// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.8.0;

import "../signature/SignatureChecker.sol";

contract ContractSignerYes is IERC1271 {
  function isValidSignature(
    bytes32,
    bytes memory
  ) external pure override returns (bytes4) {
    return 0x1626ba7e;
  }
}

contract ContractSignerNo is IERC1271 {
  function isValidSignature(
    bytes32,
    bytes memory
  ) external pure override returns (bytes4) {
    return 0x33333333;
  }
}

contract ContractSignerMaybe is IERC1271 {
  function isValidSignature(
    bytes32,
    bytes memory contractSpecificSignature
  ) external pure override returns (bytes4) {
    bool isValid = contractSpecificSignature.length == 6 &&
      bytes6(contractSpecificSignature) == 0x001122334455;

    return isValid ? bytes4(0x1626ba7e) : bytes4(0x33333333);
  }
}

contract ContractSignerOnlyEmpty is IERC1271 {
  function isValidSignature(
    bytes32,
    bytes memory contractSpecificSignature
  ) external pure override returns (bytes4) {
    bool isValid = contractSpecificSignature.length == 0;
    return isValid ? bytes4(0x1626ba7e) : bytes4(0x33333333);
  }
}

contract ContractSignerFaulty {}

contract ContractSignerReturnSize {
  function isValidSignature(
    bytes32,
    bytes memory
  ) external pure returns (bytes2) {
    return 0x1626;
  }
}

contract TestSignature is SignatureChecker {
  event Hello(address signer);

  event Goodbye(address signer);

  function hello() public {
    (, address signer) = moduleTxSignedBy();
    emit Hello(signer);
  }

  function goodbye(uint256, bytes memory) public {
    (, address signer) = moduleTxSignedBy();
    emit Goodbye(signer);
  }
}