# -*- coding: utf-8 -*-

from django.db import models

class Project(models.Model):
    """ Model representing a citavi project. """
    name = models.CharField(max_length=255)
    description = models.TextField()
    associated_filename = models.CharField(max_length=255, blank=True, null=True)

    def __unicode__(self):
        temp = unicode(self.name)
        if self.associated_filename:
            temp += u" (" + unicode(self.associated_filename) + u")"
        else:
            temp += u" (empty)"
        return temp


class PersonGlobalIdentity(models.Model):
    """ Model representing a global person identity in django. Can be used to link any foreign identity to it. """
    type = models.CharField(max_length=255)
    # TODO: Extend this for further stuff - maybe vivo external  url or something?

    def __unicode__(self):
        from service.Mapper import person_mapper
        return u"<PersonGlobalIdentity repr='" + person_mapper.get_representation_for_global_identity(self) + u"', ID=" + unicode(self.id) + u", type=" + unicode(self.type) + u">"


class CitaviProjectIdentity(models.Model):
    """ Model representing an identity from a citavi project. """
    global_identity = models.ForeignKey(PersonGlobalIdentity, blank=True, null=True, db_index=True)
    project = models.ForeignKey(Project, blank=False, null=False, db_index=True)
    citavi_uuid = models.CharField(max_length=255, blank=False, null=False, db_index=True)
    preferred = models.BooleanField()

    def __unicode__(self):
        return u"<CitaviProjectIdentity project=" + unicode(self.project) + u", citavi_uuid=" + unicode(self.citavi_uuid) + u", global_identity=" + unicode(self.global_identity) + u", preferred=" + unicode(self.preferred) + u">"