//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;

interface IFileOperator {
    // Large storage methods
    function write(bytes memory name, bytes memory data) external payable;

    function read(bytes memory name) external view returns (bytes memory, bool);

    // return (size, # of chunks)
    function size(bytes memory name) external view returns (uint256, uint256);

    function remove(bytes memory name) external returns (uint256);

    function countChunks(bytes memory name) external view returns (uint256);

    // Chunk-based large storage methods
    function writeChunk(
        bytes memory name,
        uint256 chunkId,
        bytes memory data
    ) external payable;

    function readChunk(
        bytes memory name,
        uint256 chunkId
    ) external view returns (bytes memory, bool);

    function chunkSize(
        bytes memory name,
        uint256 chunkId
    ) external view returns (uint256, bool);

    function removeChunk(
        bytes memory name,
        uint256 chunkId
    ) external returns (bool);

    function truncate(
        bytes memory name,
        uint256 chunkId
    ) external returns (uint256);

    function refund() external;

    function destruct() external;

    function getChunkHash(
        bytes memory name,
        uint256 chunkId
    ) external view returns (bytes32);
}