import json
from pathlib import Path
import unittest
from unittest.mock import patch

from crawlers import cmsolar, hyundai, kremc, nrems, sun_wms


FIXTURES = Path(__file__).resolve().parent / "fixtures"


def load_json(name):
    with (FIXTURES / name).open(encoding="utf-8") as fixture_file:
        return json.load(fixture_file)


def load_text(name):
    return (FIXTURES / name).read_text(encoding="utf-8")


class FakeResponse:
    def __init__(self, *, status_code=200, data=None, text="", headers=None):
        self.status_code = status_code
        self._data = data or {}
        self.text = text
        self.headers = headers or {}
        self.encoding = None

    def json(self):
        return self._data


class SequenceSession:
    def __init__(self, *, post_responses=None, get_responses=None):
        self.post_responses = list(post_responses or [])
        self.get_responses = list(get_responses or [])

    def post(self, *_args, **_kwargs):
        if not self.post_responses:
            raise AssertionError("unexpected POST request")
        return self.post_responses.pop(0)

    def get(self, *_args, **_kwargs):
        if not self.get_responses:
            raise AssertionError("unexpected GET request")
        return self.get_responses.pop(0)


class HistoryResponseFixtureTest(unittest.TestCase):
    def test_nrems_daily_json_fixture(self):
        session = SequenceSession(post_responses=[
            FakeResponse(data=load_json("nrems_daily.json")),
        ])
        plant = {
            "id": "nrems-03",
            "name": "3호기",
            "auth": {"pscode": "fixture"},
            "options": {"is_split": False},
        }

        with patch.object(nrems, "create_session", return_value=session):
            result = nrems.fetch_history_daily(plant, "2026-08-05", "2026-08-05")

        self.assertEqual(result, [{
            "plant_id": "nrems-03",
            "date": "2026-08-05",
            "generation_kwh": 121.5,
        }])

    def test_kremc_daily_json_fixture(self):
        session = SequenceSession(
            post_responses=[FakeResponse(data=load_json("kremc_login.json"))],
            get_responses=[FakeResponse(data=load_json("kremc_daily.json"))],
        )
        plant = {
            "id": "kremc-05",
            "name": "5호기",
            "auth": {"user_id": "fixture", "password": "fixture"},
            "system": {"login_url": "https://fixture/login", "api_base": "https://fixture"},
            "options": {},
        }

        with patch.object(kremc, "create_session", return_value=session):
            result = kremc.fetch_history_daily(plant, "2026-08-05", "2026-08-05")

        self.assertEqual(result[0]["date"], "2026-08-05")
        self.assertEqual(result[0]["generation_kwh"], 53.25)

    def test_hyundai_daily_json_fixture(self):
        session = SequenceSession(
            post_responses=[FakeResponse(headers={"x-auth-token": "fixture-token"})],
            get_responses=[FakeResponse(data=load_json("hyundai_daily.json"))],
        )
        plant = {
            "id": "hyundai-08",
            "name": "8호기",
            "auth": {"user_id": "fixture", "password": "fixture", "site_id": "fixture"},
            "system": {"base_url": "https://fixture", "login_path": "/login"},
        }

        with patch.object(hyundai, "create_session", return_value=session):
            result = hyundai.fetch_history_daily(plant, "2026-08-05", "2026-08-05")

        self.assertEqual(result, [{
            "plant_id": "hyundai-08",
            "date": "2026-08-05",
            "generation_kwh": 133.6,
        }])

    def test_sun_wms_daily_html_fixture(self):
        session = SequenceSession(
            post_responses=[FakeResponse()],
            get_responses=[FakeResponse(text=load_text("sun_wms_daily.html"))],
        )
        plant = {
            "id": "sunwms-06",
            "name": "6호기",
            "auth": {"payload_id": "fixture", "payload_pw": "fixture"},
            "system": {
                "login_url": "https://fixture/login",
                "base_url": "https://fixture",
                "statics_url": "https://fixture/statics",
            },
        }

        with patch("crawlers.base.create_session", return_value=session):
            result = sun_wms.fetch_history_daily(plant, "2026-08-05", "2026-08-05")

        self.assertEqual(result[0]["date"], "2026-08-05")
        self.assertEqual(result[0]["generation_kwh"], 52.59)

    def test_cmsolar_daily_html_fixture(self):
        session = SequenceSession(
            post_responses=[FakeResponse()],
            get_responses=[
                FakeResponse(),
                FakeResponse(text=load_text("cmsolar_daily.html")),
            ],
        )
        plant = {
            "id": "cmsolar-10",
            "name": "10호기",
            "auth": {"login_id": "fixture", "login_pw": "fixture", "site_no": "fixture"},
            "system": {"login_url": "https://fixture/login", "api_url": "https://fixture"},
        }

        with patch.object(cmsolar, "create_session", return_value=session):
            result = cmsolar.fetch_history_daily(plant, "2026-08-05", "2026-08-05")

        self.assertEqual(result[0]["date"], "2026-08-05")
        self.assertEqual(result[0]["generation_kwh"], 1051.25)


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