from datetime import date, time, datetime, timedelta
import pytz
from uuid import uuid4
from os import path
from icalendar import Calendar, Event, vCalAddress, vText

from colloscope.models import *
from .create_calendar import get_calendar

LOCAL_TZ = "Europe/Paris"


def emailize(nom, first_name=None):
    if first_name is not None:
        return "{}.{}@example.com" \
            .format(
            first_name.replace(" ", "_").lower(),
            nom.replace(" ", "_").lower()
        )
    else:
        return "{}@example.com" \
            .format(nom.replace(" ", "_").lower())


def to_calendar(student, term, include_EDT: bool = True):
    p = path.abspath('./static/Base_Calendar.ics')

    with open(p) as f:
        cal = Calendar.from_ical(f.read())

    colles = term.query_colles_of_student(student)

    for colle in colles:
        event = Event()

        summary = f"Colle {colle.slot.subject} ({colle.slot.colleur})"
        event.add("summary", summary)

        start = colle.datetime
        print(start)
        fin = start + colle.slot.duration

        event.add("dtstart", start)
        event.add("dtend", fin)
        event.add("dtstamp", datetime.now())
        event.add("uid", str(uuid4()))

        event.add("location", f"{colle.slot.room} ({colle.slot.term.cls.school})")
        event.add("categories", "COLLE-" + str(colle.slot.subject))

        description = f"Groupes: {','.join(str(group) for group in colle.groups.all())}"
        event.add("description", description)

        organizer = vCalAddress(f"mailto:{emailize(colle.slot.colleur.name)}")
        organizer.params["cn"] = vText(str(colle.slot.colleur))
        organizer.params["role"] = vText("Colleur")
        event.add("organizer", organizer)

        for e in colle.final_group():
            attendee = vCalAddress(f"mailto:{emailize(e.last_name, first_name=e.first_name)}")
            attendee.params["role"] = vText("Etudiant")
            attendee.params["cn"] = vText(str(e))

            event.add("attendee", attendee, encode=0)

        cal.add_component(event)

    """
    if include_EDT:
        #TODO: get le groupe de l'étudiant et ses langue
        edt = get_calendar()

        for event in edt.walk("VEVENT"):
            cal.add_component(event)
    """

    return cal