import inspect
import pathlib
from contextlib import contextmanager

import pytest
from gradio_client import Client

import gradio as gr


def pytest_configure(config):
    config.addinivalue_line(
        "markers", "flaky: mark test as flaky. Failure will not cause te"
    )


@pytest.fixture
def test_file_dir():
    return pathlib.Path(pathlib.Path(__file__).parent, "test_files")


@pytest.fixture
def io_components():
    classes_to_check = gr.components.Component.__subclasses__()
    subclasses = []

    while classes_to_check:
        subclass = classes_to_check.pop()
        if subclass in [
            gr.components.FormComponent,
            gr.State,
            gr.LoginButton,
            gr.LogoutButton,
        ]:
            continue
        children = subclass.__subclasses__()

        if children:
            classes_to_check.extend(children)
        if "value" in inspect.signature(subclass.__init__).parameters:
            subclasses.append(subclass)

    return subclasses


@pytest.fixture
def connect():
    @contextmanager
    def _connect(demo: gr.Blocks, serialize=True, **kwargs):
        _, local_url, _ = demo.launch(prevent_thread_lock=True, **kwargs)
        try:
            client = Client(local_url, serialize=serialize)
            yield client
        finally:
            client.close()
            demo.close()

    return _connect


@pytest.fixture(autouse=True)
def gradio_temp_dir(monkeypatch, tmp_path):
    """tmp_path is unique to each test function.
    It will be cleared automatically according to pytest docs: https://docs.pytest.org/en/6.2.x/reference.html#tmp-path
    """
    monkeypatch.setenv("GRADIO_TEMP_DIR", str(tmp_path))
    return tmp_path


@pytest.fixture(autouse=True)
def clear_static_files():
    """Clears all static files from the _StaticFiles class.

    This is necessary because the tests should be independent of one another.
    """
    yield
    from gradio import data_classes

    data_classes._StaticFiles.clear()