Contract Name:
FootballClubSale
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {MerkleProof} from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import {IFootballClub} from "./interfaces/IFootballClub.sol";
contract FootballClubSale is Ownable {
using Address for address;
IFootballClub public footballClub;
uint256 private price = 0.05 ether;
uint256 public clubsClaimed;
uint256 internal constant MINT_LIMIT = 3060;
uint256 private constant PHASE_1_TIMESTAMP = 1636999200;
uint256 private constant PHASE_2_TIMESTAMP = 1637172000;
uint256 private constant PHASE_3_TIMESTAMP = 1637344800;
bytes32 internal whitelistMerkleRootPhase1;
bytes32 internal whitelistMerkleRootPhase2;
bytes32 internal advisorMerkleRoot;
bytes32 public metadataMerkleRoot;
event Withdraw(bool indexed sent, bytes data);
mapping(bytes32 => mapping(address => uint256)) public redemptions;
constructor(
IFootballClub _footballClub,
bytes32 _whitelistMerkleRootPhase1,
bytes32 _whitelistMerkleRootPhase2,
bytes32 _advisorMerkleRoot,
bytes32 _metadataMerkleRoot,
uint256 _advisorAllocation
) {
footballClub = _footballClub;
whitelistMerkleRootPhase1 = _whitelistMerkleRootPhase1;
whitelistMerkleRootPhase2 = _whitelistMerkleRootPhase2;
advisorMerkleRoot = _advisorMerkleRoot;
metadataMerkleRoot = _metadataMerkleRoot;
clubsClaimed = _advisorAllocation;
}
function preMint(uint256 _tokenId, bytes32[] calldata proof) external {
require(_tokenId >= 1 && _tokenId <= 213, "Must be the correct token range");
require(
_advisorVerify(_advisorLeaf(_tokenId, msg.sender), proof),
"must be on the advisor whitelist"
);
footballClub.safeMint(msg.sender, _tokenId);
}
function _advisorVerify(bytes32 leaf, bytes32[] memory proof)
internal
view
returns (bool)
{
return MerkleProof.verify(proof, advisorMerkleRoot, leaf);
}
function _advisorLeaf(uint256 _tokenId, address account)
internal
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(_tokenId, account));
}
function _leaf(address account, uint256 amount)
internal
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(account, amount));
}
//need to check to ensure hasn't already minted
//map address to an integer - i.e. how many times has this address been minted for this phase
//pass in a dummy proof for the first stage
function redeem(
uint256 _amount,
uint256 _maxAmount,
bytes32[] calldata proof
) external payable {
require(msg.value >= _amount * price, "Insufficient payment");
require(_amount <= 50, "Incorrect amount");
require(_maxAmount > 0 && _maxAmount <= 50, "Incorrect max amount");
bytes32 whitelistMerkleRoot;
require(block.timestamp >= PHASE_1_TIMESTAMP, "whitelist not started");
if (block.timestamp < PHASE_2_TIMESTAMP) {
whitelistMerkleRoot = whitelistMerkleRootPhase1;
} else if (block.timestamp < PHASE_3_TIMESTAMP) {
whitelistMerkleRoot = whitelistMerkleRootPhase2;
} else {
for (uint256 i = 0; i < _amount; i++) {
require(clubsClaimed < MINT_LIMIT, "Cannot mint past limit");
clubsClaimed++;
footballClub.safeMint(msg.sender, clubsClaimed);
}
return;
}
bool status = MerkleProof.verify(
proof,
whitelistMerkleRoot,
_leaf(msg.sender, _maxAmount)
);
require(status, "Proof is invalid");
for (uint256 i = 0; i < _amount; i++) {
require(clubsClaimed < MINT_LIMIT, "Cannot mint past limit");
require(
redemptions[whitelistMerkleRoot][msg.sender] < _maxAmount,
"Cannot mint more than alloted"
);
redemptions[whitelistMerkleRoot][msg.sender]++;
clubsClaimed++;
footballClub.safeMint(msg.sender, clubsClaimed);
}
}
function verifyMetadata(bytes32 leaf, bytes32[] memory proof)
public
view
returns (bool)
{
return MerkleProof.verify(proof, metadataMerkleRoot, leaf);
}
function withdraw() external onlyOwner {
address payable owner = payable(owner());
(bool sent, bytes memory data) = owner.call{
value: address(this).balance
}("");
emit Withdraw(sent, data);
}
function setWhitelistMerkleRootPhase1(bytes32 _merkleRoot)
external
onlyOwner
{
whitelistMerkleRootPhase1 = _merkleRoot;
}
function setWhitelistMerkleRootPhase2(bytes32 _merkleRoot)
external
onlyOwner
{
whitelistMerkleRootPhase2 = _merkleRoot;
}
function setAdvisorMerkleRoot(bytes32 _merkleRoot) external onlyOwner {
advisorMerkleRoot = _merkleRoot;
}
}
pragma solidity ^0.8.0;
interface IFootballClub {
function safeMint(address, uint256) external;
function pause() external;
function unpause() external;
function tokenURI() external view;
function supportsInterface(bytes4) external view;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
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() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(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");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev These functions deal with verification of Merkle Trees proofs.
*
* The proofs can be generated using the JavaScript library
* https://github.com/miguelmota/merkletreejs[merkletreejs].
* Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
*
* See `test/utils/cryptography/MerkleProof.test.js` for some examples.
*/
library MerkleProof {
/**
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
* defined by `root`. For this, a `proof` must be provided, containing
* sibling hashes on the branch from the leaf to the root of the tree. Each
* pair of leaves and each pair of pre-images are assumed to be sorted.
*/
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
bytes32 proofElement = proof[i];
if (computedHash <= proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
} else {
// Hash(current element of the proof + current computed hash)
computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
}
}
// Check if the computed hash (root) is equal to the provided root
return computedHash == root;
}
}
// SPDX-License-Identifier: MIT
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;
}
}