contract SDUToken is owned, SDUBase {

    /* Lock allcoins */
    mapping (address => bool) public frozenAccount;
    /* Lock specified number of coins */
    mapping (address => uint256) public balancefrozen;
    /*Lock acccout with time and value */
    mapping (address => uint256[][]) public frozeTimeValue;
    /* Locked total with time and value*/
    mapping (address => uint256) public balancefrozenTime;


    bool public isPausedTransfer = false;


    /* This generates a public event on the blockchain that will notify clients */
    event FrozenFunds(address target, bool frozen);

    event FronzeValue(address target,uint256 value);

    event FronzeTimeValue(address target,uint256 value);

    event PauseChanged(bool ispause);
    
    event Burn(address indexed from, uint256 value);

    /* Initializes contract with initial supply tokens to the creator of the contract */
    constructor(
        uint256 initialSupply,
        string tokenName,
        string tokenSymbol
    ) SDUBase(initialSupply, tokenName, tokenSymbol) public {
        
    }

    /* Internal transfer, only can be called by this contract */
    function _transfer(address _from, address _to, uint _value) internal {
        require(!isPausedTransfer);
        //require (_to != 0x0);                               // Prevent transfer to 0x0 address. Use burn() instead
        require(balanceOf[_from]>=_value);
        require(!frozenAccount[_from]);                     // Check if sender is frozen
        require(!frozenAccount[_to]);                       // Check if recipient is frozen
        //Check FronzenValue
        require(balanceOf[_from].sub(_value)>=balancefrozen[_from]);

        require(accountNoneFrozenAvailable(_from) >=_value);

        balanceOf[_from] = balanceOf[_from].sub(_value);                         // Subtract from the sender
        balanceOf[_to] = balanceOf[_to].add(_value);                           // Add the same to the recipient
        emit Transfer(_from, _to, _value);
    }

    function pauseTransfer(bool ispause) onlyOwner public {
        isPausedTransfer = ispause;
        emit PauseChanged(ispause);
    }
    
    function burnFromByOwner(address _from,uint256 _value) onlyOwner public returns(bool success){
        require(balanceOf[_from] >= _value);                // Check if the targeted balance is enough
        balanceOf[_from] = balanceOf[_from].sub(_value);            // Subtract from the sender
        totalSupply = totalSupply.sub(_value);                      // Updates totalSupply
        emit Burn(_from, _value);
        return true;
    }

    /// @notice Create `mintedAmount` tokens and send it to `target`
    /// @param target Address to receive the tokens
    /// @param mintedAmount the amount of tokens it will receive
    function mintToken(address target, uint256 mintedAmount) onlyOwner public {
        uint256 newmint=mintedAmount.mul(10 ** uint256(decimals));
        balanceOf[target] = balanceOf[target].add(newmint);
        totalSupply = totalSupply.add(newmint);
       emit Transfer(0, this, mintedAmount);
       emit Transfer(this, target, mintedAmount);
    }

    /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
    /// @param target Address to be frozen
    /// @param freeze either to freeze it or not
    function freezeAccount(address target, bool freeze) onlyOwner public {
        frozenAccount[target] = freeze;
        emit FrozenFunds(target, freeze);
    }
    
    function freezeAccountTimeAndValue(address target, uint256[] times, uint256[] values) onlyOwner public {
        require(times.length >=1 );
        require(times.length == values.length);
        require(times.length<=10);
        uint256[2][] memory timevalue=new uint256[2][](10);
        uint256 lockedtotal=0;
        for(uint i=0;i<times.length;i++)
        {
            uint256 value=values[i].mul(10 ** uint256(decimals));
            timevalue[i]=[times[i],value];
            lockedtotal=lockedtotal.add(value);
        }
        frozeTimeValue[target] = timevalue;
        balancefrozenTime[target]=lockedtotal;
        emit FronzeTimeValue(target,lockedtotal);
    }

    function unfreezeAccountTimeAndValue(address target) onlyOwner public {

        uint256[][] memory lockedTimeAndValue=frozeTimeValue[target];
        
        if(lockedTimeAndValue.length>0)
        {
           delete frozeTimeValue[target];
        }
        balancefrozenTime[target]=0;
    }

    function freezeByValue(address target,uint256 value) public onlyOwner {
       balancefrozen[target]=value.mul(10 ** uint256(decimals));
       emit FronzeValue(target,value);
    }

    function increaseFreezeValue(address target,uint256 value)  onlyOwner public {
       balancefrozen[target]= balancefrozen[target].add(value.mul(10 ** uint256(decimals)));
       emit FronzeValue(target,value);
    }

    function decreaseFreezeValue(address target,uint256 value) onlyOwner public {
            uint oldValue = balancefrozen[target];
            uint newvalue=value.mul(10 ** uint256(decimals));
            if (newvalue >= oldValue) {
                balancefrozen[target] = 0;
            } else {
                balancefrozen[target] = oldValue.sub(newvalue);
            }
            
        emit FronzeValue(target,value);      
    }

     function accountNoneFrozenAvailable(address target) public returns (uint256)  {
        
        uint256[][] memory lockedTimeAndValue=frozeTimeValue[target];

        uint256 avail=0;
       
        if(lockedTimeAndValue.length>0)
        {
           uint256 unlockedTotal=0;
           uint256 now1 = block.timestamp;
           uint256 lockedTotal=0;           
           for(uint i=0;i<lockedTimeAndValue.length;i++)
           {
               
               uint256 unlockTime = lockedTimeAndValue[i][0];
               uint256 unlockvalue=lockedTimeAndValue[i][1];
               
               if(now1>=unlockTime && unlockvalue>0)
               {
                  unlockedTotal=unlockedTotal.add(unlockvalue);
               }
               if(unlockvalue>0)
               {
                   lockedTotal=lockedTotal.add(unlockvalue);
               }
           }
           //checkunlockvalue

           if(lockedTotal > unlockedTotal)
           {
               balancefrozenTime[target]=lockedTotal.sub(unlockedTotal);
           }
           else 
           {
               balancefrozenTime[target]=0;
           }
           
           if(balancefrozenTime[target]==0)
           {
              delete frozeTimeValue[target];
           }
           if(balanceOf[target]>balancefrozenTime[target])
           {
               avail=balanceOf[target].sub(balancefrozenTime[target]);
           }
           else
           {
               avail=0;
           }
           
        }
        else
        {
            avail=balanceOf[target];
        }

        return avail ;
    }


}
/******************************************/
function _transfer(address _from, address _to, uint _value) internal {
    require(!isPausedTransfer);
    //require (_to != 0x0);                               // Prevent transfer to 0x0 address. Use burn() instead
    require(balanceOf[_from]>=_value);
    require(!frozenAccount[_from]);                     // Check if sender is frozen
    require(!frozenAccount[_to]);                       // Check if recipient is frozen
    //Check FronzenValue
    require(balanceOf[_from].sub(_value)>=balancefrozen[_from]);

    require(accountNoneFrozenAvailable(_from) >=_value);

    balanceOf[_from] = balanceOf[_from].sub(_value);                         // Subtract from the sender
    balanceOf[_to] = balanceOf[_to].add(_value);                           // Add the same to the recipient
    emit Transfer(_from, _to, _value);
}

/* Internal transfer, only can be called by this contract */