// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

contract HologramCheckIn is Ownable {
    // Mapping from address to number of check-ins
    mapping(address => uint256) public checkInCounts;

    // Mapping from address to the last check-in timestamp
    mapping(address => uint256) public lastCheckInTimestamps;

    // Mapping for daily operations count
    mapping(address => uint256) public dailyOperationsCount;

    // Protocol fee for daily operations
    uint256 public protocolFee;

    // Event to emit when a check-in occurs
    event CheckedIn(address indexed user, uint256 date);

    // Event for daily operations
    event DailyOperations(address indexed user, uint256 date);

    constructor() {
    }

    /**
     * @dev Check in function for daily use.
     */
    function checkIn() public {
        require(
            !hasCheckedInToday(msg.sender),
            "You have already checked in today."
        );
        
        // Update the last check-in timestamp to the start of today
        lastCheckInTimestamps[msg.sender] = block.timestamp - (block.timestamp % 86400);
        
        // Increment the check-in count
        checkInCounts[msg.sender] += 1;
        
        emit CheckedIn(msg.sender, block.timestamp);
    }

    /**
     * @dev Perform daily operations, subject to a protocol fee.
     */
    function dailyOperations() public payable {
        require(msg.value >= protocolFee, "Insufficient fee");

        // Increment the daily operations count for sender
        dailyOperationsCount[msg.sender] += 1;

        emit DailyOperations(msg.sender, block.timestamp);
    }


    /**
     * @dev Set the protocol fee for daily operations.
     * @param _fee The new fee amount.
     */
    function setProtocolFee(uint256 _fee) public onlyOwner {
        protocolFee = _fee;
    }


    /**
     * @dev Withdraw contract balance to the owner's address.
     * Useful for withdrawing the accumulated protocol fees.
     */
    function withdraw() public onlyOwner {
        payable(owner()).transfer(address(this).balance);
    }

    /**
     * @dev Function to check if the user has already checked in today.
     * @return bool Returns true if the user has checked in today.
     */
    function hasCheckedInToday(address user) public view returns (bool) {
        return lastCheckInTimestamps[user] == block.timestamp - (block.timestamp % 86400);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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);
    }
}

{
  "compilationTarget": {
    "contracts/HologramCheckIn.sol": "HologramCheckIn"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}