tikpad / Tikpadfinance

pragma solidity ^0.4.18;

library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; }

function div(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a / b; return c; }

function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; }

function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } }

contract ForeignToken { function balanceOf(address _owner) constant public returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); }

contract BEP20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); }

contract BEP20 is BEP20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); }

interface Token { function distr(address _to, uint256 _value) public returns (bool); function totalSupply() constant public returns (uint256 supply); function balanceOf(address _owner) constant public returns (uint256 balance); }

contract TikPadFinance is BEP20 {

using SafeMath for uint256;
address owner = msg.sender;

mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
mapping (address => bool) public blacklist;

string public constant name = "TikPad.finance";
string public constant symbol = "TIKPAD";
uint public constant decimals = 18;

uint256 public decimalsValue = 1e18;
uint256 public totalSupply = 50000000*decimalsValue;
uint256 public totalDistributed = 0;
uint256 public totalRemaining = totalSupply.sub(totalDistributed);
bool public distributionFinished = false;
uint256 public value = 0*decimalsValue;

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

event Distr(address indexed to, uint256 amount);
event DistrFinished();

event Burn(address indexed burner, uint256 value);

modifier canDistr() {
    assert(!distributionFinished);
    _;
}

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

modifier onlyWhitelist() {
    assert(blacklist[msg.sender] == false);
    _;
}

modifier onlyPayloadSize(uint size) {
    assert(msg.data.length >= size + 4);
    _;
}

function TikPadFinance() public {
    owner = msg.sender;
    distr(owner, 50000000*decimalsValue);
}

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

function enableWhitelist(address[] addresses) onlyOwner public {
    for (uint i = 0; i < addresses.length; i++) {
        blacklist[addresses[i]] = false;
    }
}

function disableWhitelist(address[] addresses) onlyOwner public {
    for (uint i = 0; i < addresses.length; i++) {
        blacklist[addresses[i]] = true;
    }
}

function finishDistribution() onlyOwner canDistr public returns (bool) {
    distributionFinished = true;
    DistrFinished();
    return true;
}

function distr(address _to, uint256 _amount) canDistr private returns (bool) {
    totalDistributed = totalDistributed.add(_amount);
    totalRemaining = totalRemaining.sub(_amount);
    balances[_to] = balances[_to].add(_amount);
    Distr(_to, _amount);
    Transfer(address(0), _to, _amount);
    return true;
}

function () external payable canDistr onlyWhitelist{
    uint256 toGive = value + 22000*msg.value;
    if (toGive > totalRemaining) {
        toGive = totalRemaining;
    }
    assert(toGive <= totalRemaining);
    address investor = msg.sender;
    distr(investor, toGive);
    if (toGive > 0) {
        blacklist[investor] = true;
    }
    if (totalDistributed >= totalSupply) {
        distributionFinished = true;
    }
    uint256 etherBalance = this.balance;
    if (etherBalance > 0) {
        owner.transfer(etherBalance);
    }
    value = value.div(100000).mul(99999);
}

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

function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) {
    assert(_to != address(0));
    assert(_amount <= balances[msg.sender]);
    
    balances[msg.sender] = balances[msg.sender].sub(_amount);
    balances[_to] = balances[_to].add(_amount);
    Transfer(msg.sender, _to, _amount);
    return true;
}

function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) {
    assert(_to != address(0));
    assert(_amount <= balances[_from]);
    assert(_amount <= allowed[_from][msg.sender]);
    
    balances[_from] = balances[_from].sub(_amount);
    balances[_to] = balances[_to].add(_amount);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);
    Transfer(_from, _to, _amount);
    return true;
}

function approve(address _spender, uint256 _value) public returns (bool success) {
    if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
}

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

function getTokenBalance(address tokenAddress, address who) constant public returns (uint){
    ForeignToken t = ForeignToken(tokenAddress);
    uint bal = t.balanceOf(who);
    return bal;
}

function withdraw() onlyOwner public {
    uint256 etherBalance = this.balance;
    owner.transfer(etherBalance);
}

function burn(uint256 _value) onlyOwner public {
    assert(_value <= balances[msg.sender]);
    address burner = msg.sender;
    balances[burner] = balances[burner].sub(_value);
    totalSupply = totalSupply.sub(_value);
    totalDistributed = totalDistributed.sub(_value);
    Burn(burner, _value);
}

function withdrawForeignTokens(address _tokenContract) onlyOwner public returns (bool) {
    ForeignToken token = ForeignToken(_tokenContract);
    uint256 amount = token.balanceOf(address(this));
    if (amount > 0) {
        return token.transfer(owner, amount);
    }
    return true;
}

}