from allauth.socialaccount.models import SocialAccount
from django.contrib.auth.models import User
from django.db import models
from django.db.models.signals import post_delete, post_save
from django.dispatch import receiver
from django.utils.translation import ugettext_lazy as _

from bda.models import Spectacle
from gestioncof.petits_cours_models import choices_length
from utils.models import NullCharField

TYPE_COMMENT_FIELD = (("text", _("Texte long")), ("char", _("Texte court")))


class CofProfile(models.Model):
    STATUS_EXTE = "exterieur"
    STATUS_1A = "1A"
    STATUS_2A = "2A"
    STATUS_3A = "3A"
    STATUS_4A = "4A"
    STATUS_ARCHI = "archicube"
    STATUS_DOCTORANT = "doctorant"
    STATUS_CST = "CST"
    STATUS_PEI = "PEI"

    OCCUPATION_CHOICES = (
        (STATUS_EXTE, _("Extérieur")),
        (STATUS_1A, _("1A")),
        (STATUS_2A, _("2A")),
        (STATUS_3A, _("3A")),
        (STATUS_4A, _("4A")),
        (STATUS_ARCHI, _("Archicube")),
        (STATUS_DOCTORANT, _("Doctorant")),
        (STATUS_CST, _("CST")),
        (STATUS_PEI, _("PEI")),
    )

    COTIZ_ETUDIANT = "etudiant"
    COTIZ_NORMALIEN = "normalien"
    COTIZ_EXTE = "exterieur"
    COTIZ_GRATIS = "gratis"

    TYPE_COTIZ_CHOICES = (
        (COTIZ_ETUDIANT, _("Normalien étudiant")),
        (COTIZ_NORMALIEN, _("Normalien élève")),
        (COTIZ_EXTE, _("Extérieur")),
        (COTIZ_GRATIS, _("Gratuit")),
    )

    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name="profile")
    login_clipper = NullCharField(
        _("Login clipper"), max_length=32, blank=True, unique=True, default=""
    )
    is_cof = models.BooleanField("Membre du COF", default=False)
    phone = models.CharField("Téléphone", max_length=20, blank=True)
    occupation = models.CharField(
        _("Occupation"),
        default="1A",
        choices=OCCUPATION_CHOICES,
        max_length=choices_length(OCCUPATION_CHOICES),
    )
    departement = models.CharField(_("Département"), max_length=50, blank=True)
    type_cotiz = models.CharField(
        _("Type de cotisation"),
        default="normalien",
        choices=TYPE_COTIZ_CHOICES,
        max_length=choices_length(TYPE_COTIZ_CHOICES),
    )
    mailing_cof = models.BooleanField("Recevoir les mails COF", default=False)
    mailing_bda = models.BooleanField("Recevoir les mails BdA", default=False)
    mailing_unernestaparis = models.BooleanField(
        "Recevoir les mails unErnestAParis", default=False
    )
    mailing_bda_revente = models.BooleanField(
        "Recevoir les mails de revente de places BdA", default=False
    )
    comments = models.TextField("Commentaires visibles par l'utilisateur", blank=True)
    is_buro = models.BooleanField("Membre du Burô", default=False)
    petits_cours_accept = models.BooleanField(
        "Recevoir des petits cours", default=False
    )
    petits_cours_remarques = models.TextField(
        _("Remarques et précisions pour les petits cours"), blank=True, default=""
    )

    class Meta:
        verbose_name = "Profil COF"
        verbose_name_plural = "Profils COF"

    def __str__(self):
        return self.user.username

    def save(self, *args, **kwargs):
        created = self.pk is None
        res = super().save(*args, **kwargs)
        self.sync_clipper_connections(created=created)
        return res

    def sync_clipper_connections(self, created):
        """
        Update the clipper connections of the user according to the value of
        `login_clipper`.

        If empty, all clipper connections are removed.

        See also `sync_clipper…` signals handlers (in `signals` module). They
        sync `login_clipper` from the clipper connections.

        Raises
            IntegrityError: login_clipper is already used by another user.
        """
        user, clipper = self.user, self.login_clipper
        conns = user.socialaccount_set
        clipper_conns = conns.filter(provider="clipper")

        if created and clipper:
            conns.create(provider="clipper", uid=clipper)
            return

        if clipper:
            try:
                # If a clipper connection already exists with the uid, call
                # save to update last_login value (an auto_now field).
                conn = clipper_conns.get(uid=clipper)
                conn.save()
            except SocialAccount.DoesNotExist:
                # Nothing prevents the user from having multiple clipper
                # connections. Let's update the most recently used with the
                # given identifier. If none exists, create it.
                try:
                    conn = clipper_conns.latest("last_login")
                    if conn.uid != clipper:
                        conn.uid = clipper
                        conn.save(update_fields=["uid"])
                except SocialAccount.DoesNotExist:
                    conns.create(provider="clipper", uid=clipper)
        else:
            clipper_conns.delete()


@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        CofProfile.objects.get_or_create(user=instance)


@receiver(post_delete, sender=CofProfile)
def post_delete_user(sender, instance, *args, **kwargs):
    instance.user.delete()


class Club(models.Model):
    name = models.CharField("Nom", max_length=200, unique=True)
    description = models.TextField("Description", blank=True)
    respos = models.ManyToManyField(User, related_name="clubs_geres", blank=True)
    membres = models.ManyToManyField(User, related_name="clubs", blank=True)

    def __str__(self):
        return self.name


class Event(models.Model):
    title = models.CharField("Titre", max_length=200)
    location = models.CharField("Lieu", max_length=200)
    start_date = models.DateTimeField("Date de début", blank=True, null=True)
    end_date = models.DateTimeField("Date de fin", blank=True, null=True)
    description = models.TextField("Description", blank=True)
    image = models.ImageField("Image", blank=True, null=True, upload_to="imgs/events/")
    registration_open = models.BooleanField("Inscriptions ouvertes", default=True)
    old = models.BooleanField("Archiver (événement fini)", default=False)

    class Meta:
        verbose_name = "Événement"

    def __str__(self):
        return self.title


class EventCommentField(models.Model):
    event = models.ForeignKey(
        Event, on_delete=models.CASCADE, related_name="commentfields"
    )
    name = models.CharField("Champ", max_length=200)
    fieldtype = models.CharField(
        "Type", max_length=10, choices=TYPE_COMMENT_FIELD, default="text"
    )
    default = models.TextField("Valeur par défaut", blank=True)

    class Meta:
        verbose_name = "Champ"

    def __str__(self):
        return self.name


class EventCommentValue(models.Model):
    commentfield = models.ForeignKey(
        EventCommentField, on_delete=models.CASCADE, related_name="values"
    )
    registration = models.ForeignKey(
        "EventRegistration", on_delete=models.CASCADE, related_name="comments"
    )
    content = models.TextField("Contenu", blank=True, null=True)

    def __str__(self):
        return "Commentaire de %s" % self.commentfield


class EventOption(models.Model):
    event = models.ForeignKey(Event, on_delete=models.CASCADE, related_name="options")
    name = models.CharField("Option", max_length=200)
    multi_choices = models.BooleanField("Choix multiples", default=False)

    class Meta:
        verbose_name = "Option"

    def __str__(self):
        return self.name


class EventOptionChoice(models.Model):
    event_option = models.ForeignKey(
        EventOption, on_delete=models.CASCADE, related_name="choices"
    )
    value = models.CharField("Valeur", max_length=200)

    class Meta:
        verbose_name = "Choix"
        verbose_name_plural = "Choix"

    def __str__(self):
        return self.value


class EventRegistration(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    event = models.ForeignKey(Event, on_delete=models.CASCADE)
    options = models.ManyToManyField(EventOptionChoice)
    filledcomments = models.ManyToManyField(
        EventCommentField, through=EventCommentValue
    )
    paid = models.BooleanField("A payé", default=False)

    class Meta:
        verbose_name = "Inscription"
        unique_together = ("user", "event")

    def __str__(self):
        return "Inscription de {} à {}".format(self.user, self.event.title)


class Survey(models.Model):
    title = models.CharField("Titre", max_length=200)
    details = models.TextField("Détails", blank=True)
    survey_open = models.BooleanField("Sondage ouvert", default=True)
    old = models.BooleanField("Archiver (sondage fini)", default=False)

    class Meta:
        verbose_name = "Sondage"

    def __str__(self):
        return self.title


class SurveyQuestion(models.Model):
    survey = models.ForeignKey(
        Survey, on_delete=models.CASCADE, related_name="questions"
    )
    question = models.CharField("Question", max_length=200)
    multi_answers = models.BooleanField("Choix multiples", default=False)

    class Meta:
        verbose_name = "Question"

    def __str__(self):
        return self.question


class SurveyQuestionAnswer(models.Model):
    survey_question = models.ForeignKey(
        SurveyQuestion, on_delete=models.CASCADE, related_name="answers"
    )
    answer = models.CharField("Réponse", max_length=200)

    class Meta:
        verbose_name = "Réponse"

    def __str__(self):
        return self.answer


class SurveyAnswer(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    survey = models.ForeignKey(Survey, on_delete=models.CASCADE)
    answers = models.ManyToManyField(SurveyQuestionAnswer, related_name="selected_by")

    class Meta:
        verbose_name = "Réponses"
        unique_together = ("user", "survey")

    def __str__(self):
        return "Réponse de %s sondage %s" % (
            self.user.get_full_name(),
            self.survey.title,
        )


class CalendarSubscription(models.Model):
    token = models.UUIDField()
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    other_shows = models.ManyToManyField(Spectacle)
    subscribe_to_events = models.BooleanField(default=True)
    subscribe_to_my_shows = models.BooleanField(default=True)

    def __str__(self):
        return "Calendrier de %s" % self.user.get_full_name()