CoinFlipFactory

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * 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);
    }
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC1363.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";
"
    },
    "@openzeppelin/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// 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;
    }
}
"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}
"
    },
    "src/CoinFlipBetting.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ICoinFlipBetting.sol";

interface IBettingManager {
    function requestVRF(uint256 _betId, address _player1, address _player2) external payable returns (uint256);
    function registerPlayerBet(address _player, uint256 _betId) external;
    function getVRFCost() external view returns (uint256);
}

contract CoinFlipBetting is ICoinFlipBetting, ReentrancyGuard, Ownable {
    using SafeERC20 for IERC20;

    // Contract Configuration
    IERC20 public immutable acceptedToken;
    address public immutable bettingProvider;
    IBettingManager public immutable bettingManager;
    uint256 public constant FEE_PERCENTAGE = 500; // 5% fee (500 basis points)
    uint256 private constant BASIS_POINTS = 10000;

    // State Variables
    uint256 private nextBetId = 1;
    uint256 public accumulatedFees;
    uint256 public totalBets;
    uint256 public activeBets;
    uint256 public minimumAmount;

    // Mappings
    mapping(uint256 => Bet) public bets;
    mapping(address => uint256[]) private creatorToBets;
    mapping(address => uint256[]) private joinerToBets;

    // Custom Errors
    error InvalidAmount();
    error InvalidChoice();
    error BetNotFound();
    error BetNotOpen();
    error BetAlreadyMatched();
    error NotBetCreator();
    error CannotJoinOwnBet();
    error InsufficientBalance();
    error TransferFailed();
    error NoFeesToWithdraw();
    error OnlyBettingProvider();
    error OnlyBettingManager();
    error BetNotCompletedOrCancelled();
    error EmergencyWithdrawNotAllowed();
    error InsufficientVRFFee();
    error BelowMinimumAmount();

    // Events
    event VRFCostUpdated(uint256 newCost, uint256 timestamp);

    constructor(
        address _acceptedToken,
        address _bettingProvider,
        address _bettingManager,
        uint256 _minimumAmount
    ) Ownable(_bettingProvider) {
        acceptedToken = IERC20(_acceptedToken);
        bettingProvider = _bettingProvider;
        bettingManager = IBettingManager(_bettingManager);
        minimumAmount = _minimumAmount;
    }

    /**
     * @dev Create a new bet
     * @param _amount Amount to bet
     * @param _choice Creator's choice (HEADS or TAILS)
     * @return betId The ID of the created bet
     */
    function createBet(uint256 _amount, BetResult _choice) 
        external 
        override
        nonReentrant 
        returns (uint256 betId) 
    {
        if (_amount == 0) revert InvalidAmount();
        if (_amount < minimumAmount) revert BelowMinimumAmount();
        if (_choice != BetResult.HEADS && _choice != BetResult.TAILS) revert InvalidChoice();

        // Transfer tokens from creator
        acceptedToken.safeTransferFrom(msg.sender, address(this), _amount);

        betId = nextBetId++;
        
        bets[betId] = Bet({
            betId: betId,
            creator: msg.sender,
            joiner: address(0),
            amount: _amount,
            creatorChoice: _choice,
            result: BetResult.PENDING,
            status: BetStatus.OPEN,
            requestId: 0,
            createdAt: block.timestamp,
            matchedTime: 0,
            completedAt: 0,
            winner: address(0)
        });

        creatorToBets[msg.sender].push(betId);
        totalBets++;
        activeBets++;

        // Register bet with manager
        bettingManager.registerPlayerBet(msg.sender, betId);

        emit BetCreated(betId, msg.sender, _amount, _choice, block.timestamp);
    }

    /**
     * @dev Join an existing bet (requires ETH for VRF fee)
     * @param _betId ID of the bet to join
     */
    function joinBet(uint256 _betId) external payable nonReentrant {
        Bet storage bet = bets[_betId];
        
        if (bet.creator == address(0)) revert BetNotFound();
        if (bet.status != BetStatus.OPEN) revert BetNotOpen();
        if (bet.creator == msg.sender) revert CannotJoinOwnBet();

        // Check if sufficient ETH is provided for VRF fee
        uint256 vrfCost = bettingManager.getVRFCost();
        if (msg.value < vrfCost) revert InsufficientVRFFee();

        // Transfer tokens from joiner
        acceptedToken.safeTransferFrom(msg.sender, address(this), bet.amount);

        bet.joiner = msg.sender;
        bet.status = BetStatus.MATCHED;
        bet.matchedTime = block.timestamp;
        joinerToBets[msg.sender].push(_betId);

        // Register bet with manager
        bettingManager.registerPlayerBet(msg.sender, _betId);

        emit BetJoined(_betId, msg.sender, block.timestamp);

        // Request randomness from BettingManager with ETH payment
        uint256 requestId = bettingManager.requestVRF{value: vrfCost}(_betId, bet.creator, bet.joiner);
        bet.requestId = requestId;

        // Refund any excess ETH
        if (msg.value > vrfCost) {
            payable(msg.sender).transfer(msg.value - vrfCost);
        }

        emit VRFRequested(_betId, requestId, block.timestamp);
    }

    /**
     * @dev Cancel an open bet (only by creator)
     * @param _betId ID of the bet to cancel
     */
    function cancelBet(uint256 _betId) external nonReentrant {
        Bet storage bet = bets[_betId];
        
        if (bet.creator != msg.sender) revert NotBetCreator();
        if (bet.status != BetStatus.OPEN) revert BetNotOpen();

        bet.status = BetStatus.CANCELLED;
        bet.completedAt = block.timestamp;
        activeBets--;

        // Refund creator
        acceptedToken.safeTransfer(bet.creator, bet.amount);

        emit BetCancelled(_betId, bet.creator, bet.amount, block.timestamp);
    }

    /**
     * @dev Update minimum amount (only by betting provider)
     * @param _newMinimumAmount New minimum amount for bets
     */
    function updateMinimumAmount(uint256 _newMinimumAmount) external override nonReentrant {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        
        uint256 oldMinimumAmount = minimumAmount;
        minimumAmount = _newMinimumAmount;

        emit MinimumAmountUpdated(oldMinimumAmount, _newMinimumAmount, block.timestamp);
    }

    /**
     * @dev Withdraw accumulated fees (only by betting provider)
     * @notice Fees are now transferred immediately upon bet completion
     */
    function withdrawFees() external override nonReentrant {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        if (accumulatedFees == 0) revert NoFeesToWithdraw();

        uint256 feesToWithdraw = accumulatedFees;
        accumulatedFees = 0;

        acceptedToken.safeTransfer(bettingProvider, feesToWithdraw);

        emit FeeWithdrawn(bettingProvider, feesToWithdraw, block.timestamp);
    }

    /**
     * @dev Emergency withdraw for stuck funds (only after significant time)
     * @param _betId ID of the bet to emergency withdraw from
     */
    function emergencyWithdraw(uint256 _betId) external nonReentrant {
        Bet storage bet = bets[_betId];

        if (bet.creator != msg.sender && bet.joiner != msg.sender) revert NotBetCreator();
        if (bet.status == BetStatus.COMPLETED || bet.status == BetStatus.CANCELLED) {
            revert BetNotCompletedOrCancelled();
        }

        // Allow emergency withdraw for OPEN bets by creator at any time
        if (bet.status == BetStatus.OPEN) {
            if (bet.creator != msg.sender) revert NotBetCreator();
            bet.status = BetStatus.CANCELLED;
            bet.completedAt = block.timestamp;
            activeBets--;
            acceptedToken.safeTransfer(bet.creator, bet.amount);
            emit EmergencyWithdraw(bet.creator, bet.amount, block.timestamp);
            return;
        }

        // Allow emergency withdraw for MATCHED bets only after a timeout
        if (bet.status == BetStatus.MATCHED) {
            if (block.timestamp < bet.matchedTime + 24 hours + 1 minutes) {
                revert EmergencyWithdrawNotAllowed();
            }

            bet.status = BetStatus.CANCELLED;
            bet.completedAt = block.timestamp;
            activeBets--;

            acceptedToken.safeTransfer(bet.creator, bet.amount);
            acceptedToken.safeTransfer(bet.joiner, bet.amount);

            emit BetCancelled(_betId, address(0), bet.amount * 2, block.timestamp); // A new event might be better
            return;
        }
    }

    /**
     * @dev Fulfill VRF request (only BettingManager can call)
     * @param _betId ID of the bet to resolve
     * @param _randomNumber Random number from VRF
     */
    function fulfillVRF(uint256 _betId, uint256 _randomNumber) external {
        if (msg.sender != address(bettingManager)) revert OnlyBettingManager();
        
        Bet storage bet = bets[_betId];
        if (bet.status != BetStatus.MATCHED) return;

        BetResult result = (_randomNumber % 2 == 0) ? BetResult.HEADS : BetResult.TAILS;
        
        bet.result = result;
        bet.status = BetStatus.COMPLETED;
        bet.completedAt = block.timestamp;
        activeBets--;

        // Determine winner
        address winner;
        address loser;
        if (bet.creatorChoice == result) {
            winner = bet.creator;
            loser = bet.joiner;
        } else {
            winner = bet.joiner;
            loser = bet.creator;
        }
        bet.winner = winner;

        // Calculate amounts
        uint256 totalPot = bet.amount * 2;
        uint256 feeAmount = (totalPot * FEE_PERCENTAGE) / BASIS_POINTS;
        uint256 winnerAmount = totalPot - feeAmount;

        // Transfer fees directly to betting provider
        if (feeAmount > 0) {
            acceptedToken.safeTransfer(bettingProvider, feeAmount);
        }

        // Transfer winnings to winner
        acceptedToken.safeTransfer(winner, winnerAmount);

        emit VRFResponseReceived(_betId, bet.requestId, _randomNumber, result, block.timestamp);
        emit BetCompleted(_betId, winner, loser, winnerAmount, feeAmount, result, block.timestamp);
    }

    // View Functions
    
    /**
     * @dev Get the current VRF cost in ETH
     * @return cost The cost in wei
     */
    function getVRFCost() external view returns (uint256 cost) {
        return bettingManager.getVRFCost();
    }

    /**
     * @dev Get minimum amount for bets
     * @return minimumAmount The minimum amount required for bets
     */
    function getMinimumAmount() external view override returns (uint256) {
        return minimumAmount;
    }

    function getBet(uint256 _betId) external view returns (Bet memory) {
        return bets[_betId];
    }

    function getBetsByCreator(address _creator) external view returns (uint256[] memory) {
        return creatorToBets[_creator];
    }

    function getBetsByJoiner(address _joiner) external view returns (uint256[] memory) {
        return joinerToBets[_joiner];
    }

    function getAcceptedToken() external view returns (address) {
        return address(acceptedToken);
    }

    function getBettingProvider() external view returns (address) {
        return bettingProvider;
    }

    function getFeePercentage() external pure returns (uint256) {
        return FEE_PERCENTAGE;
    }

    function getAccumulatedFees() external view override returns (uint256) {
        return accumulatedFees;
    }

    function getTotalBets() external view returns (uint256) {
        return totalBets;
    }

    function getActiveBets() external view returns (uint256) {
        return activeBets;
    }

    /**
     * @dev Emergency withdraw ETH (only owner)
     */
    function emergencyWithdrawETH() external onlyOwner {
        payable(owner()).transfer(address(this).balance);
    }

    /**
     * @dev Receive ETH for potential refunds or emergency situations
     */
    receive() external payable {}
} "
    },
    "src/CoinFlipFactory.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "./CoinFlipBetting.sol";

interface IBettingManagerRegistry {
    function registerBettingContract(address _bettingContract, address _token) external;
}

contract CoinFlipFactory is Ownable, ReentrancyGuard {
    // Factory State
    address public bettingProvider;
    address public immutable bettingManager;
    uint256 private nextBettingId = 1;
    
    // Mappings
    mapping(address => address) public tokenToBettingContract; // token address => betting contract address
    mapping(address => uint256) public bettingContractToId; // betting contract address => betting ID
    mapping(uint256 => BettingInfo) public bettingContracts; // betting ID => betting info
    address[] public allBettingContracts;
    address[] public supportedTokens;

    // Structs
    struct BettingInfo {
        uint256 bettingId;
        address bettingContract;
        address token;
        address creator;
        uint256 createdAt;
        uint256 minimumAmount;
        bool isActive;
    }

    event BettingContractCreated(
        uint256 indexed bettingId,
        address indexed bettingContract,
        address indexed token,
        address creator,
        uint256 minimumAmount,
        uint256 timestamp
    );

    event BettingContractDeactivated(
        uint256 indexed bettingId,
        address indexed bettingContract,
        address indexed token,
        uint256 timestamp
    );

    event BettingContractReactivated(
        uint256 indexed bettingId,
        address indexed bettingContract,
        address indexed token,
        uint256 timestamp
    );

    event BettingProviderChanged(
        address indexed oldProvider,
        address indexed newProvider,
        uint256 timestamp
    );

    event MinimumAmountUpdated(
        uint256 indexed bettingId,
        address indexed bettingContract,
        uint256 oldMinimumAmount,
        uint256 newMinimumAmount,
        uint256 timestamp
    );

    error BettingContractAlreadyExists();
    error BettingContractNotFound();
    error InvalidToken();
    error InvalidBettingProvider();
    error OnlyBettingProvider();
    error BettingContractNotActive();
    error InvalidMinimumAmount();

    constructor(
        address _bettingProvider,
        address _bettingManager
    ) Ownable(_bettingProvider) {
        if (_bettingProvider == address(0)) revert InvalidBettingProvider();
        
        bettingProvider = _bettingProvider;
        bettingManager = _bettingManager;
    }

    /**
     * @dev Create a new betting contract for a specific token (only owner)
     * @param _token Address of the ERC20 token to accept for betting
     * @param _minimumAmount Minimum amount required for bets in this pool
     * @return bettingContract Address of the created betting contract
     */
    function createBetting(address _token, uint256 _minimumAmount) 
        external 
        onlyOwner
        nonReentrant 
        returns (address bettingContract) 
    {
        if (_token == address(0)) revert InvalidToken();
        if (_minimumAmount == 0) revert InvalidMinimumAmount();
        if (tokenToBettingContract[_token] != address(0)) revert BettingContractAlreadyExists();

        // Deploy new CoinFlipBetting contract
        bettingContract = address(new CoinFlipBetting(
            _token,
            bettingProvider,
            bettingManager,
            _minimumAmount
        ));

        uint256 bettingId = nextBettingId++;

        // Store betting contract information
        BettingInfo memory bettingInfo = BettingInfo({
            bettingId: bettingId,
            bettingContract: bettingContract,
            token: _token,
            creator: msg.sender,
            createdAt: block.timestamp,
            minimumAmount: _minimumAmount,
            isActive: true
        });

        bettingContracts[bettingId] = bettingInfo;
        tokenToBettingContract[_token] = bettingContract;
        bettingContractToId[bettingContract] = bettingId;
        allBettingContracts.push(bettingContract);
        supportedTokens.push(_token);

        // Register with betting manager
        IBettingManagerRegistry(bettingManager).registerBettingContract(bettingContract, _token);

        emit BettingContractCreated(
            bettingId,
            bettingContract,
            _token,
            msg.sender,
            _minimumAmount,
            block.timestamp
        );
    }

    /**
     * @dev Update minimum amount for a betting contract (only by betting provider)
     * @param _token Address of the token whose betting contract to update
     * @param _newMinimumAmount New minimum amount for bets
     */
    function updateMinimumAmount(address _token, uint256 _newMinimumAmount) external {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        if (_newMinimumAmount == 0) revert InvalidMinimumAmount();
        
        address bettingContract = tokenToBettingContract[_token];
        if (bettingContract == address(0)) revert BettingContractNotFound();

        uint256 bettingId = bettingContractToId[bettingContract];
        BettingInfo storage bettingInfo = bettingContracts[bettingId];
        
        uint256 oldMinimumAmount = bettingInfo.minimumAmount;
        bettingInfo.minimumAmount = _newMinimumAmount;

        // Update the betting contract's minimum amount
        ICoinFlipBetting(bettingContract).updateMinimumAmount(_newMinimumAmount);

        emit MinimumAmountUpdated(
            bettingId,
            bettingContract,
            oldMinimumAmount,
            _newMinimumAmount,
            block.timestamp
        );
    }

    /**
     * @dev Deactivate a betting contract (only by betting provider)
     * @param _token Address of the token whose betting contract to deactivate
     */
    function deactivateBetting(address _token) external {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        
        address bettingContract = tokenToBettingContract[_token];
        if (bettingContract == address(0)) revert BettingContractNotFound();

        uint256 bettingId = bettingContractToId[bettingContract];
        BettingInfo storage bettingInfo = bettingContracts[bettingId];
        
        if (!bettingInfo.isActive) revert BettingContractNotActive();

        bettingInfo.isActive = false;

        emit BettingContractDeactivated(
            bettingId,
            bettingContract,
            _token,
            block.timestamp
        );
    }

    /**
     * @dev Reactivate a betting contract (only by betting provider)
     * @param _token Address of the token whose betting contract to reactivate
     */
    function reactivateBetting(address _token) external {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        
        address bettingContract = tokenToBettingContract[_token];
        if (bettingContract == address(0)) revert BettingContractNotFound();

        uint256 bettingId = bettingContractToId[bettingContract];
        BettingInfo storage bettingInfo = bettingContracts[bettingId];
        
        if (bettingInfo.isActive) return; // Already active

        bettingInfo.isActive = true;

        emit BettingContractReactivated(
            bettingId,
            bettingContract,
            _token,
            block.timestamp
        );
    }

    /**
     * @dev Update betting provider (only by current betting provider)
     * @param _newBettingProvider Address of the new betting provider
     */
    function updateBettingProvider(address _newBettingProvider) external {
        if (msg.sender != bettingProvider) revert OnlyBettingProvider();
        if (_newBettingProvider == address(0)) revert InvalidBettingProvider();

        address oldProvider = bettingProvider;
        bettingProvider = _newBettingProvider;

        emit BettingProviderChanged(oldProvider, _newBettingProvider, block.timestamp);
    }

    // View Functions

    /**
     * @dev Get betting contract address for a token
     * @param _token Address of the token
     * @return Address of the betting contract
     */
    function getBettingContract(address _token) external view returns (address) {
        return tokenToBettingContract[_token];
    }

    /**
     * @dev Get betting information by ID
     * @param _bettingId ID of the betting contract
     * @return BettingInfo struct
     */
    function getBettingInfo(uint256 _bettingId) external view returns (BettingInfo memory) {
        return bettingContracts[_bettingId];
    }

    /**
     * @dev Get minimum amount for a token's betting contract
     * @param _token Address of the token
     * @return Minimum amount required for bets
     */
    function getMinimumAmount(address _token) external view returns (uint256) {
        address bettingContract = tokenToBettingContract[_token];
        if (bettingContract == address(0)) return 0;
        
        uint256 bettingId = bettingContractToId[bettingContract];
        return bettingContracts[bettingId].minimumAmount;
    }

    /**
     * @dev Get all betting contracts
     * @return Array of betting contract addresses
     */
    function getAllBettingContracts() external view returns (address[] memory) {
        return allBettingContracts;
    }

    /**
     * @dev Get all supported tokens
     * @return Array of supported token addresses
     */
    function getSupportedTokens() external view returns (address[] memory) {
        return supportedTokens;
    }

    /**
     * @dev Get active betting contracts
     * @return Array of active betting contract addresses
     */
    function getActiveBettingContracts() external view returns (address[] memory) {
        uint256 activeCount = 0;
        
        // Count active contracts
        for (uint256 i = 0; i < allBettingContracts.length; i++) {
            uint256 bettingId = bettingContractToId[allBettingContracts[i]];
            if (bettingContracts[bettingId].isActive) {
                activeCount++;
            }
        }

        // Create array of active contracts
        address[] memory activeContracts = new address[](activeCount);
        uint256 currentIndex = 0;
        
        for (uint256 i = 0; i < allBettingContracts.length; i++) {
            uint256 bettingId = bettingContractToId[allBettingContracts[i]];
            if (bettingContracts[bettingId].isActive) {
                activeContracts[currentIndex] = allBettingContracts[i];
                currentIndex++;
            }
        }

        return activeContracts;
    }

    /**
     * @dev Get total number of betting contracts
     * @return Total number of betting contracts created
     */
    function getTotalBettingContracts() external view returns (uint256) {
        return allBettingContracts.length;
    }

    /**
     * @dev Check if a token has an active betting contract
     * @param _token Address of the token
     * @return True if the token has an active betting contract
     */
    function isTokenSupported(address _token) external view returns (bool) {
        address bettingContract = tokenToBettingContract[_token];
        if (bettingContract == address(0)) return false;
        
        uint256 bettingId = bettingContractToId[bettingContract];
        return bettingContracts[bettingId].isActive;
    }
} "
    },
    "src/ICoinFlipBetting.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface ICoinFlipBetting {
    // Enums
    enum BetResult { PENDING, HEADS, TAILS }
    enum BetStatus { OPEN, MATCHED, COMPLETED, CANCELLED }

    // Structs
    struct Bet {
        uint256 betId;
        address creator;
        address joiner;
        uint256 amount;
        BetResult creatorChoice;
        BetResult result;
        BetStatus status;
        uint256 requestId;
        uint256 createdAt;
        uint256 matchedTime;
        uint256 completedAt;
        address winner;
    }

    // Events for comprehensive tracking
    event BetCreated(
        uint256 indexed betId,
        address indexed creator,
        uint256 amount,
        BetResult creatorChoice,
        uint256 timestamp
    );

    event BetJoined(
        uint256 indexed betId,
        address indexed joiner,
        uint256 timestamp
    );

    event VRFRequested(
        uint256 indexed betId,
        uint256 indexed requestId,
        uint256 timestamp
    );

    event VRFResponseReceived(
        uint256 indexed betId,
        uint256 indexed requestId,
        uint256 randomNumber,
        BetResult result,
        uint256 timestamp
    );

    event BetCompleted(
        uint256 indexed betId,
        address indexed winner,
        address indexed loser,
        uint256 winnerAmount,
        uint256 feeAmount,
        BetResult result,
        uint256 timestamp
    );

    event BetCancelled(
        uint256 indexed betId,
        address indexed creator,
        uint256 refundAmount,
        uint256 timestamp
    );

    event FeeWithdrawn(
        address indexed provider,
        uint256 amount,
        uint256 timestamp
    );

    event EmergencyWithdraw(
        address indexed user,
        uint256 amount,
        uint256 timestamp
    );

    // Events for minimum amount updates
    event MinimumAmountUpdated(
        uint256 oldMinimumAmount,
        uint256 newMinimumAmount,
        uint256 timestamp
    );

    // Functions
    function createBet(uint256 _amount, BetResult _choice) external returns (uint256 betId);
    function joinBet(uint256 _betId) external payable;
    function cancelBet(uint256 _betId) external;
    function withdrawFees() external;
    function emergencyWithdraw(uint256 _betId) external;
    function fulfillVRF(uint256 _betId, uint256 _randomNumber) external;
    
    // View functions
    function getBet(uint256 _betId) external view returns (Bet memory);
    function getBetsByCreator(address _creator) external view returns (uint256[] memory);
    function getBetsByJoiner(address _joiner) external view returns (uint256[] memory);
    function getAcceptedToken() external view returns (address);
    function getBettingProvider() external view returns (address);
    function getFeePercentage() external view returns (uint256);
    function getAccumulatedFees() external view returns (uint256);
    function getTotalBets() external view returns (uint256);
    function getActiveBets() external view returns (uint256);
    function getVRFCost() external view returns (uint256);
    function getMinimumAmount() external view returns (uint256);
    
    // Minimum amount management functions
    function updateMinimumAmount(uint256 _newMinimumAmount) external;
} "
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}