// File: @openzeppelin/contracts/math/SafeMath.sol

pragma solidity ^0.5.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     *
     * _Available since v2.4.0._
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: @openzeppelin/contracts/GSN/Context.sol

pragma solidity ^0.5.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol

pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: 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
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol

pragma solidity ^0.5.0;




/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20Mintable}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: burn from the zero address");

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance"));
    }
}

// File: @openzeppelin/contracts/token/ERC20/ERC20Detailed.sol

pragma solidity ^0.5.0;


/**
 * @dev Optional functions from the ERC20 standard.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}

// File: contracts/interface/IAddressConfig.sol

// SPDX-License-Identifier: MPL-2.0
pragma solidity >=0.5.17;

interface IAddressConfig {
	function token() external view returns (address);

	function allocator() external view returns (address);

	function allocatorStorage() external view returns (address);

	function withdraw() external view returns (address);

	function withdrawStorage() external view returns (address);

	function marketFactory() external view returns (address);

	function marketGroup() external view returns (address);

	function propertyFactory() external view returns (address);

	function propertyGroup() external view returns (address);

	function metricsGroup() external view returns (address);

	function metricsFactory() external view returns (address);

	function policy() external view returns (address);

	function policyFactory() external view returns (address);

	function policySet() external view returns (address);

	function policyGroup() external view returns (address);

	function lockup() external view returns (address);

	function lockupStorage() external view returns (address);

	function voteTimes() external view returns (address);

	function voteTimesStorage() external view returns (address);

	function voteCounter() external view returns (address);

	function voteCounterStorage() external view returns (address);

	function setAllocator(address _addr) external;

	function setAllocatorStorage(address _addr) external;

	function setWithdraw(address _addr) external;

	function setWithdrawStorage(address _addr) external;

	function setMarketFactory(address _addr) external;

	function setMarketGroup(address _addr) external;

	function setPropertyFactory(address _addr) external;

	function setPropertyGroup(address _addr) external;

	function setMetricsFactory(address _addr) external;

	function setMetricsGroup(address _addr) external;

	function setPolicyFactory(address _addr) external;

	function setPolicyGroup(address _addr) external;

	function setPolicySet(address _addr) external;

	function setPolicy(address _addr) external;

	function setToken(address _addr) external;

	function setLockup(address _addr) external;

	function setLockupStorage(address _addr) external;

	function setVoteTimes(address _addr) external;

	function setVoteTimesStorage(address _addr) external;

	function setVoteCounter(address _addr) external;

	function setVoteCounterStorage(address _addr) external;
}

// File: contracts/src/common/config/UsingConfig.sol

pragma solidity 0.5.17;


/**
 * Module for using AddressConfig contracts.
 */
contract UsingConfig {
	address private _config;

	/**
	 * Initialize the argument as AddressConfig address.
	 */
	constructor(address _addressConfig) public {
		_config = _addressConfig;
	}

	/**
	 * Returns the latest AddressConfig instance.
	 */
	function config() internal view returns (IAddressConfig) {
		return IAddressConfig(_config);
	}

	/**
	 * Returns the latest AddressConfig address.
	 */
	function configAddress() external view returns (address) {
		return _config;
	}
}

// File: contracts/interface/IAllocator.sol

// SPDX-License-Identifier: MPL-2.0
pragma solidity >=0.5.17;

interface IAllocator {
	function beforeBalanceChange(
		address _property,
		address _from,
		address _to
	) external;

	function calculateMaxRewardsPerBlock() external view returns (uint256);
}

// File: contracts/interface/IProperty.sol

// SPDX-License-Identifier: MPL-2.0
pragma solidity >=0.5.17;

interface IProperty {
	function author() external view returns (address);

	function withdraw(address _sender, uint256 _value) external;
}

// File: contracts/interface/IPolicy.sol

// SPDX-License-Identifier: MPL-2.0
pragma solidity >=0.5.17;

interface IPolicy {
	function rewards(uint256 _lockups, uint256 _assets)
		external
		view
		returns (uint256);

	function holdersShare(uint256 _amount, uint256 _lockups)
		external
		view
		returns (uint256);

	function authenticationFee(uint256 _assets, uint256 _propertyAssets)
		external
		view
		returns (uint256);

	function marketApproval(uint256 _agree, uint256 _opposite)
		external
		view
		returns (bool);

	function policyApproval(uint256 _agree, uint256 _opposite)
		external
		view
		returns (bool);

	function marketVotingBlocks() external view returns (uint256);

	function policyVotingBlocks() external view returns (uint256);

	function shareOfTreasury(uint256 _supply) external view returns (uint256);

	function treasury() external view returns (address);
}

// File: contracts/src/property/Property.sol

pragma solidity 0.5.17;


// prettier-ignore






/**
 * A contract that represents the assets of the user and collects staking from the stakers.
 * Property contract inherits ERC20.
 * Holders of Property contracts(tokens) receive holder rewards according to their share.
 */
contract Property is ERC20, ERC20Detailed, UsingConfig, IProperty {
	using SafeMath for uint256;
	uint8 private constant PROPERTY_DECIMALS = 18;
	uint256 private constant SUPPLY = 10000000000000000000000000;
	address public author;

	/**
	 * Initializes the passed value as AddressConfig address, author address, token name, and token symbol.
	 */
	constructor(
		address _config,
		address _own,
		string memory _name,
		string memory _symbol
	)
		public
		UsingConfig(_config)
		ERC20Detailed(_name, _symbol, PROPERTY_DECIMALS)
	{
		/**
		 * Validates the sender is PropertyFactory contract.
		 */
		require(
			msg.sender == config().propertyFactory(),
			"this is illegal address"
		);
		/**
		 * Sets the author.
		 */
		author = _own;

		/**
		 * Mints to the author and  treasury contract.
		 */
		IPolicy policy = IPolicy(config().policy());
		uint256 toTreasury = policy.shareOfTreasury(SUPPLY);
		uint256 toAuthor = SUPPLY.sub(toTreasury);
		require(toAuthor != 0, "share of author is 0");
		_mint(author, toAuthor);
		_mint(policy.treasury(), toTreasury);
	}

	/**
	 * Hook on `transfer` and call `Withdraw.beforeBalanceChange` function.
	 */
	function transfer(address _to, uint256 _value) public returns (bool) {
		/**
		 * Validates the destination is not 0 address.
		 */
		require(_to != address(0), "this is illegal address");
		require(_value != 0, "illegal transfer value");

		/**
		 * Calls Withdraw contract via Allocator contract.
		 * Passing through the Allocator contract is due to the historical reason for the old Property contract.
		 */
		IAllocator(config().allocator()).beforeBalanceChange(
			address(this),
			msg.sender,
			_to
		);

		/**
		 * Calls the transfer of ERC20.
		 */
		_transfer(msg.sender, _to, _value);
		return true;
	}

	/**
	 * Hook on `transferFrom` and call `Withdraw.beforeBalanceChange` function.
	 */
	function transferFrom(
		address _from,
		address _to,
		uint256 _value
	) public returns (bool) {
		/**
		 * Validates the source and destination is not 0 address.
		 */
		require(_from != address(0), "this is illegal address");
		require(_to != address(0), "this is illegal address");
		require(_value != 0, "illegal transfer value");

		/**
		 * Calls Withdraw contract via Allocator contract.
		 * Passing through the Allocator contract is due to the historical reason for the old Property contract.
		 */
		IAllocator(config().allocator()).beforeBalanceChange(
			address(this),
			_from,
			_to
		);

		/**
		 * Calls the transfer of ERC20.
		 */
		_transfer(_from, _to, _value);

		/**
		 * Reduces the allowance amount.
		 */
		uint256 allowanceAmount = allowance(_from, msg.sender);
		_approve(
			_from,
			msg.sender,
			allowanceAmount.sub(
				_value,
				"ERC20: transfer amount exceeds allowance"
			)
		);
		return true;
	}

	/**
	 * Transfers the staking amount to the original owner.
	 */
	function withdraw(address _sender, uint256 _value) external {
		/**
		 * Validates the sender is Lockup contract.
		 */
		require(msg.sender == config().lockup(), "this is illegal address");

		/**
		 * Transfers the passed amount to the original owner.
		 */
		ERC20 devToken = ERC20(config().token());
		bool result = devToken.transfer(_sender, _value);
		require(result, "dev transfer failed");
	}
}

{
  "compilationTarget": {
    "Property.sol": "Property"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}