add dodoCollection

contracts/Factory/DODONFT.sol

@@ -0,0 +1,43 @@
+/*
+
+    Copyright 2021 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {ERC721URIStorage} from "../external/ERC721/ERC721URIStorage.sol";
+import {InitializableOwnable} from "../lib/InitializableOwnable.sol";
+
+contract DODONFT is ERC721URIStorage, InitializableOwnable {
+    
+    uint256 public _CUR_TOKENID_;
+
+    // ============ Event =============
+    event DODONFTMint(address creator, uint256 tokenId);
+    event DODONFTBurn(uint256 tokenId);
+    
+    function init(
+        address owner,
+        string memory name,
+        string memory symbol
+    ) public {
+        initOwner(owner);
+        _name = name;
+        _symbol = symbol;
+    }
+
+    function mint(string calldata uri) external {
+        _safeMint(msg.sender, _CUR_TOKENID_);
+        _setTokenURI(_CUR_TOKENID_, uri);
+        emit DODONFTMint(msg.sender, _CUR_TOKENID_);
+        _CUR_TOKENID_ = _CUR_TOKENID_ + 1;
+    }
+
+    function burn(uint256 tokenId) external onlyOwner {
+        require(tokenId < _CUR_TOKENID_, "TOKENID_INVALID");
+        _burn(tokenId);
+        emit DODONFTBurn(tokenId);
+    }
+}

contracts/Factory/DODONFT1155.sol

@@ -0,0 +1,57 @@
+/*
+
+    Copyright 2021 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {ERC1155} from "../external/ERC1155/ERC1155.sol";
+import {Strings} from "../external/utils/Strings.sol";
+import {InitializableOwnable} from "../lib/InitializableOwnable.sol";
+
+contract DODONFT1155 is ERC1155, InitializableOwnable {
+    using Strings for uint256;
+
+    uint256 public _CUR_TOKENID_;
+    string internal _baseUri = "";
+    mapping (uint256 => string) private _tokenURIs;
+
+    // ============ Event =============
+    event DODONFTMint(address creator, uint256 tokenId, uint256 amount);
+    event DODONFTBurn(address account, uint256 tokenId, uint256 amount);
+    
+
+    function mint(string calldata uri, uint256 amount) external {
+        _mint(msg.sender, _CUR_TOKENID_, amount, "");
+        _setTokenURI(_CUR_TOKENID_, uri);
+        emit DODONFTMint(msg.sender, _CUR_TOKENID_, amount);
+        _CUR_TOKENID_ = _CUR_TOKENID_ + 1;
+    }
+
+    function burn(address account, uint256 tokenId, uint256 amount) external onlyOwner {
+        require(tokenId < _CUR_TOKENID_, "TOKENID_INVALID");
+        _burn(account, tokenId, amount);
+        emit DODONFTBurn(account, tokenId, amount);
+    }
+
+    function uri(uint256 tokenId) public view override returns (string memory) {
+        string memory _tokenURI = _tokenURIs[tokenId];
+        string memory base = _baseUri;
+
+        if (bytes(base).length == 0) {
+            return _tokenURI;
+        }
+
+        if (bytes(_tokenURI).length > 0) {
+            return string(abi.encodePacked(base, _tokenURI));
+        }
+
+        return super.uri(tokenId);
+    }
+
+    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal {
+        _tokenURIs[tokenId] = _tokenURI;
+    }
+}