fix requirements.txt, dates, news sample

requirements.txt

@@ -5,4 +5,5 @@ uvicorn[standard]==0.24.0
 httpx>=0.25.0
 python-dotenv==1.0.0
 pydantic==2.5.0
-typing-extensions==4.8.0
+typing-extensions==4.8.0
+pytz==2025.2

src/telegram_bot/telegram_bot_service.py

@@ -1,9 +1,11 @@
 from typing import Any
 from datetime import datetime, timedelta
 import time
+import random
 
 import httpx
 from fastapi import HTTPException
+from pytz import timezone
 
 from src.telegram_bot.logger import main_logger
 from src.telegram_bot.config import Config
@@ -212,13 +214,19 @@ class TelegramBotService:
     ) -> None:
         await self.send_message_via_proxy(chat_id, f"Fetching latest financial news for ticker {ticker} ...")
         try:
-            current_date = datetime.now() - timedelta(days=1)
+            eastern = timezone("US/Eastern")
+            now_eastern = datetime.now(eastern)
+            if now_eastern.hour < 9 or (now_eastern.hour == 9 and now_eastern.minute < 30) or now_eastern.hour >= 16:
+                # Before 9:30 AM or after 4:00 PM Eastern, use yesterday
+                current_date = (now_eastern - timedelta(days=1)).replace(hour=0, minute=0, second=0, microsecond=0)
+            else:
+                current_date = now_eastern.replace(hour=0, minute=0, second=0, microsecond=0)
             feed = fetch_comp_financial_news(ticker=ticker,
                                              date_from=current_date.strftime('%Y-%m-%d'),
                                              date_to=current_date.strftime('%Y-%m-%d'))
             main_logger.info(f"Processed: {len(feed)} news items for ticker {ticker}")
             client = OpenRouterClient(api_key=Config.OPENROUTER_API_KEY)
-            sample_news = feed[:5]  # Limit to first 5 news items for processing
+            sample_news = random.sample(feed, min(5, len(feed)))  # Select up to 5 random news items for processing
             for news in sample_news:
                 start_time = time.perf_counter()
                 prompt = PromptGenerator.format_prompt(news)