# -*- coding: utf-8 -*-
#
# Copyright (C) 2020 Radim Rehurek <me@radimrehurek.com>
#
# This code is distributed under the terms and conditions
# from the MIT License (MIT).
#
"""Implements the transport for the file:// schema."""
import io
import os.path

SCHEME = 'file'

URI_EXAMPLES = (
    './local/path/file',
    '~/local/path/file',
    'local/path/file',
    './local/path/file.gz',
    'file:///home/user/file',
    'file:///home/user/file.bz2',
)


open = io.open


def parse_uri(uri_as_string):
    local_path = extract_local_path(uri_as_string)
    return dict(scheme=SCHEME, uri_path=local_path)


def open_uri(uri_as_string, mode, transport_params):
    parsed_uri = parse_uri(uri_as_string)
    fobj = io.open(parsed_uri['uri_path'], mode)
    return fobj


def extract_local_path(uri_as_string):
    if uri_as_string.startswith('file://'):
        local_path = uri_as_string.replace('file://', '', 1)
    else:
        local_path = uri_as_string
    return os.path.expanduser(local_path)