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gas_bot.py
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gas_bot.py
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"""
Run a Discord bot that takes the !gas command and shows the status in an embed + shows the prices in the sidebar
"""
# Example:
# python3 gas_bot.py -s etherscan
from typing import Tuple
import logging
import yaml
import discord
import asyncio
from discord.ext.commands import Bot
import argparse
import requests
import time
def get_gas_from_etherscan(key: str,
verbose: bool = False) -> Tuple[int, int, int]:
"""
Fetch gas from Etherscan API
"""
r = requests.get('https://api.etherscan.io/api',
params={'module': 'gastracker',
'action': 'gasoracle',
'apikey': key})
if r.status_code == 200:
if verbose:
print('200 OK')
data = r.json().get('result')
return int(data['FastGasPrice']), int(data['ProposeGasPrice']), int(data['SafeGasPrice'])
else:
if verbose:
print(r.status_code)
time.sleep(10)
def get_gas_from_gasnow(verbose: bool = False) -> Tuple[int, int, int]:
"""
Fetch gas from Gasnow API
"""
r = requests.get('https://www.gasnow.org/api/v3/gas/price')
if r.status_code == 200:
if verbose:
print('200 OK')
data = r.json()['data']
return int(data['fast'] // 1e9), int(data['standard'] // 1e9), int(data['slow'] // 1e9)
else:
if verbose:
print(r.status_code)
time.sleep(10)
def get_gas_from_ethgasstation(key: str, verbose: bool = False):
"""
Fetch gas from ETHGASSTATION API
"""
r = requests.get('https://ethgasstation.info/api/ethgasAPI.json?', params={'api-key': key})
if r.status_code == 200:
if verbose:
print('200 OK')
data = r.json()
return int(data['fastest'] / 10), int(data['fast'] / 10), int(data['average'] / 10), int(
data['safeLow'] / 10), int(data['fastestWait'] * 60), int(data['fastWait'] * 60), int(
data['avgWait'] * 60), int(data['safeLowWait'] * 60)
else:
if verbose:
print(r.status_code)
time.sleep(10)
def main(source, verbose=False):
# 1. Instantiate the bot
# Allow the command prefix to be either ! or %
bot = Bot(command_prefix=('!', '%'), help_command=None)
@bot.command(pass_context=True, brief="Get ETH gas prices")
async def gas(ctx):
embed = discord.Embed(title=":fuelpump: Current gas prices")
if source == 'ethgasstation':
fastest, fast, average, slow, fastestWait, fastWait, avgWait, slowWait = get_gas_from_ethgasstation(
config['ethgasstationKey'],
verbose=verbose)
embed.add_field(name=f"Slow :turtle: | {slowWait} seconds", value=f"{round(float(slow), 1)} Gwei",
inline=False)
embed.add_field(name=f"Average :person_walking: | {avgWait} seconds",
value=f"{round(float(average), 1)} Gwei", inline=False)
embed.add_field(name=f"Fast :race_car: | {fastWait} seconds", value=f"{round(float(fast), 1)} Gwei",
inline=False)
embed.add_field(name=f"Quick :zap: | {fastestWait} seconds", value=f"{round(float(fastest), 1)} Gwei",
inline=False)
else:
if source == 'etherscan':
fast, average, slow = get_gas_from_etherscan(config['etherscanKey'], verbose=verbose)
else:
fast, average, slow = get_gas_from_gasnow(verbose=verbose)
embed.add_field(name=f"Slow :turtle:", value=f"{slow} Gwei", inline=False)
embed.add_field(name=f"Average :person_walking:", value=f"{average} Gwei", inline=False)
embed.add_field(name=f"Fast :zap:", value=f"{fast} Gwei", inline=False)
embed.set_footer(text=f"Fetched from {source}\nUse help to get the list of commands")
embed.set_author(
name='{0.display_name}'.format(ctx.author),
icon_url='{0.avatar_url}'.format(ctx.author)
)
await ctx.send(embed=embed)
@bot.command(pass_context=True, brief="Get the cost for each tx type")
async def fees(ctx):
calculate_eth_tx = lambda gwei, limit: round(gwei * limit * 0.000000001, 4)
fast, standard, slow = get_gas_from_gasnow(verbose=verbose)
eth_price = \
requests.get('https://api.coingecko.com/api/v3/simple/price?ids=ethereum&vs_currencies=usd').json()[
'ethereum'][
'usd']
simple_tx_fee_eth = calculate_eth_tx(fast, 21000)
simple_tx_fee_usd = round(simple_tx_fee_eth * eth_price, 2)
token_approve_eth = calculate_eth_tx(fast, 51000)
token_approve_usd = round(token_approve_eth * eth_price, 2)
token_transfer_eth = calculate_eth_tx(fast, 48000)
token_transfer_usd = round(token_transfer_eth * eth_price, 2)
range1_uniswap_eth = calculate_eth_tx(fast, 120000)
range1_uniswap_usd = round(range1_uniswap_eth * eth_price, 2)
range2_uniswap_eth = calculate_eth_tx(fast, 200000)
range2_uniswap_usd = round(range2_uniswap_eth * eth_price, 2)
fees_eth = f"**Fast: {fast}** **Standard: {standard}** **Slow: {slow}**\n"\
f"Simple ETH TX: **${simple_tx_fee_usd}** ({simple_tx_fee_eth} Ξ)\n" \
f"Token Approval (ERC20): **${token_approve_usd}** ({token_approve_eth} Ξ)\n" \
f"Token Transfer (ERC20): **${token_transfer_usd}** ({token_transfer_eth} Ξ)\n" \
f"Uniswap Trades: **${range1_uniswap_usd} - ${range2_uniswap_usd}** ({range1_uniswap_eth} Ξ - {range2_uniswap_eth} Ξ)\n"
await ctx.send(fees_eth)
@bot.command(pass_context=True, brief="Get list of commands")
async def help(ctx, args=None):
help_embed = discord.Embed(
title="Gas Tracker",
colour=discord.Colour.from_rgb(206, 17, 38))
help_embed.set_author(
name='{0.display_name}'.format(ctx.author),
icon_url='{0.avatar_url}'.format(ctx.author)
)
command_list = [x for x in bot.commands if not x.hidden]
def sortCommands(value):
return value.name
command_list.sort(key=sortCommands)
if not args:
help_embed.add_field(
name="Command Prefix",
value="`!`",
inline=False)
help_embed.add_field(
name="List of supported commands:",
value="```" + "\n".join(['{:>2}. {:<14}{}'.format(str(i + 1), x.name, x.brief) for i, x in
enumerate(command_list)]) + "```",
inline=False
)
else:
help_embed.add_field(
name="Nope.",
value="Don't think I got that command, boss."
)
help_embed.set_footer(text="For any inquiries, suggestions, or bug reports, get in touch with @Nerte#1804")
await ctx.send(embed=help_embed)
# 2. Load config
filename = 'config.yaml'
with open(filename) as f:
config = yaml.load(f, Loader=yaml.Loader)
async def send_update(fastest, average, slow, **kw):
status = f'⚡{fastest} |🐢{slow} | !help'
await bot.change_presence(activity=discord.Activity(type=discord.ActivityType.playing,
name=status))
for guild in bot.guilds:
guser = guild.get_member(bot.user.id);
await guser.edit(nick=f'Gas: 🚶{average}');
await asyncio.sleep(config['updateFreq']) # in seconds
@bot.event
async def on_ready():
"""
When discord client is ready
"""
while True:
# 3. Fetch gas
try:
if source == 'etherscan':
gweiList = get_gas_from_etherscan(config['etherscanKey'],
verbose=verbose)
elif source == 'gasnow':
gweiList = get_gas_from_gasnow(verbose=verbose)
elif source == 'ethgasstation':
gweiList = get_gas_from_ethgasstation(config['ethgasstationKey'])
await send_update(gweiList[0], gweiList[2], gweiList[3])
continue
else:
raise NotImplemented('Unsupported source')
# 4. Feed it to the bot
await send_update(*gweiList)
except Exception as exc:
logger.error(exc)
continue
bot.run(config['discordBotKey'])
if __name__ == '__main__':
logger = logging.getLogger('discord')
logger.setLevel(logging.DEBUG)
handler = logging.FileHandler(filename='discord.log', encoding='utf-8', mode='w')
handler.setFormatter(logging.Formatter('%(asctime)s:%(levelname)s:%(name)s: %(message)s'))
logger.addHandler(handler)
parser = argparse.ArgumentParser()
parser.add_argument('-s', '--source',
choices=['etherscan', 'gasnow', 'ethgasstation'],
default='etherscan',
help='select API')
parser.add_argument('-v', '--verbose',
action='store_true',
help='toggle verbose')
args = parser.parse_args()
main(source=args.source,
verbose=args.verbose)