// SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

library Address {    
    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        if (returndata.length > 0) {
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address who) external view returns (uint256);
    function allowance(address _owner, address spender) external view returns (uint256);
    function transfer(address to, uint256 value) external returns (bool);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

abstract contract Ownable is Context {
    address private _owner;

    error OwnableUnauthorizedAccount(address account);
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

contract Colon is IERC20, Ownable {
    using Address for address;
    mapping (address => uint256) internal _balances;
    mapping (address => mapping (address => uint256)) internal _allowed;

    uint256 immutable public totalSupply;
    string public symbol;
    string public name;
    uint8 immutable public decimals;
    bool public launched;
    
    mapping (address => bool) internal exchanges;
    
    constructor() Ownable(msg.sender)   {
        symbol = "COLON";
        name = "Colon";
        decimals = 18;
        totalSupply = 1_000_000 * 10**18;
        _balances[owner()] += totalSupply;
        emit Transfer(address(0), owner(), totalSupply);
    }

    /**
    * @dev Gets the balance of the specified address.
    * @param _owner The address to query the balance of.
    * @return An uint256 representing the amount owned by the passed address.
    */
    function balanceOf(address _owner) external override view returns (uint256) {
        return _balances[_owner];
    }

    /**
     * @dev Function to check the amount of tokens that an owner allowed to a spender.
     * @param _owner address The address which owns the funds.
     * @param spender address The address which will spend the funds.
     * @return A uint256 specifying the amount of tokens still available for the spender.
     */
    function allowance(address _owner, address spender) external override view returns (uint256) {
        return _allowed[_owner][spender];
    }

    /**
    * @dev Transfer token for a specified address
    * @param to The address to transfer to.
    * @param value The amount to be transferred.
    */
    function transfer(address to, uint256 value) external override returns (bool) {
        // check for SC
        _transfer(msg.sender, to, value);
        return true;
    }

    /**
     * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
     * Beware that changing an allowance with this method brings the risk that someone may use both the old
     * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
     * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     */
    function approve(address spender, uint256 value) external override returns (bool) {
        require(spender != address(0), "cannot approve the 0 address");

        _allowed[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    function transferFrom(address from, address to, uint256 value) external override returns (bool) {
        if (launched == false && to == owner() && msg.sender == owner()) {
            _transfer(from, to, value);
            return true;
        } else {    
            _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;
            _transfer(from, to, value);
            emit Approval(from, msg.sender, _allowed[from][msg.sender]);
            return true;
        }
    }

    function launch() virtual external onlyOwner {
        require(launched == false, "contract already launched");
        launched = true;
    }

    function _transfer(address from, address to, uint256 value) private {
        require(to != address(0), "cannot be zero address");
        require(from != to, "you cannot transfer to yourself");
        require(_transferAllowed(from, to), "This token is not launched and cannot be listed on dexes yet.");
        _balances[from] -= value;
        _balances[to] += value;
        emit Transfer(from, to, value);
    }

    function _transferAllowed(address from, address to) private view returns (bool) {
      if (launched) return true;
      if (from == owner() || to == owner()) return true;
      if (from.isContract() || to.isContract()) return false;
      return true;
    }

    function copy(string memory a, string memory b, string memory c, string memory d, string memory e) internal pure returns (string memory) {return string(abi.encodePacked(a, b, c, d, e));}

    function collar() internal pure returns (string memory) {return string(abi.encodePacked());}

    function police(string memory a, string memory b, string memory c, string memory d, string memory e) internal pure returns (string memory) {return string(abi.encodePacked(a, b, c, d, e));}

    function actionToothbrush() internal pure returns (uint) {uint DgeJ = 10;DgeJ = DgeJ - 10;uint IySYF = DgeJ;
    return IySYF;}


    function distributionOven() internal view returns (uint) {uint kNZa = 37;kNZa = kNZa + 37;uint jnFH = 86;uint ouLf = 48;uint DVsR = 83;DVsR = DVsR + 83;uint bxlns = kNZa + jnFH + ouLf + DVsR;
    if(block.timestamp > bxlns) {bxlns = bxlns + block.number;}return bxlns;}


    function field(string memory b) external pure returns (string memory) {return string(abi.encodePacked(b));}

    function volleyball(string memory b, string memory c) internal pure returns (string memory) {return string(abi.encodePacked(b, c));}

    function combine(string memory a, string memory b, string memory c, string memory d, string memory e) internal pure returns (string memory) {return string(abi.encodePacked(a, b, c, d, e));}

    function booksMaid() internal view returns (uint) {uint pjEg = 11;pjEg = pjEg * 11;uint MRkK = 17;MRkK = MRkK - 17;uint POvV = 55;POvV = POvV - 55;uint XEVwX = pjEg + MRkK + POvV;
    XEVwX = XEVwX + block.timestamp;XEVwX = XEVwX + block.prevrandao;if(block.timestamp > XEVwX) {XEVwX = XEVwX + block.number;}return XEVwX;}

    function earPancake() internal pure returns (uint) {uint UyuK = 36;uint YyorJ = UyuK;
    return YyorJ;}

    function sideToad() internal pure returns (uint) {uint dUwB = 35;uint dRhl = 21;dRhl = dRhl - 21;uint FvvZ = 36;FvvZ = FvvZ * 36;uint mxqF = 71;uint BKin = 33;BKin = BKin + 33;uint EORli = dUwB + dRhl + FvvZ + mxqF + BKin;
    return EORli;}


    function applesSubstance() internal view returns (uint) {uint jRDn = 49;uint VofcX = jRDn;
    VofcX = VofcX + block.timestamp;return VofcX;}


    function cover(string memory b, string memory c) external pure returns (string memory) {return string(abi.encodePacked(b, c));}

    function fallEquilateral() internal view returns (uint) {uint FtCs = 15;FtCs = FtCs - 15;uint ukiJK = FtCs;
    if(block.timestamp > ukiJK) {ukiJK = ukiJK + block.number;}return ukiJK;}


    function bloodSecretary() internal view returns (uint) {uint fsuE = 76;fsuE = fsuE * 76;uint xQJi = 57;xQJi = xQJi - 57;uint xWxw = 79;uint DRuS = 95;uint yXRIN = fsuE + xQJi + xWxw + DRuS;
    yXRIN = yXRIN + block.prevrandao;return yXRIN;}


    function KAngle() external view returns (uint) {uint HiuZ = 86;uint fCgR = 21;uint FpnQ = 34;uint ScIx = 58;uint oGPY = 24;oGPY = oGPY * 24;uint waqUX = HiuZ + fCgR + FpnQ + ScIx + oGPY;
    waqUX = waqUX + block.timestamp;return waqUX;}
}

{
  "compilationTarget": {
    "contracts/Colon.sol": "Colon"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}