added all files

.gitignore

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+# created by https://www.gitignore.io/api/django,visualstudiocode
+# Edit at https://www.gitignore.io/?templates=django,visualstudiocode
+
+### Django ###
+*.log
+*.pot
+*.pyc
+__pycache__/
+local_settings.py
+db.sqlite3
+media
+
+# If your build process includes running collectstatic, then you probably don't need or want to include staticfiles/
+# in your Git repository. Update and uncomment the following line accordingly.
+# <django-project-name>/staticfiles/
+
+### Django.Python Stack ###
+# Byte-compiled / optimized / DLL files
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+
+# Django stuff:
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+### VisualStudioCode Patch ###
+# Ignore all local history of files
+.history
+
+# End of https://www.gitignore.io/api/django,visualstudiocode

TODO.txt

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+Change RelatedFieldSerializers to Nested represntations, handle manually POST/PUT w/ slug or pk
+GET /api/computed-schedule/
+Validate event modifications to prevent overlaps

backend/settings.py

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+"""
+Django settings for backend project.
+
+Generated by 'django-admin startproject' using Django 2.2.4.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/2.2/ref/settings/
+"""
+
+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = '^itu$*du(a44myk15!$pei3l-dkvjqr7r94-69*6njw7#rfuh5'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+AUTH_USER_MODEL = 'users.User'
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'rest_framework',
+    'learn', 'schedule', 'common', 'users',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'backend.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'backend.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/2.2/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/2.2/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/2.2/howto/static-files/
+
+STATIC_URL = '/static/'
+
+
+REST_FRAMEWORK = {
+    'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.IsAuthenticated',),
+    'DEFAULT_AUTHENTIFICATION_CLASSES': ('rest_framework_simplejwt.authentification.JWTAuthentification',)
+}

backend/temp.json

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+[
+    {
+        "id": 1,
+        "color": "#1A237E",
+        "name": "English",
+    },
+    {
+        "id": 2,
+        "color": "#43A047",
+        "name": "Histoire-Géographie",
+    },
+    {
+        "id": 3,
+        "color": "#E53935",
+        "name": "Français",
+    },
+    {
+        "id": 4,
+        "color": "#039BE5",
+        "name": "Mathématiques",
+    },
+    {
+        "id": 5,
+        "color": "#FDD835",
+        "name": "Español",
+    },
+    {
+        "id": 6,
+        "color": "#26A69A",
+        "name": "Culture Religieuse",
+    },
+    {
+        "id": 7,
+        "color": "#9C27B0",
+        "name": "Physique",
+    },
+    {
+        "id": 8,
+        "color": "#795548",
+        "name": "Latin",
+    },
+    {
+        "id": 9,
+        "color": "#CFD8DC",
+        "name": "Sciences de l'Ingénieur",
+    },
+    {
+        "id": 10,
+        "color": "#F48FB1",
+        "name": "Sport",
+    }
+]

backend/urls.py

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+"""backend URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/2.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+# Setup, imports...
+from django.contrib import admin
+from django.urls import path, include
+from django.shortcuts import redirect
+from rest_framework.routers import DefaultRouter
+from rest_framework_simplejwt.views import (
+    TokenObtainPairView,
+    TokenRefreshView,
+)
+api = DefaultRouter()
+from users.views    import *
+from common.views   import *
+from learn.views    import *
+from schedule.views import *
+
+# ===================== API ROUTES ======================
+# ----------------------- Users -------------------------
+api.register(r'users',     UserViewSet,      'users')
+# ---------------------- Common -------------------------
+api.register(r'settings',  SettingsViewSet,  'settings')
+api.register(r'subjects',  SubjectsViewSet,  'subjects')
+# ----------------------- Learn -------------------------
+api.register(r'notions',   NotionsViewSet,   'notions')
+api.register(r'tests',     TestsViewSet,     'tests')
+api.register(r'notes',     NotesViewSet,     'notes')
+api.register(r'grades',    GradesViewSet,    'grades')
+# --------------------- Schedule ------------------------
+api.register(r'events',    EventsViewSet,    'events')
+api.register(r'additions', AdditionsViewSet, 'additions')
+api.register(r'deletions', DeletionsViewSet, 'deletions')
+api.register(r'exercises', ExercisesViewSet, 'exercises')
+
+
+# Add to urlpatterns
+urlpatterns = [
+    path('api/token/', TokenObtainPairView.as_view()),
+    path('api/token/refresh', TokenRefreshView.as_view()),
+    path('api/computed-schedule', ComputedSchedule.as_view()),
+    path('api/', include(api.urls)),
+    path('admin/', admin.site.urls),
+    path('', lambda req: redirect('api-root')),
+]