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// SPDX-License-Identifier: BSD-3-Clause
pragma solidity 0.8.23;

/**
 * @title Code Jar
 * @notice Deploys contract code to deterministic addresses
 * @author Compound Labs, Inc.
 */
contract CodeJar {
    /**
     * @notice Deploys the code via Code Jar, no-op if it already exists
     * @dev This call is meant to be idemponent and fairly inexpensive on a second call
     * @param code The creation bytecode of the code to save
     * @return The address of the contract that matches the input code's contructor output
     */
    function saveCode(bytes memory code) external returns (address) {
        address codeAddress = getCodeAddress(code);

        if (codeAddress.code.length > 0) {
            // Code is already deployed
            return codeAddress;
        } else {
            // The code has not been deployed here (or it was deployed and destructed).
            address script;
            assembly {
                script := create2(0, add(code, 0x20), mload(code), 0)
            }

            // Posit: these cannot fail and are purely defense-in-depth
            require(script == codeAddress);

            uint256 scriptSz;
            assembly {
                scriptSz := extcodesize(script)
            }

            // Disallow the empty code and self-destructing constructors
            // Note: Script can still self-destruct after being deployed until Dencun
            require(scriptSz > 0);

            return codeAddress;
        }
    }

    /**
     * @notice Checks if code was already deployed by CodeJar
     * @param code The runtime bytecode of the code to check
     * @return True if code already exists in Code Jar
     */
    function codeExists(bytes calldata code) external view returns (bool) {
        address codeAddress = getCodeAddress(code);

        return codeAddress.code.length > 0;
    }

    /**
     * @dev Returns the create2 address based on the creation code
     * @return The create2 address to deploy this code (via init code)
     */
    function getCodeAddress(bytes memory code) public view returns (address) {
        return address(
            uint160(uint256(keccak256(abi.encodePacked(bytes1(0xff), address(this), uint256(0), keccak256(code)))))
        );
    }
}

{
  "remappings": [
    "test/=test/",
    "codejar/=src/codejar/",
    "legend-scripts/=src/legend-scripts/",
    "quark-core/=src/quark-core/",
    "quark-core-scripts/=src/quark-core-scripts/",
    "quark-factory/=src/quark-factory/",
    "quark-proxy/=src/quark-proxy/",
    "@uniswap/=lib/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "v3-core/=lib/v3-core/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": true,
  "libraries": {}
}

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[{"inputs":[{"internalType":"bytes","name":"code","type":"bytes"}],"name":"codeExists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"code","type":"bytes"}],"name":"getCodeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"code","type":"bytes"}],"name":"saveCode","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"}]

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