from typing import Iterable

from eth2spec.test.genesis import test_initialization, test_validity

from gen_base import gen_runner, gen_typing
from gen_from_tests.gen import generate_from_tests
from preset_loader import loader
from eth2spec.phase0 import spec as spec


def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typing.TestProvider:

    def prepare_fn(configs_path: str) -> str:
        presets = loader.load_presets(configs_path, config_name)
        spec.apply_constants_preset(presets)
        return config_name

    def cases_fn() -> Iterable[gen_typing.TestCase]:
        return generate_from_tests(
            runner_name='genesis',
            handler_name=handler_name,
            src=tests_src,
            fork_name='phase0'
        )

    return gen_typing.TestProvider(prepare=prepare_fn, make_cases=cases_fn)


if __name__ == "__main__":
    gen_runner.run_generator("genesis", [
        create_provider('initialization', test_initialization, 'minimal'),
        create_provider('validity', test_validity, 'minimal'),
    ])