import logging

import pytest
from flexmock import flexmock

from borgmatic.hooks import mysql as module


def test_database_names_to_dump_passes_through_name():
    extra_environment = flexmock()
    log_prefix = ''
    dry_run_label = ''

    names = module.database_names_to_dump(
        {'name': 'foo'}, extra_environment, log_prefix, dry_run_label
    )

    assert names == ('foo',)


def test_database_names_to_dump_queries_mysql_for_database_names():
    extra_environment = flexmock()
    log_prefix = ''
    dry_run_label = ''
    flexmock(module).should_receive('execute_command').with_args(
        ('mysql', '--skip-column-names', '--batch', '--execute', 'show schemas'),
        output_log_level=None,
        extra_environment=extra_environment,
    ).and_return('foo\nbar\nmysql\n').once()

    names = module.database_names_to_dump(
        {'name': 'all'}, extra_environment, log_prefix, dry_run_label
    )

    assert names == ('foo', 'bar')


def test_dump_databases_runs_mysqldump_for_each_database():
    databases = [{'name': 'foo'}, {'name': 'bar'}]
    processes = [flexmock(), flexmock()]
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/foo'
    ).and_return('databases/localhost/bar')
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo',)).and_return(
        ('bar',)
    )
    flexmock(module.dump).should_receive('create_named_pipe_for_dump')

    for name, process in zip(('foo', 'bar'), processes):
        flexmock(module).should_receive('execute_command').with_args(
            (
                'mysqldump',
                '--add-drop-database',
                '--databases',
                name,
                '>',
                'databases/localhost/{}'.format(name),
            ),
            shell=True,
            extra_environment=None,
            run_to_completion=False,
        ).and_return(process).once()

    assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == processes


def test_dump_databases_with_dry_run_skips_mysqldump():
    databases = [{'name': 'foo'}, {'name': 'bar'}]
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/foo'
    ).and_return('databases/localhost/bar')
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo',)).and_return(
        ('bar',)
    )
    flexmock(module.dump).should_receive('create_named_pipe_for_dump').never()
    flexmock(module).should_receive('execute_command').never()

    module.dump_databases(databases, 'test.yaml', {}, dry_run=True)


def test_dump_databases_runs_mysqldump_with_hostname_and_port():
    databases = [{'name': 'foo', 'hostname': 'database.example.org', 'port': 5433}]
    process = flexmock()
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/database.example.org/foo'
    )
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo',))
    flexmock(module.dump).should_receive('create_named_pipe_for_dump')

    flexmock(module).should_receive('execute_command').with_args(
        (
            'mysqldump',
            '--add-drop-database',
            '--host',
            'database.example.org',
            '--port',
            '5433',
            '--protocol',
            'tcp',
            '--databases',
            'foo',
            '>',
            'databases/database.example.org/foo',
        ),
        shell=True,
        extra_environment=None,
        run_to_completion=False,
    ).and_return(process).once()

    assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == [process]


def test_dump_databases_runs_mysqldump_with_username_and_password():
    databases = [{'name': 'foo', 'username': 'root', 'password': 'trustsome1'}]
    process = flexmock()
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/foo'
    )
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo',))
    flexmock(module.dump).should_receive('create_named_pipe_for_dump')

    flexmock(module).should_receive('execute_command').with_args(
        (
            'mysqldump',
            '--add-drop-database',
            '--user',
            'root',
            '--databases',
            'foo',
            '>',
            'databases/localhost/foo',
        ),
        shell=True,
        extra_environment={'MYSQL_PWD': 'trustsome1'},
        run_to_completion=False,
    ).and_return(process).once()

    assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == [process]


def test_dump_databases_runs_mysqldump_with_options():
    databases = [{'name': 'foo', 'options': '--stuff=such'}]
    process = flexmock()
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/foo'
    )
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo',))
    flexmock(module.dump).should_receive('create_named_pipe_for_dump')

    flexmock(module).should_receive('execute_command').with_args(
        (
            'mysqldump',
            '--stuff=such',
            '--add-drop-database',
            '--databases',
            'foo',
            '>',
            'databases/localhost/foo',
        ),
        shell=True,
        extra_environment=None,
        run_to_completion=False,
    ).and_return(process).once()

    assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == [process]


def test_dump_databases_runs_mysqldump_for_all_databases():
    databases = [{'name': 'all'}]
    process = flexmock()
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/all'
    )
    flexmock(module).should_receive('database_names_to_dump').and_return(('foo', 'bar'))
    flexmock(module.dump).should_receive('create_named_pipe_for_dump')

    flexmock(module).should_receive('execute_command').with_args(
        (
            'mysqldump',
            '--add-drop-database',
            '--databases',
            'foo',
            'bar',
            '>',
            'databases/localhost/all',
        ),
        shell=True,
        extra_environment=None,
        run_to_completion=False,
    ).and_return(process).once()

    assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == [process]


def test_database_names_to_dump_runs_mysql_with_list_options():
    database = {'name': 'all', 'list_options': '--defaults-extra-file=my.cnf'}
    flexmock(module).should_receive('execute_command').with_args(
        (
            'mysql',
            '--defaults-extra-file=my.cnf',
            '--skip-column-names',
            '--batch',
            '--execute',
            'show schemas',
        ),
        output_log_level=None,
        extra_environment=None,
    ).and_return(('foo\nbar')).once()

    assert module.database_names_to_dump(database, None, 'test.yaml', '') == ('foo', 'bar')


def test_dump_databases_errors_for_missing_all_databases():
    databases = [{'name': 'all'}]
    process = flexmock()
    flexmock(module).should_receive('make_dump_path').and_return('')
    flexmock(module.dump).should_receive('make_database_dump_filename').and_return(
        'databases/localhost/all'
    )
    flexmock(module).should_receive('database_names_to_dump').and_return(())

    with pytest.raises(ValueError):
        assert module.dump_databases(databases, 'test.yaml', {}, dry_run=False) == [process]


def test_restore_database_dump_runs_mysql_to_restore():
    database_config = [{'name': 'foo'}]
    extract_process = flexmock(stdout=flexmock())

    flexmock(module).should_receive('execute_command_with_processes').with_args(
        ('mysql', '--batch'),
        processes=[extract_process],
        output_log_level=logging.DEBUG,
        input_file=extract_process.stdout,
        extra_environment=None,
        borg_local_path='borg',
    ).once()

    module.restore_database_dump(
        database_config, 'test.yaml', {}, dry_run=False, extract_process=extract_process
    )


def test_restore_database_dump_errors_on_multiple_database_config():
    database_config = [{'name': 'foo'}, {'name': 'bar'}]

    flexmock(module).should_receive('execute_command_with_processes').never()
    flexmock(module).should_receive('execute_command').never()

    with pytest.raises(ValueError):
        module.restore_database_dump(
            database_config, 'test.yaml', {}, dry_run=False, extract_process=flexmock()
        )


def test_restore_database_dump_runs_mysql_with_hostname_and_port():
    database_config = [{'name': 'foo', 'hostname': 'database.example.org', 'port': 5433}]
    extract_process = flexmock(stdout=flexmock())

    flexmock(module).should_receive('execute_command_with_processes').with_args(
        (
            'mysql',
            '--batch',
            '--host',
            'database.example.org',
            '--port',
            '5433',
            '--protocol',
            'tcp',
        ),
        processes=[extract_process],
        output_log_level=logging.DEBUG,
        input_file=extract_process.stdout,
        extra_environment=None,
        borg_local_path='borg',
    ).once()

    module.restore_database_dump(
        database_config, 'test.yaml', {}, dry_run=False, extract_process=extract_process
    )


def test_restore_database_dump_runs_mysql_with_username_and_password():
    database_config = [{'name': 'foo', 'username': 'root', 'password': 'trustsome1'}]
    extract_process = flexmock(stdout=flexmock())

    flexmock(module).should_receive('execute_command_with_processes').with_args(
        ('mysql', '--batch', '--user', 'root'),
        processes=[extract_process],
        output_log_level=logging.DEBUG,
        input_file=extract_process.stdout,
        extra_environment={'MYSQL_PWD': 'trustsome1'},
        borg_local_path='borg',
    ).once()

    module.restore_database_dump(
        database_config, 'test.yaml', {}, dry_run=False, extract_process=extract_process
    )


def test_restore_database_dump_with_dry_run_skips_restore():
    database_config = [{'name': 'foo'}]

    flexmock(module).should_receive('execute_command_with_processes').never()

    module.restore_database_dump(
        database_config, 'test.yaml', {}, dry_run=True, extract_process=flexmock()
    )