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 ^0.4.11;

contract owned {

        address public owner;

        function owned() {
                owner = msg.sender;
        }

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


}

contract tokenRecipient {
        function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData);
}

contract IERC20Token {

        /// @return total amount of tokens
        function totalSupply() constant returns (uint256 totalSupply);

        /// @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);
        event Burn(address indexed from, uint256 value);
}

contract Hedge is IERC20Token, owned{

        /* Public variables of the token */
        string public standard = "Hedge v1.0";
        string public name = "Hedge";
        string public symbol = "HDG";
        uint8 public decimals = 18;
        uint256 public initialSupply = 50000000 * 10 ** 18;
        uint256 public tokenFrozenUntilBlock;
        uint256 public timeLock = block.timestamp + 180 days; //cofounders time lock

        /* Private variables of the token */
        uint256 supply = initialSupply;
        mapping (address => uint256) balances;
        mapping (address => mapping (address => uint256)) allowances;
        mapping (address => bool) restrictedAddresses;

        event TokenFrozen(uint256 _frozenUntilBlock, string _reason);

        /* Initializes contract and  sets restricted addresses */
        function Hedge() {
                restrictedAddresses[0x0] = true;                        // Users cannot send tokens to 0x0 address
                restrictedAddresses[address(this)] = true;      // Users cannot sent tokens to this contracts address
                balances[msg.sender] = 50000000 * 10 ** 18;
        }

        /* Get total supply of issued coins */
        function totalSupply() constant returns (uint256 totalSupply) {
                return supply;
        }

        /* Get balance of specific address */
        function balanceOf(address _owner) constant returns (uint256 balance) {
                return balances[_owner];
        }

         function transferOwnership(address newOwner) onlyOwner {
                require(transfer(newOwner, balances[msg.sender]));
                owner = newOwner;
        }

        /* Send coins */
        function transfer(address _to, uint256 _value) returns (bool success) {
                require (block.number >= tokenFrozenUntilBlock) ;       // Throw is token is frozen in case of emergency
                require (!restrictedAddresses[_to]) ;                // Prevent transfer to restricted addresses
                require (balances[msg.sender] >= _value);           // Check if the sender has enough
                require (balances[_to] + _value >= balances[_to]) ;  // Check for overflows
                require (!(msg.sender == owner && block.timestamp < timeLock && (balances[msg.sender]-_value) < 10000000 * 10 ** 18));

                balances[msg.sender] -= _value;                     // Subtract from the sender
                balances[_to] += _value;                            // Add the same to the recipient
                Transfer(msg.sender, _to, _value);                  // Notify anyone listening that this transfer took place
                return true;
        }

        /* Allow another contract to spend some tokens in your behalf */
        function approve(address _spender, uint256 _value) returns (bool success) {
                require (block.number > tokenFrozenUntilBlock); // Throw is token is frozen in case of emergency
                allowances[msg.sender][_spender] = _value;          // Set allowance
                Approval(msg.sender, _spender, _value);             // Raise Approval event
                return true;
        }

        /* Approve and then communicate the approved contract in a single tx */
        function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
                tokenRecipient spender = tokenRecipient(_spender);              // Cast spender to tokenRecipient contract
                approve(_spender, _value);                                      // Set approval to contract for _value
                spender.receiveApproval(msg.sender, _value, this, _extraData);  // Raise method on _spender contract
                return true;
        }

        /* A contract attempts to get the coins */
        function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
                require (block.number > tokenFrozenUntilBlock); // Throw is token is frozen in case of emergency
                require (!restrictedAddresses[_to]);                // Prevent transfer to restricted addresses
                require(balances[_from] >= _value);                // Check if the sender has enough
                require (balances[_to] + _value >= balances[_to]);  // Check for overflows
                require (_value <= allowances[_from][msg.sender]);  // Check allowance
                require (!(_from == owner && block.timestamp < timeLock && (balances[_from]-_value) < 10000000 * 10 ** 18));
                balances[_from] -= _value;                          // Subtract from the sender
                balances[_to] += _value;                            // Add the same to the recipient
                allowances[_from][msg.sender] -= _value;            // Deduct allowance for this address
                Transfer(_from, _to, _value);                       // Notify anyone listening that this transfer took place
                return true;
        }

        function burn(uint256 _value) returns (bool success) {
                require(balances[msg.sender] >= _value);                 // Check if the sender has enough
                balances[msg.sender] -= _value;                          // Subtract from the sender
                supply-=_value;
                Burn(msg.sender, _value);
                return true;
        }

        function burnFrom(address _from, uint256 _value) returns (bool success) {
                require(balances[_from] >= _value);                // Check if the targeted balance is enough
                require(_value <= allowances[_from][msg.sender]);    // Check allowance
                balances[_from] -= _value;                         // Subtract from the targeted balance
                allowances[_from][msg.sender] -= _value;             // Subtract from the sender's allowance
                supply -= _value;                              // Update totalSupply
                Burn(_from, _value);
                return true;
        }

        /* Get the amount of remaining tokens to spend */
        function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
                return allowances[_owner][_spender];
        }



        /* Stops all token transfers in case of emergency */
        function freezeTransfersUntil(uint256 _frozenUntilBlock, string _reason) onlyOwner {
                tokenFrozenUntilBlock = _frozenUntilBlock;
                TokenFrozen(_frozenUntilBlock, _reason);
        }

        function unfreezeTransfersUntil(string _reason) onlyOwner {
                tokenFrozenUntilBlock = 0;
                TokenFrozen(0, _reason);
        }

        /* Owner can add new restricted address or removes one */
        function editRestrictedAddress(address _newRestrictedAddress) onlyOwner {
                restrictedAddresses[_newRestrictedAddress] = !restrictedAddresses[_newRestrictedAddress];
        }

        function isRestrictedAddress(address _queryAddress) constant returns (bool answer){
                return restrictedAddresses[_queryAddress];
        }
}