creation_sourcecode: // File: @openzeppelin/contracts/utils/Context.sol
  
  
  // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
  
  pragma solidity ^0.8.20;
  
  /**
   * @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;
      }
  }
  
  // File: @openzeppelin/contracts/access/Ownable.sol
  
  
  // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
  
  pragma solidity ^0.8.20;
  
  
  /**
   * @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.
   *
   * The initial owner is set to the address provided by the deployer. 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;
  
      /**
       * @dev The caller account is not authorized to perform an operation.
       */
      error OwnableUnauthorizedAccount(address account);
  
      /**
       * @dev The owner is not a valid owner account. (eg. `address(0)`)
       */
      error OwnableInvalidOwner(address owner);
  
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
      /**
       * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
       */
      constructor(address initialOwner) {
          if (initialOwner == address(0)) {
              revert OwnableInvalidOwner(address(0));
          }
          _transferOwnership(initialOwner);
      }
  
      /**
       * @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 {
          if (owner() != _msgSender()) {
              revert OwnableUnauthorizedAccount(_msgSender());
          }
      }
  
      /**
       * @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 {
          if (newOwner == address(0)) {
              revert OwnableInvalidOwner(address(0));
          }
          _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: PaymentPoolNoWL.sol
  
  
  pragma solidity ^0.8.24;
  
  
  contract PaymentPool is Ownable {
      uint256 public maxPoolBalance;
      uint256 public maxContributionPerAddress;
      uint256 public poolBalance;
  
      mapping(address => uint256) public totalContributions;
  
      event PaymentMade(address indexed payer, uint256 amount);
      event PoolClosed();
  
      constructor(uint256 _maxPoolBalance, uint256 _maxContributionPerAddress, address initialOwner) Ownable(initialOwner) {
          maxPoolBalance = _maxPoolBalance;
          maxContributionPerAddress = _maxContributionPerAddress;
      }
  
      function closePool() public onlyOwner {
          maxPoolBalance = poolBalance;
          emit PoolClosed();
      }
  
      function reserveTokens() external payable {
          require(poolBalance < maxPoolBalance, "Pool has reached its limit");
          require(totalContributions[msg.sender] < maxContributionPerAddress, "Max contribution per address reached");
  
          uint256 contribution = msg.value;
  
          if (poolBalance + contribution > maxPoolBalance) {
              uint256 refundAmount = poolBalance + contribution - maxPoolBalance;
              payable(msg.sender).transfer(refundAmount);
              contribution -= refundAmount;
          }
  
          if (totalContributions[msg.sender] + contribution > maxContributionPerAddress) {
              uint256 excessContribution = totalContributions[msg.sender] + contribution - maxContributionPerAddress;
              payable(msg.sender).transfer(excessContribution);
              contribution -= excessContribution;
          }
  
          poolBalance += contribution;
          totalContributions[msg.sender] += contribution;
          emit PaymentMade(msg.sender, contribution);
      }
  
      function getAvailablePoolSpace() public view returns (uint256) {
          return maxPoolBalance - poolBalance;
      }
  
      function getPoolBalance() public view returns (uint256) {
          return poolBalance;
      }
  
      function getMaxPoolBalance() public view returns (uint256) {
          return maxPoolBalance;
      }
  
      function withdraw() external onlyOwner {
          payable(owner()).transfer(address(this).balance);
      }
  }