// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.2;

import "./IOracle.sol";
import "./Component.sol";
import "./IComponent.sol";
import "../services/IOracleService.sol";

abstract contract Oracle is
    IOracle, 
    Component 
{   
    IOracleService private _oracleService;

    modifier onlyQuery {
        require(
             _msgSender() == _getContractAddress("Query"),
            "ERROR:ORA-001:ACCESS_DENIED"
        );
        _;
    }

    constructor(
        bytes32 name,
        address registry
    )
        Component(name, ComponentType.Oracle, registry)
    {
        _oracleService = IOracleService(_getContractAddress("OracleService"));
        emit LogOracleCreated(address(this));
    }

    // default callback function implementations
    function _afterApprove() internal override { 
        emit LogOracleApproved(getId()); 
    }

    function _afterPropose() internal override { emit LogOracleProposed(getId()); }
    function _afterDecline() internal override { emit LogOracleDeclined(getId()); }

    function _respond(uint256 requestId, bytes memory data) internal {
        _oracleService.respond(requestId, data);
    }    
}