// SPDX-License-Identifier: MIT
pragma solidity >=0.4.22 <0.9.0;

import "./BaseContract.sol";

contract Bank is BaseContract{
	address[] public atms;
	event NoMoney(address from, uint amount, uint balance);
	event Withdraw(address from, uint amount, uint balance);
	event AddATM(address atm);
	constructor() {}

	modifier onlyATM() {
		bool found = false;
		for(uint i=0; i<atms.length; i++) {
			if(msg.sender == atms[i]){
				found = true;
				break;
			}
		}
		require(found, "You're not our ATM.");
		_;
	}

	function getATMs() public view returns (address[] memory){
		return atms;
	}

	function addATM(address atm) public onlyOwner {
		atms.push(atm);
		emit AddATM(atm);
	}

	function withdraw(uint amount) public onlyATM {
		if(amount>address(this).balance){
			emit NoMoney(msg.sender, amount, address(this).balance);
			revert("Bank doesn't have enough money to withdraw");
		}
		payable(msg.sender).transfer(amount);
		emit Withdraw(msg.sender, amount, address(this).balance);
	}
}