Move ScriptUtils from aave-helpers (#40)

src/contracts/utils/ScriptUtils.sol

@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import {Script} from 'forge-std/Script.sol';
+import {ChainIds} from './ChainHelpers.sol';
+
+/**
+ * Helper contract to enforce correct chain selection in scripts
+ */
+abstract contract WithChainIdValidation is Script {
+  constructor(uint256 chainId) {
+    require(block.chainid == chainId, 'CHAIN_ID_MISMATCH');
+  }
+
+  modifier broadcast() {
+    vm.startBroadcast();
+    _;
+    vm.stopBroadcast();
+  }
+}
+
+abstract contract EthereumScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.MAINNET) {}
+}
+
+abstract contract OptimismScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.OPTIMISM) {}
+}
+
+abstract contract ArbitrumScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.ARBITRUM) {}
+}
+
+abstract contract PolygonScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.POLYGON) {}
+}
+
+abstract contract AvalancheScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.AVALANCHE) {}
+}
+
+abstract contract FantomScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.FANTOM) {}
+}
+
+abstract contract HarmonyScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.HARMONY) {}
+}
+
+abstract contract MetisScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.METIS) {}
+}
+
+abstract contract BaseScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.BASE) {}
+}
+
+abstract contract BNBScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.BNB) {}
+}
+
+abstract contract GnosisScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.GNOSIS) {}
+}
+
+abstract contract ScrollScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.SCROLL) {}
+}
+
+abstract contract PolygonZkEvmScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.ZK_EVM) {}
+}
+
+abstract contract SepoliaScript is WithChainIdValidation {
+  constructor() WithChainIdValidation(ChainIds.SEPOLIA) {}
+}
+
+library Create2Utils {
+  // https://github.com/safe-global/safe-singleton-factory
+  address public constant CREATE2_FACTORY = 0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7;
+
+  function create2Deploy(
+    bytes32 salt,
+    bytes memory bytecode,
+    bytes memory arguments
+  ) internal returns (address) {
+    if (isContractDeployed(CREATE2_FACTORY) == false) {
+      revert('MISSING_CREATE2_FACTORY');
+    }
+    address computed = computeCreate2Address(salt, bytecode, arguments);
+
+    if (isContractDeployed(computed)) {
+      return computed;
+    } else {
+      bytes memory creationBytecode = abi.encodePacked(salt, abi.encodePacked(bytecode, arguments));
+      bytes memory returnData;
+      (, returnData) = CREATE2_FACTORY.call(creationBytecode);
+      address deployedAt = address(uint160(bytes20(returnData)));
+      require(deployedAt == computed, 'failure at create2 address derivation');
+      return deployedAt;
+    }
+  }
+
+  function create2Deploy(bytes32 salt, bytes memory bytecode) internal returns (address) {
+    if (isContractDeployed(CREATE2_FACTORY) == false) {
+      revert('MISSING_CREATE2_FACTORY');
+    }
+    address computed = computeCreate2Address(salt, bytecode);
+
+    if (isContractDeployed(computed)) {
+      return computed;
+    } else {
+      bytes memory creationBytecode = abi.encodePacked(salt, bytecode);
+      bytes memory returnData;
+      (, returnData) = CREATE2_FACTORY.call(creationBytecode);
+      address deployedAt = address(uint160(bytes20(returnData)));
+      require(deployedAt == computed, 'failure at create2 address derivation');
+      return deployedAt;
+    }
+  }
+
+  function isContractDeployed(address _addr) internal view returns (bool isContract) {
+    return (_addr.code.length > 0);
+  }
+
+  function computeCreate2Address(bytes32 salt, bytes32 initcodeHash)
+    internal
+    pure
+    returns (address)
+  {
+    return
+      addressFromLast20Bytes(
+        keccak256(abi.encodePacked(bytes1(0xff), CREATE2_FACTORY, salt, initcodeHash))
+      );
+  }
+
+  function computeCreate2Address(bytes32 salt, bytes memory bytecode)
+    internal
+    pure
+    returns (address)
+  {
+    return computeCreate2Address(salt, keccak256(abi.encodePacked(bytecode)));
+  }
+
+  function computeCreate2Address(
+    bytes32 salt,
+    bytes memory bytecode,
+    bytes memory arguments
+  ) internal pure returns (address) {
+    return computeCreate2Address(salt, keccak256(abi.encodePacked(bytecode, arguments)));
+  }
+
+  function addressFromLast20Bytes(bytes32 bytesValue) internal pure returns (address) {
+    return address(uint160(uint256(bytesValue)));
+  }
+}