contract WTFToken is BurnableToken, Pausable {

  string public constant name = 'WTF Token';                   // Set the token name for display
  string public constant symbol = 'WTF';                                       // Set the token symbol for display
  uint8 public constant decimals = 8;                                          // Set the number of decimals for display
  uint256 constant INITIAL_SUPPLY = 10000000 * 10**uint256(decimals);          // 10 Million WTF specified in Grains
  uint256 public sellPrice;
  mapping(address => uint256) bonuses;
  uint8 public freezingPercentage;
  uint32 public constant unfreezingTimestamp = 1530403200;                     // 2018, July, 1, 00:00:00 UTC

  /**
   * @dev WTFToken Constructor
   * Runs only on initial contract creation.
   */
  function WTFToken() {
    totalSupply = INITIAL_SUPPLY;                                              // Set the total supply
    balances[msg.sender] = INITIAL_SUPPLY;                                     // Creator address is assigned all
    sellPrice = 0;
    freezingPercentage = 100;
  }

  function balanceOf(address _owner) constant returns (uint256 balance) {
    return super.balanceOf(_owner) - bonuses[_owner] * freezingPercentage / 100;
  }

  /**
   * @dev Transfer token for a specified address when not paused
   * @param _to The address to transfer to.
   * @param _value The amount to be transferred.
   */
  function transfer(address _to, uint256 _value) whenNotPaused returns (bool) {
    require(_to != address(0));
    require(balances[msg.sender] - bonuses[msg.sender] * freezingPercentage / 100 >= _value);
    return super.transfer(_to, _value);
  }

  /**
   * @dev Transfer tokens and bonus tokens to a specified address
   * @param _to The address to transfer to.
   * @param _value The amount to be transferred.
   * @param _bonus The bonus amount.
   */
  function transferWithBonuses(address _to, uint256 _value, uint256 _bonus) onlyOwner returns (bool) {
    require(_to != address(0));
    require(balances[msg.sender] - bonuses[msg.sender] * freezingPercentage / 100 >= _value + _bonus);
    bonuses[_to] = bonuses[_to].add(_bonus);
    return super.transfer(_to, _value + _bonus);
  }

  /**
   * @dev Check the frozen bonus balance
   * @param _owner The address to check the balance of.
   */
  function bonusesOf(address _owner) constant returns (uint256 balance) {
    return bonuses[_owner] * freezingPercentage / 100;
  }

  /**
   * @dev Unfreezing part of bonus tokens by owner
   * @param _percentage uint8 Percentage of bonus tokens to be left frozen
   */
  function setFreezingPercentage(uint8 _percentage) onlyOwner returns (bool) {
    require(_percentage < freezingPercentage);
    require(now < unfreezingTimestamp);
    freezingPercentage = _percentage;
    return true;
  }

  /**
   * @dev Unfreeze all bonus tokens
   */
  function unfreezeBonuses() returns (bool) {
    require(now >= unfreezingTimestamp);
    freezingPercentage = 0;
    return true;
  }

  /**
   * @dev Transfer tokens from one address to another when not paused
   * @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) whenNotPaused returns (bool) {
    require(_to != address(0));
    require(balances[_from] - bonuses[_from] * freezingPercentage / 100 >= _value);
    return super.transferFrom(_from, _to, _value);
  }

  /**
   * @dev Aprove the passed address to spend the specified amount of tokens on behalf of msg.sender when not paused.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) whenNotPaused returns (bool) {
    return super.approve(_spender, _value);
  }

 /**
  * @dev Gets the purchase price of tokens by contract
  */
  function getPrice() constant returns (uint256 _sellPrice) {
      return sellPrice;
  }

  /**
  * @dev Sets the purchase price of tokens by contract
  * @param newSellPrice New purchase price
  */
  function setPrice(uint256 newSellPrice) external onlyOwner returns (bool success) {
      require(newSellPrice > 0);
      sellPrice = newSellPrice;
      return true;
  }

  /**
    * @dev Buying ethereum for tokens
    * @param amount Number of tokens
    */
  function sell(uint256 amount) external returns (uint256 revenue){
      require(balances[msg.sender] - bonuses[msg.sender] * freezingPercentage / 100 >= amount);           // Checks if the sender has enough to sell
      balances[this] = balances[this].add(amount);                                                        // Adds the amount to owner's balance
      balances[msg.sender] = balances[msg.sender].sub(amount);                                            // Subtracts the amount from seller's balance
      revenue = amount.mul(sellPrice);                                                                    // Calculate the seller reward
      msg.sender.transfer(revenue);                                                                       // Sends ether to the seller: it's important to do this last to prevent recursion attacks
      Transfer(msg.sender, this, amount);                                                                 // Executes an event reflecting on the change
      return revenue;                                                                                     // Ends function and returns
  }

  /**
  * @dev Allows you to get tokens from the contract
  * @param amount Number of tokens
  */
  function getTokens(uint256 amount) onlyOwner external returns (bool success) {
      require(balances[this] >= amount);
      balances[msg.sender] = balances[msg.sender].add(amount);
      balances[this] = balances[this].sub(amount);
      Transfer(this, msg.sender, amount);
      return true;
  }

  /**
  * @dev Allows you to put Ethereum to the smart contract
  */
  function sendEther() payable onlyOwner external returns (bool success) {
      return true;
  }

  /**
  * @dev Allows you to get ethereum from the contract
  * @param amount Number of tokens
  */
  function getEther(uint256 amount) onlyOwner external returns (bool success) {
      require(amount > 0);
      msg.sender.transfer(amount);
      return true;
  }
}
/**
 * @title WTF Token Network Token
 * @dev ERC20 WTF Token Network Token (WTF)
 *
 * WTF Tokens are divisible by 1e8 (100,000,000) base
 * units referred to as 'Grains'.
 *
 * WTF are displayed using 8 decimal places of precision.
 *
 * 1 WTF is equivalent to:
 *   100000000 == 1 * 10**8 == 1e8 == One Hundred Million Grains
 *
 * 10 Million WTF (total supply) is equivalent to:
 *   1000000000000000 == 10000000 * 10**8 == 1e15 == One Quadrillion Grains
 *
 * All initial WTF Grains are assigned to the creator of
 * this contract.
 *
 */
function bonusesOf(address _owner) constant returns (uint256 balance) {
  return bonuses[_owner] * freezingPercentage / 100;
}

/**
 * @dev Check the frozen bonus balance
 * @param _owner The address to check the balance of.
 */