From 69a3ed6f4ed7f7963582a70fdd96797e81a241c6 Mon Sep 17 00:00:00 2001
From: krau <71133316+krau@users.noreply.github.com>
Date: Mon, 7 Jul 2025 13:48:16 +0800
Subject: [PATCH] fix: parse chat ID correctly in Save method for Telegram
 storage

---
 storage/telegram/telegram.go | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/storage/telegram/telegram.go b/storage/telegram/telegram.go
index 09ee55f..de4a5d8 100644
--- a/storage/telegram/telegram.go
+++ b/storage/telegram/telegram.go
@@ -5,8 +5,11 @@ import (
 	"fmt"
 	"io"
 	"path"
+	"strconv"
+	"strings"
 	"time"
 
+	"github.com/duke-git/lancet/v2/convertor"
 	"github.com/gabriel-vasile/mimetype"
 	"github.com/gotd/td/telegram/message"
 	"github.com/gotd/td/telegram/message/styling"
@@ -70,9 +73,17 @@ func (t *Telegram) Save(ctx context.Context, r io.Reader, storagePath string) er
 	if tctx == nil {
 		return fmt.Errorf("failed to get telegram context")
 	}
-	peer := tctx.PeerStorage.GetInputPeerById(t.config.ChatID)
+	chatID := t.config.ChatID
+	if after, ok0 := strings.CutPrefix(convertor.ToString(chatID), "-100"); ok0 {
+		cid, err := strconv.ParseInt(after, 10, 64)
+		if err != nil {
+			return fmt.Errorf("failed to parse chat ID: %w", err)
+		}
+		chatID = cid
+	}
+	peer := tctx.PeerStorage.GetInputPeerById(chatID)
 	if peer == nil {
-		return fmt.Errorf("failed to get input peer for chat ID %d", t.config.ChatID)
+		return fmt.Errorf("failed to get input peer for chat ID %d", chatID)
 	}
 	mtype, err := mimetype.DetectReader(rs)
 	if err != nil {