from allauth.account.adapter import DefaultAccountAdapter
from allauth.socialaccount.models import SocialAccount
from allauth_ens.adapter import LongTermClipperAccountAdapter, get_ldap_infos

class AccountAdapter(DefaultAccountAdapter):
    def is_open_for_signup(self, request):
        return False


class SocialAccountAdapter(LongTermClipperAccountAdapter):
    def is_open_for_signup(self, request, sociallogin):
        # sociallogin.account is a SocialAccount instance.
        # See https://github.com/pennersr/django-allauth/blob/master/allauth/socialaccount/models.py

        if sociallogin.account.provider == 'clipper':
            return True

        # It returns AccountAdapter.is_open_for_signup().
        # See https://github.com/pennersr/django-allauth/blob/master/allauth/socialaccount/adapter.py
        return super().is_open_for_signup(request, sociallogin)


    # TODO : HOTFIX pour un bug d'allauth_ens
    # On remplace la déduplication des comptes faites avec "entrance_year"
    # par une déduplication sur le nom d'utilisateur
    # (Copié de allauth_ens)
    def pre_social_login(self, request, sociallogin):
        if sociallogin.account.provider != "clipper":
            return super(LongTermClipperAccountAdapter,
                         self).pre_social_login(request, sociallogin)

        clipper_uid = sociallogin.account.uid
        try:
            old_conn = SocialAccount.objects.get(provider='clipper_inactive',
                                                 uid=clipper_uid)
        except SocialAccount.DoesNotExist:
            return

        ldap_data = get_ldap_infos(clipper_uid)
        sociallogin._ldap_data = ldap_data

        if ldap_data is None or 'entrance_year' not in ldap_data:
            raise ValueError("No entrance year in LDAP data")

        old_conn_username = old_conn.user.username

        # HOTFIX ICI
        if self.get_username(clipper_uid, ldap_data) != old_conn_username:
            email = ldap_data.get('email', get_clipper_email(clipper_uid))
            remove_email(old_conn.user, email)

            return

        old_conn.provider = 'clipper'
        old_conn.save()

        sociallogin.lookup()