import datetime
from django.contrib.gis.db import models
from django.contrib.sitemaps import Sitemap
from django.conf import settings


def get_upload_path(self, filename):
    return "images/project-thumbs/%s/%s" % (datetime.datetime.today().strftime("%Y"), filename)


class Project(models.Model):
    title = models.CharField(max_length=200)
    subtitle = models.CharField(max_length=200, null=True, blank=True)
    slug = models.CharField(max_length=50)
    lede = models.TextField(blank=True)
    pub_date = models.DateTimeField('Date published')
    PUB_STATUS = (
        (0, 'Draft'),
        (1, 'Published'),
    )
    status = models.IntegerField(choices=PUB_STATUS, default=0)
    image = models.FileField(upload_to=get_upload_path, null=True, blank=True)
    model_name = models.CharField(max_length=200, null=True)

    @property
    def longitude(self):
        '''Get the site's longitude.'''
        return self.point.x

    @property
    def latitude(self):
        '''Get the site's latitude.'''
        return self.point.y

    @property
    def get_project_image(self):
        return "%s%s" % (settings.IMAGES_URL, self.image.name[7:])
        

    class Meta:
        ordering = ('-pub_date',)
        get_latest_by = 'pub_date'
        app_label = 'projects'

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return "/%s/" % (self.slug)

    def get_previous_published(self):
        return self.get_previous_by_pub_date(status__exact=1)

    def get_next_published(self):
        return self.get_next_by_pub_date(status__exact=1)


class ProjectSitemap(Sitemap):
    changefreq = "monthly"
    priority = 0.5
    protocol = "https"

    def items(self):
        return Project.objects.filter(status=1)

    def lastmod(self, obj):
        return obj.pub_date