DISCORD.PY Creating an end Giveaway Command - function

Question

I am working on a giveaway bot and after doing the start and reroll command I have run into the end command , which i cannot fully grasp how to do it. I thought to register something when the giveaway is created (msgID of the giveaway im registering) in my aiosqlite database and for the end function , i could be able to fetch it and stop the giveaway. Now here is the thing, i cant think of a function or a task that will end the giveaway or somehow just end the duration.
For reference here is my start command :
class Start(commands.Cog):
def __init__(self, client):
self.client = client
def convert(self, timer):
pos = ["s", "m", "h", "d"]
time_dict = {"s" : 1, "m" : 60, "h" : 3600, "d" : 3600*24}
unit = timer[-1]
if unit not in pos:
return -1
try:
val = int(timer[:-1])
except:
return -2
return val * time_dict[unit]
#commands.command()
async def start(self, ctx, duration, winners: str, *, prize):
timer = (self.convert(duration))
winners = int(winners.replace("w",""))
await ctx.message.delete()
timestamp = time.time() + timer
epoch_time = int((time.time() + timer))
embed = discord.Embed(title = f"{prize}", description = f'React with 🎉 to enter\nEnds: <t:{epoch_time}:R> (<t:{epoch_time}>)\nHosted by {ctx.author.mention}\n', color =
ctx.author.color, timestamp=(datetime.datetime.utcfromtimestamp(timestamp)))
embed.set_footer(text=f'Winners : {winners} | Ends at \u200b')
gaw_msg = await ctx.send(content = "<:spadess:939938117736091678> **GIVEAWAY** <:spadess:939938117736091678>",embed=embed)
await gaw_msg.add_reaction("🎉")
db = await aiosqlite.connect("main.db")
cursor = await db.cursor()
await cursor.execute(f'SELECT * FROM storingStuff WHERE msgID = {gaw_msg.id}')
data = await cursor.fetchone()
if data is None:
await cursor.execute(f'INSERT INTO storingStuff (msgID, guildID) VALUES({gaw_msg.guild.id} , {gaw_msg.id})')
await db.commit()
await cursor.close()
await db.close()
await asyncio.sleep(timer)
new_msg = await ctx.channel.fetch_message(gaw_msg.id)
users_mention = []
for i in range(winners):
users = await new_msg.reactions[0].users().flatten()
users.pop(users.index(self.client.user))
winner = random.choice(users)
users_mention.append(winner.mention)
users.remove(winner)
displayed_winners = ",".join(users_mention)
endembed = discord.Embed(title=f"{prize}", description=f"Winner: {displayed_winners}\nHosted by: {ctx.author.mention}", color = ctx.author.color, timestamp=(datetime.datetime.utcfromtimestamp(timestamp)))
endembed.set_footer(text= 'Ended at \u200b')
await gaw_msg.edit(content = "<:done:939940228746072096> **GIVEAWAY ENDED** <:done:939940228746072096>",embed=endembed)
await ctx.send(f"Congragulations {displayed_winners}! You won the **{prize}**.\n{gaw_msg.jump_url}")
def setup(client):
client.add_cog(Start(client))
Any help with the case would be appreciated , or any code reference as I'm pretty new. Thank you for spending your time and reading this.