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// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.24;

/// @title AliaNotarizer
/// @notice A contract for notarizing hashes by an authorized wallet
/// @dev This contract allows an authorized wallet to notarize hashes and transfer authorization
contract AliaNotarizer {
    /// @notice The address of the currently authorized wallet
    address public authorizedWallet;
    
    /// @notice Emitted when a hash is notarized
    /// @param hash The notarized hash
    /// @param sender The address that notarized the hash
    /// @param timestamp The block timestamp when the hash was notarized
    event NotarizedHash(bytes32 indexed hash, address indexed sender, uint256 timestamp);

    /// @notice Initializes the contract with an authorized wallet
    /// @param _authorizedWallet The address to be set as the initial authorized wallet
    constructor(address _authorizedWallet) {
        require(
            _authorizedWallet != address(0),
            "Authorized wallet is the zero address"
        );
        authorizedWallet = _authorizedWallet;
    }

    /// @notice Notarizes a given hash
    /// @dev Only the authorized wallet can call this function
    /// @param hash The hash to be notarized
    function notarizeHash(bytes32 hash) external {
        require(
            msg.sender == authorizedWallet,
            "Only authorized wallet can notarize"
        );
        emit NotarizedHash(hash, msg.sender, block.timestamp);
    }

    /// @notice Changes the authorized wallet
    /// @dev Only the current authorized wallet can call this function
    /// @param _authorizedWallet The address of the new authorized wallet
    function setAuthorizedWallet(address _authorizedWallet) external {
        require(
            msg.sender == authorizedWallet,
            "Only authorized wallet can set authorized wallet"
        );
        require(
            _authorizedWallet != address(0),
            "New authorized wallet is the zero address"
        );
        authorizedWallet = _authorizedWallet;
    }
}

{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"_authorizedWallet","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"hash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"NotarizedHash","type":"event"},{"inputs":[],"name":"authorizedWallet","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"notarizeHash","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_authorizedWallet","type":"address"}],"name":"setAuthorizedWallet","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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