contract TAOCurrency is TheAO {
	using SafeMath for uint256;

	// Public variables of the contract
	string public name;
	string public symbol;
	uint8 public decimals;

	// To differentiate denomination of TAO Currency
	uint256 public powerOfTen;

	uint256 public totalSupply;

	// This creates an array with all balances
	// address is the address of nameId, not the eth public address
	mapping (address => uint256) public balanceOf;

	// This generates a public event on the blockchain that will notify clients
	// address is the address of TAO/Name Id, not eth public address
	event Transfer(address indexed from, address indexed to, uint256 value);

	// This notifies clients about the amount burnt
	// address is the address of TAO/Name Id, not eth public address
	event Burn(address indexed from, uint256 value);

	/**
	 * Constructor function
	 *
	 * Initializes contract with initial supply TAOCurrency to the creator of the contract
	 */
	constructor (string memory _name, string memory _symbol, address _nameTAOPositionAddress) public {
		name = _name;		// Set the name for display purposes
		symbol = _symbol;	// Set the symbol for display purposes

		powerOfTen = 0;
		decimals = 0;

		setNameTAOPositionAddress(_nameTAOPositionAddress);
	}

	/**
	 * @dev Checks if the calling contract address is The AO
	 *		OR
	 *		If The AO is set to a Name/TAO, then check if calling address is the Advocate
	 */
	modifier onlyTheAO {
		require (AOLibrary.isTheAO(msg.sender, theAO, nameTAOPositionAddress));
		_;
	}

	/**
	 * @dev Check if `_id` is a Name or a TAO
	 */
	modifier isNameOrTAO(address _id) {
		require (AOLibrary.isName(_id) || AOLibrary.isTAO(_id));
		_;
	}

	/***** The AO ONLY METHODS *****/
	/**
	 * @dev Transfer ownership of The AO to new address
	 * @param _theAO The new address to be transferred
	 */
	function transferOwnership(address _theAO) public onlyTheAO {
		require (_theAO != address(0));
		theAO = _theAO;
	}

	/**
	 * @dev Whitelist `_account` address to transact on behalf of others
	 * @param _account The address to whitelist
	 * @param _whitelist Either to whitelist or not
	 */
	function setWhitelist(address _account, bool _whitelist) public onlyTheAO {
		require (_account != address(0));
		whitelist[_account] = _whitelist;
	}

	/**
	 * @dev The AO set the NameTAOPosition Address
	 * @param _nameTAOPositionAddress The address of NameTAOPosition
	 */
	function setNameTAOPositionAddress(address _nameTAOPositionAddress) public onlyTheAO {
		require (_nameTAOPositionAddress != address(0));
		nameTAOPositionAddress = _nameTAOPositionAddress;
	}

	/***** PUBLIC METHODS *****/
	/**
	 * @dev transfer TAOCurrency from other address
	 *
	 * Send `_value` TAOCurrency to `_to` in behalf of `_from`
	 *
	 * @param _from The address of the sender
	 * @param _to The address of the recipient
	 * @param _value the amount to send
	 */
	function transferFrom(address _from, address _to, uint256 _value) public inWhitelist isNameOrTAO(_from) isNameOrTAO(_to) returns (bool) {
		_transfer(_from, _to, _value);
		return true;
	}

	/**
	 * @dev Create `mintedAmount` TAOCurrency and send it to `target`
	 * @param target Address to receive TAOCurrency
	 * @param mintedAmount The amount of TAOCurrency it will receive
	 * @return true on success
	 */
	function mint(address target, uint256 mintedAmount) public inWhitelist isNameOrTAO(target) returns (bool) {
		_mint(target, mintedAmount);
		return true;
	}

	/**
	 *
	 * @dev Whitelisted address remove `_value` TAOCurrency from the system irreversibly on behalf of `_from`.
	 *
	 * @param _from the address of the sender
	 * @param _value the amount of money to burn
	 */
	function whitelistBurnFrom(address _from, uint256 _value) public inWhitelist isNameOrTAO(_from) returns (bool success) {
		require(balanceOf[_from] >= _value);                // Check if the targeted balance is enough
		balanceOf[_from] = balanceOf[_from].sub(_value);    // Subtract from the targeted balance
		totalSupply = totalSupply.sub(_value);              // Update totalSupply
		emit Burn(_from, _value);
		return true;
	}

	/***** INTERNAL METHODS *****/
	/**
	 * @dev Send `_value` TAOCurrency from `_from` to `_to`
	 * @param _from The address of sender
	 * @param _to The address of the recipient
	 * @param _value The amount to send
	 */
	function _transfer(address _from, address _to, uint256 _value) internal {
		require (_to != address(0));							// Prevent transfer to 0x0 address. Use burn() instead
		require (balanceOf[_from] >= _value);					// Check if the sender has enough
		require (balanceOf[_to].add(_value) >= balanceOf[_to]); // Check for overflows
		uint256 previousBalances = balanceOf[_from].add(balanceOf[_to]);
		balanceOf[_from] = balanceOf[_from].sub(_value);        // Subtract from the sender
		balanceOf[_to] = balanceOf[_to].add(_value);            // Add the same to the recipient
		emit Transfer(_from, _to, _value);
		assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
	}

	/**
	 * @dev Create `mintedAmount` TAOCurrency and send it to `target`
	 * @param target Address to receive TAOCurrency
	 * @param mintedAmount The amount of TAOCurrency it will receive
	 */
	function _mint(address target, uint256 mintedAmount) internal {
		balanceOf[target] = balanceOf[target].add(mintedAmount);
		totalSupply = totalSupply.add(mintedAmount);
		emit Transfer(address(0), address(this), mintedAmount);
		emit Transfer(address(this), target, mintedAmount);
	}
}
/**
 * @title TAOCurrency
 */
function setWhitelist(address _account, bool _whitelist) public onlyTheAO {
	require (_account != address(0));
	whitelist[_account] = _whitelist;
}

/**
 	 * @dev Whitelist `_account` address to transact on behalf of others
 	 * @param _account The address to whitelist
 	 * @param _whitelist Either to whitelist or not
 	 */