from django.contrib.auth.models import User
from django.core.management.base import BaseCommand
import json
from pygal.models import Tag

from ._private import KEY_USERDATA_VERSION
from ._private import KEY_USERDATA_FAVOURITE
from ._private import KEY_USERDATA_TAGS


class Command(BaseCommand):
    help = 'Export userdata in JSON-Format.'

    def handle(self, *args, **options):
        data = {}
        data[KEY_USERDATA_VERSION] = 1
        for user in User.objects.all():
            favourites = user.favourite_of.all()
            if len(favourites) > 0:
                if KEY_USERDATA_FAVOURITE not in data:
                    data[KEY_USERDATA_FAVOURITE] = {}
                data[KEY_USERDATA_FAVOURITE][user.username] = [i.rel_path for i in favourites]
        for tag in Tag.objects.all():
            if KEY_USERDATA_TAGS not in data:
                data[KEY_USERDATA_TAGS] = {}
            if tag.item.rel_path not in data[KEY_USERDATA_TAGS]:
                data[KEY_USERDATA_TAGS][tag.item.rel_path] = []
            tagdata = {}
            tagdata['text'] = tag.text
            if tag.has_valid_coordinates:
                tagdata['topleft_x'] = tag.topleft_x
                tagdata['topleft_y'] = tag.topleft_y
                tagdata['bottomright_x'] = tag.bottomright_x
                tagdata['bottomright_y'] = tag.bottomright_y
            data[KEY_USERDATA_TAGS][tag.item.rel_path].append(tagdata)

        self.stdout.write(json.dumps(data, indent=4, sort_keys=True))