"""
Author: Michel Peltriaux
Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
Contact: michel.peltriaux@sgdnord.rlp.de
Created on: 15.12.20

"""
from getpass import getpass

from django.contrib.auth.models import User
from django.core.management import BaseCommand
from django.db import transaction

from konova.management.commands.setup_test_data import TEST_ORGANISATION_DATA, TEST_ROLE_GROUPS_DATA
from konova.models import RoleType, RoleGroup
from organisation.enums import RoleTypeEnum
from organisation.models import Organisation

CREATED_TEMPLATE = "{} created"


class Command(BaseCommand):
    help = "Initializes database with basic data"

    def handle(self, *args, **options):
        try:
            with transaction.atomic():
                self.__init_superuser()
                self.__init_test_organisation()
                self.__init_role_types()
                self.__init_role_groups()
        except KeyboardInterrupt:
            self.__break_line()
            exit(-1)

    def __init_superuser(self):
        """ Create a superuser by user prompt input

        Returns:

        """
        self.stdout.write(
            self.style.WARNING(
                "--- Superuser ---",
            )
        )
        username = input("Superuser name: ")
        if User.objects.filter(username=username).exists():
            self.stdout.write(
                self.style.ERROR(
                    "Name already taken!"
                )
            )
            exit(-1)
        pw = getpass("Password: ")
        pw_confirm = getpass("Confirm password : ")
        if pw != pw_confirm:
            self.stdout.write(
                self.style.ERROR(
                    "Passwords did not match!"
                )
            )
            exit(-1)

        # Create superuser
        superuser = User()
        superuser.username = username
        superuser.is_superuser = True
        superuser.is_staff = True
        superuser.set_password(pw)
        superuser.save()
        self.stdout.write(
            self.style.SUCCESS(
                "Superuser {} created".format(username)
            )
        )
        self.__break_line()

    def __init_role_types(self):
        """ Initializes available role types according to RoleTypeEnum

        Returns:

        """
        self.stdout.write(
            self.style.WARNING(
                "--- Role types ---"
            )
        )
        for role_type_enum in RoleTypeEnum:
            role_type = RoleType.objects.get_or_create(
                type=role_type_enum.value
            )[0]
            self.stdout.write(
                self.style.SUCCESS(
                    CREATED_TEMPLATE.format(role_type.type)
                )
            )
        self.__break_line()

    def __init_test_organisation(self):
        """ Creates test organisations from predefined data

        Returns:

        """
        self.stdout.write(
            self.style.WARNING(
                "--- Organisations ---"
            )
        )
        for org in TEST_ORGANISATION_DATA:
            db_org = Organisation.objects.get_or_create(
                **org
            )[0]
            self.stdout.write(
                self.style.SUCCESS(
                    CREATED_TEMPLATE.format(db_org.name)
                )
            )
        self.__break_line()

    def __init_role_groups(self):
        """ Creates test role groups from predefined data

        Returns:

        """
        self.stdout.write(
            self.style.WARNING(
                "--- Role Groups ---"
            )
        )
        for group_data in TEST_ROLE_GROUPS_DATA:
            group_data["organisation"] = Organisation.objects.get(name=group_data["organisation"])
            group_data["role"] = RoleType.objects.get(type=group_data["role"])
            group = RoleGroup.objects.get_or_create(
                **group_data
            )[0]
            self.stdout.write(
                self.style.SUCCESS(
                    CREATED_TEMPLATE.format(group.name)
                )
            )
        self.__break_line()

    def __break_line(self):
        """ Simply prints a line break

        Returns:

        """
        self.stdout.write("\n")