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

interface IFlareContractRegistry {
    /**
     * @notice Returns contract address for the given name - might be address(0)
     * @param _name             name of the contract
     */
    function getContractAddressByName(
        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 getContractAddressesByName(
        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);

    /**
     * @notice Returns all contract names and corresponding addresses
     */
    function getAllContracts()
        external
        view
        returns (string[] memory _names, address[] memory _addresses);
}