"""미국 시장 스케줄 (us_market_schedule.py) 테스트

테스트 시나리오:
1. is_us_market_open() — 정규장 시간 판별 (다양한 시각 모킹)
2. is_us_premarket() — 프리마켓 시간 판별
3. is_us_aftermarket() — 애프터마켓 시간 판별
4. is_us_holiday() — 공휴일 판별
5. is_dst() — 서머타임(DST) 감지
"""

import sys
import os

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

import pytest
from datetime import datetime, time, date, timedelta
from unittest.mock import patch, MagicMock

import pytz

from app.services.us_market_schedule import (
    is_us_market_open,
    is_us_premarket,
    is_us_aftermarket,
    is_us_holiday,
    is_dst,
    get_us_market_status,
    get_next_us_market_open,
    ET,
    MARKET_OPEN,
    MARKET_CLOSE,
    PREMARKET_OPEN,
    AFTERMARKET_CLOSE,
)


# ─ 헬퍼 ───────────────────────────────────────────────────────────────────────


def _make_et_datetime(year, month, day, hour, minute, weekday=None):
    """US/Eastern timezone-aware datetime 생성.

    weekday 파라미터는 무시 (실제 날짜의 요일 사용).
    """
    dt = datetime(year, month, day, hour, minute, 0)
    return ET.localize(dt)


# ─ is_us_market_open 테스트 ────────────────────────────────────────────────────


class TestIsUsMarketOpen:
    """미국 정규장 운영 시간 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_market_open_during_regular_hours(self, mock_now):
        """정규장 시간 (10:30 ET 수요일) → True"""
        # 2026-03-11 수요일 10:30 ET
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 10, 30)
        assert is_us_market_open() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_market_open_at_opening(self, mock_now):
        """정확히 09:30 ET → True"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 9, 30)
        assert is_us_market_open() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_market_closed_at_closing(self, mock_now):
        """정확히 16:00 ET → False (16:00은 폐장)"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 16, 0)
        assert is_us_market_open() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_market_closed_before_open(self, mock_now):
        """09:00 ET (개장 전) → False"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 9, 0)
        assert is_us_market_open() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_market_closed_after_hours(self, mock_now):
        """18:00 ET (폐장 후) → False"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 18, 0)
        assert is_us_market_open() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_market_closed_on_saturday(self, mock_now):
        """토요일 → False"""
        # 2026-03-14 토요일
        mock_now.return_value = _make_et_datetime(2026, 3, 14, 10, 30)
        assert is_us_market_open() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_market_closed_on_sunday(self, mock_now):
        """일요일 → False"""
        # 2026-03-15 일요일
        mock_now.return_value = _make_et_datetime(2026, 3, 15, 10, 30)
        assert is_us_market_open() is False

    @patch("app.services.us_market_schedule._now_et")
    @patch("app.services.us_market_schedule.is_us_holiday", return_value=True)
    def test_market_closed_on_holiday(self, mock_holiday, mock_now):
        """공휴일 → False"""
        mock_now.return_value = _make_et_datetime(2026, 1, 1, 10, 30)
        assert is_us_market_open() is False


# ─ is_us_premarket 테스트 ──────────────────────────────────────────────────────


class TestIsUsPremarket:
    """프리마켓 시간 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_premarket_at_4am(self, mock_now):
        """04:00 ET → 프리마켓 시작"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 4, 0)
        assert is_us_premarket() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_premarket_at_7am(self, mock_now):
        """07:00 ET → 프리마켓 중"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 7, 0)
        assert is_us_premarket() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_premarket_ends_at_market_open(self, mock_now):
        """09:30 ET → 프리마켓 종료 (정규장 시작)"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 9, 30)
        assert is_us_premarket() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_not_premarket_at_3am(self, mock_now):
        """03:00 ET → 프리마켓 전"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 3, 0)
        assert is_us_premarket() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_not_premarket_on_weekend(self, mock_now):
        """주말 프리마켓 없음"""
        mock_now.return_value = _make_et_datetime(2026, 3, 14, 7, 0)  # 토요일
        assert is_us_premarket() is False


# ─ is_us_aftermarket 테스트 ────────────────────────────────────────────────────


class TestIsUsAftermarket:
    """애프터마켓 시간 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_aftermarket_at_4pm(self, mock_now):
        """16:00 ET → 애프터마켓 시작"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 16, 0)
        assert is_us_aftermarket() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_aftermarket_at_6pm(self, mock_now):
        """18:00 ET → 애프터마켓 중"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 18, 0)
        assert is_us_aftermarket() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_aftermarket_ends_at_8pm(self, mock_now):
        """20:00 ET → 애프터마켓 종료"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 20, 0)
        assert is_us_aftermarket() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_not_aftermarket_during_regular(self, mock_now):
        """정규장 시간에는 애프터마켓 아님"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 14, 0)
        assert is_us_aftermarket() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_not_aftermarket_on_weekend(self, mock_now):
        """주말 애프터마켓 없음"""
        mock_now.return_value = _make_et_datetime(2026, 3, 14, 17, 0)  # 토요일
        assert is_us_aftermarket() is False


# ─ is_us_holiday 테스트 ───────────────────────────────────────────────────────


class TestIsUsHoliday:
    """미국 공휴일 테스트"""

    def test_new_years_day_2026(self):
        """2026년 새해 첫날 — 휴장"""
        assert is_us_holiday(datetime(2026, 1, 1)) is True

    def test_christmas_2026(self):
        """2026년 크리스마스 — 휴장"""
        assert is_us_holiday(datetime(2026, 12, 25)) is True

    def test_independence_day_observed_2026(self):
        """2026년 독립기념일 (관측일) — 휴장"""
        assert is_us_holiday(datetime(2026, 7, 3)) is True

    def test_thanksgiving_2026(self):
        """2026년 추수감사절 — 휴장"""
        assert is_us_holiday(datetime(2026, 11, 26)) is True

    def test_regular_weekday_not_holiday(self):
        """일반 평일 — 휴장 아님"""
        assert is_us_holiday(datetime(2026, 3, 10)) is False

    def test_date_object_input(self):
        """date 객체 입력도 지원"""
        assert is_us_holiday(date(2026, 1, 1)) is True
        assert is_us_holiday(date(2026, 3, 10)) is False


# ─ is_dst 테스트 ──────────────────────────────────────────────────────────────


class TestIsDst:
    """서머타임(DST) 감지 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_dst_in_summer(self, mock_now):
        """여름 (7월) → DST 적용"""
        summer_dt = ET.localize(datetime(2026, 7, 15, 12, 0))
        mock_now.return_value = summer_dt
        assert is_dst() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_no_dst_in_winter(self, mock_now):
        """겨울 (1월) → DST 미적용"""
        winter_dt = ET.localize(datetime(2026, 1, 15, 12, 0))
        mock_now.return_value = winter_dt
        assert is_dst() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_dst_in_april(self, mock_now):
        """4월 → DST 적용"""
        april_dt = ET.localize(datetime(2026, 4, 15, 12, 0))
        mock_now.return_value = april_dt
        assert is_dst() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_no_dst_in_december(self, mock_now):
        """12월 → DST 미적용"""
        dec_dt = ET.localize(datetime(2026, 12, 15, 12, 0))
        mock_now.return_value = dec_dt
        assert is_dst() is False


# ─ get_us_market_status 테스트 ────────────────────────────────────────────────


class TestGetUsMarketStatus:
    """시장 상태 요약 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_status_open(self, mock_now):
        """정규장 시간 → status='OPEN'"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 10, 30)
        status = get_us_market_status()
        assert status["status"] == "OPEN"
        assert "is_dst" in status
        assert "current_et" in status
        assert "next_open" in status

    @patch("app.services.us_market_schedule._now_et")
    def test_status_premarket(self, mock_now):
        """프리마켓 시간 → status='PREMARKET'"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 6, 0)
        status = get_us_market_status()
        assert status["status"] == "PREMARKET"

    @patch("app.services.us_market_schedule._now_et")
    def test_status_aftermarket(self, mock_now):
        """애프터마켓 시간 → status='AFTERMARKET'"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 17, 0)
        status = get_us_market_status()
        assert status["status"] == "AFTERMARKET"

    @patch("app.services.us_market_schedule._now_et")
    def test_status_closed(self, mock_now):
        """폐장 시간 → status='CLOSED'"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 22, 0)
        status = get_us_market_status()
        assert status["status"] == "CLOSED"

    @patch("app.services.us_market_schedule._now_et")
    def test_status_weekend_closed(self, mock_now):
        """주말 → status='CLOSED'"""
        mock_now.return_value = _make_et_datetime(2026, 3, 14, 10, 30)  # 토요일
        status = get_us_market_status()
        assert status["status"] == "CLOSED"


# ─ 시간 경계 테스트 ──────────────────────────────────────────────────────────


class TestTimeBoundaries:
    """시간 경계 조건 테스트"""

    @patch("app.services.us_market_schedule._now_et")
    def test_one_minute_before_open(self, mock_now):
        """09:29 ET → 프리마켓"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 9, 29)
        assert is_us_market_open() is False
        assert is_us_premarket() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_one_minute_before_close(self, mock_now):
        """15:59 ET → 정규장"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 15, 59)
        assert is_us_market_open() is True

    @patch("app.services.us_market_schedule._now_et")
    def test_premarket_start_boundary(self, mock_now):
        """03:59 ET → 프리마켓 전"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 3, 59)
        assert is_us_premarket() is False

    @patch("app.services.us_market_schedule._now_et")
    def test_aftermarket_end_boundary(self, mock_now):
        """19:59 ET → 애프터마켓"""
        mock_now.return_value = _make_et_datetime(2026, 3, 11, 19, 59)
        assert is_us_aftermarket() is True


if __name__ == "__main__":
    pytest.main([__file__, "-v"])