"""Run the platform-independent settings contract on a real JVM.

The Android file adapter is compiled against android.jar, not executed under
desktop stubs. Device/storage integration belongs to the later APK stage.
"""

import os
from pathlib import Path
import shutil
import subprocess
import tempfile
import unittest


ROOT = Path(__file__).resolve().parents[1]
PACKAGE = ROOT / "src" / "lihont" / "two" / "settings"
HARNESS = ROOT / "tests" / "java" / "lihont" / "two" / "settings" / "SettingsModelTest.java"


class SettingsModelTest(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.javac = shutil.which("javac")
        cls.java = shutil.which("java")
        if not cls.javac or not cls.java:
            raise RuntimeError("Settings model tests require a JDK with java and javac")
        cls.temporary = tempfile.TemporaryDirectory(prefix="lihont-settings-tests-")
        cls.addClassCleanup(cls.temporary.cleanup)
        cls.classes = Path(cls.temporary.name) / "classes"
        cls.classes.mkdir()
        cls.environment = dict(os.environ)
        cls.environment.pop("JAVA_TOOL_OPTIONS", None)
        cls.run_command([
            cls.javac, "--release", "17", "-encoding", "UTF-8", "-d", str(cls.classes),
            str(PACKAGE / "ModSettings.java"),
            str(PACKAGE / "SettingsCodec.java"),
            str(PACKAGE / "SettingsRepository.java"),
            str(HARNESS),
        ])

    @classmethod
    def run_command(cls, command):
        result = subprocess.run(
            command, capture_output=True, text=True, encoding="utf-8",
            env=cls.environment, timeout=60,
        )
        if result.returncode:
            raise AssertionError(
                f"Command failed with exit {result.returncode}: {command[0]}\n"
                + result.stdout + result.stderr
            )
        return result

    def run_scenario(self, name):
        result = self.run_command([
            self.java, "-cp", str(self.classes),
            "lihont.two.settings.SettingsModelTest", name,
        ])
        self.assertEqual(result.stdout.strip(), "PASS " + name)

    def test_defaults_and_region_warning(self):
        self.run_scenario("defaults")

    def test_all_iso_countries_roundtrip(self):
        self.run_scenario("countries")

    def test_typed_inputs_reject_invalid_values(self):
        self.run_scenario("validation")

    def test_restart_policy(self):
        self.run_scenario("restart")

    def test_valid_json_and_portable_roundtrip(self):
        self.run_scenario("codec")

    def test_invalid_documents_are_rejected(self):
        self.run_scenario("invalid")

    def test_settings_persist_across_repository_instances(self):
        self.run_scenario("persistence")

    def test_active_snapshot_and_noop_write(self):
        self.run_scenario("snapshot")

    def test_reset_restores_defaults_and_persists_them(self):
        self.run_scenario("reset")

    def test_invalid_imports_preserve_memory_and_disk(self):
        self.run_scenario("atomicImport")

    def test_io_failures_are_visible_and_preserve_previous_settings(self):
        self.run_scenario("ioFailures")

    def test_corrupt_or_future_stored_data_is_not_overwritten(self):
        self.run_scenario("corruptStorage")

    def test_android_adapter_compiles_against_android_api(self):
        android_jar = ROOT / "tools" / "android.jar"
        self.assertTrue(android_jar.is_file(), "tools/android.jar must be available")
        self.run_command([
            self.javac, "--release", "17", "-encoding", "UTF-8",
            "-cp", str(android_jar) + os.pathsep + str(self.classes),
            "-d", str(self.classes), str(PACKAGE / "AndroidSettingsStorage.java"),
        ])


if __name__ == "__main__":
    unittest.main()