contract SMARTRealty is StandardToken{
    //using SafeMath for uint256;
    
    string public name = "SMARTRealty";
    string public symbol = "RLTY";
    uint8 public decimals = 8;
    string public version = "1.0.0";

    uint public constant RATE = 1250; //1 RLTY = 0.0008 ETH
    address public owner;
    
    // amount of raised money in wei
    uint256 weiRaised;    
    
    struct ICOPhase {
        uint fromTimestamp; //ico starting timestamp
        uint toTimestamp; // ico end timestamp
        uint256 minimum; // Minimum purchase for each phase
        uint256 fundRaised;
        uint bonus; // In percent, ie 10 is a 10% for bonus
        uint totalNumberOfTokenPurchase; //number of token allowed for each phase
    }
    
    mapping(uint => ICOPhase) phases;
    uint icoPhaseCounter = 0;
    
    enum IcoStatus{Pending, Active, Inactive}
    IcoStatus status;    
    
    function SMARTRealty() public payable {
        
        owner = msg.sender;
        
        totalSupply = 500000000 * (10**uint256(decimals));          //500 million initial token creation
        
        //Tokens to creator wallet - For distribution        
        balances[owner] = 200000000 * (10**uint256(decimals)); //40% for public distribution
        
        //Initial Token Distribution
        balances[0xF9568bd772C9B517193275b3C2E0CDAd38E586bB] = 50000000 * (10**uint256(decimals)); //10% Development, Executive, and Advisory Teams
        balances[0x07ADB1D9399Bd1Fa4fD613D3179DFE883755Bb13] = 50000000 * (10**uint256(decimals)); //10% SMARTRealty Economy
        balances[0xd35909DbeEb5255D65b1ea14602C7f00ce3872f6] = 50000000 * (10**uint256(decimals)); //10% Marketing
        balances[0x9D2Fe4D5f1dc4FcA1f0Ea5f461C9fAA5D09b9CCE] = 50000000 * (10**uint256(decimals)); //10% SMARTMortgages
        balances[0x8Bb41848B6dD3D98b8849049b780dC3549568c89] = 25000000 * (10**uint256(decimals)); //5% Admin
        balances[0xC78DF195DE5717FB15FB3448D5C6893E8e7fB254] = 25000000 * (10**uint256(decimals)); //5% Contractors
        balances[0x4690678926BCf9B30985c06806d4568C0C498123] = 25000000 * (10**uint256(decimals)); //5% Legal
        balances[0x08AF803F0F90ccDBFCe046Bc113822cFf415e148] = 20000000 * (10**uint256(decimals)); //4% Bounties and Giveaways
        balances[0x8661dFb67dE4E5569da9859f5CB4Aa676cd5F480] = 5000000 * (10**uint256(decimals)); //1% Charitable Use
        
    }
    
    //Set ICO Status
    function activateICOStatus() public {
        status = IcoStatus.Active;
    }    
    
    //Set each Phase of your ICO here
    function setICOPhase(uint _fromTimestamp, uint _toTimestamp, uint256 _min, uint _bonus) onlyAdmin public returns (uint ICOPhaseId) {
        uint icoPhaseId = icoPhaseCounter++;
        ICOPhase storage ico = phases[icoPhaseId];
        ico.fromTimestamp = _fromTimestamp;
        ico.toTimestamp = _toTimestamp;
        ico.minimum = _min;
        ico.bonus = _bonus;
        //ico.totalNumberOfTokenPurchase = _numOfToken;

        phases[icoPhaseId] = ico;

        return icoPhaseId;
    }
    
    //Get current ICO Phase
    function getCurrentICOPhaseBonus() public view returns (uint _bonus, uint icoPhaseId) {
        require(icoPhaseCounter > 0);
        uint currentTimestamp = block.timestamp; //Get the current block timestamp

        for (uint i = 0; i < icoPhaseCounter; i++) {
            
            ICOPhase storage ico = phases[i];

            if (currentTimestamp >= ico.fromTimestamp && currentTimestamp <= ico.toTimestamp) {
                return (ico.bonus, i);
            }
        }

    }
    
    // Override this method to have a way to add business logic to your crowdsale when buying
    function getTokenAmount(uint256 weiAmount) internal returns(uint256 token, uint id) {
        var (bonus, phaseId) = getCurrentICOPhaseBonus();       //get current ICO phase information
        uint256 numOfTokens = weiAmount.safeMul(RATE);
        uint256 bonusToken = (bonus / 100) * numOfTokens;
        
        uint256 totalToken = numOfTokens.safeAdd(bonusToken);               //Total tokens to transfer
        return (totalToken, phaseId);
    }    
    
    // low level token purchase function
    function _buyTokens(address beneficiary) public payable {
        require(beneficiary != address(0) && beneficiary != owner);
        
        uint256 weiAmount = msg.value;
        
        // calculate token amount to be created
        var (tokens, phaseId) = getTokenAmount(weiAmount);
        
        //update the current ICO Phase
        ICOPhase storage ico = phases[phaseId]; //get phase
        ico.fundRaised = ico.fundRaised.safeAdd(msg.value); //Update fundRaised for a particular phase
        phases[phaseId] = ico;
        
        // update state
        weiRaised = weiRaised.safeAdd(weiAmount);
        
        _transferToken(beneficiary, tokens);
        TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
        
        forwardFunds();
    }
    
    function _transferToken(address _to, uint256 _amount) public returns (bool){
        balances[owner] = balances[owner].safeSub(_amount);
        balances[_to] = balances[_to].safeAdd(_amount);
        Transfer(address(0), _to, _amount);
        return true;        
    }
    
    // send ether to the fund collection wallet
    // override to create custom fund forwarding mechanisms
    function forwardFunds() internal {
        owner.transfer(msg.value);
    }    

    // fallback function can be used to buy tokens
    function () external payable {
        _buyTokens(msg.sender);
    } 
    
    
    event TokenPurchase(address _sender, address _beneficiary, uint256 weiAmount, uint256 tokens);
    
}
function () external payable {
    _buyTokens(msg.sender);
} 

// fallback function can be used to buy tokens