feat: Adds Video XBlock extracted from edx-platform repository

Author: farhan

requirements/base.in

@@ -4,6 +4,7 @@
 django-statici18n
 edx-i18n-tools
 edx-opaque-keys
+edxval
 nh3
 oauthlib
 openedx-django-pyfs

xblocks_contrib/video/ajax_handler_mixin.py

@@ -1,31 +1,30 @@
-# NOTE: Code has been copied from the following source file
-# https://github.com/openedx/edx-platform/blob/master/xmodule/x_module.py#L739
+from xblock.core import XBlock
+from webob.multidict import MultiDict
+from webob import Response
 
-class XModuleToXBlockMixin:
+class AjaxHandlerMixin:
     """
-    Common code needed by XModule and XBlocks converted from XModules.
+    Mixin that provides AJAX handling for Video XBlock
     """
     @property
     def ajax_url(self):
         """
         Returns the URL for the ajax handler.
         """
-        return self.runtime.handler_url(self, 'xmodule_handler', '', '').rstrip('/?')
+        return self.runtime.handler_url(self, 'ajax_handler', '', '').rstrip('/?')
 
     @XBlock.handler
-    def xmodule_handler(self, request, suffix=None):
+    def ajax_handler(self, request, suffix=None):
         """
-        XBlock handler that wraps `handle_ajax`
+        XBlock handler that wraps `ajax_handler`
         """
         class FileObjForWebobFiles:
             """
             Turn Webob cgi.FieldStorage uploaded files into pure file objects.
-
             Webob represents uploaded files as cgi.FieldStorage objects, which
             have a .file attribute.  We wrap the FieldStorage object, delegating
             attribute access to the .file attribute.  But the files have no
             name, so we carry the FieldStorage .filename attribute as the .name.
-
             """
             def __init__(self, webob_file):
                 self.file = webob_file.file

xblocks_contrib/video/bumper_utils.py

@@ -1,10 +1,7 @@
-# NOTE: Code has been copied from the following source files
-# https://github.com/openedx/edx-platform/blob/master/xmodule/video_block/bumper_utils.py
 """
 Utils for video bumper
 """
 
-
 import copy
 import json
 import logging

xblocks_contrib/video/cache_utils.py

@@ -1,21 +1,9 @@
-# NOTE: Code has been copied from the following source files
-# https://github.com/openedx/edx-platform/blob/master/openedx/core/lib/cache_utils.py
-"""
-Utilities related to caching.
-"""
-
-
-import collections
-import functools
 import itertools
-import zlib
-import pickle
-
 import wrapt
-from django.db.models.signals import post_save, post_delete
+
 from django.utils.encoding import force_str
 
-from edx_django_utils.cache import RequestCache, TieredCache
+from edx_django_utils.cache import RequestCache
 
 
 def request_cached(namespace=None, arg_map_function=None, request_cache_getter=None):
@@ -82,7 +70,6 @@ def decorator(wrapped, instance, args, kwargs):
 
     return decorator
 
-
 def _func_call_cache_key(func, arg_map_function, *args, **kwargs):
     """
     Returns a cache key based on the function's module,
@@ -97,7 +84,6 @@ def _func_call_cache_key(func, arg_map_function, *args, **kwargs):
     cache_keys = [func.__module__, func.__name__] + converted_args + converted_kwargs
     return '.'.join(cache_keys)
 
-
 def _sorted_kwargs_list(kwargs):
     """
     Returns a unique and deterministic ordered list from the given kwargs.

xblocks_contrib/video/constants.py

@@ -1,30 +1,22 @@
-# NOTE: Code has been copied from the following source files
-# https://github.com/openedx/edx-platform/blob/master/common/djangoapps/xblock_django/constants.py
 """
 Constants used by DjangoXBlockUserService
 """
 
-# Optional attributes stored on the XBlockUser
+# This is the view that will be rendered to display the XBlock in the LMS.
+# It will also be used to render the block in "preview" mode in Studio, unless
+# the XBlock also implements author_view.
+STUDENT_VIEW = 'student_view'
+
+# This is the view that will be rendered to display the XBlock in the LMS for unenrolled learners.
+# Implementations of this view should assume that a user and user data are not available.
+PUBLIC_VIEW = 'public_view'
+
 
-# The anonymous user ID for the user in the course.
-ATTR_KEY_ANONYMOUS_USER_ID = 'edx-platform.anonymous_user_id'
-# The global (course-agnostic) anonymous user ID for the user.
-ATTR_KEY_DEPRECATED_ANONYMOUS_USER_ID = 'edx-platform.deprecated_anonymous_user_id'
-# The country code determined from the user's request IP address.
-ATTR_KEY_REQUEST_COUNTRY_CODE = 'edx-platform.request_country_code'
-# Whether the user is authenticated or anonymous.
-ATTR_KEY_IS_AUTHENTICATED = 'edx-platform.is_authenticated'
 # The personally identifiable user ID.
 ATTR_KEY_USER_ID = 'edx-platform.user_id'
-# The username.
-ATTR_KEY_USERNAME = 'edx-platform.username'
-# Whether the user is enrolled in the course as a Beta Tester.
-ATTR_KEY_USER_IS_BETA_TESTER = 'edx-platform.user_is_beta_tester'
-# Whether the user has staff access to the platform.
-ATTR_KEY_USER_IS_GLOBAL_STAFF = 'edx-platform.user_is_global_staff'
-# Whether the user is a course team member with 'Staff' or 'Admin' access.
-ATTR_KEY_USER_IS_STAFF = 'edx-platform.user_is_staff'
-# A dict containing user's entries from the `UserPreference` model.
-ATTR_KEY_USER_PREFERENCES = 'edx-platform.user_preferences'
-# The user's role in the course ('staff', 'instructor', or 'student').
-ATTR_KEY_USER_ROLE = 'edx-platform.user_role'
+# The country code determined from the user's request IP address.
+ATTR_KEY_REQUEST_COUNTRY_CODE = 'edx-platform.request_country_code'
+
+COURSE_VIDEO_SHARING_PER_VIDEO = 'per-video'
+COURSE_VIDEO_SHARING_ALL_VIDEOS = 'all-on'
+COURSE_VIDEO_SHARING_NONE = 'all-off'