from app import app
from datetime import datetime, timedelta
import os
import caldav
import datetime
from icalendar import cal, Event
import requests
url = os.getenv('caldav_url')
username = os.getenv('username')
password = os.getenv('password')
cal_id = os.getenv('cal_id')


def daterange(start_date, end_date):
    for n in range(int((end_date - start_date).days)):
        yield datetime.datetime.date(start_date + timedelta(n))

@app.route('/')
def hello_world():
    date_obj = datetime.datetime.now()

    start_of_week = date_obj - timedelta(days=date_obj.weekday())  # Monday
    end_of_week = start_of_week + timedelta(days=7)  # Sunday

    with caldav.DAVClient(url=url, username=username, password=password) as client:
        my_principal = client.principal()

        calendars = my_principal.calendars()
        calendar = my_principal.calendar(cal_id=cal_id)
        events_fetched = calendar.date_search(
            start=start_of_week, end=end_of_week, expand=False)

        events_fetched_by_date = {}
        for event in events_fetched:
            value = event.vobject_instance.vevent.dtstart.value
            if isinstance(value, datetime.datetime):
                events_fetched_by_date[datetime.datetime.date(value)] = event
            elif isinstance(value, datetime.date):
                events_fetched_by_date[value] = event
            else:
                raise Exception

        days = []
        for single_date in daterange(start_of_week, end_of_week):
            event = events_fetched_by_date.get(single_date)
            if event:
                days.append((single_date, event.vobject_instance.vevent))
            else:
                days.append((single_date,[]))

    # breakpoint()
    pass
    # r = "<br>".join([event.vobject_instance.vevent.summary.value for event in events_fetched if event.vobject_instance.vevent.dtstart.value < datetime.now()])
    return render_template("dashboard.html", days=days, today=datetime.datetime.now())