import datetime
import json
import base64

from core.models import Berichtsheft
from core.reports import DailyReport, WeeklyReport, choose_report_kind
import core.util
from enum import Enum


class Roles(Enum):
    TRAINEE = "trainee"
    MANAGER = "manager"
    ADMIN = "admin"


class AzureUser:
    display_name: str
    id: str
    claims: list

    def __init__(self, request):
        try:
            # X-MS-CLIENT-PRINCIPAL-ID
            self.id = request.headers["X-MS-CLIENT-PRINCIPAL-ID"]

            # X-MS-CLIENT-PRINCIPAL-NAME
            self.id = request.headers["X-MS-CLIENT-PRINCIPAL-NAME"]

            # X-MS-CLIENT-PRINCIPAL
            claims_json = json.loads(
                base64.decode(request.headers["X-MS-CLIENT-PRINCIPAL"])
            )
            claims = {}

            for claim in claims_json["claims"]:
                claims[claim["typ"]] = claim["val"]

            self.claims = claims
        except:
            self.display_name = "Anon"
            self.id = "anon"

    def reports(self):
        return Berichtsheft.objects.filter(user=self.id).order_by("-year", "-week")

    def get_report_kind(self):
        # TODO : Implement
        return "weekly"

    def get_report_kind_form(self, request=None, files=None):
        return choose_report_kind(self.get_report_kind(), request, files)

    def latest_report(self):
        return self.reports().order_by("-year", "-week").first()

    def late_reports(self) -> int:
        year_now, week_now, _ = datetime.datetime.today().isocalendar()
        count = 0
        latest = self.latest_report()

        new_year, new_week = (latest.year, latest.week)

        while week_now != new_week or (week_now == new_week and year_now != new_year):
            count += 1
            new_year, new_week = core.util.next_date(new_year, new_week)

        return count

    @property
    def role(self) -> Roles:
        # TODO : Implement
        return Roles.TRAINEE