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feat: Add Telegram voice message receiving support #1948

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feat: Add Telegram voice message receiving support #1948

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27dd98e
Initial plan
Copilot Jan 30, 2026
a2ffc15
feat: add Telegram voice message receiving support
Copilot Jan 30, 2026
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22 changes: 21 additions & 1 deletion src/langbot/pkg/platform/sources/telegram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,26 @@ def parse_message_text(text: str) -> list[platform_message.MessageComponent]:
)
)

if message.voice:
if message.caption:
message_components.extend(parse_message_text(message.caption))

file = await message.voice.get_file()

file_bytes = None
file_format = message.voice.mime_type or 'audio/ogg'

async with aiohttp.ClientSession(trust_env=True) as session:
async with session.get(file.file_path) as response:
file_bytes = await response.read()

message_components.append(
platform_message.Voice(
base64=f'data:{file_format};base64,{base64.b64encode(file_bytes).decode("utf-8")}',
length=message.voice.duration,
)
)

return platform_message.MessageChain(message_components)


Expand Down Expand Up @@ -159,7 +179,7 @@ async def telegram_callback(update: Update, context: ContextTypes.DEFAULT_TYPE):

application = ApplicationBuilder().token(config['token']).build()
bot = application.bot
application.add_handler(MessageHandler(filters.TEXT | (filters.COMMAND) | filters.PHOTO, telegram_callback))
application.add_handler(MessageHandler(filters.TEXT | (filters.COMMAND) | filters.PHOTO | filters.VOICE, telegram_callback))
super().__init__(
config=config,
logger=logger,
Expand Down
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