import pytest

from briefcase.exceptions import BriefcaseCommandError


def create_file_and_parents(path, content):
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(content, encoding="utf-8")


def test_src_is_used_by_default(convert_command):
    module_path = convert_command.base_path / "src" / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info


def test_flat_is_used_if_src_name_is_wrong(convert_command):
    module_path = convert_command.base_path / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info


def test_fallback_is_used_if_no_src_or_flat(convert_command):
    module_path = convert_command.base_path / "something/module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info


def test_src_is_preferred_over_flat(convert_command):
    module_path = convert_command.base_path / "src" / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    flat_module_path = convert_command.base_path / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info
    assert repr(flat_module_path) not in info


def test_flat_is_preferred_over_fallback(convert_command):
    module_path = convert_command.base_path / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    fallback_module_path = convert_command.base_path / "something/module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info
    assert repr(fallback_module_path) not in info


def test_flat_is_used_if_src_is_wrong(convert_command):
    module_path = convert_command.base_path / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    wrong_module_path = convert_command.base_path / "src" / "different_module_name"
    create_file_and_parents(wrong_module_path / "__main__.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info
    assert repr(module_path.name) in info


def test_flat_is_used_if_src_doesnt_have_main_file(convert_command):
    module_path = convert_command.base_path / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    wrong_module_path = convert_command.base_path / "src" / "module_name"
    create_file_and_parents(wrong_module_path / "not_main.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info
    assert repr(module_path.name) in info


def test_fallback_is_used_if_flat_doesnt_have_main_file(convert_command):
    module_path = convert_command.base_path / "something" / "module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    wrong_module_path = convert_command.base_path / "module_name"
    create_file_and_parents(wrong_module_path / "not_main.py", "")
    default, info = convert_command.get_source_dir_hint("module-name", "module_name")
    assert default == str(module_path.relative_to(convert_command.base_path)).replace(
        "\\", "/"
    )
    assert repr(default) in info
    assert (
        repr(str(module_path.relative_to(convert_command.base_path))).replace(
            r"\\", "/"
        )
        in info
    )


def test_exception_is_raised_if_no_source_dir(convert_command):
    module_path = convert_command.base_path / "src" / "different_module_name"
    create_file_and_parents(module_path / "__main__.py", "")
    with pytest.raises(BriefcaseCommandError):
        convert_command.get_source_dir_hint("module-name", "module_name")


def test_exception_is_raised_if_no_source_dir_with_main(convert_command):
    module_path = convert_command.base_path / "src" / "module_name"
    create_file_and_parents(module_path / "not_main.py", "")
    with pytest.raises(BriefcaseCommandError):
        convert_command.get_source_dir_hint("module-name", "module_name")