// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "@openzeppelin/contracts@4.9.3/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC20/extensions/ERC20Pausable.sol";
import "@openzeppelin/contracts@4.9.3/access/AccessControl.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC20/extensions/ERC20Votes.sol";
import "@openzeppelin/contracts@4.9.3/token/ERC20/extensions/draft-ERC20Permit.sol";

contract TravelNetworkWorldToken is ERC20, ERC20Burnable, ERC20Pausable, AccessControl, ERC20Permit, ERC20Votes {
    bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");
    uint256 private constant TOTAL_SUPPLY = 100_000_000 * 10 ** 18;
    address private constant OWNER_ADDRESS = 0x5bD25Ea6e56b3C1a39Fc00d2cC344B9d3a6C4FB1;

    constructor() ERC20("TravelNetworkWorldToken", "TNWT") ERC20Permit("TravelNetworkWorldToken") {
        _setupRole(DEFAULT_ADMIN_ROLE, OWNER_ADDRESS);
        _setupRole(ADMIN_ROLE, OWNER_ADDRESS);
        _mint(address(this), TOTAL_SUPPLY);
        _allocateTokens();
    }
    function _allocateTokens() internal {
        _transfer(address(this), OWNER_ADDRESS, 20_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 5_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 15_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 20_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 25_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 10_000_000 * 10 ** 18);
        _transfer(address(this), OWNER_ADDRESS, 5_000_000 * 10 ** 18);
    }
    function pause() public onlyRole(ADMIN_ROLE) { _pause(); }
    function unpause() public onlyRole(ADMIN_ROLE) { _unpause(); }
    function mint(address to, uint256 amount) public onlyRole(ADMIN_ROLE) { _mint(to, amount); }
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal override(ERC20, ERC20Pausable) { super._beforeTokenTransfer(from, to, amount); }
    function _afterTokenTransfer(address from, address to, uint256 amount) internal override(ERC20, ERC20Votes) { super._afterTokenTransfer(from, to, amount); }
    function _mint(address to, uint256 amount) internal override(ERC20, ERC20Votes) { super._mint(to, amount); }
    function _burn(address account, uint256 amount) internal override(ERC20, ERC20Votes) { super._burn(account, amount); }
}