import wasm3  # type: ignore

from phasmplatform.common.exceptions import PhashPlatformNonIntMainReturnError


def run_once(wasm_bin: bytes) -> int:
    env = wasm3.Environment()
    rtime = env.new_runtime(1024 * 1024)
    rtime.load(env.parse_module(wasm_bin))
    result = rtime.find_function('main')()
    if result is None:
        return 0

    if not isinstance(result, int):
        raise PhashPlatformNonIntMainReturnError(result)

    return result