pragma solidity ^0.5.0;

import './ZosBaseAdminUpgradeabilityProxy.sol';
import './ZosInitializableUpgradeabilityProxy.sol';

/**
 * @title InitializableAdminUpgradeabilityProxy
 * @dev Extends from BaseAdminUpgradeabilityProxy with an initializer for 
 * initializing the implementation, admin, and init data.
 */
contract ZosInitializableAdminUpgradeabilityProxy is ZosBaseAdminUpgradeabilityProxy, ZosInitializableUpgradeabilityProxy {
  /**
   * Contract initializer.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  function initialize(address _logic, address _admin, bytes memory _data) public payable {
    require(_implementation() == address(0));
    ZosInitializableUpgradeabilityProxy.initialize(_logic, _data);
    assert(ADMIN_SLOT == keccak256("org.zeppelinos.proxy.admin"));
    _setAdmin(_admin);
  }
}