"""Offline resource compatibility checks; these are not native loading tests."""
import hashlib
import re
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
CORE = ROOT / "addons/core"
VANILLA_NORMALIZED_SHA256 = {
    "US": "d8d16abbecadc6987ca7eed3b114446d0af5753535c891fcefc20d5b2d7db583",
    "USSR": "2d3d3af74d0da33017ae3132c613fc9c19c0d20cd850a9830bb208db59e4bf25",
}
OLD_VEHICLES = {
    "US": "{D83A5EFEEF6CBF61}Configs/EntityCatalog/US/Vehicles_EntityCatalog_US.conf",
    "USSR": "{09C2ED5F617A0390}Configs/EntityCatalog/USSR/Vehicles_EntityCatalog_USSR.conf",
}


class FactionCatalogScopeTests(unittest.TestCase):
    def test_only_vehicle_catalog_changes_from_installed_faction_profiles(self):
        for side in ("US", "USSR"):
            with self.subTest(side=side):
                text = (CORE / f"Configs/ERR/Factions/{side}.conf").read_text()
                restored, count = re.subn(
                    r"\{[A-F0-9]{16}\}Configs/ERR/Factions/MissionVehicles\.conf",
                    lambda _: OLD_VEHICLES[side], text,
                )
                self.assertEqual(count, 1)
                # Pin every other vanilla field, including all inventory/group
                # references, radio/identity/callsign/rank settings and base.
                self.assertEqual(hashlib.sha256(restored.encode()).hexdigest(),
                                 VANILLA_NORMALIZED_SHA256[side])

    def test_vehicle_catalog_has_only_the_two_authored_assets(self):
        text = (CORE / "Configs/ERR/Factions/MissionVehicles.conf").read_text()
        self.assertRegex(text, r"^SCR_EntityCatalogMultiList\s*\{")
        prefabs = re.findall(r'm_sEntityPrefab\s+"([^\"]+)"', text)
        self.assertCountEqual(prefabs, [
            "{259EE7B78C51B624}Prefabs/Vehicles/Wheeled/UAZ469/UAZ469.et",
            "{DF5CCB7C0FF049F4}Prefabs/Vehicles/Helicopters/Mi8MT/Mi8MT_unarmed_transport.et",
        ])
        self.assertEqual(len(prefabs), 2)

    def test_world_uses_own_manager_without_full_vanilla_faction_inheritance(self):
        manager = (CORE / "Prefabs/ERR/FactionManager.et").read_text()
        self.assertIn("Prefabs/MP/Managers/Factions/FactionManager_Base.et", manager)
        self.assertNotIn("FactionManager_USxUSSR.et", manager)
        for side in ("US", "USSR"):
            self.assertIn(f"Configs/ERR/Factions/{side}.conf", manager)
            self.assertNotIn(f"Configs/Factions/{side}.conf", manager)
        layer = (CORE / "Worlds/ERR_Everon_Layers/default.layer").read_text()
        self.assertEqual(layer.count("Prefabs/ERR/FactionManager.et"), 1)
        self.assertNotIn("FactionManager_USxUSSR.et", layer)


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