# AngelNetwork Corner

```
npm install @openzeppelin/contracts @truffle/hdwallet-providee truffle-plugin-verify
node--version
migrations/:directory for scriptable deployment files
contracts/: Directory for solidity contracts
test/: Directory for test files for testing your application and contracts
truffle-config.js:Truffle configure file
 create core contracts
eco>contracts/'ERC1155Token.sol'
open file input:
//contracts/ERC1155Token.sol
//SPDX-License-Identifier:MIT
       pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/string.sol";

```

```
contract AngelNetCoin is ERC1155Token, ERC1155, Ownable{
  string[]public names;//string array of names
  uint[]public ids;// uint array of ids
  string public base MetadataURI;// the token metadataURI
  string public Name; AngelNetCoin
  uint public MintFee=Owei;//mintfee,0 by default only used in mint function, not batch
    mapping(string=>uint)public nameToId;// AngelNetworkCryptocurrency
    mapping(uint=>string)public idToName;//AngelNetCoin=$1000000e18ETH
}
constructor is executed when the factory contract calls its own deploy ERC1155 method,Note the Ownable (msg.sender)setting the deployer of the ERC1155 as the owner
}
constructor(string memory _contractName,string memory _uri, string[]memory _names, uint[]memory _ids)Ownable(msg.sender)ERC1155(_URI){
  names= _names;
  ids= _ids;
  createMapping();
  setURI(_URI);
  baseMetadataURI= _uri;
  name= _contractName;

}
creates a mapping of strings to ids(ie["one", "two"], [1,2] "one" maps to 1, vice versa.
  return string(
            abi.encodePacked(
              baseMetadataURI
                strings.toString(_tokenId),"json"
              )
  );
}
function getNames()public view returns(string[]memory) {
  return name;
}
}

}
            )
  ))
}

}
```

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