import pyperclip
import mimetypes
import os
import urllib

from adal import AuthenticationContext

import requests
import config

from datetime import datetime
from datetime import date
from datetime import timedelta
import pytz

import oauth2ms


def api_endpoint(url):
    """Convert a relative path such as /me/photo/$value to a full URI based
    on the current RESOURCE and API_VERSION settings in config.py.
    """
    if urllib.parse.urlparse(url).scheme in ['http', 'https']:
        return url # url is already complete
    return urllib.parse.urljoin(f'{config.RESOURCE}/v{config.API_VERSION}/',
                                url.lstrip('/'))


def parse_cal_date(dateStr):
    d = datetime.strptime(dateStr, "%Y-%m-%dT%H:%M:%S.0000000")
    exchangeTz = pytz.utc
    localTz = pytz.timezone('US/Central')
    return exchangeTz.localize(d).astimezone(localTz);


def format_orgmode_date(dateObj):
  return dateObj.strftime("%Y-%m-%d %H:%M")


def format_orgmode_time(dateObj):
  return dateObj.strftime("%H:%M")


def get_calendar(token):
    """Get Calendar from O365
    """
    start = date.today() - timedelta(days=config.daysHistory)
    end = date.today() + timedelta(days=config.daysFuture)
    # print(api_endpoint("/"))
    cal = requests.get(
        api_endpoint(f'me/calendarview?startdatetime={start}T00:00:00.000Z&enddatetime={end}T23:59:59.999Z&$top={config.maxEntries}&$orderby=start/dateTime'),
        headers={'Authorization':f'Bearer {token}'}
    )

    calentries = cal.json()

    for appt in calentries['value']:
        apptstart = parse_cal_date(appt['start']['dateTime'])
        apptend = parse_cal_date(appt['end']['dateTime'])
        tags = ""
        if appt['categories']:
            tags = ":" + ":".join(appt['categories']) + ":"
        else:
            tags = ":WORK:"

        if apptstart.date() == apptend.date():
            dateStr = "<" +  format_orgmode_date(apptstart) + "-" + format_orgmode_time(apptend) + ">"
        else:
            dateStr = "<" +  format_orgmode_date(apptstart) + ">--<" + format_orgmode_date(apptend) + ">"
        body = appt['bodyPreview'].translate({ord('\r'): None})

        print(f'* {dateStr} {appt["subject"]} {tags}')

        print(":PROPERTIES:")
        if appt['location']['displayName'] is not None:
            print(":LOCATION: %s" % (appt['location']['displayName']))

        if appt['onlineMeeting'] is not None:
            print(f":JOINURL: {appt['onlineMeeting']['joinUrl']}")

        print(f":RESPONSE: {appt['responseStatus']['response']}")
        print(":END:")

        print(f"{body}")

        print("")


if __name__ == '__main__':
    get_calendar(oauth2ms.token)