import re
from bs4 import BeautifulSoup
from io import BytesIO
from zipfile import ZipFile

from django.utils.translation import gettext as _

from cookbook.helper.ingredient_parser import parse, get_food, get_unit
from cookbook.integration.integration import Integration
from cookbook.models import Recipe, Step, Food, Unit, Ingredient, Keyword


class RecipeKeeper(Integration):

    def import_file_name_filter(self, zip_info_object):
        return re.match(r'^recipes.html$', zip_info_object.filename)

    def split_recipe_file(self, file):
        recipe_html = BeautifulSoup(file, 'html.parser')
        return recipe_html.find_all('div', class_='recipe-details')

    def get_recipe_from_file(self, file):
        # 'file' comes is as a beautifulsoup object
        recipe = Recipe.objects.create(name=file.find("h2", {"itemprop": "name"}).text.strip(), created_by=self.request.user, internal=True, space=self.request.space, )

        # add 'Courses' and 'Categories' as keywords
        for course in file.find_all("span", {"itemprop": "recipeCourse"}):
            keyword, created = Keyword.objects.get_or_create(name=course.text, space=self.request.space)
            recipe.keywords.add(keyword)

        for category in file.find_all("meta", {"itemprop": "recipeCategory"}):
            keyword, created = Keyword.objects.get_or_create(name=category.get("content"), space=self.request.space)
            recipe.keywords.add(keyword)

        # TODO: import prep and cook times
        # Recipe Keeper uses ISO 8601 format for its duration periods.

        ingredients_added = False
        for s in file.find("div", {"itemprop": "recipeDirections"}).find_all("p"):

            if s.text == "":
                continue

            step = Step.objects.create(
                instruction=s.text
            )
            if not ingredients_added:
                ingredients_added = True
                for ingredient in file.find("div", {"itemprop": "recipeIngredients"}).findChildren("p"):
                    if ingredient.text == "":
                        continue
                    amount, unit, ingredient, note = parse(ingredient.text.strip())
                    f = get_food(ingredient, self.request.space)
                    u = get_unit(unit, self.request.space)
                    step.ingredients.add(Ingredient.objects.create(
                        food=f, unit=u, amount=amount, note=note
                    ))
            recipe.steps.add(step)

        # import the Primary recipe image that is stored in the Zip
        try:
            for f in self.files:
                if '.zip' in f['name']:
                    import_zip = ZipFile(f['file'])
                    self.import_recipe_image(recipe, BytesIO(import_zip.read(file.find("img", class_="recipe-photo").get("src"))))
        except Exception as e:
            pass

  # TODO: Import the source url
  #      if source_url != '':
  #          step.instruction += '\n' + source_url
  #          step.save()

        return recipe

    def get_file_from_recipe(self, recipe):
        raise NotImplementedError('Method not implemented in storage integration')