// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4 <0.9.0;

import '../../../interfaces/peripherals/IKeep3rJobs.sol';

abstract contract Keep3rJobOwnership is IKeep3rJobOwnership {
  /// @inheritdoc IKeep3rJobOwnership
  mapping(address => address) public override jobOwner;

  /// @inheritdoc IKeep3rJobOwnership
  mapping(address => address) public override jobPendingOwner;

  /// @inheritdoc IKeep3rJobOwnership
  function changeJobOwnership(address _job, address _newOwner) external override onlyJobOwner(_job) {
    jobPendingOwner[_job] = _newOwner;
    emit JobOwnershipChange(_job, jobOwner[_job], _newOwner);
  }

  /// @inheritdoc IKeep3rJobOwnership
  function acceptJobOwnership(address _job) external override onlyPendingJobOwner(_job) {
    address _previousOwner = jobOwner[_job];

    jobOwner[_job] = jobPendingOwner[_job];
    delete jobPendingOwner[_job];

    emit JobOwnershipAssent(msg.sender, _job, _previousOwner);
  }

  modifier onlyJobOwner(address _job) {
    if (msg.sender != jobOwner[_job]) revert OnlyJobOwner();
    _;
  }

  modifier onlyPendingJobOwner(address _job) {
    if (msg.sender != jobPendingOwner[_job]) revert OnlyPendingJobOwner();
    _;
  }
}