pragma solidity ^0.4.9;

contract SafeMath {
  function safeMul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function safeSub(uint a, uint b) internal returns (uint) {
    assert(b <= a);
    return a - b;
  }

  function safeAdd(uint a, uint b) internal returns (uint) {
    uint c = a + b;
    assert(c>=a && c>=b);
    return c;
  }

  function assert(bool assertion) internal {
    if (!assertion) throw;
  }
}

contract Token {
  /// @return total amount of tokens
  function totalSupply() constant returns (uint256 supply) {}

  /// @param _owner The address from which the balance will be retrieved
  /// @return The balance
  function balanceOf(address _owner) constant returns (uint256 balance) {}

  /// @notice send `_value` token to `_to` from `msg.sender`
  /// @param _to The address of the recipient
  /// @param _value The amount of token to be transferred
  /// @return Whether the transfer was successful or not
  function transfer(address _to, uint256 _value) returns (bool success) {}

  /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
  /// @param _from The address of the sender
  /// @param _to The address of the recipient
  /// @param _value The amount of token to be transferred
  /// @return Whether the transfer was successful or not
  function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}

  /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
  /// @param _spender The address of the account able to transfer the tokens
  /// @param _value The amount of wei to be approved for transfer
  /// @return Whether the approval was successful or not
  function approve(address _spender, uint256 _value) returns (bool success) {}

  /// @param _owner The address of the account owning tokens
  /// @param _spender The address of the account able to transfer the tokens
  /// @return Amount of remaining tokens allowed to spent
  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}

  event Transfer(address indexed _from, address indexed _to, uint256 _value);
  event Approval(address indexed _owner, address indexed _spender, uint256 _value);

  uint public decimals;
  string public name;
}

contract StandardToken is Token {

  function transfer(address _to, uint256 _value) returns (bool success) {
    //Default assumes totalSupply can't be over max (2^256 - 1).
    //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap.
    //Replace the if with this one instead.
    if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
    //if (balances[msg.sender] >= _value && _value > 0) {
      balances[msg.sender] -= _value;
      balances[_to] += _value;
      Transfer(msg.sender, _to, _value);
      return true;
    } else { return false; }
  }

  function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
    //same as above. Replace this line with the following if you want to protect against wrapping uints.
    if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
    //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
      balances[_to] += _value;
      balances[_from] -= _value;
      allowed[_from][msg.sender] -= _value;
      Transfer(_from, _to, _value);
      return true;
    } else { return false; }
  }

  function balanceOf(address _owner) constant returns (uint256 balance) {
    return balances[_owner];
  }

  function approve(address _spender, uint256 _value) returns (bool success) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }

  mapping(address => uint256) balances;

  mapping (address => mapping (address => uint256)) allowed;

  uint256 public totalSupply;
}

contract ReserveToken is StandardToken, SafeMath {
  address public minter;
  function ReserveToken() {
    minter = msg.sender;
  }
  function create(address account, uint amount) {
    if (msg.sender != minter) throw;
    balances[account] = safeAdd(balances[account], amount);
    totalSupply = safeAdd(totalSupply, amount);
  }
  function destroy(address account, uint amount) {
    if (msg.sender != minter) throw;
    if (balances[account] < amount) throw;
    balances[account] = safeSub(balances[account], amount);
    totalSupply = safeSub(totalSupply, amount);
  }
}

contract AccountLevels {
  //given a user, returns an account level
  //0 = regular user (pays take fee and make fee)
  //1 = market maker silver (pays take fee, no make fee, gets rebate)
  //2 = market maker gold (pays take fee, no make fee, gets entire counterparty's take fee as rebate)
  function accountLevel(address user) constant returns(uint) {}
}

contract AccountLevelsTest is AccountLevels {
  mapping (address => uint) public accountLevels;

  function setAccountLevel(address user, uint level) {
    accountLevels[user] = level;
  }

  function accountLevel(address user) constant returns(uint) {
    return accountLevels[user];
  }
}

contract EtherDelta is SafeMath {
  address public admin; //the admin address
  address public feeAccount; //the account that will receive fees
  address public accountLevelsAddr; //the address of the AccountLevels contract
  uint public feeMake; //percentage times (1 ether)
  uint public feeTake; //percentage times (1 ether)
  uint public feeRebate; //percentage times (1 ether)
  mapping (address => mapping (address => uint)) public tokens; //mapping of token addresses to mapping of account balances (token=0 means Ether)
  mapping (address => mapping (bytes32 => bool)) public orders; //mapping of user accounts to mapping of order hashes to booleans (true = submitted by user, equivalent to offchain signature)
  mapping (address => mapping (bytes32 => uint)) public orderFills; //mapping of user accounts to mapping of order hashes to uints (amount of order that has been filled)

  event Order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user);
  event Cancel(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s);
  event Trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address get, address give);
  event Deposit(address token, address user, uint amount, uint balance);
  event Withdraw(address token, address user, uint amount, uint balance);

  function EtherDelta(address admin_, address feeAccount_, address accountLevelsAddr_, uint feeMake_, uint feeTake_, uint feeRebate_) {
    admin = admin_;
    feeAccount = feeAccount_;
    accountLevelsAddr = accountLevelsAddr_;
    feeMake = feeMake_;
    feeTake = feeTake_;
    feeRebate = feeRebate_;
  }

  function() {
    throw;
  }

  function changeAdmin(address admin_) {
    if (msg.sender != admin) throw;
    admin = admin_;
  }

  function changeAccountLevelsAddr(address accountLevelsAddr_) {
    if (msg.sender != admin) throw;
    accountLevelsAddr = accountLevelsAddr_;
  }

  function changeFeeAccount(address feeAccount_) {
    if (msg.sender != admin) throw;
    feeAccount = feeAccount_;
  }

  function changeFeeMake(uint feeMake_) {
    if (msg.sender != admin) throw;
    if (feeMake_ > feeMake) throw;
    feeMake = feeMake_;
  }

  function changeFeeTake(uint feeTake_) {
    if (msg.sender != admin) throw;
    if (feeTake_ > feeTake || feeTake_ < feeRebate) throw;
    feeTake = feeTake_;
  }

  function changeFeeRebate(uint feeRebate_) {
    if (msg.sender != admin) throw;
    if (feeRebate_ < feeRebate || feeRebate_ > feeTake) throw;
    feeRebate = feeRebate_;
  }

  function deposit() payable {
    tokens[0][msg.sender] = safeAdd(tokens[0][msg.sender], msg.value);
    Deposit(0, msg.sender, msg.value, tokens[0][msg.sender]);
  }

  function withdraw(uint amount) {
    if (tokens[0][msg.sender] < amount) throw;
    tokens[0][msg.sender] = safeSub(tokens[0][msg.sender], amount);
    if (!msg.sender.call.value(amount)()) throw;
    Withdraw(0, msg.sender, amount, tokens[0][msg.sender]);
  }

  function depositToken(address token, uint amount) {
    //remember to call Token(address).approve(this, amount) or this contract will not be able to do the transfer on your behalf.
    if (token==0) throw;
    if (!Token(token).transferFrom(msg.sender, this, amount)) throw;
    tokens[token][msg.sender] = safeAdd(tokens[token][msg.sender], amount);
    Deposit(token, msg.sender, amount, tokens[token][msg.sender]);
  }

  function withdrawToken(address token, uint amount) {
    if (token==0) throw;
    if (tokens[token][msg.sender] < amount) throw;
    tokens[token][msg.sender] = safeSub(tokens[token][msg.sender], amount);
    if (!Token(token).transfer(msg.sender, amount)) throw;
    Withdraw(token, msg.sender, amount, tokens[token][msg.sender]);
  }

  function balanceOf(address token, address user) constant returns (uint) {
    return tokens[token][user];
  }

  function order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce) {
    bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce);
    orders[msg.sender][hash] = true;
    Order(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, msg.sender);
  }

  function trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount) {
    //amount is in amountGet terms
    bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce);
    if (!(
      (orders[user][hash] || ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash),v,r,s) == user) &&
      block.number <= expires &&
      safeAdd(orderFills[user][hash], amount) <= amountGet
    )) throw;
    tradeBalances(tokenGet, amountGet, tokenGive, amountGive, user, amount);
    orderFills[user][hash] = safeAdd(orderFills[user][hash], amount);
    Trade(tokenGet, amount, tokenGive, amountGive * amount / amountGet, user, msg.sender);
  }

  function tradeBalances(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address user, uint amount) private {
    uint feeMakeXfer = safeMul(amount, feeMake) / (1 ether);
    uint feeTakeXfer = safeMul(amount, feeTake) / (1 ether);
    uint feeRebateXfer = 0;
    if (accountLevelsAddr != 0x0) {
      uint accountLevel = AccountLevels(accountLevelsAddr).accountLevel(user);
      if (accountLevel==1) feeRebateXfer = safeMul(amount, feeRebate) / (1 ether);
      if (accountLevel==2) feeRebateXfer = feeTakeXfer;
    }
    tokens[tokenGet][msg.sender] = safeSub(tokens[tokenGet][msg.sender], safeAdd(amount, feeTakeXfer));
    tokens[tokenGet][user] = safeAdd(tokens[tokenGet][user], safeSub(safeAdd(amount, feeRebateXfer), feeMakeXfer));
    tokens[tokenGet][feeAccount] = safeAdd(tokens[tokenGet][feeAccount], safeSub(safeAdd(feeMakeXfer, feeTakeXfer), feeRebateXfer));
    tokens[tokenGive][user] = safeSub(tokens[tokenGive][user], safeMul(amountGive, amount) / amountGet);
    tokens[tokenGive][msg.sender] = safeAdd(tokens[tokenGive][msg.sender], safeMul(amountGive, amount) / amountGet);
  }

  function testTrade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount, address sender) constant returns(bool) {
    if (!(
      tokens[tokenGet][sender] >= amount &&
      availableVolume(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, user, v, r, s) >= amount
    )) return false;
    return true;
  }

  function availableVolume(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s) constant returns(uint) {
    bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce);
    if (!(
      (orders[user][hash] || ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash),v,r,s) == user) &&
      block.number <= expires
    )) return 0;
    uint available1 = safeSub(amountGet, orderFills[user][hash]);
    uint available2 = safeMul(tokens[tokenGive][user], amountGet) / amountGive;
    if (available1<available2) return available1;
    return available2;
  }

  function amountFilled(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s) constant returns(uint) {
    bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce);
    return orderFills[user][hash];
  }

  function cancelOrder(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, uint8 v, bytes32 r, bytes32 s) {
    bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce);
    if (!(orders[msg.sender][hash] || ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash),v,r,s) == msg.sender)) throw;
    orderFills[msg.sender][hash] = amountGet;
    Cancel(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, msg.sender, v, r, s);
  }
}

pragma solidity ^ 0.4.17;

contract SafeMath {
    function safeMul(uint a, uint b) pure internal returns(uint) {
        uint c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }

    function safeSub(uint a, uint b) pure internal returns(uint) {
        assert(b <= a);
        return a - b;
    }

    function safeAdd(uint a, uint b) pure internal returns(uint) {
        uint c = a + b;
        assert(c >= a && c >= b);
        return c;
    }
}

contract ERC20 {
    uint public totalSupply;

    function balanceOf(address who) public view returns(uint);

    function allowance(address owner, address spender) public view returns(uint);

    function transfer(address to, uint value) public returns(bool ok);

    function transferFrom(address from, address to, uint value) public returns(bool ok);

    function approve(address spender, uint value) public returns(bool ok);

    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}


contract Ownable {
    address public owner;

    function Ownable() public {
        owner = msg.sender;
    }

    function transferOwnership(address newOwner) public onlyOwner {
        if (newOwner != address(0)) 
            owner = newOwner;
    }

    function kill() public {
        if (msg.sender == owner) 
            selfdestruct(owner);
    }

    modifier onlyOwner() {
        if (msg.sender == owner)
            _;
    }
}





// The PPP token
contract Token is ERC20, SafeMath, Ownable {
    // Public variables of the token
    string public name;
    string public symbol;
    uint8 public decimals; // How many decimals to show.
    string public version = "v0.1";
    uint public initialSupply;
    uint public totalSupply;
    bool public locked;   
    address public preSaleAddress;       
    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;

    // Lock transfer for contributors during the ICO 
    modifier onlyUnlocked() {
        if (msg.sender != preSaleAddress && locked) 
            revert();
        _;
    }

    modifier onlyAuthorized() {
        if (msg.sender != owner) 
            revert();
        _;
    }

    // The PPP Token created with the time at which the crowdsale ends
    function Token() public {
        // Lock the transfCrowdsaleer function during the crowdsale
        locked = true;
        initialSupply = 165000000e18;
        totalSupply = initialSupply;
        name = "PayPie"; // Set the name for display purposes
        symbol = "PPP"; // Set the symbol for display purposes
        decimals = 18; // Amount of decimals for display purposes        
        preSaleAddress = 0xf8A15b1540d5f9D002D9cCb7FD1F23E795c2859d;      

        // Allocate tokens for pre-sale customers - private sale 
        balances[preSaleAddress] = 82499870672369211638818601 - 2534559883e16;
        // Allocate tokens for the team/reserve/advisors/
        balances[0xF821Fd99BCA2111327b6a411C90BE49dcf78CE0f] = totalSupply - balances[preSaleAddress];       
    }

    function unlock() public onlyAuthorized {
        locked = false;
    }

    function lock() public onlyAuthorized {
        locked = true;
    }

    function burn( address _member, uint256 _value) public onlyAuthorized returns(bool) {
        balances[_member] = safeSub(balances[_member], _value);
        totalSupply = safeSub(totalSupply, _value);
        Transfer(_member, 0x0, _value);
        return true;
    }

    function transfer(address _to, uint _value) public onlyUnlocked returns(bool) {
        balances[msg.sender] = safeSub(balances[msg.sender], _value);
        balances[_to] = safeAdd(balances[_to], _value);
        Transfer(msg.sender, _to, _value);
        return true;
    }

    
    function transferFrom(address _from, address _to, uint256 _value) public onlyUnlocked returns(bool success) {
        require(_to != address(0));
        require (balances[_from] >= _value); // Check if the sender has enough                            
        require (_value <= allowed[_from][msg.sender]); // Check if allowed is greater or equal        
        balances[_from] = safeSub(balances[_from], _value); // Subtract from the sender
        balances[_to] = safeAdd(balances[_to],_value); // Add the same to the recipient
        allowed[_from][msg.sender] = safeSub(allowed[_from][msg.sender],_value);  // decrease allowed amount
        Transfer(_from, _to, _value);
        return true;
    }

    function balanceOf(address _owner) public view returns(uint balance) {
        return balances[_owner];
    }


  /**
   * @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, uint _value) public returns(bool) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }


    function allowance(address _owner, address _spender) public view returns(uint remaining) {
        return allowed[_owner][_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
   */
  function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
    allowed[msg.sender][_spender] = safeAdd(allowed[msg.sender][_spender], _addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = safeSub(oldValue, _subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}