"""Phase 2 PoC #3 — transshipment_5stage params 카탈로그 동치성 테스트.

런타임 override 는 후속 PR 에서 활성화되므로, 이 테스트는 **DEFAULT_PARAMS
↔ 모듈 상수 ↔ seed SQL JSONB** 3 자 일치만 검증한다.
"""
from __future__ import annotations

import importlib
import json
import os
import sys
import types
import unittest

# pandas/pydantic_settings stub (다른 phase 2 테스트와 동일 관용)
if 'pandas' not in sys.modules:
    pd_stub = types.ModuleType('pandas')
    pd_stub.DataFrame = type('DataFrame', (), {})
    pd_stub.Timestamp = type('Timestamp', (), {})
    sys.modules['pandas'] = pd_stub

if 'pydantic_settings' not in sys.modules:
    stub = types.ModuleType('pydantic_settings')

    class _S:
        def __init__(self, **kw):
            for name, value in self.__class__.__dict__.items():
                if name.isupper():
                    setattr(self, name, kw.get(name, value))

    stub.BaseSettings = _S
    sys.modules['pydantic_settings'] = stub

if 'algorithms' not in sys.modules:
    pkg = types.ModuleType('algorithms')
    pkg.__path__ = [os.path.join(os.path.dirname(__file__), '..', 'algorithms')]
    sys.modules['algorithms'] = pkg

# fleet_tracker 의 GEAR_PATTERN 을 transshipment.py 상단에서 import 하므로 stub
if 'fleet_tracker' not in sys.modules:
    ft_stub = types.ModuleType('fleet_tracker')
    import re as _re
    ft_stub.GEAR_PATTERN = _re.compile(r'^xxx$')
    sys.modules['fleet_tracker'] = ft_stub

ts = importlib.import_module('algorithms.transshipment')


class TransshipmentParamsTest(unittest.TestCase):

    def test_default_values_match_module_constants(self):
        p = ts.TRANSSHIPMENT_DEFAULT_PARAMS
        self.assertEqual(p['sog_threshold_kn'], ts.SOG_THRESHOLD_KN)
        self.assertEqual(p['proximity_deg'], ts.PROXIMITY_DEG)
        self.assertEqual(p['approach_deg'], ts.APPROACH_DEG)
        self.assertEqual(p['rendezvous_min'], ts.RENDEZVOUS_MIN)
        self.assertEqual(p['pair_expiry_min'], ts.PAIR_EXPIRY_MIN)
        self.assertEqual(p['gap_tolerance_cycles'], ts.GAP_TOLERANCE_CYCLES)
        self.assertEqual(set(p['fishing_kinds']), set(ts._FISHING_KINDS))
        self.assertEqual(set(p['carrier_kinds']), set(ts._CARRIER_KINDS))
        self.assertEqual(set(p['excluded_ship_ty']), set(ts._EXCLUDED_SHIP_TY))
        self.assertEqual(list(p['carrier_hints']), list(ts._CARRIER_HINTS))

    def test_seed_sql_values_match_python_default(self):
        seed_path = os.path.join(
            os.path.dirname(__file__), '..',
            'models_core', 'seeds', 'v1_transshipment.sql',
        )
        with open(seed_path, 'r', encoding='utf-8') as f:
            sql = f.read()

        start = sql.index('$json$') + len('$json$')
        end = sql.index('$json$', start)
        raw = sql[start:end].strip()
        params = json.loads(raw)

        expected = ts.TRANSSHIPMENT_DEFAULT_PARAMS
        for scalar_key in ['sog_threshold_kn', 'proximity_deg', 'approach_deg',
                           'rendezvous_min', 'pair_expiry_min', 'gap_tolerance_cycles',
                           'min_score']:
            self.assertEqual(params[scalar_key], expected[scalar_key], scalar_key)
        for list_key in ['fishing_kinds', 'carrier_kinds', 'excluded_ship_ty',
                         'carrier_hints']:
            self.assertEqual(set(params[list_key]), set(expected[list_key]), list_key)


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