#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-3.0-or-later
"""Mutation guardrails for the consumed Phase-1.0K device result."""

from __future__ import annotations

import argparse
import importlib.util
from pathlib import Path
import sys


def load(path: Path):
    spec = importlib.util.spec_from_file_location("phase10l", path)
    assert spec and spec.loader
    module = importlib.util.module_from_spec(spec)
    sys.modules[spec.name] = module
    spec.loader.exec_module(module)
    return module


def require(value: bool, message: str) -> None:
    if not value:
        raise RuntimeError(message)


def main() -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument("--root", type=Path, required=True)
    args = parser.parse_args()
    root = args.root.resolve()
    validator = load(root / "tools/validate_retroarch_phase10l.py")
    record = validator.load_json(
        root / "manifests/retroarch/phase-1.0l-write-firewall-result-analysis.json"
    )
    cases = []

    def case(name):
        def register(function):
            cases.append((name, function))
            return function
        return register

    @case("01 protocol result is exact")
    def _(): require(validator.result_is_exact(record["protocol_result"]), "result rejected")

    @case("02 OPEN cannot replace observed MKDIR")
    def _():
        value = dict(record["protocol_result"]); value["raw_results"] = dict(value["raw_results"]); value["raw_results"]["D13_first_blocked_write"] = 1
        require(not validator.result_is_exact(value), "invented OPEN accepted")

    @case("03 write count must remain one")
    def _():
        value = dict(record["protocol_result"]); value["raw_results"] = dict(value["raw_results"]); value["raw_results"]["D13_write_block_count"] = 2
        require(not validator.result_is_exact(value), "invented second write accepted")

    @case("04 I04 cannot be invented")
    def _():
        value = dict(record["protocol_result"]); value["stages"] = list(value["stages"]); value["stages"].insert(-2, "I04"); value["frame_count"] = 10
        require(not validator.result_is_exact(value), "invented I04 accepted")

    @case("05 transport is exact one shot")
    def _(): require(validator.transport_is_one_shot(record["transport"]), "transport rejected")

    @case("06 retry fails")
    def _():
        value = dict(record["transport"]); value["retry_count"] = 1
        require(not validator.transport_is_one_shot(value), "retry accepted")

    @case("07 reconnect fails")
    def _():
        value = dict(record["transport"]); value["reconnect_count"] = 1
        require(not validator.transport_is_one_shot(value), "reconnect accepted")

    @case("08 all current authorizations are false")
    def _(): require(validator.all_false(record["current_authorizations"], validator.AUTHORIZATION_FIELDS), "authority active")

    @case("09 future execution authority fails")
    def _():
        value = dict(record["current_authorizations"]); value["device_execution_authorized"] = True
        require(not validator.all_false(value, validator.AUTHORIZATION_FIELDS), "authority accepted")

    @case("10 authorization is consumed")
    def _(): require(record["authorization"]["consumed"] is True and record["authorization"]["authority_inherited_by_future_action"] is False, "authority reusable")

    @case("11 source binding remains bounded")
    def _(): require(validator.source_binding_is_bounded(record["source_binding"]), "source binding rejected")

    @case("12 runtime path remains unobserved")
    def _(): require(record["source_binding"]["runtime_path"] == "UNOBSERVED", "runtime path invented")

    @case("13 SDL remains not reached")
    def _(): require(record["source_binding"]["sdl_video"] == "NOT_REACHED", "SDL invented")

    @case("14 cleanup remains unproven")
    def _(): require(record["source_binding"]["complete_cleanup"] == "UNPROVEN", "cleanup invented")

    @case("15 next candidate preserves firewall")
    def _(): require(record["next_offline_candidate"]["preserve_global_write_firewall"] is True, "firewall weakened")

    @case("16 next target build remains unauthorized")
    def _(): require(record["next_offline_candidate"]["target_build_authorized"] is False and record["next_offline_candidate"]["device_action_authorized"] is False, "new authority invented")

    failures = []
    for name, function in cases:
        try:
            function()
            print(f"PASS {name}")
        except Exception as error:  # noqa: BLE001 - mutation harness
            failures.append(f"{name}: {error}")
            print(f"FAIL {name}: {error}")
    if failures:
        return 1
    print(f"Phase-1.0L result guardrails passed: {len(cases)}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())