pragma solidity ^0.5.17;
pragma experimental ABIEncoderV2;

import "../../openzeppelin/Ownable.sol";
import "../../interfaces/IERC20.sol";
import "../Staking/Staking.sol";
import "../IFeeSharingProxy.sol";
import "./IVesting.sol";
import "../ApprovalReceiver.sol";
import "./VestingStorage.sol";
import "../../proxy/Proxy.sol";

/**
 * @title Team Vesting Contract.
 *
 * @notice A regular vesting contract, but the owner (governance) is able to
 * withdraw earlier without a slashing.
 *
 * @dev Vesting contracts shouldn't be upgradable,
 * use Proxy instead of UpgradableProxy.
 * */
contract TeamVesting is VestingStorage, Proxy {
	/**
	 * @notice Setup the vesting schedule.
	 * @param _logic The address of logic contract.
	 * @param _SOV The SOV token address.
	 * @param _tokenOwner The owner of the tokens.
	 * @param _cliff The time interval to the first withdraw in seconds.
	 * @param _duration The total duration in seconds.
	 * */
	constructor(
		address _logic,
		address _SOV,
		address _stakingAddress,
		address _tokenOwner,
		uint256 _cliff,
		uint256 _duration,
		address _feeSharingProxy
	) public {
		require(_SOV != address(0), "SOV address invalid");
		require(_stakingAddress != address(0), "staking address invalid");
		require(_tokenOwner != address(0), "token owner address invalid");
		require(_duration >= _cliff, "duration must be bigger than or equal to the cliff");
		require(_feeSharingProxy != address(0), "feeSharingProxy address invalid");

		_setImplementation(_logic);
		SOV = IERC20(_SOV);
		staking = Staking(_stakingAddress);
		require(_duration <= staking.MAX_DURATION(), "duration may not exceed the max duration");
		tokenOwner = _tokenOwner;
		cliff = _cliff;
		duration = _duration;
		feeSharingProxy = IFeeSharingProxy(_feeSharingProxy);
	}
}