// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;

/**
 * @title Singleton Factory (EIP-2470)
 * @dev Extended version from EIP-2470 for testing purposes
 * @author Ricardo Guilherme Schmidt (Status Research & Development GmbH)
 */
contract SingletonFactory {
    address public lastDeployedContract;
    event Deployed(address createdContract, bytes32 salt);

    /**
     * @notice Deploys `initCode` using `salt` for defining the deterministic address.
     * @param initCode Initialization code.
     * @param salt Arbitrary value to modify resulting address.
     * @return createdContract Created contract address.
     */
    function deploy(bytes memory initCode, bytes32 salt) public returns (address payable createdContract) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            createdContract := create2(0, add(initCode, 0x20), mload(initCode), salt)
        }

        require(createdContract != address(0), "SingletonFactory: Create2 failed");
        lastDeployedContract = createdContract;
        emit Deployed(createdContract, salt);
    }
}

{
  "compilationTarget": {
    "SingletonFactory.sol": "SingletonFactory"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}