import argparse
from unittest import mock
import subprocess
import pytest

from locutus.restore import run_restore


def make_args(config, profile, archive, targetdir):
	args = argparse.Namespace()
	args.config = config
	args.profile = profile
	args.archive = archive
	args.targetdir = targetdir
	return args


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run')
def test_restore_by_index_success(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}
	archives = ['archA', 'archB', 'archC']
	mock_run.side_effect = [
		mock.Mock(stdout='\n'.join(archives) + '\n', returncode=0),  # borg list
		mock.Mock(returncode=0),  # borg extract
	]

	args = make_args('dummy.toml', 'dummy.rc', '1', str(tmp_path))
	rc = run_restore(args)
	assert rc == 0
	out = capsys.readouterr().out
	assert 'restored to' in out
	assert 'archB' in out
	extract_call = mock_run.call_args_list[1][0][0]
	assert extract_call == ['borg', 'extract', '/repo::archB']


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run')
def test_restore_by_name_success(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}
	mock_run.return_value.returncode = 0

	args = make_args('dummy.toml', 'dummy.rc', 'named-archive', str(tmp_path))
	rc = run_restore(args)
	assert rc == 0
	out = capsys.readouterr().out
	assert 'restored to' in out
	assert 'named-archive' in out
	call_args = mock_run.call_args[0][0]
	assert call_args == ['borg', 'extract', '/repo::named-archive']


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run')
def test_restore_by_index_out_of_range(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}
	archives = ['a', 'b']
	mock_run.return_value.stdout = '\n'.join(archives) + '\n'
	mock_run.return_value.returncode = 0

	args = make_args('dummy.toml', 'dummy.rc', '5', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'Archive index out of range' in err


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run')
def test_restore_by_index_no_archives(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}
	mock_run.return_value.stdout = ''
	mock_run.return_value.returncode = 0

	args = make_args('dummy.toml', 'dummy.rc', '0', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'No archives found' in err


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=False)
def test_restore_invalid_targetdir(mock_isdir, mock_config, capsys):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}

	args = make_args('dummy.toml', 'dummy.rc', 'archive', '/notadir')
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'does not exist or is not a directory' in err


@mock.patch('locutus.restore.LocutusConfig')
def test_restore_no_repo(mock_config, tmp_path, capsys):
	mock_config.return_value.get_repo.return_value = None
	mock_config.return_value.env = {}
	args = make_args('dummy.toml', 'dummy.rc', '0', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'No BORG_REPO configured' in err


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch(
	'subprocess.run',
	side_effect=subprocess.CalledProcessError(1, ['borg', 'extract']),
)
def test_restore_extract_calledprocesserror(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}

	args = make_args('dummy.toml', 'dummy.rc', 'named-archive', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'borg extract failed' in err


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run', side_effect=Exception('fail!'))
def test_restore_extract_generic_exception(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}

	args = make_args('dummy.toml', 'dummy.rc', 'named-archive', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'borg extract failed (unexpected): fail!' in err


def test_restore_usage_message(capsys):
	args = argparse.Namespace()
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'Usage:' in err


@mock.patch('locutus.restore.LocutusConfig')
@mock.patch('os.path.isdir', return_value=True)
@mock.patch('subprocess.run', side_effect=Exception('index explode'))
def test_restore_index_lookup_generic_exception(
	mock_run, mock_isdir, mock_config, tmp_path, capsys
):
	mock_config.return_value.get_repo.return_value = '/repo'
	mock_config.return_value.env = {}
	args = make_args('dummy.toml', 'dummy.rc', '0', str(tmp_path))
	rc = run_restore(args)
	assert rc == 1
	err = capsys.readouterr().err
	assert 'borg restore failed during archive lookup: index explode' in err