From 7d051336d34ce590caf8f555d4e76ab56c6eaebb Mon Sep 17 00:00:00 2001
From: vabene1111 <vabene1234@googlemail.com>
Date: Mon, 8 Feb 2021 19:09:45 +0100
Subject: [PATCH] basic nextcloud import

---
 cookbook/forms.py                          |  3 +-
 cookbook/integration/integration.py        | 17 +++++--
 cookbook/integration/nextcloud_cookbook.py | 52 ++++++++++++++++++++++
 cookbook/views/import_export.py            |  3 ++
 4 files changed, 71 insertions(+), 4 deletions(-)
 create mode 100644 cookbook/integration/nextcloud_cookbook.py

diff --git a/cookbook/forms.py b/cookbook/forms.py
index 81fa057f1..1e22b070d 100644
--- a/cookbook/forms.py
+++ b/cookbook/forms.py
@@ -134,8 +134,9 @@ class ShoppingForm(forms.Form):
 class ImportExportBase(forms.Form):
     DEFAULT = 'DEFAULT'
     PAPRIKA = 'PAPRIKA'
+    NEXTCLOUD = 'NEXTCLOUD'
 
-    type = forms.ChoiceField(choices=((DEFAULT, _('Default')), (PAPRIKA, _('Paprika')),))
+    type = forms.ChoiceField(choices=((DEFAULT, _('Default')), (PAPRIKA, _('Paprika')), (NEXTCLOUD, _('Nextcloud Cookbook')),))
 
 
 class ImportForm(ImportExportBase):
diff --git a/cookbook/integration/integration.py b/cookbook/integration/integration.py
index 014bd3d99..5e412b253 100644
--- a/cookbook/integration/integration.py
+++ b/cookbook/integration/integration.py
@@ -63,6 +63,16 @@ class Integration:
         response['Content-Disposition'] = 'attachment; filename="export.zip"'
         return response
 
+    def import_file_name_filter(self, zip_info_object):
+        """
+        Since zipfile.namelist() returns all files in all subdirectories this function allows filtering of files
+        If false is returned the file will be ignored
+        By default all files are included
+        :param zip_info_object: ZipInfo object
+        :return: Boolean if object should be included
+        """
+        return True
+
     def do_import(self, files):
         """
         Imports given files
@@ -73,9 +83,10 @@ class Integration:
             for f in files:
                 if '.zip' in f.name:
                     import_zip = ZipFile(f.file)
-                    for z in import_zip.namelist():
-                        recipe = self.get_recipe_from_file(BytesIO(import_zip.read(z)))
-                        recipe.keywords.add(self.keyword)
+                    for z in import_zip.filelist:
+                        if self.import_file_name_filter(z):
+                            recipe = self.get_recipe_from_file(BytesIO(import_zip.read(z.filename)))
+                            recipe.keywords.add(self.keyword)
                 else:
                     recipe = self.get_recipe_from_file(f.file)
                     recipe.keywords.add(self.keyword)
diff --git a/cookbook/integration/nextcloud_cookbook.py b/cookbook/integration/nextcloud_cookbook.py
new file mode 100644
index 000000000..61909c872
--- /dev/null
+++ b/cookbook/integration/nextcloud_cookbook.py
@@ -0,0 +1,52 @@
+import json
+import re
+from io import BytesIO
+from zipfile import ZipFile
+
+from rest_framework.renderers import JSONRenderer
+
+from cookbook.helper.ingredient_parser import parse
+from cookbook.integration.integration import Integration
+from cookbook.models import Recipe, Step, Food, Unit, Ingredient
+from cookbook.serializer import RecipeExportSerializer
+
+
+class NextcloudCookbook(Integration):
+
+    def import_file_name_filter(self, zip_info_object):
+        print("testing", zip_info_object.filename)
+        return re.match(r'^Recipes/([A-Za-z\d\s])+/recipe.json$', zip_info_object.filename)
+
+    def get_recipe_from_file(self, file):
+        recipe_json = json.loads(file.getvalue().decode("utf-8"))
+
+        recipe = Recipe.objects.create(
+            name=recipe_json['name'].strip(), description=recipe_json['description'].strip(),
+            created_by=self.request.user, internal=True,
+            servings=recipe_json['recipeYield'])
+
+        #TODO parse times (given in PT2H3M )
+
+        ingredients_added = False
+        for s in recipe_json['recipeInstructions']:
+            step = Step.objects.create(
+                instruction=s
+            )
+            if not ingredients_added:
+                ingredients_added = True
+
+                for ingredient in recipe_json['recipeIngredient']:
+                    amount, unit, ingredient, note = parse(ingredient)
+                    f, created = Food.objects.get_or_create(name=ingredient)
+                    u, created = Unit.objects.get_or_create(name=unit)
+                    step.ingredients.add(Ingredient.objects.create(
+                        food=f, unit=u, amount=amount, note=note
+                    ))
+            recipe.steps.add(step)
+
+        return recipe
+
+    def get_file_from_recipe(self, recipe):
+        export = RecipeExportSerializer(recipe).data
+
+        return 'recipe.json', JSONRenderer().render(export).decode("utf-8")
diff --git a/cookbook/views/import_export.py b/cookbook/views/import_export.py
index b668970a7..f58cc2583 100644
--- a/cookbook/views/import_export.py
+++ b/cookbook/views/import_export.py
@@ -7,6 +7,7 @@ from django.utils.translation import gettext as _
 from cookbook.forms import ExportForm, ImportForm, ImportExportBase
 from cookbook.helper.permission_helper import group_required
 from cookbook.integration.default import Default
+from cookbook.integration.nextcloud_cookbook import NextcloudCookbook
 from cookbook.integration.paprika import Paprika
 from cookbook.models import Recipe
 
@@ -16,6 +17,8 @@ def get_integration(request, export_type):
         return Default(request)
     if export_type == ImportExportBase.PAPRIKA:
         return Paprika(request)
+    if export_type == ImportExportBase.NEXTCLOUD:
+        return NextcloudCookbook(request)
 
 
 @group_required('user')