При реакции на сообщение в Telegram, дублируется сообщение в Discord

main.go

@@ -5,8 +5,15 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"sync"
 )
 
+type telegramMessageCacheItem struct {
+	Text   string
+	Sender string
+	Media  []string
+}
+
 func main() {
 	log.Println("Go Chat Bridge запущен.")
 
@@ -25,10 +32,38 @@ func main() {
 	log.Println("Bridge успешно инициализирован:", bridge)
 
 	// Получаем ID чатов/каналов из переменных окружения
-	telegramChatID := os.Getenv("TELEGRAM_CHAT_ID")     // int64
-	discordChannelID := os.Getenv("DISCORD_CHANNEL_ID") // string
+	telegramChatID := strings.TrimSpace(os.Getenv("TELEGRAM_CHAT_ID"))                      // int64
+	discordChannelID := strings.TrimSpace(os.Getenv("DISCORD_CHANNEL_ID"))                  // string
+	discordReactionChannelID := strings.TrimSpace(os.Getenv("DISCORD_REACTION_CHANNEL_ID")) // string
+	telegramDuplicateReactionEmoji := strings.TrimSpace(os.Getenv("TELEGRAM_DUPLICATE_REACTION"))
+	if telegramDuplicateReactionEmoji == "" {
+		telegramDuplicateReactionEmoji = "✍️"
+	}
+	normalizedDuplicateReaction := normalizeEmoji(telegramDuplicateReactionEmoji)
 
-	forward := func(text string, from string, sender string, media []string) {
+	messageCache := make(map[string]telegramMessageCacheItem)
+	var cacheMu sync.RWMutex
+
+	cacheKey := func(chatID int64, messageID int) string {
+		return strconv.FormatInt(chatID, 10) + ":" + strconv.Itoa(messageID)
+	}
+
+	sendTelegramMessageToDiscord := func(channelID, sender, text, msg string, media []string) error {
+		if channelID == "" {
+			return nil
+		}
+		if len(media) > 0 {
+			files, derr := bridge.DownloadFiles(media)
+			if derr == nil && len(files) > 0 {
+				err := bridge.SendFilesToDiscord(channelID, files, "[TG] "+sender+": "+text)
+				bridge.CleanupFiles(files)
+				return err
+			}
+		}
+		return bridge.SendToDiscord(channelID, "[TG] "+sender+": "+msg)
+	}
+
+	forward := func(text string, from string, sender string, media []string, messageID int, sourceChatID int64) {
 		// Собираем итоговый текст с медиа URL, если есть
 		msg := text
 		if len(media) > 0 {
@@ -42,19 +77,16 @@ func main() {
 		switch from {
 		case "telegram":
 			// Для Discord отправляем файлы, если есть, иначе текст
-			if discordChannelID != "" {
-				if len(media) > 0 {
-					files, derr := bridge.DownloadFiles(media)
-					if derr == nil && len(files) > 0 {
-						_ = bridge.SendFilesToDiscord(discordChannelID, files, "[TG] "+sender+": "+text)
-						bridge.CleanupFiles(files)
-					} else {
-						_ = bridge.SendToDiscord(discordChannelID, "[TG] "+sender+": "+msg)
-					}
-				} else {
-					_ = bridge.SendToDiscord(discordChannelID, "[TG] "+sender+": "+msg)
-				}
+			if err := sendTelegramMessageToDiscord(discordChannelID, sender, text, msg, media); err != nil {
+				log.Printf("[Bridge] failed to send telegram message to main Discord channel: %v", err)
 			}
+			cacheMu.Lock()
+			messageCache[cacheKey(sourceChatID, messageID)] = telegramMessageCacheItem{
+				Text:   text,
+				Sender: sender,
+				Media:  append([]string(nil), media...),
+			}
+			cacheMu.Unlock()
 		case "discord":
 			// Для Telegram отправляем файлы, если есть, иначе текст
 			if telegramChatID != "" {
@@ -75,9 +107,66 @@ func main() {
 		}
 	}
 
-	bridge.StartTelegramListener(func(text string, sender string, media []string) { forward(text, "telegram", sender, media) })
-	bridge.StartDiscordListener(discordChannelID, func(text string, sender string, media []string) { forward(text, "discord", sender, media) })
+	bridge.StartTelegramListener(
+		func(text string, sender string, media []string, messageID int, chatID int64) {
+			forward(text, "telegram", sender, media, messageID, chatID)
+		},
+		func(chatID int64, messageID int, reaction string) {
+			if discordChannelID != "" {
+				_ = bridge.SendToDiscord(discordChannelID, "реакция поставлена")
+			}
+
+			if discordReactionChannelID == "" {
+				log.Printf("[Bridge] reaction duplicate skipped: DISCORD_REACTION_CHANNEL_ID is empty")
+				return
+			}
+			normalizedReaction := normalizeEmoji(reaction)
+			if normalizedReaction != normalizedDuplicateReaction {
+				log.Printf("[Bridge] reaction %q does not match configured %q", reaction, telegramDuplicateReactionEmoji)
+				return
+			}
+
+			cacheMu.RLock()
+			item, exists := messageCache[cacheKey(chatID, messageID)]
+			cacheMu.RUnlock()
+			if !exists {
+				log.Printf("[Telegram] reaction %q for message %d in chat %d ignored: original message not in cache", reaction, messageID, chatID)
+				return
+			}
+
+			msg := item.Text
+			if len(item.Media) > 0 {
+				if msg != "" {
+					msg += "\n"
+				}
+				msg += strings.Join(item.Media, "\n")
+			}
+			if err := sendTelegramMessageToDiscord(discordReactionChannelID, item.Sender, item.Text, msg, item.Media); err != nil {
+				log.Printf("[Bridge] failed to send duplicated message to reaction Discord channel: %v", err)
+				return
+			}
+			log.Printf("[Bridge] duplicated message %d from chat %d to reaction channel by reaction %q", messageID, chatID, reaction)
+		},
+	)
+	bridge.StartDiscordListener(discordChannelID, func(text string, sender string, media []string) {
+		forward(text, "discord", sender, media, 0, 0)
+	})
 
 	log.Println("Chat Bridge запущен и работает")
 	select {} // Бесконечный цикл для поддержания работы программы
 }
+
+func normalizeEmoji(value string) string {
+	trimmed := strings.TrimSpace(value)
+	filtered := strings.Map(func(r rune) rune {
+		// Variation selectors and skin tone modifiers are optional in user input/reaction payloads.
+		if r == '\uFE0E' || r == '\uFE0F' {
+			return -1
+		}
+		if r >= '\U0001F3FB' && r <= '\U0001F3FF' {
+			return -1
+		}
+		return r
+	}, trimmed)
+	return filtered
+}