feat: add eth nft contracts

.github/workflows/code-coverage.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly-2020-10-22
+          toolchain: nightly-2022-01-21
           override: true
           components: rustfmt, clippy
       - name: install-tarpaulin

eth-contracts/contracts/NervosMirrorNftToken.sol

@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+/// @title NervosMirrorNftToken - A token contract used for bridged nft token from Nervos Chain
+contract NervosMirrorNftToken is ERC1155, Ownable{
+    address public factory;
+    string public classId;
+
+    event CreatedNftToken(address tokenAddr, string classId, address factory);
+
+    constructor(string memory uri_, string memory classId_) ERC1155(uri_) {
+        factory = msg.sender;
+        classId = classId_;
+        emit CreatedNftToken(address(this), classId, factory);
+    }
+
+    function mint(address to, uint256 id, uint256 amount, bytes memory data) public onlyOwner {
+        _mint(to, id, amount, data);
+    }
+
+    function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) public onlyOwner {
+        _mintBatch(to, ids, amounts, data);
+    }
+
+    function burn(address account, uint256 id, uint256 value) public onlyOwner {
+        _burn(account, id, value);
+    }
+}

eth-contracts/contracts/NftClassManager.sol

@@ -0,0 +1,124 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
+import "./interfaces/IMirrorToken.sol";
+import "./interfaces/IMirrorNftToken.sol";
+import "./NervosMirrorNftToken.sol";
+
+/// @title Asset Manager - The entry to manage all bridged tokens from Nervos chain
+/// The owner of this contract should be transferred to the gnosis multi-sig wallet of Force Bridge committee when the
+/// initializing is done.
+/// All tokens recorded in this contract should be authorized to mint, and burn through this contract to make bridge action.
+contract NftClassManager is Ownable, ReentrancyGuard {
+  string private uri_ = "";
+
+  struct ChainMetadata {
+    uint8 chain; // 0: CKB
+    uint8 chainId;
+    uint8 nftType; // 1: mnft 2: nrc721 3: cota
+    uint256 cellTxHash;
+    uint32 cellIndex;
+    bytes sourceOwner;
+    string classId;
+    address token;
+  }
+
+  // classId is the identifier of the nft class cell on Nervos Chain
+  mapping(address => ChainMetadata) public tokenToChainMap;
+  mapping(string => ChainMetadata) public classIdToChainMap;
+  address[] public allTokens;
+
+  event MintNft(
+    string indexed classId,
+    address indexed token,
+    address indexed to,
+    uint256 nftId,
+    bytes lockId
+  );
+
+  event BurnNft(
+    string indexed classId,
+    address indexed token,
+    address indexed from,
+    uint256 nftId,
+    uint256 fee,
+    bytes recipient,
+    bytes extraData
+  );
+
+  struct MintNftRecord {
+    string classId; // nft class id locked on Nervos chain
+    address to; // address of the receiver
+    uint256 nftId; // nft id on Nervos chain
+    bytes lockId; // used to identify the lock transaction on Nervos Chain
+  }
+
+  function createClass2(ChainMetadata memory chain) internal returns(address tokenAddr){
+    tokenToChainMap[chain.token] = chain;
+    classIdToChainMap[chain.classId] = chain;
+    bytes32 salt = keccak256(abi.encodePacked(chain.classId));
+    NervosMirrorNftToken nervosMirrorNftToken = new NervosMirrorNftToken{salt: salt}(uri_, chain.classId);
+    tokenAddr = address(nervosMirrorNftToken);
+    chain.token = tokenAddr;
+    allTokens.push(tokenAddr);
+    tokenToChainMap[tokenAddr] = chain;
+    classIdToChainMap[chain.classId] = chain;
+  }
+
+  /// @dev Mint an nft.
+  /// @param records The mint records.
+  /// This function should only be invoked by the gnosis multi-sig wallet of Force Bridge committee.
+  function mintNft(MintNftRecord[] memory records) public onlyOwner {
+    for (uint256 i = 0; i < records.length; i++) {
+      ChainMetadata memory chain = classIdToChainMap[records[i].classId];
+      if (chain.token == address(0)) {
+        chain.token = createClass2(chain);
+      } else {
+        chain.token = classIdToChainMap[chain.classId].token;
+      }
+      require(chain.token != address(0), "nft class not found");
+      IMirrorNftToken(chain.token).mint(records[i].to, records[i].nftId, 1, "");
+      emit MintNft(
+        records[i].classId,
+        chain.token,
+        records[i].to,
+        records[i].nftId,
+        records[i].lockId
+      );
+    }
+  }
+
+  /// @dev Burn an nft and get the locked amount back on Nervos chain.
+  /// @param token The address of the token to burn.
+  /// @param nftId The nft id.
+  /// @param recipient The recipient on Nervos Chain.
+  /// @param extraData Extra data to be sent to the recipient.
+  function burnNft(
+    address token,
+    uint256 nftId,
+    bytes calldata recipient,
+    bytes calldata extraData
+  ) public payable nonReentrant {
+    ChainMetadata memory chain = tokenToChainMap[token];
+    require(chain.chainId != 0, "chain not supported");
+    require(chain.token != address(0), "token not supported");
+    // pay the fee to bridge committee
+    if (msg.value > 0) {
+      (bool success, ) = payable(owner()).call{value: msg.value}("");
+      require(success, "fee payment to bridge committee failed");
+    }
+    // burn the nft
+    IMirrorNftToken(token).burn(_msgSender(), nftId, 1);
+    emit BurnNft(
+      chain.classId,
+      token,
+      _msgSender(),
+      nftId,
+      msg.value,
+      recipient,
+      extraData
+    );
+  }
+}