174 lines
6.9 KiB
Python
174 lines
6.9 KiB
Python
import json
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import random
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import re
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import unicodedata
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from json import JSONDecodeError
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import microdata
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from bs4 import BeautifulSoup
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from django.http import JsonResponse
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from django.utils.dateparse import parse_duration
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from django.utils.translation import gettext as _
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from cookbook.models import Keyword
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from cookbook.helper.ingredient_parser import parse as parse_ingredient
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def get_from_html(html_text, url):
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soup = BeautifulSoup(html_text, "html.parser")
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# first try finding ld+json as its most common
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for ld in soup.find_all('script', type='application/ld+json'):
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try:
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ld_json = json.loads(ld.string.replace('\n', ''))
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if type(ld_json) != list:
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ld_json = [ld_json]
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for ld_json_item in ld_json:
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# recipes type might be wrapped in @graph type
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if '@graph' in ld_json_item:
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for x in ld_json_item['@graph']:
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if '@type' in x and x['@type'] == 'Recipe':
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ld_json_item = x
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if '@type' in ld_json_item and ld_json_item['@type'] == 'Recipe':
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return find_recipe_json(ld_json_item, url)
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except JSONDecodeError as e:
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return JsonResponse({'error': True, 'msg': _('The requested site provided malformed data and cannot be read.')}, status=400)
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# now try to find microdata
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items = microdata.get_items(html_text)
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for i in items:
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md_json = json.loads(i.json())
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if 'schema.org/Recipe' in str(md_json['type']):
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return find_recipe_json(md_json['properties'], url)
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return JsonResponse({'error': True, 'msg': _('The requested site does not provide any recognized data format to import the recipe from.')}, status=400)
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def find_recipe_json(ld_json, url):
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if type(ld_json['name']) == list:
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try:
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ld_json['name'] = ld_json['name'][0]
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except:
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ld_json['name'] = 'ERROR'
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# some sites use ingredients instead of recipeIngredients
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if 'recipeIngredient' not in ld_json and 'ingredients' in ld_json:
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ld_json['recipeIngredient'] = ld_json['ingredients']
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if 'recipeIngredient' in ld_json:
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# some pages have comma separated ingredients in a single array entry
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if len(ld_json['recipeIngredient']) == 1 and len(ld_json['recipeIngredient'][0]) > 30:
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ld_json['recipeIngredient'] = ld_json['recipeIngredient'][0].split(',')
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for x in ld_json['recipeIngredient']:
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if '\n' in x:
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ld_json['recipeIngredient'].remove(x)
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for i in x.split('\n'):
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ld_json['recipeIngredient'].insert(0, i)
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ingredients = []
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for x in ld_json['recipeIngredient']:
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try:
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amount, unit, ingredient, note = parse_ingredient(x)
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if ingredient:
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ingredients.append({'amount': amount, 'unit': {'text': unit, 'id': random.randrange(10000, 99999)}, 'ingredient': {'text': ingredient, 'id': random.randrange(10000, 99999)}, "note": note, 'original': x})
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except:
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ingredients.append({'amount': 0, 'unit': {'text': "", 'id': random.randrange(10000, 99999)}, 'ingredient': {'text': x, 'id': random.randrange(10000, 99999)}, "note": "", 'original': x})
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ld_json['recipeIngredient'] = ingredients
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else:
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ld_json['recipeIngredient'] = []
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if 'keywords' in ld_json:
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keywords = []
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# keywords as string
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if type(ld_json['keywords']) == str:
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ld_json['keywords'] = ld_json['keywords'].split(',')
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# keywords as string in list
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if type(ld_json['keywords']) == list and len(ld_json['keywords']) == 1 and ',' in ld_json['keywords'][0]:
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ld_json['keywords'] = ld_json['keywords'][0].split(',')
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# keywords as list
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for kw in ld_json['keywords']:
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if k := Keyword.objects.filter(name=kw).first():
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keywords.append({'id': str(k.id), 'text': str(k).strip()})
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else:
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keywords.append({'id': "null", 'text': kw.strip()})
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ld_json['keywords'] = keywords
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else:
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ld_json['keywords'] = []
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if 'recipeInstructions' in ld_json:
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instructions = ''
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# flatten instructions if they are in a list
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if type(ld_json['recipeInstructions']) == list:
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for i in ld_json['recipeInstructions']:
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if type(i) == str:
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instructions += i
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else:
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if 'text' in i:
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instructions += i['text'] + '\n\n'
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elif 'itemListElement' in i:
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for ile in i['itemListElement']:
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if type(ile) == str:
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instructions += ile + '\n\n'
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elif 'text' in ile:
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instructions += ile['text'] + '\n\n'
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else:
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instructions += str(i)
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ld_json['recipeInstructions'] = instructions
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ld_json['recipeInstructions'] = re.sub(r'\n\s*\n', '\n\n', ld_json['recipeInstructions'])
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ld_json['recipeInstructions'] = re.sub(' +', ' ', ld_json['recipeInstructions'])
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ld_json['recipeInstructions'] = ld_json['recipeInstructions'].replace('<p>', '')
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ld_json['recipeInstructions'] = ld_json['recipeInstructions'].replace('</p>', '')
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else:
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ld_json['recipeInstructions'] = ''
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ld_json['recipeInstructions'] += '\n\n' + _('Imported from') + ' ' + url
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if 'image' in ld_json:
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# check if list of images is returned, take first if so
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if (type(ld_json['image'])) == list:
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if type(ld_json['image'][0]) == str:
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ld_json['image'] = ld_json['image'][0]
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elif 'url' in ld_json['image'][0]:
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ld_json['image'] = ld_json['image'][0]['url']
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# ignore relative image paths
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if 'http' not in ld_json['image']:
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ld_json['image'] = ''
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if 'cookTime' in ld_json:
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try:
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if type(ld_json['cookTime']) == list and len(ld_json['cookTime']) > 0:
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ld_json['cookTime'] = ld_json['cookTime'][0]
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ld_json['cookTime'] = round(parse_duration(ld_json['cookTime']).seconds / 60)
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except TypeError:
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ld_json['cookTime'] = 0
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else:
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ld_json['cookTime'] = 0
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if 'prepTime' in ld_json:
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try:
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if type(ld_json['prepTime']) == list and len(ld_json['prepTime']) > 0:
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ld_json['prepTime'] = ld_json['prepTime'][0]
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ld_json['prepTime'] = round(parse_duration(ld_json['prepTime']).seconds / 60)
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except TypeError:
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ld_json['prepTime'] = 0
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else:
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ld_json['prepTime'] = 0
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for key in list(ld_json):
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if key not in ['prepTime', 'cookTime', 'image', 'recipeInstructions', 'keywords', 'name', 'recipeIngredient']:
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ld_json.pop(key, None)
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return JsonResponse(ld_json)
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