парсер

tg_parser/internal/adapter/telegram/resolve.go

@@ -0,0 +1,59 @@
+package telegram
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/TelegramExchange/tgex-parser/internal/domain"
+	"github.com/google/uuid"
+	"github.com/gotd/td/tg"
+)
+
+func (t *Telegram) ParseChannelMeta(ctx context.Context, username string) (domain.Channel, error) {
+	resolved, err := t.API().ContactsResolveUsername(ctx, &tg.ContactsResolveUsernameRequest{
+		Username: username,
+	})
+	if err != nil {
+		return domain.Channel{}, fmt.Errorf("resolve username: %w", err)
+	}
+
+	if len(resolved.Chats) == 0 {
+		return domain.Channel{}, fmt.Errorf("no chats in resolve result")
+	}
+
+	ch, ok := resolved.Chats[0].(*tg.Channel)
+	if !ok {
+		return domain.Channel{}, fmt.Errorf("not a channel")
+	}
+
+	req := []tg.InputDialogPeerClass{
+		&tg.InputDialogPeer{
+			Peer: &tg.InputPeerChannel{
+				ChannelID:  ch.ID,
+				AccessHash: ch.AccessHash,
+			},
+		},
+	}
+
+	dialogs, err := t.API().MessagesGetPeerDialogs(ctx, req)
+	if err != nil {
+		return domain.Channel{}, fmt.Errorf("peer dialogs: %w", err)
+	}
+
+	pts := 0
+	if len(dialogs.Dialogs) > 0 {
+		d, ok := dialogs.Dialogs[0].(*tg.Dialog)
+		if ok {
+			pts = d.Pts
+		}
+	}
+
+	return domain.Channel{
+		ID:         uuid.New(),
+		TelegramID: domain.ChatIDFromChannelID(ch.ID),
+		Username:   username,
+		Title:      ch.Title,
+		AccessHash: ch.AccessHash,
+		Pts:        pts,
+	}, nil
+}