49 lines
1.9 KiB
Python
49 lines
1.9 KiB
Python
import asyncio
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from telethon import TelegramClient
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from datetime import datetime, timedelta, timezone
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import os
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def get_api_credentials():
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api_id = int(os.getenv("TELEGRAM_API_ID", ""))
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api_hash = os.getenv("TELEGRAM_API_HASH", "")
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session_name = os.getenv("TELEGRAM_SESSION_NAME", "")
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return api_id, api_hash, session_name
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async def _get_channel_history_async(start_date_str, end_date_str):
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"""
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The internal async logic that does the actual work.
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"""
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username = "WatcherGuru"
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api_id, api_hash, session_name = get_api_credentials()
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# 1. Start the client using 'async with'
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# This automatically handles connecting AND disconnecting (releasing the DB lock)
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async with TelegramClient(session_name, api_id, api_hash) as client:
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# Date parsing logic
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start_date = datetime.strptime(start_date_str, '%Y-%m-%d').replace(tzinfo=timezone.utc)
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end_date_obj = datetime.strptime(end_date_str, '%Y-%m-%d').replace(tzinfo=timezone.utc)
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end_date = end_date_obj + timedelta(days=1) - timedelta(seconds=1)
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formatted_log = ""
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# Fetching messages
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n_records = 0
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async for message in client.iter_messages(username, offset_date=end_date, reverse=False):
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if message.date < start_date:
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break
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if message.text:
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date_str = message.date.strftime('%Y-%m-%d')
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clean_text = message.text.replace('\n', ' ')
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formatted_log += f"[{date_str}] {clean_text}\n"
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n_records += 1
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intro = f"# News data from Telegram channel @{username} from {start_date_str} to {end_date_str}:\n# Total records: {n_records}\n# Data retrieved on: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n"
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return intro + formatted_log
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def get_crypto_news_telegram(symbol, start_date, end_date):
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return asyncio.run(_get_channel_history_async(start_date, end_date)) |