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1_HotelGreeting.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/// @title HotelGreeting
/// @author Connor Phillips (blockchain@connorphillips.com)
/// @notice Purpose of the contract is to leave a greeting to a guest who has arrived
/// @dev All function calls are currently implemented without side effects
contract HotelGreeting {
    
    struct Guest { 
        string guestName;
        uint guests;
    } // Struct
    Guest public guest;

    enum Status { 
        Booked,
        Staying,
        Departed
    } // Enum
    
    Status public status;
    
    string private greeting; // State variable
    
    /// @notice Display the greeting for a specific guest
    function greet() public view returns (string memory, string memory, uint, Status) {
        return (
            greeting,
            guest.guestName,
            guest.guests,
            status
        );
    }

    /// @notice Setting the greeting for the hotel guest and their current status
    /// @param _greeting Greeting for guest
    /// @param _guestName Name of guest
    /// @param _guests Number of guests staying in the room
    /// @param _status The enum status of the guest at the moment
    function setGreeting(string memory _greeting, string memory _guestName, uint _guests, Status _status) public {
        greeting = _greeting;
        guest = Guest(_guestName, _guests);
        status = Status(_status);
    }
}