From 0d54437bf8d5979e44eac88af71fcc1e017c3921 Mon Sep 17 00:00:00 2001
From: Daniel Egger <daniel.egger@gmail.com>
Date: Wed, 8 Jun 2022 16:41:05 +0200
Subject: [PATCH] Add first api to complete learning contents

---
 server/vbv_lernwelt/completion/serializers.py |  9 +++++
 .../vbv_lernwelt/completion/tests/test_api.py | 15 ++++++--
 server/vbv_lernwelt/completion/views.py       | 35 +++++++++++++++++--
 server/vbv_lernwelt/core/utils.py             | 16 +++++++++
 4 files changed, 69 insertions(+), 6 deletions(-)
 create mode 100644 server/vbv_lernwelt/completion/serializers.py

diff --git a/server/vbv_lernwelt/completion/serializers.py b/server/vbv_lernwelt/completion/serializers.py
new file mode 100644
index 00000000..983a033c
--- /dev/null
+++ b/server/vbv_lernwelt/completion/serializers.py
@@ -0,0 +1,9 @@
+from rest_framework import serializers
+
+from vbv_lernwelt.completion.models import UserCircleCompletion
+
+
+class UserCircleCompletionSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = UserCircleCompletion
+        fields = ['id', 'created_at', 'updated_at', 'user', 'circle_key', 'json_data']
diff --git a/server/vbv_lernwelt/completion/tests/test_api.py b/server/vbv_lernwelt/completion/tests/test_api.py
index 2e6c6a81..9ad24545 100644
--- a/server/vbv_lernwelt/completion/tests/test_api.py
+++ b/server/vbv_lernwelt/completion/tests/test_api.py
@@ -1,4 +1,6 @@
-from rest_framework.test import APITestCase, APIClient
+import json
+
+from rest_framework.test import APITestCase
 
 from vbv_lernwelt.core.create_default_users import create_default_users
 from vbv_lernwelt.core.models import User
@@ -20,9 +22,16 @@ class CompletionApiTestCase(APITestCase):
         self.client.login(username='student', password='student')
 
     def test_completeLearningContent_works(self):
-        learning_content_key = LearningContent.objects.get(title='Einleitung Circle "Anlayse"').translation_key
+        learning_content = LearningContent.objects.get(title='Einleitung Circle "Anlayse"')
+        learning_content_key = str(learning_content.translation_key)
+        circle_key = str(learning_content.get_parent().translation_key)
+
         response = self.client.post(f'/api/completion/complete_learning_content/', {
             'learning_content_key': learning_content_key
         })
-        print(response.content)
+        response_json = response.json()
+        print(json.dumps(response.json()))
+
         self.assertEqual(response.status_code, 201)
+        self.assertEqual(response_json['circle_key'], circle_key)
+        self.assertEqual(response_json['json_data']['completed_learning_contents'][learning_content_key]['learning_content_key'], learning_content_key)
diff --git a/server/vbv_lernwelt/completion/views.py b/server/vbv_lernwelt/completion/views.py
index fa03935f..b0312bcb 100644
--- a/server/vbv_lernwelt/completion/views.py
+++ b/server/vbv_lernwelt/completion/views.py
@@ -1,19 +1,48 @@
+from datetime import datetime
+
+import structlog
 from rest_framework.decorators import api_view
 from rest_framework.response import Response
 
-from vbv_lernwelt.completion.models import LearningContentCompletion
+from vbv_lernwelt.completion.models import LearningContentCompletion, UserCircleCompletion
+from vbv_lernwelt.completion.serializers import UserCircleCompletionSerializer
 from vbv_lernwelt.learnpath.models import LearningContent
 
+logger = structlog.get_logger(__name__)
+
 
 @api_view(['POST'])
 def complete_learning_content(request):
     learning_content_key = request.data.get('learning_content_key')
     learning_content = LearningContent.objects.get(translation_key=learning_content_key)
 
+    circle_key = learning_content.get_parent().translation_key
+
     LearningContentCompletion.objects.create(
         user=request.user,
         learning_content_key=learning_content_key,
-        circle_key=learning_content.get_parent().translation_key,
+        circle_key=circle_key,
     )
 
-    return Response(status=201)
+    ucc, created = UserCircleCompletion.objects.get_or_create(
+        user=request.user,
+        circle_key=circle_key,
+    )
+
+    completed_learning_contents = ucc.json_data.get('completed_learning_contents', {})
+    completed_learning_contents[learning_content_key] = {
+        'learning_content_key': learning_content_key,
+        'created_at': datetime.now().isoformat(),
+    }
+    ucc.json_data['completed_learning_contents'] = completed_learning_contents
+    ucc.save()
+
+    logger.debug(
+        'learning content completed',
+        label='completion_api',
+        circle_key=circle_key,
+        learning_content_key=learning_content_key,
+        user_id=request.user.id,
+    )
+
+    return Response(status=201, data=UserCircleCompletionSerializer(ucc).data)
diff --git a/server/vbv_lernwelt/core/utils.py b/server/vbv_lernwelt/core/utils.py
index 637707c7..d48f902c 100644
--- a/server/vbv_lernwelt/core/utils.py
+++ b/server/vbv_lernwelt/core/utils.py
@@ -4,6 +4,8 @@ import structlog
 from django.conf import settings
 from rest_framework.throttling import UserRateThrottle
 from structlog.types import EventDict
+
+
 #from .models import User
 
 def structlog_add_app_info(
@@ -36,3 +38,17 @@ class HourUserRateThrottle(UserRateThrottle):
 
 class DayUserRateThrottle(UserRateThrottle):
     scope = "day-throttle"
+
+
+def first_true(iterable, default=False, pred=None):
+    """Returns the first true value in the iterable.
+
+    If no true value is found, returns *default*
+
+    If *pred* is not None, returns the first item
+    for which pred(item) is true.
+
+    """
+    # first_true([a,b,c], x) --> a or b or c or x
+    # first_true([a,b], x, f) --> a if f(a) else b if f(b) else x
+    return next(filter(pred, iterable), default)