MamboCoin

mambocoin.sol

pragma solidity ^0.4.15;

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  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);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  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);
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
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) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    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;
  }

}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {

  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public constant returns (uint256 balance) {
    return balances[_owner];
  }
}

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) allowed;

  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amout of tokens to be transfered
   */
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
    uint256 _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // require (_value <= _allowance);

    balances[_to] = balances[_to].add(_value);
    balances[_from] = balances[_from].sub(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Aprove the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {

    // To change the approve amount you first have to reduce the addresses`
    //  allowance to zero by calling `approve(_spender, 0)` if it is not
    //  already 0 to mitigate the race condition described here:
    //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    require((_value == 0) || (allowed[msg.sender][_spender] == 0));

    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifing the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }

}

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {

  address public owner;

  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) onlyOwner public {
    require(newOwner != address(0));
    owner = newOwner;
  }

}

/**
 * @title Mintable token
 * @dev Simple ERC20 Token example, with mintable token creation
 * @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
 */

contract MintableToken is StandardToken, Ownable {

  event Mint(address indexed to, uint256 amount);

  event MintFinished();

  bool public mintingFinished = false;

  /** List of agents that are allowed to create new tokens */
  mapping (address => bool) public mintAgents;

  event MintingAgentChanged(address addr, bool state);
  event Minted(address receiver, uint256 amount);

  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  modifier onlyMintAgent() {
    // Only crowdsale contracts are allowed to mint new tokens
    require(mintAgents[msg.sender]);
    _;
  }

  /**
   * Owner can allow a crowdsale contract to mint new tokens.
   */
  function setMintAgent(address addr, bool state) onlyOwner canMint public {
    mintAgents[addr] = state;
    emit MintingAgentChanged(addr, state);
  }

  /**
   * @dev Function to mint tokens
   * @param _to The address that will recieve the minted tokens.
   * @param _amount The amount of tokens to mint.
   * @return A boolean that indicates if the operation was successful.
   */
  function mint(address _to, uint256 _amount) onlyMintAgent canMint public returns (bool) {
    totalSupply = totalSupply.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() onlyMintAgent public returns (bool) {
    mintingFinished = true;
    emit MintFinished();
    return true;
  }

}

contract MamboCoin is MintableToken {

    string public constant name = "Mambo Coin";

    string public constant symbol = "MBC";

    uint32 public constant decimals = 18;

    constructor(uint256 _amount) public {
      _amount = _amount * 1 ether;
      totalSupply = totalSupply.add(_amount);
      balances[owner] = balances[owner].add(_amount);
      emit Mint(owner, _amount);
    }
}

interface token {
  function mint(address _to, uint256 _amount) external;
  function balanceOf(address _owner) external returns (uint256);
}

contract Crowdsale is Ownable {

    using SafeMath for uint256;

    address multisig;
    address marketing;

    uint256 restrictedPercent;

    address restricted;

    uint256 minBuy;
    uint256 maxOwnerHas;

    token public tokenReward;

    uint256 rate;

    uint256 startPrivateSale;
    uint256 endPrivateSale;
    uint256 startPreICO;
    uint256 endPreICO;
    uint256 startICO;
    uint256 endICO;

    constructor(address addressOfTokenUsedAsReward, address addressOfMarketing) public {
      multisig = owner;
      marketing = addressOfMarketing;
      restricted = owner;
      restrictedPercent = 25;
      rate = 2500;
      minBuy = 100 * 1 ether;
      maxOwnerHas = 30937500 * 1 ether;
      tokenReward = token(addressOfTokenUsedAsReward);

      startPrivateSale = now;
      endPrivateSale = now + 25 * 1 minutes;  // 1536624000; // (2018-09-11 00:00:00)
      startPreICO = now + 30 * 1 minutes;     // 1539129600; // (2018-10-10 00:00:00)
      endPreICO = now + 55 * 1 minutes;       // 1541894400; // (2018-11-11 00:00:00)
      startICO = now + 60 * 1 minutes;        // 1543622400; // (2018-12-01 00:00:00)
      endICO = now + 90 * 1 minutes;          // 1545436800; // (2018-12-22 00:00:00)
    }

    modifier saleIsOn() {
      require(now > startPrivateSale && now < endICO);
      _;
    }

   function createTokens() saleIsOn public payable {
        uint256 tokens = rate.mul(msg.value);
        uint256 bonusTokens = 0;
        uint256 period = 0;

        require(tokens >= minBuy);
        uint256 tokensTotal = tokens.add(tokenReward.balanceOf(msg.sender));
        require(tokensTotal <= maxOwnerHas);

        multisig.transfer(msg.value.div(2));
        marketing.transfer(msg.value.div(2));

        // bonus for private sales
        if (now > startPrivateSale && now < endPrivateSale) {
            if (msg.value > 160 * 1 ether) {
                bonusTokens = tokens.div(100).mul(35); // 35/100 = 35%
            } else if (msg.value > 245 * 1 ether) {
                bonusTokens = tokens.div(10).mul(4); // 4/10 = 40/100 = 40%
            } else if (msg.value > 160 * 1 ether) {
                bonusTokens = tokens.div(2); // 1/2 = 50%
            }
        }
        // bonuses for pre-ICO
        if (now > startPreICO && now < endPreICO) {
            period = endPreICO - startPreICO;
            if (now < startPreICO + period.div(4)) {
              bonusTokens = tokens.div(10).mul(3); // 3/10 = 30/100 = 30%
            } else if(now >= startPreICO + period.div(4) && now < startPreICO + period.div(4).mul(2)) {
              bonusTokens = tokens.div(4); // 1/4 = 25/100 = 25%
            } else if(now >= startPreICO + period.div(4).mul(2) && now < startPreICO + period.div(4).mul(3)) {
              bonusTokens = tokens.div(5); // 1/5 = 20/100 = 20%
            } else if(now >= startPreICO + (period * 1 days).div(4).mul(3)) {
                bonusTokens = tokens.div(100).mul(15); // 15/100 = 15%
            }
        }
        // bonuses for ICO
        if (now > startICO && now < endICO) {
            period = endICO - startICO;
            if (now < startICO + (period * 1 days).div(3)) {
              bonusTokens = tokens.div(10); // 1/10 = 10/100 = 10%
            } else if(now >= startICO + (period * 1 days).div(3) && now < startICO + (period * 1 days).div(3).mul(2)) {
              bonusTokens = tokens.div(1000).mul(75); // 75/1000 = 7.5/100 =7.5%
            } else if(now >= startICO + (period * 1 days).div(3).mul(2)) {
              bonusTokens = tokens.div(20); // 1/20 = 5/100 = 5%
            }
        }
        tokens = tokens.add(bonusTokens);
        tokenReward.mint(msg.sender, tokens);

        uint256 restrictedTokens = tokens.mul(restrictedPercent).div(100 - restrictedPercent);
        tokenReward.mint(restricted, restrictedTokens);
    }

    function() external payable {
        createTokens();
    }
}