import os
import shutil
from pathlib import Path

from exec_capture import execute_capture
from exec_print_capture import execute_print_capture
from exec_print_transfer import execute_print_transfer_chunks
from transfer_inform import transfer_inform


def test():
    # test1()
    # test2()
    # test3()
    # test4()
    test5()


def test1():
    _init(1)

    returncode, out, err = execute_capture(['ls', '-la'])
    print(f'stdout:\n{out}\nstderr:\n{err}')
    print()
    returncode, out, err = execute_capture(['ls', '/foo/bar'])
    print(f'stdout:\n{out}\nstderr:\n{err}')


def test2():
    _init(2)

    returncode, out, err = execute_print_capture(['ls', '-la'])
    print()
    returncode, out, err = execute_print_capture(['ls', '/foo/bar'])


def test3():
    _init(3)

    returncode = execute_print_transfer_chunks(['ls', '-la'], Path('test/3-1'))
    print("TEST 3-2")
    returncode = execute_print_transfer_chunks(['ls', '/foo/bar'], Path('test/3-2'))
    print("TEST 3-3")
    returncode = execute_print_transfer_chunks(['cat', 'transfer_inform.py'], Path('test/3-3'),
                                               chunk_size=1024)


def test4():
    _init(4)

    transfer_inform(
        ['ls', 'test/4-rsync-error'],  # rsync src to dst
        ['ls', 'test/4-ssh-error'],  # ssh target-pc 'echo "OK" | nc -U "/path/to/unix-socket"'
        Path('test/4-UNIX-socket')
    )


def test5():
    _init(5)

    chunk_file_tmpl = Path('test/5')
    source_file = Path('transfer_inform.py')  # A python script file with some content to copy ;)
    remote_target_file = Path(f'test/5-copy-of-{source_file}')
    ssh_error_file = Path('test/5-ssh-error-while-informing-remote-pc')
    concat_script = Path('test/5-concat')

    concat_script.write_text(f'#!/usr/bin/bash\n'
                             f'echo "rsync $1 ... command output"\n'
                             f'cat "$1" >> "$2"')
    os.chmod(concat_script, 0o0755)

    # TODO:
    #   When running this test:
    #   The intentionally generated error, can be fixed by touching (creating) the missing file.

    execute_print_transfer_chunks(
        command=['cat', str(source_file)],
        chunk_file_tmpl=chunk_file_tmpl,
        chunk_transfer_fun=_chunk_transfer_fun,
        chunk_transfer_args=(ssh_error_file, concat_script, remote_target_file),
        chunk_size=512,
    )


def _chunk_transfer_fun(chunk_file: Path,
                        eof: bool,
                        ssh_error_file: Path,
                        concat_script: Path,
                        remote_target_file: Path):
    rsync_cmd = [str(concat_script), str(chunk_file), str(remote_target_file)]
    inform_cmd = ['ls',
                  chunk_file.parent.joinpath(f'5.remote.EOF={eof}'),
                  ]

    transfer_inform(
        rsync_cmd=rsync_cmd,
        inform_cmd=inform_cmd,
        user_input_file=chunk_file.parent.joinpath(f'5.SOCKET'),
    )


def _init(test_number: int):
    print(f"TEST {test_number}")
    test_dir = Path('test')
    if test_dir.exists():
        shutil.rmtree('test')
    Path('test').mkdir(exist_ok=False)


if __name__ == '__main__':
    test()