Extract Video Block from edx-platform | Update the shifted Video XBlock code

requirements/base.in

@@ -2,9 +2,12 @@
 -c constraints.txt
 
 django-statici18n
+edx-django-utils
 edx-i18n-tools
 edx-opaque-keys
+edxval
 nh3
 oauthlib
 openedx-django-pyfs
+wrapt
 XBlock

xblocks_contrib/common/utils.py

@@ -0,0 +1,35 @@
+"""
+Common utility functions for XBlocks.
+"""
+
+from django.conf import settings
+
+
+
+def get_resource_url(xblock, path, package_scope=None):
+    """
+    Return the runtime URL for a static resource in this XBlock's package.
+
+    When the Django pipeline is enabled or REQUIRE_DEBUG is False, uses the
+    pipeline path (e.g. {package_scope}/public/{path}). Otherwise uses the
+    dev path (e.g. public/{path}). See platform's xblock_local_resource_url() in:
+    openedx/core/lib/xblock_utils/__init__.py
+
+    Arguments:
+        xblock: The XBlock instance (for runtime.local_resource_url).
+        path (str): Relative path within the package, e.g. "css/video.css".
+        package_scope (str): Package name prefix, e.g. "video". If None,
+            both paths are "public/{path}"; otherwise pipeline adds the prefix.
+
+    Returns:
+        str: URL from xblock.runtime.local_resource_url() for the resource.
+    """
+    pipeline_path = dev_path = f"public/{path}"
+    if package_scope:
+        pipeline_path = f"{package_scope}/{pipeline_path}"
+    pipeline = getattr(settings, 'PIPELINE', {})
+    if pipeline.get('PIPELINE_ENABLED', True) or not getattr(settings, 'REQUIRE_DEBUG', False):
+        resource_path = pipeline_path
+    else:
+        resource_path = dev_path
+    return xblock.runtime.local_resource_url(xblock, resource_path)

xblocks_contrib/video/ajax_handler_mixin.py

@@ -1,21 +1,24 @@
-# NOTE: Code has been copied from the following source file
-# https://github.com/openedx/edx-platform/blob/master/xmodule/x_module.py#L739
+""" Mixin that provides AJAX handling for Video XBlock """
+from webob import Response
+from webob.multidict import MultiDict
+from xblock.core import XBlock
 
-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:
             """