pragma solidity 0.4.24;

// File: ../../openzeppelin-solidity/contracts/token/ERC20/IERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
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);
}

// File: ../../openzeppelin-solidity/contracts/math/SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that revert on error
 */
library SafeMath {
    /**
    * @dev Multiplies two numbers, reverts on 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-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b);

        return c;
    }

    /**
    * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
    */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
    * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
    */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;

        return c;
    }

    /**
    * @dev Adds two numbers, reverts on overflow.
    */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);

        return c;
    }

    /**
    * @dev Divides two numbers and returns the remainder (unsigned integer modulo),
    * reverts when dividing by zero.
    */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
    }
}

// File: ../../openzeppelin-solidity/contracts/token/ERC20/ERC20.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
 * Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 *
 * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
 * all accounts just by listening to said events. Note that this isn't required by the specification, and other
 * compliant implementations may not do it.
 */
contract ERC20 is IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowed;

    uint256 private _totalSupply;

    /**
    * @dev Total number of tokens in existence
    */
    function totalSupply() public view returns (uint256) {
        return _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) public 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) public 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) public returns (bool) {
        _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) public returns (bool) {
        require(spender != address(0));

        _allowed[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    /**
     * @dev Transfer tokens from one address to another.
     * Note that while this function emits an Approval event, this is not required as per the specification,
     * and other compliant implementations may not emit the event.
     * @param from address The address which you want to send tokens from
     * @param to address The address which you want to transfer to
     * @param value uint256 the amount of tokens to be transferred
     */
    function transferFrom(address from, address to, uint256 value) public returns (bool) {
        _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
        _transfer(from, to, value);
        emit Approval(from, msg.sender, _allowed[from][msg.sender]);
        return true;
    }

    /**
     * @dev Increase the amount of tokens that an owner allowed to a spender.
     * approve should be called when allowed_[_spender] == 0. To increment
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param addedValue The amount of tokens to increase the allowance by.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        require(spender != address(0));

        _allowed[msg.sender][spender] = _allowed[msg.sender][spender].add(addedValue);
        emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
        return true;
    }

    /**
     * @dev Decrease the amount of tokens that an owner allowed to a spender.
     * approve should be called when allowed_[_spender] == 0. To decrement
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param subtractedValue The amount of tokens to decrease the allowance by.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        require(spender != address(0));

        _allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(subtractedValue);
        emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
        return true;
    }

    /**
    * @dev Transfer token for a specified addresses
    * @param from The address to transfer from.
    * @param to The address to transfer to.
    * @param value The amount to be transferred.
    */
    function _transfer(address from, address to, uint256 value) internal {
        require(to != address(0));

        _balances[from] = _balances[from].sub(value);
        _balances[to] = _balances[to].add(value);
        emit Transfer(from, to, value);
    }

    /**
     * @dev Internal function that mints an amount of the token and assigns it to
     * an account. This encapsulates the modification of balances such that the
     * proper events are emitted.
     * @param account The account that will receive the created tokens.
     * @param value The amount that will be created.
     */
    function _mint(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.add(value);
        _balances[account] = _balances[account].add(value);
        emit Transfer(address(0), account, value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account.
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burn(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account, deducting from the sender's allowance for said account. Uses the
     * internal burn function.
     * Emits an Approval event (reflecting the reduced allowance).
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burnFrom(address account, uint256 value) internal {
        _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(value);
        _burn(account, value);
        emit Approval(account, msg.sender, _allowed[account][msg.sender]);
    }
}

// File: contracts/ERC1132.sol

/**
 * @title ERC1132 interface
 * @dev see https://github.com/ethereum/EIPs/issues/1132
 */

contract ERC1132 {
    /**
     * @dev Reasons why a user's tokens have been locked
     */
    mapping(address => bytes32[]) public lockReason;

    /**
     * @dev locked token structure
     */
    struct lockToken {
        uint256 amount;
        uint256 validity;
        bool claimed;
    }

    /**
     * @dev Holds number & validity of tokens locked for a given reason for
     *      a specified address
     */
    mapping(address => mapping(bytes32 => lockToken)) public locked;

    /**
     * @dev Records data of all the tokens Locked
     */
    event Locked(
        address indexed account,
        bytes32 indexed reason,
        uint256 amount,
        uint256 validity
    );

    /**
     * @dev Records data of all the tokens unlocked
     */
    event Unlocked(
        address indexed account,
        bytes32 indexed reason,
        uint256 amount
    );

    /**
     * @dev Locks a specified amount of tokens against an address,
     *      for a specified reason and time
     * @param reason The reason to lock tokens
     * @param amount Number of tokens to be locked
     * @param time Lock time in seconds
     */
    function lock(bytes32 reason, uint256 amount, uint256 time)
        public returns (bool);

    /**
     * @dev Returns tokens locked for a specified address for a
     *      specified reason
     *
     * @param account The address whose tokens are locked
     * @param reason The reason to query the lock tokens for
     */
    function tokensLocked(address account, bytes32 reason)
        public view returns (uint256 amount);

    /**
     * @dev Returns tokens locked for a specified address for a
     *      specified reason at a specific time
     *
     * @param account The address whose tokens are locked
     * @param reason The reason to query the lock tokens for
     * @param time The timestamp to query the lock tokens for
     */
    function tokensLockedAtTime(address account, bytes32 reason, uint256 time)
        public view returns (uint256 amount);

    /**
     * @dev Returns total tokens held by an address (locked + transferable)
     * @param who The address to query the total balance of
     */
    function totalBalanceOf(address who)
        public view returns (uint256 amount);

    /**
     * @dev Extends lock for a specified reason and time
     * @param reason The reason to lock tokens
     * @param time Lock extension time in seconds
     */
    function extendLock(bytes32 reason, uint256 time)
        public returns (bool);

    /**
     * @dev Increase number of tokens locked for a specified reason
     * @param reason The reason to lock tokens
     * @param amount Number of tokens to be increased
     */
    function increaseLockAmount(bytes32 reason, uint256 amount)
        public returns (bool);

    /**
     * @dev Returns unlockable tokens for a specified address for a specified reason
     * @param who The address to query the the unlockable token count of
     * @param reason The reason to query the unlockable tokens for
     */
    function tokensUnlockable(address who, bytes32 reason)
        public view returns (uint256 amount);

    /**
     * @dev Unlocks the unlockable tokens of a specified address
     * @param account Address of user, claiming back unlockable tokens
     */
    function unlock(address account)
        public returns (uint256 unlockableTokens);

    /**
     * @dev Gets the unlockable tokens of a specified address
     * @param account The address to query the the unlockable token count of
     */
    function getUnlockableTokens(address account)
        public view returns (uint256 unlockableTokens);

}

// File: contracts/LockableToken.sol

contract LockableToken is ERC1132, ERC20 {

   /**
    * @dev Error messages for require statements
    */
    string internal constant ALREADY_LOCKED = "Tokens already locked";
    string internal constant NOT_LOCKED = "No tokens locked";
    string internal constant AMOUNT_ZERO = "Amount can not be 0";

   /**
    * @dev constructor to mint initial tokens
    * Shall update to _mint once openzepplin updates their npm package.
    */
    constructor(uint256 supply) public {
        _mint(msg.sender, supply);
    }

    /**
     * @dev Locks a specified amount of tokens against an address,
     *      for a specified reason and time
     * @param reason The reason to lock tokens
     * @param amount Number of tokens to be locked
     * @param time Lock time in seconds
     */
    function lock(bytes32 reason, uint256 amount, uint256 time)
        public
        returns (bool)
    {
        uint256 validUntil = now.add(time); //solhint-disable-line

        // If tokens are already locked, then functions extendLock or
        // increaseLockAmount should be used to make any changes
        require(tokensLocked(msg.sender, reason) == 0, ALREADY_LOCKED);
        require(amount != 0, AMOUNT_ZERO);

        if (locked[msg.sender][reason].amount == 0)
            lockReason[msg.sender].push(reason);

        _transfer(msg.sender, address(this), amount);

        locked[msg.sender][reason] = lockToken(amount, validUntil, false);

        emit Locked(msg.sender, reason, amount, validUntil);
        return true;
    }

    /**
     * @dev Transfers and Locks a specified amount of tokens,
     *      for a specified reason and time
     * @param to adress to which tokens are to be transfered
     * @param reason The reason to lock tokens
     * @param amount Number of tokens to be transfered and locked
     * @param time Lock time in seconds
     */
    function transferWithLock(address to, bytes32 reason, uint256 amount, uint256 time)
        public
        returns (bool)
    {
        uint256 validUntil = now.add(time); //solhint-disable-line

        require(tokensLocked(to, reason) == 0, ALREADY_LOCKED);
        require(amount != 0, AMOUNT_ZERO);

        if (locked[to][reason].amount == 0)
            lockReason[to].push(reason);

        _transfer(msg.sender, address(this), amount);

        locked[to][reason] = lockToken(amount, validUntil, false);

        emit Locked(to, reason, amount, validUntil);
        return true;
    }

    /**
     * @dev Returns tokens locked for a specified address for a
     *      specified reason
     *
     * @param account The address whose tokens are locked
     * @param reason The reason to query the lock tokens for
     */
    function tokensLocked(address account, bytes32 reason)
        public
        view
        returns (uint256 amount)
    {
        if (!locked[account][reason].claimed)
            amount = locked[account][reason].amount;
    }

    /**
     * @dev Returns tokens locked for a specified address for a
     *      specified reason at a specific time
     *
     * @param account The address whose tokens are locked
     * @param reason The reason to query the lock tokens for
     * @param time The timestamp to query the lock tokens for
     */
    function tokensLockedAtTime(address account, bytes32 reason, uint256 time)
        public
        view
        returns (uint256 amount)
    {
        if (locked[account][reason].validity > time)
            amount = locked[account][reason].amount;
    }

    /**
     * @dev Returns total tokens held by an address (locked + transferable)
     * @param who The address to query the total balance of
     */
    function totalBalanceOf(address who)
        public
        view
        returns (uint256 amount)
    {
        amount = balanceOf(who);

        for (uint256 i = 0; i < lockReason[who].length; i++) {
            amount = amount.add(tokensLocked(who, lockReason[who][i]));
        }
    }

    /**
     * @dev Extends lock for a specified reason and time
     * @param reason The reason to lock tokens
     * @param time Lock extension time in seconds
     */
    function extendLock(bytes32 reason, uint256 time)
        public
        returns (bool)
    {
        require(tokensLocked(msg.sender, reason) > 0, NOT_LOCKED);

        locked[msg.sender][reason].validity = locked[msg.sender][reason].validity.add(time);

        emit Locked(msg.sender, reason, locked[msg.sender][reason].amount, locked[msg.sender][reason].validity);
        return true;
    }

    /**
     * @dev Increase number of tokens locked for a specified reason
     * @param reason The reason to lock tokens
     * @param amount Number of tokens to be increased
     */
    function increaseLockAmount(bytes32 reason, uint256 amount)
        public
        returns (bool)
    {
        require(tokensLocked(msg.sender, reason) > 0, NOT_LOCKED);
        _transfer(msg.sender, address(this), amount);

        locked[msg.sender][reason].amount = locked[msg.sender][reason].amount.add(amount);

        emit Locked(msg.sender, reason, locked[msg.sender][reason].amount, locked[msg.sender][reason].validity);
        return true;
    }

    /**
     * @dev Returns unlockable tokens for a specified address for a specified reason
     * @param who The address to query the the unlockable token count of
     * @param reason The reason to query the unlockable tokens for
     */
    function tokensUnlockable(address who, bytes32 reason)
        public
        view
        returns (uint256 amount)
    {
        if (locked[who][reason].validity <= now && !locked[who][reason].claimed) //solhint-disable-line
            amount = locked[who][reason].amount;
    }

    /**
     * @dev Unlocks the unlockable tokens of a specified address
     * @param account Address of user, claiming back unlockable tokens
     */
    function unlock(address account)
        public
        returns (uint256 unlockableTokens)
    {
        uint256 lockedTokens;

        for (uint256 i = 0; i < lockReason[account].length; i++) {
            lockedTokens = tokensUnlockable(account, lockReason[account][i]);
            if (lockedTokens > 0) {
                unlockableTokens = unlockableTokens.add(lockedTokens);
                locked[account][lockReason[account][i]].claimed = true;
                emit Unlocked(account, lockReason[account][i], lockedTokens);
            }
        }

        if (unlockableTokens > 0)
            _transfer(address(this), account, unlockableTokens);
    }

    /**
     * @dev Gets the unlockable tokens of a specified address
     * @param account The address to query the the unlockable token count of
     */
    function getUnlockableTokens(address account)
        public
        view
        returns (uint256 unlockableTokens)
    {
        for (uint256 i = 0; i < lockReason[account].length; i++) {
            unlockableTokens = unlockableTokens.add(tokensUnlockable(account, lockReason[account][i]));
        }
    }
}

// File: ../../openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol

/**
 * @title ERC20Detailed token
 * @dev The decimals are only for visualization purposes.
 * All the operations are done using the smallest and indivisible token unit,
 * just as on Ethereum all the operations are done in wei.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    constructor (string name, string symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @return the name of the token.
     */
    function name() public view returns (string) {
        return _name;
    }

    /**
     * @return the symbol of the token.
     */
    function symbol() public view returns (string) {
        return _symbol;
    }

    /**
     * @return the number of decimals of the token.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}

// File: contracts/BluenoteToken.sol

contract BluenoteToken is LockableToken, ERC20Detailed {


  /**
   * @dev constructor to call constructors for LockableTocken and ERC20Detailed
   *
   */
    constructor() public
        ERC20Detailed("Bluenote World Token", "BNOW", 18)
        LockableToken(12500000000000000000000000000) {
        //
    }


}