from django.contrib.auth import get_user_model
from django.db import models

from dbsynce.models.service import Service
from dbsynce.models.resource import Resource
from tickets.models import Ticket

from dbsynce.docs.database.provider import Provider as HelpTexts
from dbsynce.docs.verbose_names.provider import Provider as VerboseName
from core.settings_vars import METASERVICE_ID

from dbsynce.lib import dicts

class Provider(models.Model):
    """
    Provider – единица описания поставщика услуг/ответственного лица за определенный ресурс (например, машину). 
    По сути - это надстройка к клиентскому аккаунту, иллюстрирующая, что данный пользователь может выступать не только в роли потребителя. 
    То есть, по тому, какие “провайдеры” находятся по идентификатору пользователя - можно установить конкретный список услуг данного пользователя.
    """

    # ID METASERVICE
    id_metaservice = models.PositiveIntegerField(
        default=METASERVICE_ID,
        verbose_name = VerboseName.id_metaservice,
        help_text=HelpTexts.id_metaservice,
    )

    # DATA
    gap = models.IntegerField(
        verbose_name = VerboseName.gap,
        help_text=HelpTexts.gap,
    )
#    gap = models.DateTimeField(
#        max_length=10,
#        help_text=HelpTexts.gap
#    )
    requirements = models.CharField(
        max_length=50,
        #TODO ADD CORRECT DEFAULT!
        default="DSMPUB",
        verbose_name = VerboseName.requirements,
        help_text=HelpTexts.requirements,
    )
    status = models.CharField(
        max_length=1,
        default="1",
        choices = list(dicts.activity_status_by_code.items()),
        verbose_name = VerboseName.status,
        help_text=HelpTexts.status,
    )
    service_status = models.CharField(
        max_length=1,
        default="2",
        choices = list(dicts.service_status_by_code.items()),
        verbose_name = VerboseName.service_status,
        help_text=HelpTexts.service_status,
    )
    location_type = models.CharField(
        max_length=1,
        choices = list(dicts.location_type_by_code.items()),
        verbose_name = VerboseName.location_type,
        help_text=HelpTexts.location_type,
    )
    default_location = models.CharField(
        max_length=30,
        verbose_name = VerboseName.default_location,
        help_text=HelpTexts.default_location,
    )

    # OTHER
    is_global = models.CharField(
        max_length=1,
        default="f",
        choices = list(dicts.is_global_by_code.items()),
        verbose_name = VerboseName.is_global,
        help_text=HelpTexts.is_global,
    )
    is_visible = models.CharField(
        max_length=1,
        default="f",
        choices = list(dicts.is_visible_by_code.items()),
        verbose_name = VerboseName.is_visible,
        help_text=HelpTexts.is_visible,
    )

    # FK
    user = models.ForeignKey(
        get_user_model(),
        on_delete=models.DO_NOTHING,
        null=True,
        verbose_name = VerboseName.user,
        help_text=HelpTexts.user
    )
    ticket_status = models.ForeignKey(
        Ticket,
        on_delete=models.DO_NOTHING,
        null=True,
        verbose_name = VerboseName.ticket_status,
        help_text=HelpTexts.ticket_status,
    )
    service = models.ForeignKey(
        Service,
        on_delete=models.DO_NOTHING,
        verbose_name = VerboseName.service,
        null=True,
        help_text=HelpTexts.service,
    )

    resource = models.ForeignKey(
        Resource,
        on_delete=models.DO_NOTHING,
        blank=True,
        null=True,
        verbose_name = VerboseName.resource,
        help_text=HelpTexts.resource,
    )

    class Meta:
        db_table = "provider"
        verbose_name = "Поставщик"
        verbose_name_plural = "Поставщики"