from django.db import models

from geonode.base.models import ResourceBase
from geonode.groups.models import GroupProfile


class Geocollection(models.Model):
    """
    A collection is a set of resources linked to a GeoNode group
    """
    group = models.ForeignKey(GroupProfile, related_name='group_collections', on_delete=models.CASCADE)
    resources = models.ManyToManyField(ResourceBase, related_name='resource_collections')
    name = models.CharField(max_length=128, unique=True)
    slug = models.SlugField(max_length=128, unique=True)

    def __str__(self):
        return self.name

    class Meta:
        permissions = (
            ('access_geocollection', 'Can view geocollection'),
        )