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@josefrichter
Created September 9, 2021 17:32
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Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=undefined&optimize=false&runs=200&gist=
pragma solidity >=0.7.0 <0.9.0;
contract MyContract {
mapping(address => uint256) public balances;
address payable wallet;
event Purchase(
address indexed _buyer,
uint256 _amount
);
constructor(address payable _wallet) {
wallet = _wallet;
}
fallback() external payable {
// buyToken();
}
receive() external payable {
buyToken();
}
function buyToken() public payable {
// buy a token
balances[msg.sender] += 1;
// send ether to the wallet
wallet.transfer(msg.value);
emit Purchase(msg.sender, 1);
}
}
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