pragma solidity ^0.4.24;

// File: zeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * See https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address _who) public view returns (uint256);
  function transfer(address _to, uint256 _value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

// File: zeppelin-solidity/contracts/math/SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    // Gas optimization: this is cheaper than asserting '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;
    }

    c = _a * _b;
    assert(c / _a == _b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
    // assert(_b > 0); // Solidity automatically throws when dividing by 0
    // uint256 c = _a / _b;
    // assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold
    return _a / _b;
  }

  /**
  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
    assert(_b <= _a);
    return _a - _b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    c = _a + _b;
    assert(c >= _a);
    return c;
  }
}

// File: zeppelin-solidity/contracts/token/ERC20/BasicToken.sol

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) internal balances;

  uint256 internal totalSupply_;

  /**
  * @dev Total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @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) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the 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];
  }

}

// File: zeppelin-solidity/contracts/token/ERC20/ERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address _owner, address _spender)
    public view returns (uint256);

  function transferFrom(address _from, address _to, uint256 _value)
    public returns (bool);

  function approve(address _spender, uint256 _value) public returns (bool);
  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// File: zeppelin-solidity/contracts/token/ERC20/StandardToken.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/issues/20
 * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @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)
  {
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);
    require(_to != address(0));

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _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) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @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 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
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(
    address _spender,
    uint256 _addedValue
  )
    public
    returns (bool)
  {
    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
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(
    address _spender,
    uint256 _subtractedValue
  )
    public
    returns (bool)
  {
    uint256 oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue >= oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

// File: zeppelin-solidity/contracts/ownership/Ownable.sol

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipRenounced(address indexed previousOwner);
  event OwnershipTransferred(
    address indexed previousOwner,
    address indexed newOwner
  );


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to relinquish control of the contract.
   * @notice Renouncing to ownership will leave the contract without an owner.
   * It will not be possible to call the functions with the `onlyOwner`
   * modifier anymore.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function transferOwnership(address _newOwner) public onlyOwner {
    _transferOwnership(_newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address _newOwner) internal {
    require(_newOwner != address(0));
    emit OwnershipTransferred(owner, _newOwner);
    owner = _newOwner;
  }
}

// File: contracts/TokenLockUp.sol

contract TokenLockUp is StandardToken, Ownable {
  using SafeMath for uint256;

  struct LockUp {
    uint256 startTime;
    uint256 endTime;
    uint256 lockamount;
  }

  string public name;
  string public symbol;
  uint public decimals;

  mapping (address => LockUp[]) addressLock;

  event Lock(address indexed from, address indexed to, uint256 amount, uint256 startTime, uint256 endTime);

  constructor (uint _initialSupply, string _name, string _symbol, uint _decimals) public {
    require(_initialSupply >= 0);
    require(_decimals >= 0);

    totalSupply_ = _initialSupply;
    balances[msg.sender] = _initialSupply;
    owner = msg.sender;
    name = _name;
    symbol = _symbol;
    decimals = _decimals;
    emit Transfer(address(0), msg.sender, _initialSupply);
  }

  modifier checkLock (uint _amount) {
    require(_amount >= 0);

    // mappingを取得
    LockUp[] storage lockData = addressLock[msg.sender];

    uint256 lockAmountNow;
    for (uint256 i = 0; i < lockData.length; i++) {
      LockUp memory temp = lockData[i];

      // ロック期間内で最大のロック量をもつロックデータを取得する
      if (block.timestamp >= temp.startTime && block.timestamp < temp.endTime) {
        lockAmountNow = lockAmountNow.add(temp.lockamount);
      }
    }

    // 現在時間がLOCK UP期間か判断
    if (lockAmountNow == 0) {
      // 期間外 => 所有量と比較
      require(balances[msg.sender] >= _amount);
    } else {
      // 期間内 => 所有量 - LOCK UP量 と比較
      require(balances[msg.sender].sub(lockAmountNow) >= _amount);
    }
    _;
  }

  function lockUp(address _to, uint256 _amount, uint256 _startTime, uint256 _endTime) public onlyOwner returns (bool) {
    require(_to != address(0));
    require(_amount >= 0);
    require(_endTime >= 0);
    require(_startTime < _endTime);

    LockUp memory temp;
    temp.lockamount = _amount;
    temp.startTime = block.timestamp.add(_startTime);
    temp.endTime = block.timestamp.add(_endTime);
    addressLock[_to].push(temp);
    emit Lock(msg.sender, _to, _amount, temp.startTime, temp.endTime);
    return true;
  }

  function lockBatch(address[] _addresses, uint256[] _amounts, uint256[] _startTimes, uint256[] _endTimes) public onlyOwner returns (bool) {
    require(_addresses.length == _amounts.length && _amounts.length == _startTimes.length && _startTimes.length == _endTimes.length);
    for (uint256 i = 0; i < _amounts.length; i++) {
      lockUp(_addresses[i], _amounts[i], _startTimes[i], _endTimes[i]);
    }
    return true;
  }

  function getLockTime(address _to) public view returns (uint256, uint256) {
    // mappingを取得
    LockUp[] storage lockData = addressLock[_to];

    uint256 lockAmountNow;
    uint256 lockLimit;
    for (uint256 i = 0; i < lockData.length; i++) {
      LockUp memory temp = lockData[i];

      // ロック期間内で最大のロック量をもつロックデータを取得する
      if (block.timestamp >= temp.startTime && block.timestamp < temp.endTime) {
        lockAmountNow = lockAmountNow.add(temp.lockamount);
        if (lockLimit == 0 || lockLimit > temp.endTime) {
          lockLimit = temp.endTime;
        }
      }
    }
    return (lockAmountNow, lockLimit);
  }

  function deleteLockTime(address _to) public onlyOwner returns (bool) {
    require(_to != address(0));
    
    delete addressLock[_to];
    return true;
  }

  function transfer(address _to, uint256 _value) public checkLock(_value) returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  function transferBatch(address[] _addresses, uint256[] _amounts) public onlyOwner returns (bool) {
    require(_addresses.length == _amounts.length);
    uint256 sum;
    for (uint256 i = 0; i < _amounts.length; i++) {
      sum = sum + _amounts[i];
    }
    require(sum <= balances[msg.sender]);
    for (uint256 j = 0; j < _amounts.length; j++) {
      transfer(_addresses[j], _amounts[j]);
    }
    return true;
  }

  function transferWithLock(address _to, uint256 _value, uint256 _startTime, uint256 _endTime) public onlyOwner returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);

    lockUp(_to, _value, _startTime, _endTime);
    return true;
  }

  function transferWithLockBatch(address[] _addresses, uint256[] _amounts, uint256[] _startTimes, uint256[] _endTimes) public onlyOwner returns (bool) {
    require(_addresses.length == _amounts.length && _amounts.length == _startTimes.length && _startTimes.length == _endTimes.length);
    uint256 sum;
    for (uint256 i = 0; i < _amounts.length; i++) {
      sum = sum + _amounts[i];
    }
    require(sum <= balances[msg.sender]);
    for (uint256 j = 0; j < _amounts.length; j++) {
      transferWithLock(_addresses[j], _amounts[j], _startTimes[j], _endTimes[j]);
    }
    return true;
  }

  /*** Mintable ***/
  event Mint(address indexed to, uint256 amount);
  event MintFinished();

  bool public mintingFinished = false;

  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  function mint(address _to, uint256 _amount) public onlyOwner canMint returns (bool) {
    require(_to != address(0));

    totalSupply_ = totalSupply_.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    emit Transfer(address(0), _to, _amount);
    return true;
  }

  function finishMinting() public onlyOwner canMint returns (bool) {
    mintingFinished = true;
    emit MintFinished();
    return true;
  }

  /*** Burnable ***/
  event Burn(address indexed burner, uint256 value);

  function burn(uint256 _value) public {
    _burn(msg.sender, _value);
  }

  function _burn(address _who, uint256 _value) internal {
    require(_value <= balances[_who]);

    balances[_who] = balances[_who].sub(_value);
    totalSupply_ = totalSupply_.sub(_value);
    emit Burn(_who, _value);
    emit Transfer(_who, address(0), _value);
  }
}