import asyncio
from datetime import datetime
import aiosqlite
from .database import DATABASE

async def reminder_worker(client):
    while True:
        await asyncio.sleep(60)  # check every minute
        now = datetime.now()
        async with aiosqlite.connect(DATABASE) as db:
            cursor = await db.execute(
                "SELECT id, description, reminder_time, notification_channel_id FROM tasks WHERE reminder_time <= ? AND reminder_sent = FALSE", 
                (now,)
            )
            tasks = await cursor.fetchall()
            for task_id, description, reminder_time, channel_id in tasks:
                if channel_id:
                    channel = client.get_channel(int(channel_id))
                    if channel:
                        await channel.send(f"Reminder for task: {description}")
                        await db.execute("UPDATE tasks SET reminder_sent = TRUE WHERE id = ?", (task_id,))
                    else:
                        print(f"Failed to find channel with ID {channel_id}")
                else:
                    print(f"No channel ID provided for task ID {task_id}")
            await db.commit()