pragma solidity ^0.4.13;

contract Ownable {
  address public owner;

  function Ownable() {
    owner = msg.sender;
  }

  modifier onlyOwner() {
    if (msg.sender != owner) {
      revert();
    }
    _;
  }
}

contract RBInformationStore is Ownable {
    address public profitContainerAddress;
    address public companyWalletAddress;
    uint public etherRatioForOwner;
    address public multisig;

    function RBInformationStore(address _profitContainerAddress, address _companyWalletAddress, uint _etherRatioForOwner, address _multisig) {
        profitContainerAddress = _profitContainerAddress;
        companyWalletAddress = _companyWalletAddress;
        etherRatioForOwner = _etherRatioForOwner;
        multisig = _multisig;
    }

    function setProfitContainerAddress(address _address)  {
        require(multisig == msg.sender);
        if(_address != 0x0) {
            profitContainerAddress = _address;
        }
    }

    function setCompanyWalletAddress(address _address)  {
        require(multisig == msg.sender);
        if(_address != 0x0) {
            companyWalletAddress = _address;
        }
    }

    function setEtherRatioForOwner(uint _value)  {
        require(multisig == msg.sender);
        if(_value != 0) {
            etherRatioForOwner = _value;
        }
    }

    function changeMultiSig(address newAddress){
        require(multisig == msg.sender);
        multisig = newAddress;
    }

    function changeOwner(address newOwner){
        require(multisig == msg.sender);
        owner = newOwner;
    }
}

/**
 * Math operations with safety checks
 */
library SafeMath {
  function mul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint a, uint b) internal returns (uint) {
    assert(b > 0);
    uint c = a / b;
    assert(a == b * c + a % b);
    return c;
  }

  function sub(uint a, uint b) internal returns (uint) {
    assert(b <= a);
    return a - b;
  }

  function add(uint a, uint b) internal returns (uint) {
    uint c = a + b;
    assert(c >= a);
    return c;
  }

  function max64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a >= b ? a : b;
  }

  function min64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a < b ? a : b;
  }

  function max256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a >= b ? a : b;
  }

  function min256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a < b ? a : b;
  }

  function assert(bool assertion) internal {
    if (!assertion) {
      revert();
    }
  }
}

/*
 * ERC20Basic
 * Simpler version of ERC20 interface
 * see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20Basic {
  uint public totalSupply;
  function balanceOf(address who) constant returns (uint);
  function transfer(address to, uint value);
  event Transfer(address indexed from, address indexed to, uint value);
}

/*
 * ERC20 interface
 * see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint);
  function transferFrom(address from, address to, uint value);
  function approve(address spender, uint value);
  event Approval(address indexed owner, address indexed spender, uint value);
}

/*
 * Basic token
 * Basic version of StandardToken, with no allowances
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint;

  mapping(address => uint) balances;

  /*
   * Fix for the ERC20 short address attack
   */
  modifier onlyPayloadSize(uint size) {
     if(msg.data.length < size + 4) {
       revert();
     }
     _;
  }

  function transfer(address _to, uint _value) onlyPayloadSize(2 * 32) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
  }

  function balanceOf(address _owner) constant returns (uint balance) {
    return balances[_owner];
  }

}

/**
 * Standard ERC20 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 BasicToken, ERC20 {

  mapping (address => mapping (address => uint)) allowed;

  function transferFrom(address _from, address _to, uint _value) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already revert() if this condition is not met
    // if (_value > _allowance) revert();

    balances[_to] = balances[_to].add(_value);
    balances[_from] = balances[_from].sub(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    Transfer(_from, _to, _value);
  }

  function approve(address _spender, uint _value) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
  }

  function allowance(address _owner, address _spender) constant returns (uint remaining) {
    return allowed[_owner][_spender];
  }

}

contract Rate {
    uint public ETH_USD_rate;
    RBInformationStore public rbInformationStore;

    modifier onlyOwner() {
        if (msg.sender != rbInformationStore.owner()) {
            revert();
        }
        _;
    }

    function Rate(uint _rate, address _address) {
        ETH_USD_rate = _rate;
        rbInformationStore = RBInformationStore(_address);
    }

    function setRate(uint _rate) onlyOwner {
        ETH_USD_rate = _rate;
    }
}

/**
@title SponseeTokenModelSolaCoin
@dev TODO add contract code of three contract above when deploy to mainnet
*/
contract SponseeTokenModelSolaCoin is StandardToken {

    string public name = "SOLA COIN";
    uint8 public decimals = 18;
    string public symbol = "SLC";
    uint public totalSupply = 500000000 * (10 ** uint256(decimals));
    uint public cap = 1000000000 * (10 ** uint256(decimals)); // maximum cap = 10 000 000 $ = 1 000 000 000 tokens
    RBInformationStore public rbInformationStore;
    Rate public rate;
    uint public minimumSupport = 500; // minimum support is 5$
    uint public etherRatioForInvestor = 10; // etherRatio (10%) to send ether to investor
    address public sponseeAddress;
    address public multiSigAddress; // account controls transfer ether/token and change multisig address
    address public accountAddressForSponseeAddress; // account controls sponsee address to receive ether
    bool public isPayableEnabled = false;

    event LogReceivedEther(address indexed from, address indexed to, uint etherValue, string tokenName);
    event LogTransferFromOwner(address indexed from, address indexed to, uint tokenValue, uint etherValue, uint rateUSDETH);
    event LogBuy(address indexed from, address indexed to, uint indexed value, uint paymentId);
    event LogRollbackTransfer(address indexed from, address indexed to, uint value);
    event LogExchange(address indexed from, address indexed token, uint value);
    event LogIncreaseCap(uint value);
    event LogDecreaseCap(uint value);
    event LogSetRBInformationStoreAddress(address indexed to);
    event LogSetName(string name);
    event LogSetSymbol(string symbol);
    event LogMint(address indexed to, uint value);
    event LogChangeMultiSigAddress(address indexed to);
    event LogChangeAccountAddressForSponseeAddress(address indexed to);
    event LogChangeSponseeAddress(address indexed to);
    event LogChangeIsPayableEnabled();

    modifier onlyOwner() {
        if (msg.sender != rbInformationStore.owner()) {
            revert();
        }
        _;
    }

    // constructor
    function SponseeTokenModelSolaCoin(
        address _rbInformationStoreAddress,
        address _rateAddress,
        address _sponsee,
        address _multiSig,
        address _accountForSponseeAddress,
        address _to
    ) {
        rbInformationStore = RBInformationStore(_rbInformationStoreAddress);
        rate = Rate(_rateAddress);
        sponseeAddress = _sponsee;
        multiSigAddress = _multiSig;
        accountAddressForSponseeAddress = _accountForSponseeAddress;
        balances[_to] = totalSupply;
    }

    /**
    @notice Receive ether from any EOA accounts. Amount of ether received in this function is distributed to 3 parts.
    One is a profitContainerAddress which is address of containerWallet to dividend to investor of Boost token.
    Another is an ownerAddress which is address of owner of REALBOOST site.
    The other is an sponseeAddress which is address of owner of this contract.
    */
    function() payable {
        // check condition
        require(isPayableEnabled);

        // check validation
        if(msg.value <= 0) { revert(); }

        // calculate support amount in USD
        uint supportedAmount = msg.value.mul(rate.ETH_USD_rate()).div(10**18);
        // if support is less than minimum => return money to supporter
        if(supportedAmount < minimumSupport) { revert(); }

        // calculate the ratio of Ether for distribution
        uint etherRatioForOwner = rbInformationStore.etherRatioForOwner();
        uint etherRatioForSponsee = uint(100).sub(etherRatioForOwner).sub(etherRatioForInvestor);

        /* divide Ether */
        // calculate
        uint etherForOwner = msg.value.mul(etherRatioForOwner).div(100);
        uint etherForInvestor = msg.value.mul(etherRatioForInvestor).div(100);
        uint etherForSponsee = msg.value.mul(etherRatioForSponsee).div(100);

        // get address
        address profitContainerAddress = rbInformationStore.profitContainerAddress();
        address companyWalletAddress = rbInformationStore.companyWalletAddress();

        // send Ether
        if(!profitContainerAddress.send(etherForInvestor)) { revert(); }
        if(!companyWalletAddress.send(etherForOwner)) { revert(); }
        if(!sponseeAddress.send(etherForSponsee)) { revert(); }

        // token amount is transfered to sender
        // 1.0 token = 1 cent, 1 usd = 100 cents
        // wei * US$/(10 ** 18 wei) * 100 cent/US$ * (10 ** 18(decimals))
        uint tokenAmount = msg.value.mul(rate.ETH_USD_rate());

        // add tokens
        balances[msg.sender] = balances[msg.sender].add(tokenAmount);

        // increase total supply
        totalSupply = totalSupply.add(tokenAmount);

        // check cap
        if(totalSupply > cap) { revert(); }

        // send exchange event
        LogExchange(msg.sender, this, tokenAmount);

        // send Event
        LogReceivedEther(msg.sender, this, msg.value, name);

        // tranfer event
        Transfer(address(0x0), msg.sender, tokenAmount);
    }

    /**
    @notice Change rbInformationStoreAddress.
    @param _address The address of new rbInformationStore
    */
    function setRBInformationStoreAddress(address _address) {
        // check sender is multisig address
        require(multiSigAddress == msg.sender);

        rbInformationStore = RBInformationStore(_address);

        LogSetRBInformationStoreAddress(_address);
    }

    /**
    @notice Change name.
    @param _name The new name of token
    */
    function setName(string _name) onlyOwner {
        name = _name;

        LogSetName(_name);
    }

    /**
    @notice Change symbol.
    @param _symbol The new symbol of token
    */
    function setSymbol(string _symbol) onlyOwner {
        symbol = _symbol;

        LogSetSymbol(_symbol);
    }

    /**
    @notice Mint new token amount.
    @param _address The address that new token amount is added
    @param _value The new amount of token
    */
    function mint(address _address, uint _value) {

        // check sender is multisig address
        require(accountAddressForSponseeAddress == msg.sender);

        // add tokens
        balances[_address] = balances[_address].add(_value);

        // increase total supply
        totalSupply = totalSupply.add(_value);

        // check cap
        if(totalSupply > cap) { revert(); }

        LogMint(_address, _value);

        // tranfer event
        Transfer(address(0x0), _address, _value);
    }

    /**
    @notice Increase cap.
    @param _value The amount of token that should be increased
    */
    function increaseCap(uint _value) onlyOwner {
        // change cap here
        cap = cap.add(_value);

        LogIncreaseCap(_value);
    }

    /**
    @notice Decrease cap.
    @param _value The amount of token that should be decreased
    */
    function decreaseCap(uint _value) onlyOwner {
        // check whether cap is lower than totalSupply or not
        if(totalSupply > cap.sub(_value)) { revert(); }
        // change cap here
        cap = cap.sub(_value);

        LogDecreaseCap(_value);
    }

    /**
    @notice Rollback transfer.
    @param _from The EOA address for rollback transfer
    @param _to The EOA address for rollback transfer
    @param _value The number of token for rollback transfer
    */
    function rollbackTransfer(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) {
        // check sender is multisig address
        require(multiSigAddress == msg.sender);

        balances[_to] = balances[_to].sub(_value);
        balances[_from] = balances[_from].add(_value);

        LogRollbackTransfer(_from, _to, _value);

        // tranfer event
        Transfer(_from, _to, _value);
    }

    /**
    @notice Transfer from msg.sender for downloading of content.
    @param _to The EOA address for buy content
    @param _value The number of token for buy content
    @param _paymentId The id of content which msg.sender want to buy
    */
    function buy(address _to, uint _value, uint _paymentId) {
        transfer(_to, _value);

        LogBuy(msg.sender, _to, _value, _paymentId);
    }

    /**
    @notice This method will change old multi signature address with new one.
    @param _newAddress new address is set
    */
    function changeMultiSigAddress(address _newAddress) {
        // check sender is multisig address
        require(multiSigAddress == msg.sender);

        multiSigAddress = _newAddress;

        LogChangeMultiSigAddress(_newAddress);

    }

    /**
    @notice This method will change old multi signature for sponsee address with new one.
    @param _newAddress new address is set
    */
    function changeAccountAddressForSponseeAddress(address _newAddress) {
        // check sender is account for changing sponsee address
        require(accountAddressForSponseeAddress == msg.sender);

        accountAddressForSponseeAddress = _newAddress;

        LogChangeAccountAddressForSponseeAddress(_newAddress);

    }

    /**
    @notice This method will change old sponsee address with new one.
    @param _newAddress new address is set
    */
    function changeSponseeAddress(address _newAddress) {
        // check sender is account for changing sponsee address
        require(accountAddressForSponseeAddress == msg.sender);

        sponseeAddress = _newAddress;

        LogChangeSponseeAddress(_newAddress);

    }

    /**
    @notice This method will change isPayableEnabled flag.
    */
    function changeIsPayableEnabled() {
        // check sender is multisig address
        require(multiSigAddress == msg.sender);

        isPayableEnabled = !isPayableEnabled;

        LogChangeIsPayableEnabled();

    }
}