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49/// ** INITIALIZER **
50
51function initialize(address _mpc) public virtual initializer {
52    __Ownable_init();
53
54    newMPC = _mpc;
55    newMPCEffectiveTime = block.timestamp;
56}
57
58/// ** VIEW functions **
59
60/**
61 * @notice Returns MPC
62 */
63function mpc() public view returns (address) {
64    if (block.timestamp >= newMPCEffectiveTime) {
65        return newMPC;
66    }
67
68    return oldMPC;
69}
70
71/**
72 * @notice Returns chain ID of block
73 */
74function currentChainId() public view returns (uint256) {
75    return block.chainid;
76}
77
78/// ** MPC functions **
79
80/**
81 * @notice Changes MPC
82 */
83function changeMPC(address _newMPC) external onlyMPC returns (bool) {
84    require(_newMPC != address(0), "BridgeV2: address(0x0)");
85    oldMPC = mpc();
86    newMPC = _newMPC;
87    newMPCEffectiveTime = block.timestamp;
88    emit LogChangeMPC(
89        oldMPC,
90        newMPC,
91        newMPCEffectiveTime,
92        currentChainId()
93    );
94    return true;
95}
96
97/**
98* @notice Get commission by MPC
99 */
100function getCommissionByMPC(address token, address to, uint256 amount) external onlyMPC returns (bool) {
101    TransferHelper.safeTransfer(token, to, amount);
102    return true;
103}
104
105/**
106 * @notice Changes MPC (onlyOwner)
107 */
108function changeMPCByOwner(address _newMPC) external onlyOwner returns (bool) {
109    require(_newMPC != address(0), "BridgeV2: address(0x0)");
110    oldMPC = mpc();
111    newMPC = _newMPC;
112    newMPCEffectiveTime = block.timestamp;
113    emit LogChangeMPC(
114        oldMPC,
115        newMPC,
116        newMPCEffectiveTime,
117        currentChainId()
118    );
119    return true;
120}