from typing import Iterable
from importlib import reload

from gen_base import gen_runner, gen_typing
from gen_from_tests.gen import generate_from_tests

from eth2spec.test.context import PHASE0
from eth2spec.test.phase0.finality import test_finality
from eth2spec.config import config_util
from eth2spec.phase0 import spec as spec_phase0
from eth2spec.phase1 import spec as spec_phase1
from eth2spec.utils import bls


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

    def prepare_fn(configs_path: str) -> str:
        config_util.prepare_config(configs_path, config_name)
        reload(spec_phase0)
        reload(spec_phase1)
        bls.use_milagro()
        return config_name

    def cases_fn() -> Iterable[gen_typing.TestCase]:
        return generate_from_tests(
            runner_name='finality',
            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("finality", [
        create_provider('finality', test_finality, 'minimal'),
        create_provider('finality', test_finality, 'mainnet'),
    ])