(paths[1], paths[2])
 		}
 
 		// "45662" means topic id, we don't need it
-		from = paths[0]
-		msg = paths[2]
+		return parse(paths[0], paths[2])
 	case 4:
 		// https://t.me/c/1492447836/251015/251021
-
 		if paths[0] != "c" {
 			return nil, 0, fmt.Errorf("invalid message link")
 		}
 
 		// "251015" means topic id, we don't need it
-		from = paths[1]
-		msg = paths[3]
+		return parse(paths[1], paths[3])
 	default:
 		return nil, 0, fmt.Errorf("invalid message link: %s", s)
 	}
-
-	ch, err := t.GetInputPeer(ctx, manager, from)
-	if err != nil {
-		return nil, 0, err
-	}
-
-	msgid, err := strconv.Atoi(msg)
-	if err != nil {
-		return nil, 0, err
-	}
-
-	return ch, msgid, nil
 }
 
 func (t telegram) GetInputPeer(ctx context.Context, manager *peers.Manager, from string) (peers.Peer, error) {