# -*- coding: utf-8 -*-

""" Test SFTP client """
import atexit
import tempfile
import logging
import sys
import os
import random
import string

import getpass

from mylib.sftp import SFTPClient
from mylib.scripts.helpers import get_opts_parser, add_sftp_opts
from mylib.scripts.helpers import init_logging


log = logging.getLogger('mylib.scripts.sftp_test')


def main(argv=None):  # pylint: disable=too-many-locals,too-many-statements
    """ Script main """
    if argv is None:
        argv = sys.argv[1:]

    # Options parser
    parser = get_opts_parser(just_try=True)
    add_sftp_opts(parser)

    test_opts = parser.add_argument_group('Test SFTP options')

    test_opts.add_argument(
        '-p', '--remote-upload-path',
        action="store",
        type=str,
        dest="upload_path",
        help="Remote upload path (default: on remote initial connection directory)",
    )

    options = parser.parse_args()

    # Initialize logs
    init_logging(options, 'Test SFTP client')

    if options.sftp_user and not options.sftp_password:
        options.sftp_password = getpass.getpass('Please enter SFTP password: ')

    log.info('Initialize Email client')
    sftp = SFTPClient(options=options, just_try=options.just_try)
    sftp.connect()
    atexit.register(sftp.close)

    log.debug('Create tempory file')
    test_content = b'Juste un test.'
    tmp_dir = tempfile.TemporaryDirectory()  # pylint: disable=consider-using-with
    tmp_file = os.path.join(
        tmp_dir.name,
        f'tmp{"".join(random.choice(string.ascii_lowercase) for i in range(8))}'
    )
    log.debug('Temporary file path: "%s"', tmp_file)
    with open(tmp_file, 'wb') as file_desc:
        file_desc.write(test_content)

    log.debug(
        'Upload file %s to SFTP server (in %s)', tmp_file,
        options.upload_path if options.upload_path else "remote initial connection directory")
    if not sftp.upload_file(tmp_file, options.upload_path):
        log.error('Fail to upload test file on SFTP server')
        sys.exit(1)

    log.info('Test file uploaded on SFTP server')
    remote_filepath = (
        os.path.join(options.upload_path, os.path.basename(tmp_file))
        if options.upload_path else os.path.basename(tmp_file)
    )

    with tempfile.NamedTemporaryFile() as tmp_file2:
        log.info('Retrieve test file to %s', tmp_file2.name)
        if not sftp.get_file(remote_filepath, tmp_file2.name):
            log.error('Fail to retrieve test file')
        else:
            with open(tmp_file2.name, 'rb') as file_desc:
                content = file_desc.read()
                log.debug('Read content: %s', content)
                if test_content == content:
                    log.info('Content file retrieved match with uploaded one')
                else:
                    log.error('Content file retrieved doest not match with uploaded one')

    try:
        log.info('Remotly open test file %s', remote_filepath)
        file_desc = sftp.open_file(remote_filepath)
        content = file_desc.read()
        log.debug('Read content: %s', content)
        if test_content == content:
            log.info('Content of remote file match with uploaded one')
        else:
            log.error('Content of remote file doest not match with uploaded one')
    except Exception:  # pylint: disable=broad-except
        log.exception('An exception occurred remotly opening test file %s', remote_filepath)

    if sftp.remove_file(remote_filepath):
        log.info('Test file removed on SFTP server')
    else:
        log.error('Fail to remove test file on SFTP server')