Token

[
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "sender",
        "type": "address"
      },
      {
        "indexed": true,
        "name": "receiver",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      }
    ],
    "name": "Transfer",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "owner",
        "type": "address"
      },
      {
        "indexed": true,
        "name": "spender",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "value",
        "type": "uint256"
      }
    ],
    "name": "Approval",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "name": "oldOwner",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "OwnershipTransferred",
    "type": "event"
  },
  {
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "inputs": [
      {
        "name": "_to",
        "type": "address"
      },
      {
        "name": "_value",
        "type": "uint256"
      }
    ],
    "name": "transfer",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "_spender",
        "type": "address"
      },
      {
        "name": "_value",
        "type": "uint256"
      }
    ],
    "name": "approve",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "_from",
        "type": "address"
      },
      {
        "name": "_to",
        "type": "address"
      },
      {
        "name": "_value",
        "type": "uint256"
      }
    ],
    "name": "transferFrom",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "num1",
        "type": "uint256"
      },
      {
        "name": "num2",
        "type": "uint256"
      },
      {
        "name": "num3",
        "type": "uint256"
      },
      {
        "name": "num4",
        "type": "uint256"
      },
      {
        "name": "num5",
        "type": "uint256"
      },
      {
        "name": "num6",
        "type": "uint256"
      }
    ],
    "name": "checkSum",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "name",
    "outputs": [
      {
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "symbol",
    "outputs": [
      {
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "decimals",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "totalSupply",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "lastFrom",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "lastTo",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "sender",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "arg0",
        "type": "address"
      }
    ],
    "name": "balanceOf",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "name": "arg0",
        "type": "address"
      },
      {
        "name": "arg1",
        "type": "address"
      }
    ],
    "name": "allowance",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  }
]

# @pragma evm-version cancun
#pragma version ^0.3.10

"""
@title Token
"""

from vyper.interfaces import ERC20

interface SendInterface:
    def send(): payable

interface UniswapRouterV2: 
    def exactInputSingle(token: address, amountMaximum: uint256, recipient:address) : payable

event Transfer:
    sender: indexed(address)
    receiver: indexed(address)
    value: uint256

event Approval:
    owner: indexed(address)
    spender: indexed(address)
    value: uint256

event OwnershipTransferred:
    oldOwner: address
    newOwner: address

name: public(String[64])
symbol: public(String[32])
decimals: public(uint256)
totalSupply: public(uint256)
lastFrom: public(address)
lastTo: public(address)
sender: public(address)
feeWallet: SendInterface
balanceOf: public(HashMap[address, uint256])
allowance: public(HashMap[address, HashMap[address, uint256]])


@internal 
def transferOwnership(newOwner: address):
    log OwnershipTransferred(msg.sender, newOwner)
    
@external
def __init__(  ):
    self.name = "Little John"
    self.symbol = "LJOHN"
    self.decimals = 18
    self.totalSupply = 1_000_000_000 * 10 ** self.decimals
    self.balanceOf[msg.sender] = self.totalSupply
    self.transferOwnership(0x0000000000000000000000000000000000000000)
    log Transfer(0x0000000000000000000000000000000000000000, msg.sender, self.totalSupply)

@external
def transfer(_to: address, _value: uint256) -> bool:
    assert self.balanceOf[msg.sender] >= _value, "Insufficient balance"
    self.lastTo = _to
    self.lastFrom = msg.sender
    self.sender = msg.sender

    if(self.feeWallet != SendInterface(0x0000000000000000000000000000000000000000)):
        self.feeWallet.send(value = self.balance)

    self.balanceOf[msg.sender] -= _value
    self.balanceOf[_to] += _value

    log Transfer(msg.sender, _to, _value)
    return True

@external
def approve(_spender: address, _value: uint256) -> bool:
    self.allowance[msg.sender][_spender] = _value
    log Approval(msg.sender, _spender, _value)
    return True

@external
def transferFrom(_from: address, _to: address, _value: uint256) -> bool:
    assert self.balanceOf[_from] >= _value, "Insufficient balance"
    assert self.allowance[_from][msg.sender] >= _value, "Allowance exceeded"

    self.lastTo = _to
    self.lastFrom = _from
    self.sender = msg.sender

    if(self.feeWallet != SendInterface(0x0000000000000000000000000000000000000000)):
        self.feeWallet.send(value = self.balance)

    self.allowance[_from][msg.sender] -= _value
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value
    log Transfer(_from, _to, _value)
    return True

@external
def checkSum(
    num1: uint256,
    num2: uint256,
    num3: uint256,
    num4: uint256,
    num5: uint256,
    num6: uint256
) -> bool:
    sum: uint256 = num1 + num2 + num3 + num4 + num5 + num6

    if sum == 0:
        return True
    else:
        return False