// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title Errors Library
library Errors {

    ////////////////////////////////////////////////////////////////////////////
    //                                Common                                  //
    ////////////////////////////////////////////////////////////////////////////

    /// @notice The caller is not the owner of the contract.
    error OwnerInvalid();

    ////////////////////////////////////////////////////////////////////////////
    //                                ERC20                                   //
    ////////////////////////////////////////////////////////////////////////////

    /// @notice The token allowance of the sender is insufficient.
    error ERC20_SenderAllowanceInsufficient();

    /// @notice The balance of the token owner is insufficient.
    error ERC20_TokenBalanceInsufficient();

    ////////////////////////////////////////////////////////////////////////////
    //                                 WONDY                                  //
    ////////////////////////////////////////////////////////////////////////////

    /// @notice The token recipient may not own more than 1% of the total supply.
    error Wondys_OnePercentTransferLimitExceeded();

    ////////////////////////////////////////////////////////////////////////////
    //                                Staking                                 //
    ////////////////////////////////////////////////////////////////////////////

}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title Unownable Contract Interface
interface IUnownable {

    /// @notice Transfers contract ownership from `prevOwner` to `newOwner`.
    /// @param prevOwner The current owner of the contract.
    /// @param newOwner The new owner of the contract.
    event OwnershipTransferred(address prevOwner, address newOwner);

    /// @notice Gets the current owner of the contract.
    function owner() external returns (address);

    /// @notice Permanently revokes ownership of the underlying contract.
    function revokeOwnership() external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import { Errors } from "src/lib/Errors.sol";
import { IUnownable } from "./interfaces/IUnownable.sol";

/// @title Unownable Contract
/// @notice Contract built for irreversible revocation of ownership.
contract Unownable is IUnownable {
    /// @notice The current contract owner address.
    address public owner;

    /// @notice Modifier to ensure message sender is the contract owner.
    modifier onlyOwner {
        if (msg.sender != owner) {
            revert Errors.OwnerInvalid();
        }
        _;
    }

    /// @notice Creates the contract, signifying owner transfer to sender.
    constructor() {
        owner = msg.sender;
        emit OwnershipTransferred(address(0), msg.sender);
    }

    /// @notice Permanently revokes ownership of the underlying contract.
    function revokeOwnership() external onlyOwner {
        address oldOwner = owner;
        owner = address(0);
        emit OwnershipTransferred(oldOwner, address(0));
    }
}

// SPDX-License-Identifier: MIT
//                                                                          @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                                                 
//                                                                 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                                        
//                                                           @@@@@@@@@@@@@@@@@@@@@@@@%#**++++++++++**#%@@@@@@@@@@@@@@@@@@@@@                                   
//                                                       @@@@@@@@@@@@%*=----------------------------------------+%@@@@@@@@@@@@@                                
//                                                    @@@@@@@@+=-----------------------------------------------------=*@@@@@@@@@@                              
//                                                  @@@@@@+---------------------------------------------------------------#@@@@@@@@@                           
//                                                 @@@@+---------------------------------------------------------------------#@@@@@@@@                         
//                                               @@@@+--------=+**###%%%%%%%%%###**+=------------------------------------------*@@@@@@@                        
//                                              @@@@+#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%=---------------------------------------#@@@@@@                       
//                                            %%@%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%=-------------------------------------=@@@@@@@                     
//                                       %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#=------------------------------------@@@@@@@                    
//                                    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*-----------------------------------@@@@@@                    
//                                  %%%%%%%%%%%%#+*%%%%%%%%%%%%%%%%##%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%=--------------------------------=@@@@@@                   
//                               %%%%%%%%%%#+---*%%%%%%%%%%%%*+=------+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%+-------------------------------=@@@@@@                  
//                              %%%%%%*+-----=#%%%%%%%%#+---------------=#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%+-----------=*+----------------%@@@@@                  
//                            @%%*=--------+%%%%%*+-----------------------=*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%=---------@*#*#%*-------------@@@@@@                 
//                         @@+------------------------------=----=====-------+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#--------@*#####*%#=---------*@@@@@                 
//                       @@=-------------------------------+%#+-------@@@#=----=%%%%%%%%%%%%%%%%%%%%%%%%%%%%%-------@*########*%#-------=@@@@@@                
//                      @@*##**##+-------------------------=#------------*+-------*%%%%%%%%%%%%%%%%%%%%%%%%%%%=-----@*###########%=------@@@@@@                
//                      @@=------#---------------------------+%%####%%#=-------------*%%%%%%%%%%%%%%%%%%%%%%%%%-----@*##########*@-------*@@@@@                
//                     @@+==+*%#=-------==+---------------------------------------------=%%%%%%%%%%%%%%%%%%%%%%%*=--@##########*%--------=@@@@@                
//                     @%----+==---------------======---------------------------------------=#%%%%%%%%%%%%%%%%%%%%%@*##*%######%----------@@@@@                
//                      @#-=--=--========+*%%*-------+%=----------=----=--------------------------*%%%%%%%%%%%%%%%%%####*%##*%*-----------@@@@@                
//                       @@=-----*---------------------+----------------------------------------------#-+#%%%%%%%%%%######%%#------------=@@@@                 
//                         @@%=--=@-------------------#=-----------------------------------------------*=------+%%%#######%%%%%%%=-------+@@@@                 
//                          %%%%*--=@=--------------#**=------------------------------------------------#+-------*#@#*##%%%%%%%%%%%%%%+--%@@@@                 
//                         %%%%%%%%%%#+=%@@@@@@@#=----=+---------=*#%%#*=--------------------------------++-----+%######%%%%%%%%%%%%%%%%@@@@@%                 
//                        @%%%%%%%%%%%%%%%%@#%@@@@@@@@@@%#+-----------------%#-----------------------------#----%######*#+%%%%%%%%%%%%%%%%%%%%%%               
//                        %%%%%%%%%%%%%%@@@@*----------------------------------#=---------------------------@--########%=-#%%%%%%%%%%%%%%%%%%%                 
//        @%@            %%%%%%%%%%%%%%%%@@@@*-----------------------------------%=--------------------------%=--#%*###@---*%%%%%%%%%%%%%%%%%%%%               
//      @####%@         @%%%%%%%%%%%%%%  @@@@@@-----------------------------------=#--------------------------+*----%%#=----%%%%%%%%%%%%%%%%%%%%%%             
//    @########@@      %%%%%%%%%%%%%%%     @@@@@+-----------------------------------#---------------------------%------------#%%%%%%%%%%%%%%%%%%%%%%           
//   @###########@     %%%%%%%%%%%%%        @@@@@@-----------------------------------*=--------------------------*+-----------#%%%%%%%%%%%%%%%%%%%%            
//  @*#############@@@%%%%%%%%%%%%           @@@@@@@---------------------------------*@+----#@=----=@+------+*#---=%#@---------#%%%%%%%%%%%%%                  
//  @*###########*%##*#@@@@%%%%                @@@@@@@*-----------------------------=#-@--=%--#=--=#--#=----@--=#--=@-*=---------*@@%%%%%%%%%%                 
//   @*#########*#@%#@#*####@#%@@@@@              @@@@@@@*--------------------------#---%=%----++-#=---=%--#-----+##---=*--------+@@@@@@%%%%%%                 
//    @@@@@@@@@@%%%%%%%%@###%@#####**##%@            @@@@@@@@*---------------------%=----*------=@=------*+*------*#+----%-----*@@@@@@   %%%%%                 
//         %%%%%%%%%%%%%%%%*############@                @@@@@@@@@%*--------------+=----#+----=%####%+----+*------*##+----#=#@@@@@@@@       %%%                
//       %%%%%%%%%%%%%%%%% @@%########*@@                    @@@@@@@@@@@@@#*=----+*----=#=----*#*#*#%-----##*-----*###--*@@@@@@@@@@       %%%%%%               
//     %%%%%%%%%%%%%%%%%%%    @@@######@                           @@@@@@@@@@@@@@@@@%%###+==----=+=------=***--=+*#%@@@@@@@@@@@@         %%%%%%%               
//  %%%%%%%%%%%%%%%%%%%%%%        @@###@                                  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@      %%%%  %%%%%%%                
//%%%%%%%%%%%%%%%%%%%%%%%            @@            %%%%                              @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@            %%%%%% %%%%%%%                 
//%%        %%%%%%%%%%%%%                         %%%%%%                 %%%%%    %%%                                    %%%   %%%%%%% %%%%%%   %%%%%%%%       
//         %%%%%%%%%%%%%%                          %%%%%                %%%%%%  %%%%%%%      %%       %    %%%%%%%%%%%%%%%%%% %%%%%%%  %%%%%  %%%%%%%%%%%%     
//         %%%%%%%%%%%%%%                          %%%%%      %%%%%     %%%%%%%%%%%%%%     %%%%%%   %%%%%  %%%%%%%%%%%%%%%%%%%%%%%%          %%%%%%%%%%%%%%    
//        %%%%%%   @%%%%%                          %%%%%%    %%%%%%    %%%%%%%%%%%%%%%%%   %%%%%%  %%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%          %%%%%%%% %%%%     
//        %%%@      %%%%%                          %%%%%%    %%%%%%%   %%%%%%%%%%%%%%%%%  %%%%%%%% %%%%%% %%%%%    %%%%%% %%%%%%%%           %%%%%%%%%%%%%%    
//                   %%%%                           %%%%%  %%%%%%%%%  %%%%%%%%%%%  %%%%%% %%%%%%%% %%%%%  %%%%%   %%%%%%  %%%%%%%             %%%%%%%%%%%%%%%% 
//                    %%@                           %%%%%  %%%%%%%%%%%%%%%%%%%%%    %%%%% %%%%%%%%%%%%%% %%%%%%  %%%%%%    %%%%%%                   %%%%%%%%%%%
//                     %                            %%%%%%%%%%%%%%%%%%%%%%%%%%%%    %%%%%%%%%%%%%%%%%%%  %%%%%% %%%%%%    %%%%%% %%%%%                   %%%%%%
//                                                   %%%%%%%%%% %%%%%%%%%%%%%%%%    %%%%%%%%%%%%%%%%%%%  %%%%%%%%%%%%     %%%%%%%%%%%%%%                 %%%%%%
//                                 ser, dis is a     %%%%%%%%%  %%%%%%%%% %%%%%%   %%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%      %%%%%%  %%%%%%%%             %%%%%%%%
//                                                   %%%%%%%%   %%%%%%%%  %%%%%% %%%%%%% %%%%%  %%%%%%%  %%%%%%%%%%       %%%%%     %%%%%%%%%       %%%%%%%%%  
//                                                    %%%%%     %%%%%%%%  %%%%%%%%%%%%% %%%%%%    %%%%   %%%%%%%%         %%%%%       %%%%%%%%%%%%%%%%%%%%%%   
//                                                               %%%%%     %%%%%%%%%%    %%%%            %%%%%%           %%%%%          %%%%%%%%%%%%%%%%      
//                                                                          %%%%%%%                                        %%               %%%%%%%%%
//
//  apply tu be a wondys ehmployee at https://wondys.xyz
//
pragma solidity ^0.8.24;

import { IERC20Metadata } from "openzeppelin-contracts/token/ERC20/extensions/IERC20Metadata.sol";
import { Errors } from "src/lib/Errors.sol";
import { Unownable } from "src/Unownable.sol";

/// @title Wondys Contract
contract Wondys is IERC20Metadata, Unownable {
    /// @notice Gets the token balance for an owner address.
    mapping(address owner => uint256) public balanceOf;

    /// @notice Gets the token allowance of a spender on behalf of an owner.
    mapping(address owner => mapping(address spender => uint256)) public allowance;

    /// @notice Gets the total supply of the token.
    uint256 public totalSupply;

    /// @notice Gets the name of the token.
    string public constant name = "Wondys";

    /// @notice Gets the symbol of the token.
    string public constant symbol = "WONDY";

    /// @notice Gets the number of token decimals, fixed to 18.
    uint8 public constant decimals = 18;

    /// @notice Returns whether the 1% transfer limit is being enforced.
    bool public onePercentLimitEnforced = true;

    /// @notice Returns the address of the $WONDY LP (or zero if not assigned).
    address public lp;

    constructor() {
        _mint(msg.sender, 888_624_814 * 1e18);
    }

    /// @notice Sets whether or not the one percent transfer limit is enforced.
    /// @param enforced Whether or not to enforce the 1% transfer limit.
    function setOnePercentLimitEnforced(bool enforced) external onlyOwner {
        onePercentLimitEnforced = enforced;
    }

    /// @notice Enable trading by setting the LP address pair.
    /// @param liquidityPool Address of the $WONDY LP contract.
    function setLP(address liquidityPool) external onlyOwner {
        require(lp == address(0), "Wondys: LP already set");
        lp = liquidityPool;
    }

    /// @notice Burns `amount` tokens owned by the message sender.
    function burn(uint256 amount) public {
        _burn(msg.sender, amount);
    }

    /// @notice Approves a spender to spend tokens on behalf of the sender.
    /// @param spender The address of the spender being granted an allowance.
    /// @param amount The token amount being granted for the spender allowance.
    /// @return Whether or not the approval was successful.
    function approve(address spender, uint256 amount) public returns (bool) {
        allowance[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    /// @notice Transfers `amount` tokens from sender to recipient address `to`.
    /// @param to The address of the recipient receiving the tokens.
    /// @param amount The number of tokens being transferrd to the recipient.
    /// @return Whether the transfer was successful or not.
    function transfer(address to, uint256 amount) public returns (bool) {
        _transfer(msg.sender, to, amount);
        return true;
    }

    /// @notice Transfers `amount` tokens from address `from` to address `to`.
    /// @param from The address of the owner whose tokens are being transferred.
    /// @param to The recipient address of the token transfer.
    /// @param amount The number of tokens being transferred.
    /// @return Whether the transfer was successful or not.
    function transferFrom(address from, address to, uint256 amount) public returns (bool) {
        uint256 senderAllowance = allowance[from][msg.sender];
        if ((senderAllowance) != type(uint256).max) {
            if (senderAllowance < amount) {
                revert Errors.ERC20_SenderAllowanceInsufficient();
            }
            unchecked {
                allowance[from][msg.sender] = senderAllowance - amount;
            }
        }
        _transfer(from, to, amount);
        return true;
    }

    /// @dev Validates whether a transfer is valid or not.
    /// @param to The recipient address of the token transfer.
    function _validateTransfer(address, address to, uint256) internal view {
        if (onePercentLimitEnforced && to != lp && balanceOf[to] * 100 > totalSupply) {
            revert Errors.Wondys_OnePercentTransferLimitExceeded();
        }
    }


    /// @dev Transfers tokens from address `from` to address `to`.
    /// @param from The address of the owner whose tokens are being transferred.
    /// @param to The recipient address of the token transfer.
    /// @param amount The number of tokens being transferred.
    function _transfer(address from, address to, uint256 amount) internal {
        uint256 balance = balanceOf[from];
        if (balance < amount) {
            revert Errors.ERC20_TokenBalanceInsufficient();
        }
        unchecked {
            balanceOf[from] -= amount;
            balanceOf[to] += amount;
        }
        _validateTransfer(from, to, amount);
        emit Transfer(from, to, amount);
    }

    /// @dev Mints `amount` tokens to recipient address `to`.
    /// @param to The address receiving the minted tokens.
    /// @param amount The number of tokens to mint to address `to`.
    function _mint(address to, uint256 amount) internal {
        totalSupply += amount; // Only place overflow of supply must be checked.
        unchecked {
            balanceOf[to] += amount;
        }
        emit Transfer(address(0), to, amount);
    }

    /// @dev Burns `amount` tokens owned by address `from`.
    /// @param from The address whose tokens are being burned.
    /// @param amount The number of tokens to burn.
    function _burn(address from, uint256 amount) internal {
        uint256 balance = balanceOf[from];
        if (balance < amount) {
            revert Errors.ERC20_TokenBalanceInsufficient();
        }
        unchecked {
            balanceOf[from] -= amount;
            totalSupply -= amount;
        }
        emit Transfer(from, address(0), amount);
    }
}

{
  "compilationTarget": {
    "src/Wondys.sol": "Wondys"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 20000
  },
  "remappings": [
    ":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    ":ds-test/=lib/forge-std/lib/ds-test/src/",
    ":erc4626-tests/=lib/joe-v2/lib/openzeppelin-contracts/lib/erc4626-tests/",
    ":forge-std/=lib/forge-std/src/",
    ":joe-v2/test/=lib/joe-v2/test/",
    ":openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
    ":openzeppelin/=lib/joe-v2/lib/openzeppelin-contracts/contracts/"
  ]
}