// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9;
pragma abicoder v2;


interface IIAddressUpdater {

    /**
     * @notice Returns all contract names and corresponding addresses
     */
    function getContractNamesAndAddresses() external view returns(
        string[] memory _contractNames,
        address[] memory _contractAddresses
    );

    /**
     * @notice Returns contract address for the given name - might be address(0)
     * @param _name             name of the contract
     */
    function getContractAddress(string calldata _name) external view returns(address);

    /**
     * @notice Returns contract address for the given name hash - might be address(0)
     * @param _nameHash         hash of the contract name (keccak256(abi.encode(name))
     */
    function getContractAddressByHash(bytes32 _nameHash) external view returns(address);

    /**
     * @notice Returns contract addresses for the given names - might be address(0)
     * @param _names            names of the contracts
     */
    function getContractAddresses(string[] calldata _names) external view returns(address[] memory);

    /**
     * @notice Returns contract addresses for the given name hashes - might be address(0)
     * @param _nameHashes       hashes of the contract names (keccak256(abi.encode(name))
     */
    function getContractAddressesByHash(bytes32[] calldata _nameHashes) external view returns(address[] memory);
}