#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-3.0-or-later
"""Mutation guardrails for the Phase-1.0J offline artifact."""

from __future__ import annotations

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


def load(path: Path):
    spec = importlib.util.spec_from_file_location("phase10j", 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_phase10j.py")
    record = validator.load_json(root / "manifests/retroarch/phase-1.0j-write-firewall-diagnostic.json")
    cases = []

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

    @case("01 artifact is exact and ineligible")
    def _(): require(validator.artifact_is_exact_and_ineligible(record["artifact"]), "artifact rejected")

    @case("02 changed artifact hash fails")
    def _():
        value = dict(record["artifact"]); value["sha256"] = "0" * 64
        require(not validator.artifact_is_exact_and_ineligible(value), "changed hash accepted")

    @case("03 execution eligibility fails")
    def _():
        value = dict(record["artifact"]); value["execution_eligible"] = True
        require(not validator.artifact_is_exact_and_ineligible(value), "eligible artifact accepted")

    @case("04 all current authorizations are false")
    def _(): require(validator.all_false(record["current_authorizations"], validator.AUTHORIZATION_FIELDS), "authorization active")

    @case("05 connection authorization fails")
    def _():
        value = dict(record["current_authorizations"]); value["ps5_connection_authorized"] = True
        require(not validator.all_false(value, validator.AUTHORIZATION_FIELDS), "connection authorized")

    @case("06 no device action occurred")
    def _(): require(validator.all_false(record["phase_actions"], validator.DEVICE_ACTION_FIELDS), "device action recorded")

    @case("07 offline build is recorded")
    def _(): require(record["phase_actions"]["target_build_performed"] is True, "build hidden")

    @case("08 J protocol is exact")
    def _(): require(validator.protocol_is_bounded(record["protocol"]), "protocol rejected")

    @case("09 protocol magic mutation fails")
    def _():
        value = dict(record["protocol"]); value["magic"] = "CHD10H01"
        require(not validator.protocol_is_bounded(value), "old magic accepted")

    @case("10 target socket claim fails")
    def _():
        value = dict(record["protocol"]); value["target_socket_created"] = True
        require(not validator.protocol_is_bounded(value), "socket creation accepted")

    @case("11 live runner J activation fails")
    def _():
        value = dict(record["protocol"]); value["live_runner_supports_j"] = True
        require(not validator.protocol_is_bounded(value), "live J runner accepted")

    @case("12 firewall stops before I04")
    def _(): require(validator.firewall_is_fail_closed(record["write_firewall"]), "firewall rejected")

    @case("13 successful write claim fails")
    def _():
        value = copy.deepcopy(record["write_firewall"]); value["write_succeeds"] = True
        require(not validator.firewall_is_fail_closed(value), "successful write accepted")

    @case("14 late stop claim fails")
    def _():
        value = copy.deepcopy(record["write_firewall"]); value["stop_before"] = "D04"
        require(not validator.firewall_is_fail_closed(value), "late stop accepted")

    @case("15 flip instrumentation is bounded")
    def _(): require(validator.flip_instrumentation_is_bounded(record["flip_diagnostic"]), "flip instrumentation rejected")

    @case("16 multiple submit claim fails")
    def _():
        value = dict(record["flip_diagnostic"]); value["submit_count_maximum_per_reached_helper"] = 2
        require(not validator.flip_instrumentation_is_bounded(value), "multiple submit accepted")

    @case("17 reporting before errno capture fails")
    def _():
        value = dict(record["flip_diagnostic"]); value["reporting_before_errno_save"] = True
        require(not validator.flip_instrumentation_is_bounded(value), "clobbered errno accepted")

    @case("18 frame zero is not a root cause claim")
    def _(): require(record["flip_diagnostic"]["root_cause_claimed"] is False, "root cause invented")

    @case("19 static audit rejects a receive import")
    def _():
        value = copy.deepcopy(record["artifact_audit"]); value["receive_import"] = True
        require(not validator.audit_is_bounded(value), "receive import accepted")

    @case("20 host tests are not hardware evidence")
    def _(): require(record["tests"]["hardware_evidence_from_phase10j"] is False, "hardware proof 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-1.0J guardrails passed: {len(cases)}")
    return 0


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