// File: contracts/depositHandler.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

import "@openzeppelin/contracts/access/Ownable.sol";

contract depositHandler is Ownable {
    address private treasury;
    bytes32 private constant ADMIN = keccak256(abi.encodePacked("ADMIN"));
    mapping(bytes32 => mapping(address => bool)) public roles;
    event Received(
        uint256 indexed amount,
        address indexed payee,
        uint256 indexed hash
    );

    constructor(address payable _newAdmin) {
        _grantRole(ADMIN, _newAdmin);
        _grantRole(ADMIN, msg.sender);
        treasury = _newAdmin;
    }

    receive() external payable {}

    function deposit(uint256 _amount, uint256 hash) external payable {
        require(_amount > 0 && msg.value == _amount, "Invalid Amount sent.");
        payable(treasury).transfer(_amount);
        emit Received(_amount, msg.sender, hash);
    }

    function setTreasury(address _treasury) external onlyRole(ADMIN) {
        treasury = _treasury;
    }

    modifier onlyRole(bytes32 _role) {
        require(roles[_role][msg.sender], "Not authorized.");
        _;
    }

    function _grantRole(bytes32 _role, address _account) internal {
        roles[_role][_account] = true;
    }

    function grantRole(bytes32 _role, address _account)
        external
        onlyRole(ADMIN)
    {
        _grantRole(_role, _account);
    }

    function _revokeRole(bytes32 _role, address _account) internal {
        roles[_role][_account] = false;
    }

    function revokeRole(bytes32 _role, address _account)
        external
        onlyRole(ADMIN)
    {
        _revokeRole(_role, _account);
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}