Giveaways bot with MySQL DB (2)

import discord
from discord.ext import commands, tasks
from discord import app_commands
import mysql.connector
import datetime
import random

intents = discord.Intents.default()
intents.members = True
client = commands.Bot(command_prefix="-", intents=intents)
tree = client.tree

db = mysql.connector.connect(
    host="localhost",
    user="root",
    password="",
    database="giveaways"
)
cursor = db.cursor(dictionary=True)

@client.event
async def on_ready():
    synced = await client.tree.sync()
    print(f"Synced {len(synced)} command(s).")
    checkGiveaways.start()

@tasks.loop(seconds=10)
async def checkGiveaways():
    cursor.execute("SELECT * FROM giveaways")
    giveaways = cursor.fetchall()
    for row in giveaways:
        if float(row['end']) - float(datetime.datetime.utcnow().timestamp()) <= 0:
            try:
                channel = await client.fetch_channel(int(row['channel']))
                message = await channel.fetch_message(int(row['message']))
                host = await client.fetch_user(int(row['host']))
                joins = []
                for reaction in message.reactions:
                    if str(reaction.emoji) == "🎉":
                        users = reaction.users()
                        async for user in users:
                            if not user.id == client.user.id:
                                joins.append(user.mention)
                        continue

                if len(joins) == 0:
                    winnersList = []
                else:
                    if len(joins) <= int(row['winners']):
                        winnersList = random.sample(joins, len(joins))
                    else:
                        winnersList = random.sample(joins, int(row['winners']))

                if len(winnersList) == 0:
                    embed = discord.Embed(title=f"Giveaway by {host.name}",
                                          description="Giveaway has ended, but there are no winners",
                                          color=discord.Color.dark_red())
                else:
                    embed = discord.Embed(title=f"Giveaway by {host.name}",
                                          description=f"Giveaway has ended. Winners are:\n" +
                                          "\n".join(x for x in winnersList),
                                          color=discord.Color.dark_gold())
                    embed.add_field(name="Prize:", value=row['prize'])
                    embed.add_field(name="Ended at:", value=f"<t:{str(row['end']).split('.')[0]}:f> UTC.")

                await message.edit(embed=embed)
                cursor.execute("DELETE FROM giveaways WHERE message = %s", (row['message'],))
                db.commit()
            except Exception as e:
                print(e)
                cursor.execute("DELETE FROM giveaways WHERE message = %s", (row['message'],))
                db.commit()


@tree.command(name="start", description="start a giveaway")
@app_commands.describe(winners="number of winners", prize="name/description of prize", end="giveaway time for example 1d 20h")
@app_commands.checks.has_permissions(administrator=True)
async def start(interaction: discord.Interaction, winners: int, prize: str, end: str):
    times = end.split(" ")
    end_date = datetime.datetime.utcnow()
    for i in times:
        if i.endswith('d'):
            end_date += datetime.timedelta(days=int(i[:-1]))
        elif i.endswith('h'):
            end_date += datetime.timedelta(hours=int(i[:-1]))
        elif i.endswith('m'):
            end_date += datetime.timedelta(minutes=int(i[:-1]))
        elif i.endswith('s'):
            end_date += datetime.timedelta(seconds=int(i[:-1]))
        else:
            await interaction.response.send_message(f"Invalid format `{i}`", ephemeral=True)
            return

    embed = discord.Embed(title=f"Giveaway by {interaction.user.name}", description=f"Ends at {str(end_date).split('.')[0]} UTC.",
                          color=discord.Color.dark_gold())
    embed.add_field(name="Prize:", value=prize)
    embed.add_field(name="Ends:", value=f"<t:{str(end_date.timestamp()).split('.')[0]}:f> UTC.")
    embed.add_field(name="Winners:", value=winners)
    message = await interaction.channel.send(embed=embed)
    await message.add_reaction("🎉")
    sql = "INSERT INTO giveaways (guild, channel, message, host, winners, prize, start, end) VALUES (%s, %s, %s, %s, %s, %s, %s, %s)"
    val = (interaction.guild.id, interaction.channel.id, message.id, interaction.user.id, winners, prize, datetime.datetime.utcnow().timestamp(), end_date.timestamp())
    cursor.execute(sql, val)
    db.commit()
    await interaction.response.send_message("Giveaway started!", ephemeral=True)

client.run("TOKEN")