#
# Copyright 2018 Quantopian, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from datetime import time
from pandas import Timestamp
from pandas.tseries.holiday import (
    DateOffset,
    EasterMonday,
    GoodFriday,
    Holiday,
    MO,
    previous_friday,
    weekend_to_monday,
)
from pytz import timezone
from pytz import UTC

from .common_holidays import (
    new_years_day,
    european_labour_day,
    christmas,
    christmas_eve,
    weekend_christmas,
    boxing_day,
    weekend_boxing_day,
)
from .trading_calendar import HolidayCalendar, TradingCalendar

NewYearsDay = new_years_day(observance=weekend_to_monday)

StPatricksDay = Holiday(
    "St. Patrick's Day",
    month=3,
    day=17,
    end_date='2001',
    observance=weekend_to_monday,
)

LabourDayTo2009 = european_labour_day(
    start_date='2008',
    end_date='2010',
    observance=weekend_to_monday,
)

LabourDayFrom2019 = european_labour_day(
    start_date='2019',
    observance=weekend_to_monday,
)

MayBankHoliday = Holiday(
    'May Bank Holiday',
    month=5,
    day=1,
    end_date='2019',
    offset=DateOffset(weekday=MO(1)),
)
JuneBankHoliday = Holiday(
    'June Bank Holiday',
    month=6,
    day=1,
    end_date='2019',
    offset=DateOffset(weekday=MO(1)),
)

LastTradingDayBeforeChristmas = Holiday(
    'Last Trading Day Before Christmas',
    month=12,
    day=24,
    start_date='2010',
    observance=previous_friday,
)

ChristmasEve = christmas_eve(end_date='2005')
Christmas = christmas()
WeekendChristmas = weekend_christmas()
BoxingDay = boxing_day()
WeekendBoxingDay = weekend_boxing_day()

LastTradingDayOfCalendarYear = Holiday(
    'Last Trading Day Of Calendar Year',
    month=12,
    day=31,
    start_date='2010',
    observance=previous_friday,
)

# Ad hoc closes.
March1BadWeather = Timestamp('2018-03-01', tz=UTC)
March2BadWeather = Timestamp('2018-03-02', tz=UTC)


class XDUBExchangeCalendar(TradingCalendar):
    """
    Calendar for the Irish Stock Exchange in Dublin.

    Open Time: 8:00 AM, GMT
    Close Time: 4:28 PM, GMT

    Regularly-Observed Holidays:
      - New Years Day
      - Good Friday
      - Easter Monday
      - May Bank Holiday
      - June Bank Holiday
      - Christmas Day
      - St. Stephen's Day (Boxing Day)

    Holidays No Longer Observed:
      - St. Patrick's Day
      - Labour Day

    Early Closes:
      - Christmas Eve
      - New Year's Eve
    """
    name = 'XDUB'
    tz = timezone('Europe/Dublin')
    open_times = (
        (None, time(8, 1)),
    )
    close_times = (
        (None, time(16, 28)),
    )
    regular_early_close = time(12, 28)

    @property
    def regular_holidays(self):
        return HolidayCalendar([
            NewYearsDay,
            StPatricksDay,
            GoodFriday,
            EasterMonday,
            LabourDayTo2009,
            LabourDayFrom2019,
            MayBankHoliday,
            JuneBankHoliday,
            ChristmasEve,
            Christmas,
            WeekendChristmas,
            BoxingDay,
            WeekendBoxingDay,
        ])

    @property
    def adhoc_holidays(self):
        return [March2BadWeather]

    @property
    def special_closes(self):
        return [
            (
                self.regular_early_close,
                HolidayCalendar([
                    LastTradingDayBeforeChristmas,
                    LastTradingDayOfCalendarYear,
                ]),
            ),
        ]

    @property
    def special_closes_adhoc(self):
        return [(self.regular_early_close, [March1BadWeather])]
