--[[

    Licensed to the Apache Software Foundation (ASF) under one
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    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
    with the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

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    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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]]

--- OpenDAL operator.
-- @classmod opendal.operator
-- @pragma nostrip

local _M = {}

--- Construct an operator based on scheme and option. Uses an table of key-value pairs to initialize
--- the operator based on provided scheme and options. For each scheme, i.e. Backend,
--- different options could be set, you may  reference the https://opendal.apache.org/docs/category/services/
--- for each service, especially for the **Configuration Part**.
-- @param string scheme the service scheme you want to specify, e.g. "fs", "s3"
-- @param table options the table to the options for this operators
-- @return table, error  opendal operator table which contain opendal operator instance, error nil if success, others otherwise
-- @function new


--- Blockingly write raw bytes to path.
---  Write the bytes into the path blockingly, returns nil if success, others otherwise
-- @param string path the designated path you want to write your bytes in
-- @param string bytes the bytes to be written
-- @return error nil if success, otherwise error message
-- @function write

--- Blockingly read raw bytes from path.
---  Read the data out from `path` blockingly by operator, returns the string if success, others otherwise
-- @param string path the designated path you want to write your bytes in
-- @return string, error read data, error nil if success, otherwise error message
-- @function read

--- Blockingly delete the object in path.
---  Delete the object in path blockingly, returns error nil
---  if success, others otherwise
-- @param string path the designated path you want to write your delete
-- @return error error nil if success, otherwise error message
-- @function delete

--- Blockingly rename the object of src to dst.
---  Rename the object in path blockingly, returns error nil
---  if success, others otherwise
-- @param string src the designated path you want to rename your source path
-- @param string dst the designated path you want to rename your destination path
-- @return error error nil if success, otherwise error message
-- @function rename

--- Blockingly create the object in path.
---  Create directory the object in path blockingly, returns error nil
---  if success, others otherwise
-- @param string path the designated path you want to create your directory
-- @return error error nil if success, otherwise error message
-- @function create_dir

--- Check whether the path exists.
-- @param string path the designated path you want to write your delete
-- @return bool, error true or false depend on operator instance and path, error nil if success, otherwise error message
-- @function is_exist

--- Stat the path, return its metadata.
-- @param string ,path the designated path you want to write your delete
-- @return table , error opendal.metadata instance table, error nil if success, otherwise error message
-- @function stat


return _M