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dynsmic badge features. Liquidity pool enhancements. Formatting
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| Original file line number | Diff line number | Diff line change |
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| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.13; | ||
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| import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; | ||
| import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; | ||
| import "@openzeppelin/contracts/access/Ownable.sol"; | ||
| import "./Badge.sol"; | ||
|
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| /** | ||
| * @title BadgeMarketplace | ||
| * @dev Handles badge trading and time-limited badge features | ||
| */ | ||
| contract BadgeMarketplace is ReentrancyGuard, Ownable { | ||
| Badge public immutable badgeContract; | ||
|
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| struct Listing { | ||
| address seller; | ||
| uint256 price; | ||
| uint256 expiry; // 0 for permanent badges, timestamp for time-limited | ||
| } | ||
|
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| // TokenId => Listing | ||
| mapping(uint256 => Listing) public listings; | ||
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| // Time-limited badge expiry tracking | ||
| mapping(uint256 => uint256) public badgeExpiry; | ||
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| event BadgeListed(uint256 indexed tokenId, address indexed seller, uint256 price, uint256 expiry); | ||
| event BadgeSold(uint256 indexed tokenId, address indexed seller, address indexed buyer, uint256 price); | ||
| event BadgeUnlisted(uint256 indexed tokenId); | ||
| event BadgeExpired(uint256 indexed tokenId); | ||
|
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| constructor(address _badgeContract) { | ||
| badgeContract = Badge(_badgeContract); | ||
| } | ||
|
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| /** | ||
| * @dev List a badge for sale | ||
| * @param tokenId The ID of the badge to list | ||
| * @param price The price in wei | ||
| * @param expiry The expiration timestamp (0 for permanent badges) | ||
| */ | ||
| function listBadge(uint256 tokenId, uint256 price, uint256 expiry) external { | ||
| require(badgeContract.ownerOf(tokenId) == msg.sender, "Not badge owner"); | ||
| require(badgeContract.getApproved(tokenId) == address(this), "Marketplace not approved"); | ||
|
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| listings[tokenId] = Listing({seller: msg.sender, price: price, expiry: expiry}); | ||
|
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| if (expiry > 0) { | ||
| badgeExpiry[tokenId] = expiry; | ||
| } | ||
|
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| emit BadgeListed(tokenId, msg.sender, price, expiry); | ||
| } | ||
|
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| /** | ||
| * @dev Purchase a listed badge | ||
| * @param tokenId The ID of the badge to purchase | ||
| */ | ||
| function purchaseBadge(uint256 tokenId) external payable nonReentrant { | ||
| Listing memory listing = listings[tokenId]; | ||
| require(listing.seller != address(0), "Badge not listed"); | ||
| require(msg.value >= listing.price, "Insufficient payment"); | ||
|
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| if (listing.expiry > 0) { | ||
| require(block.timestamp < listing.expiry, "Badge expired"); | ||
| } | ||
|
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| address seller = listing.seller; | ||
| uint256 price = listing.price; | ||
|
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| // Clear the listing first to prevent reentrancy | ||
| delete listings[tokenId]; | ||
|
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| // Transfer badge ownership | ||
| badgeContract.transferFrom(seller, msg.sender, tokenId); | ||
|
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| // Transfer payment to seller | ||
| (bool success,) = seller.call{value: price}(""); | ||
| require(success, "Transfer to seller failed"); | ||
|
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| // Refund excess payment | ||
| uint256 excess = msg.value - price; | ||
| if (excess > 0) { | ||
| (bool refundSuccess,) = msg.sender.call{value: excess}(""); | ||
| require(refundSuccess, "Refund failed"); | ||
| } | ||
|
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||
| emit BadgeSold(tokenId, seller, msg.sender, price); | ||
| } | ||
|
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| /** | ||
| * @dev Unlist a badge from the marketplace | ||
| * @param tokenId The ID of the badge to unlist | ||
| */ | ||
| function unlistBadge(uint256 tokenId) external { | ||
| require(listings[tokenId].seller == msg.sender, "Not seller"); | ||
| delete listings[tokenId]; | ||
| emit BadgeUnlisted(tokenId); | ||
| } | ||
|
|
||
| /** | ||
| * @dev Check if a badge has expired | ||
| * @param tokenId The ID of the badge to check | ||
| * @return bool True if the badge has expired | ||
| */ | ||
| function isBadgeExpired(uint256 tokenId) public view returns (bool) { | ||
| uint256 expiry = badgeExpiry[tokenId]; | ||
| return expiry > 0 && block.timestamp >= expiry; | ||
| } | ||
|
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| /** | ||
| * @dev Get all active listings | ||
| * @return tokenIds Array of token IDs with active listings | ||
| * @return prices Array of prices for the active listings | ||
| * @return sellers Array of sellers for the active listings | ||
| * @return expiries Array of expiry timestamps for the active listings | ||
| */ | ||
| function getActiveListings() | ||
| external | ||
| view | ||
| returns ( | ||
| uint256[] memory tokenIds, | ||
| uint256[] memory prices, | ||
| address[] memory sellers, | ||
| uint256[] memory expiries | ||
| ) | ||
| { | ||
| uint256 count = 0; | ||
| for (uint256 i = 1; i <= badgeContract.totalSupply(); i++) { | ||
| if (listings[i].seller != address(0) && !isBadgeExpired(i)) { | ||
| count++; | ||
| } | ||
| } | ||
|
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| tokenIds = new uint256[](count); | ||
| prices = new uint256[](count); | ||
| sellers = new address[](count); | ||
| expiries = new uint256[](count); | ||
|
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| uint256 index = 0; | ||
| for (uint256 i = 1; i <= badgeContract.totalSupply(); i++) { | ||
| if (listings[i].seller != address(0) && !isBadgeExpired(i)) { | ||
| tokenIds[index] = i; | ||
| prices[index] = listings[i].price; | ||
| sellers[index] = listings[i].seller; | ||
| expiries[index] = listings[i].expiry; | ||
| index++; | ||
| } | ||
| } | ||
| } | ||
| } |
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