contract SpinToken is MyAdvancedToken {
	using SafeMath for uint256;

	bool public paused;

	mapping (address => bool) public allowMintTransfer;
	mapping (address => bool) public allowBurn;

	event Mint(address indexed account, uint256 value);

	/**
	 * @dev Checks if account address is allowed to mint and transfer
	 */
	modifier onlyMintTransferBy(address account) {
		require(allowMintTransfer[account] == true || account == developer);
		_;
	}

	/**
	 * @dev Checks if account address is allowed to burn token
	 */
	modifier onlyBurnBy(address account) {
		require(allowBurn[account] == true || account == developer);
		_;
	}

	/**
	 * @dev Checks if contract is currently active
	 */
	modifier contractIsActive {
		require(paused == false);
		_;
	}

	/**
	 * Constructor
	 * @dev Initializes contract with initial supply tokens to the creator of the contract
	 */
	constructor(
		uint256 initialSupply,
		string tokenName,
		string tokenSymbol
	) MyAdvancedToken(initialSupply, tokenName, tokenSymbol) public {}

	/******************************************/
	/*       DEVELOPER ONLY METHODS           */
	/******************************************/
	/**
	 * @dev Only developer can pause contract
	 * @param _paused The boolean value to be set
	 */
	function setPaused(bool _paused) public onlyDeveloper {
		paused = _paused;
	}

	/**
	 * @dev Only developer can allow `_account` address to mint transfer
	 * @param _account The address of the sender
	 * @param _allowed The boolean value to be set
	 */
	function setAllowMintTransfer(address _account, bool _allowed) public onlyDeveloper {
		allowMintTransfer[_account] = _allowed;
	}

	/**
	 * @dev Only developer can allow `_account` address to burn token
	 * @param _account The address of the sender
	 * @param _allowed The boolean value to be set
	 */
	function setAllowBurn(address _account, bool _allowed) public onlyDeveloper {
		allowBurn[_account] = _allowed;
	}

	/******************************************/
	/*            PUBLIC METHODS              */
	/******************************************/

	/**
	 * @dev Get total supply
	 * @return The token total supply
	 */
	function getTotalSupply() public constant returns (uint256) {
		return totalSupply;
	}

	/**
	 * @dev Get balance of an account
	 * @param account The account to be checked
	 * @return The token balance of the account
	 */
	function getBalanceOf(address account) public constant returns (uint256) {
		return balanceOf[account];
	}

	/**
	 * Transfer tokens
	 *
	 * Send `_value` tokens to `_to` from your account
	 *
	 * @param _to The address of the recipient
	 * @param _value the amount to send
	 */
	function transfer(address _to, uint256 _value) public contractIsActive returns (bool success) {
		_transfer(msg.sender, _to, _value);
		return true;
	}

	/**
	 * Transfer tokens from other address
	 *
	 * Send `_value` tokens 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 contractIsActive returns (bool success) {
		require(_value <= allowance[_from][msg.sender]);     // Check allowance
		allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);
		_transfer(_from, _to, _value);
		return true;
	}

	/**
	 * Set allowance for other address
	 *
	 * Allows `_spender` to spend no more than `_value` tokens in your behalf
	 *
	 * @param _spender The address authorized to spend
	 * @param _value the max amount they can spend
	 */
	function approve(address _spender, uint256 _value) public contractIsActive returns (bool success) {
		allowance[msg.sender][_spender] = _value;
		emit Approval(msg.sender, _spender, _value);
		return true;
	}

	/**
	 * Set allowance for other address and notify
	 *
	 * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it
	 *
	 * @param _spender The address authorized to spend
	 * @param _value the max amount they can spend
	 * @param _extraData some extra information to send to the approved contract
	 */
	function approveAndCall(address _spender, uint256 _value, bytes _extraData)
		public
		contractIsActive
		returns (bool success) {
		tokenRecipient spender = tokenRecipient(_spender);
		if (approve(_spender, _value)) {
			spender.receiveApproval(msg.sender, _value, this, _extraData);
			return true;
		}
	}

	/**
	 * Destroy tokens
	 *
	 * Remove `_value` tokens from the system irreversibly
	 *
	 * @param _value the amount of money to burn
	 */
	function burn(uint256 _value) public contractIsActive returns (bool success) {
		require(balanceOf[msg.sender] >= _value);						// Check if the sender has enough
		balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value);		// Subtract from the sender
		totalSupply = totalSupply.sub(_value);							// Updates totalSupply
		emit Burn(msg.sender, _value);
		return true;
	}

	/**
	 * Destroy tokens from other account
	 *
	 * Remove `_value` tokens from the system irreversibly on behalf of `_from`.
	 *
	 * @param _from the address of the sender
	 * @param _value the amount of money to burn
	 */
	function burnFrom(address _from, uint256 _value) public contractIsActive returns (bool success) {
		require(balanceOf[_from] >= _value);									// Check if the targeted balance is enough
		require(_value <= allowance[_from][msg.sender]);						// Check allowance
		balanceOf[_from] = balanceOf[_from].sub(_value);						// Subtract from the targeted balance
		allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);// Subtract from the sender's allowance
		totalSupply = totalSupply.sub(_value);									// Update totalSupply
		emit Burn(_from, _value);
		return true;
	}

	/// @notice Buy tokens from contract by sending ether
	function buy() payable public contractIsActive {
		uint amount = msg.value.div(buyPrice);				// calculates the amount
		_transfer(this, msg.sender, amount);				// makes the transfers
	}

	/// @notice Sell `amount` tokens to contract
	/// @param amount amount of tokens to be sold
	function sell(uint256 amount) public contractIsActive {
		address myAddress = this;
		require(myAddress.balance >= amount.mul(sellPrice));	// checks if the contract has enough ether to buy
		_transfer(msg.sender, this, amount);					// makes the transfers
		msg.sender.transfer(amount.mul(sellPrice));				// sends ether to the seller. It's important to do this last to avoid recursion attacks
	}

	/**
	 * @dev Mints and transfers token to `_to` address.
	 * @param _to The address of the recipient
	 * @param _value The amount of token to mint and transfer
	 * @return Return true if success
	 */
	function mintTransfer(address _to, uint _value) public contractIsActive
		onlyMintTransferBy(msg.sender)
		returns (bool) {
		require(_value > 0);
		totalSupply = totalSupply.add(_value);
		/*
		 * We are actually minting to msg.sender
		 * and then transfer from msg.sender to to address
		 *
		 * Since they cancel out each other, we don't need
		 * these executions:
		 * balances[msg.sender] = balances[msg.sender].add(value);
		 * balances[msg.sender] = balances[msg.sender].sub(value);
		 */
		balanceOf[_to] = balanceOf[_to].add(_value);
		emit Mint(msg.sender, _value);
		emit Transfer(msg.sender, _to, _value);
		return true;
	}

	/**
	 * @dev Burns token at specific address.
	 * @param _at the address of the sender
	 * @param _value the amount of token to burn
	 * @return true if success
	 */
	function burnAt(address _at, uint _value) public contractIsActive
		onlyBurnBy(msg.sender)
		returns (bool) {
		balanceOf[_at] = balanceOf[_at].sub(_value);
		totalSupply = totalSupply.sub(_value);
		emit Burn(_at, _value);
		return true;
	}

	/******************************************/
	/*          INTERNAL METHODS              */
	/******************************************/

	/**
	 * @dev Internal transfer, only can be called by this contract
	 * @param _from The address of the sender
	 * @param _to The address of the recipient
	 * @param _value the amount to send
	 */
	function _transfer(address _from, address _to, uint256 _value) internal contractIsActive {
		// Prevent transfer to 0x0 address. Use burn() instead
		require(_to != 0x0);
		// Check if the sender has enough
		require(balanceOf[_from] >= _value);
		require(!frozenAccount[_from]);                     // Check if sender is frozen
		require(!frozenAccount[_to]);                       // Check if recipient is frozen
		// Save this for an assertion in the future
		uint previousBalances = balanceOf[_from].add(balanceOf[_to]);
		// Subtract from the sender
		balanceOf[_from] = balanceOf[_from].sub(_value);
		// Add the same to the recipient
		balanceOf[_to] = balanceOf[_to].add(_value);
		emit Transfer(_from, _to, _value);
		// Asserts are used to use static analysis to find bugs in your code. They should never fail
		assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
	}
}
/**
 * @title SpinToken
 */
function getTotalSupply() public constant returns (uint256) {
	return totalSupply;
}

/**
 	 * @dev Get total supply
 	 * @return The token total supply
 	 */