from __future__ import unicode_literals

from django.db import migrations


def clubs_to_gestion(apps, schema_editor):
    Association = apps.get_model('gestion', 'Association')
    Membership = apps.get_model('gestion', 'ClubUser')
    OldClub = apps.get_model('cof', 'Club')
    NewClub = apps.get_model('gestion', 'Club')

    cof_assoc = Association.objects.get(name='COF')

    memberships = []

    for oldclub in OldClub.objects.all():
        newclub = NewClub.objects.create(
            name=oldclub.name,
            description=oldclub.description,
            association=cof_assoc,
        )

        members = oldclub.membres.values_list('id', flat=True)
        respos = oldclub.respos.values_list('id', flat=True)

        for user in members:
            memberships.append(
                Membership(
                    club=newclub,
                    user_id=user,
                    has_paid=True,
                    is_respo=user in respos,
                )
            )

    Membership.objects.bulk_create(memberships)


class Migration(migrations.Migration):
    """
    This migration focus on migrating clubs data to the 'gestion' app.
    """

    dependencies = [
        ('cof', '0014_move_profile'),
        ('gestion', '0002_create_cof_bds'),
    ]

    operations = [
        # Move clubs from cof to gestion.
        migrations.RunPython(clubs_to_gestion),

        # Delete legacy Club model.
        migrations.RemoveField(
            model_name='club',
            name='membres',
        ),
        migrations.RemoveField(
            model_name='club',
            name='respos',
        ),
        migrations.DeleteModel(
            name='Club',
        ),
    ]