import re
from django.contrib.gis.geos import GEOSGeometry
from django.apps import apps
from django.template.loader import render_to_string
from django.conf import settings
from bs4 import BeautifulSoup
import markdown


def markdown_to_html(txt):
    md = markdown.Markdown(
        extensions=[
            'markdown.extensions.fenced_code',
            'markdown.extensions.codehilite(css_class=highlight,linenums=False)',
            'markdown.extensions.attr_list',
            'footnotes',
            'extra'
        ],
        output_format='html5',
        safe_mode=False
    )
    return md.convert(txt)


def convertll(lat, lon):
    pnt = GEOSGeometry('POINT({0} {1})'.format(lon, lat), srid=4326)
    pnt.transform(3857)
    return pnt.y, pnt.x


def get_latlon():
    loc = apps.get_model('locations', 'CheckIn').objects.latest()
    lat_converted, lon_converted = convertll(loc.lat, loc.lon)
    return lat_converted, lon_converted


def extract_main_image(markdown):
    soup = BeautifulSoup(markdown, 'html.parser')
    try:
        image = soup.find_all('img')[0]['id']
        img_pk = image.split('image-')[1]
        return apps.get_model('photos', 'LuxImage').objects.get(pk=img_pk)
    except IndexError:
        return None


def parse_image(s):
    soup = BeautifulSoup(s.group(), "lxml")
    for img in soup.find_all('img'):
        cl = img['class']
        if cl[0] == 'postpic' or cl[0] == 'postpicright':
            s = str(img).replace('[[base_url]]', settings.IMAGES_URL)
            return s
        else:
            image_id = img['id'].split("image-")[1]
            i = apps.get_model('photos', 'LuxImage').objects.get(pk=image_id)
            caption = False
            exif = False
            cluster_class = None
            extra = None
            if cl[0] == 'cluster':
                css_class = cl[0]
                cluster_class = cl[1]
                try:
                    if cl[2] == 'caption':
                        caption = True
                    elif cl[2] == 'exif':
                        exif = True
                    else:
                        extra = cl[2]

                    if len(cl) > 3:
                        if cl[3] == 'exif':
                            exif = True
                except:
                    pass
            elif cl[0] != 'cluster' and len(cl) > 1:
                css_class = cl[0]
                if cl[1] == 'caption':
                    caption = True
                if cl[1] == 'exif':
                    exif = True
            elif cl[0] != 'cluster' and len(cl) > 2:
                css_class = cl[0]
                if cl[1] == 'caption':
                    caption = True
                if cl[2] == 'exif':
                    exif = True
                print('caption'+str(caption))
            else:
                css_class = cl[0]
            return render_to_string("lib/img_%s.html" % css_class, {'image': i, 'caption': caption, 'exif': exif, 'cluster_class': cluster_class, 'extra':extra})


def render_images(s):
    s = re.sub('<img(.*)/>', parse_image, s)
    return s


def parse_video(s):
    soup = BeautifulSoup(s, "lxml")
    if soup.find('video'):
        return True
    return False