Initial commit: Discord stock bot with hourly PYPL updates

Functional Discord bot with automated hourly stock price updates during NYSE trading hours. Supports manual queries for any ticker via prefix commands.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

market_hours.py

@@ -0,0 +1,121 @@
+from datetime import datetime, time
+import pytz
+import logging
+
+
+logger = logging.getLogger(__name__)
+
+
+class MarketHours:
+    """
+    Utility class for determining NYSE market hours.
+    Market is open 9:30 AM - 4:00 PM ET, Monday-Friday (excluding holidays).
+    """
+
+    NYSE_TIMEZONE = pytz.timezone('America/New_York')
+    MARKET_OPEN = time(9, 30)
+    MARKET_CLOSE = time(16, 0)
+
+    # Major NYSE holidays (this is a simplified list - production systems would use a holiday calendar API)
+    HOLIDAYS_2024 = [
+        datetime(2024, 1, 1),   # New Year's Day
+        datetime(2024, 1, 15),  # MLK Day
+        datetime(2024, 2, 19),  # Presidents Day
+        datetime(2024, 3, 29),  # Good Friday
+        datetime(2024, 5, 27),  # Memorial Day
+        datetime(2024, 6, 19),  # Juneteenth
+        datetime(2024, 7, 4),   # Independence Day
+        datetime(2024, 9, 2),   # Labor Day
+        datetime(2024, 11, 28), # Thanksgiving
+        datetime(2024, 12, 25), # Christmas
+    ]
+
+    HOLIDAYS_2025 = [
+        datetime(2025, 1, 1),   # New Year's Day
+        datetime(2025, 1, 20),  # MLK Day
+        datetime(2025, 2, 17),  # Presidents Day
+        datetime(2025, 4, 18),  # Good Friday
+        datetime(2025, 5, 26),  # Memorial Day
+        datetime(2025, 6, 19),  # Juneteenth
+        datetime(2025, 7, 4),   # Independence Day
+        datetime(2025, 9, 1),   # Labor Day
+        datetime(2025, 11, 27), # Thanksgiving
+        datetime(2025, 12, 25), # Christmas
+    ]
+
+    @classmethod
+    def is_market_open(cls, check_time: datetime = None) -> bool:
+        """
+        Determine if the NYSE is currently open.
+
+        Args:
+            check_time: Datetime to check (defaults to now)
+
+        Returns:
+            True if market is open, False otherwise
+        """
+        if check_time is None:
+            check_time = datetime.now(cls.NYSE_TIMEZONE)
+        else:
+            check_time = check_time.astimezone(cls.NYSE_TIMEZONE)
+
+        # Check if weekend
+        if check_time.weekday() >= 5:  # Saturday = 5, Sunday = 6
+            logger.debug("Market closed: Weekend")
+            return False
+
+        # Check if holiday
+        check_date = check_time.date()
+        all_holidays = cls.HOLIDAYS_2024 + cls.HOLIDAYS_2025
+        if any(holiday.date() == check_date for holiday in all_holidays):
+            logger.debug(f"Market closed: Holiday ({check_date})")
+            return False
+
+        # Check if within market hours
+        current_time = check_time.time()
+        if cls.MARKET_OPEN <= current_time < cls.MARKET_CLOSE:
+            return True
+        else:
+            logger.debug(f"Market closed: Outside trading hours ({current_time})")
+            return False
+
+    @classmethod
+    def get_next_market_open(cls, from_time: datetime = None) -> datetime:
+        """
+        Calculate the next time the market will open.
+
+        Args:
+            from_time: Starting datetime (defaults to now)
+
+        Returns:
+            Datetime of next market open
+        """
+        if from_time is None:
+            from_time = datetime.now(cls.NYSE_TIMEZONE)
+        else:
+            from_time = from_time.astimezone(cls.NYSE_TIMEZONE)
+
+        # Start checking from the next day at market open
+        next_day = from_time.replace(hour=cls.MARKET_OPEN.hour,
+                                       minute=cls.MARKET_OPEN.minute,
+                                       second=0,
+                                       microsecond=0)
+
+        # If we have not passed today's open time, check today first
+        if from_time.time() < cls.MARKET_OPEN:
+            next_day = next_day
+        else:
+            # Otherwise start from tomorrow
+            next_day = next_day.replace(day=next_day.day + 1)
+
+        # Find the next valid market day
+        max_iterations = 14  # Search up to 2 weeks ahead
+        for _ in range(max_iterations):
+            if cls.is_market_open(next_day):
+                return next_day
+            # Move to next day
+            next_day = next_day.replace(day=next_day.day + 1)
+
+        # Fallback (should not reach here under normal circumstances)
+        logger.warning("Could not determine next market open within 2 weeks")
+        return next_day