📝 Add initial sphinx ext for per-doc feedbacks

Resolves #8783

docs/docs_feedback_sphinxext.py

@@ -0,0 +1,96 @@
+"""A sphinx extension for collecting per doc feedback."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing import Dict, List, Union
+
+    from sphinx.application import Sphinx
+
+
+def _modify_rst_document_source_on_read(
+        app: Sphinx,
+        docname: str,
+        source: List[str],
+) -> None:
+    """Add info block to top and bottom of each document source.
+
+    This function modifies RST source in-place by adding an admonition
+    block at the top and the bottom of each document right after it's
+    been read from disk preserving :orphan: at top, if present.
+    """
+    admonition_type = 'important'
+    valid_admonitions = {
+        'attention', 'caution', 'danger', 'error', 'hint',
+        'important', 'note', 'tip', 'warning', 'admonition',
+    }
+
+    if admonition_type not in valid_admonitions:
+        raise ValueError(
+            'Expected admonition_type to be one of '
+            f'{valid_admonitions} but got {admonition_type}.'
+        )
+
+    questions_list = """
+      1. What problem were you trying to solve when you came to this page?
+
+      2. What content was useful?
+
+      3. What content was not useful?
+    """
+    questions_list_urlencoded = (
+        f"""
+      0. Document: {docname}. Page URL: https://
+      {questions_list}
+        """.
+        rstrip('\r\n\t ').
+        replace('\r', '%0D').
+        replace('\n', '%0A').
+        replace(' ', '%20')
+    )
+
+    admonition_msg = rf"""
+    **Did this article help?**
+
+    We are currently doing research to improve pip's documentation
+    and would love your feedback.
+    Please `email us`_ and let us know:
+
+    {questions_list}
+
+    .. _email us:
+       mailto:Docs\ UX\ Team \
+       <docs-feedback+ux/pip.pypa.io@pypa.io>\
+       ?subject=[Doc:\ {docname}]\ Pip\ docs\ feedback\ \
+       (URL\:\ https\://)\
+       &body={questions_list_urlencoded}
+    """
+    orphan_mark = ':orphan:'
+    info_block = f'.. {admonition_type}::\n\t\t{admonition_msg}\n'
+
+    is_orphan = orphan_mark in source[0]
+    if is_orphan:
+        source[0].replace(orphan_mark, '')
+    else:
+        orphan_mark = ''
+
+    source[0] = '\n\n'.join((
+        orphan_mark, info_block, source[0], info_block,
+    ))
+
+
+def setup(app: Sphinx) -> Dict[str, Union[bool, str]]:
+    """Initialize the Sphinx extension.
+
+    This function adds a callback for modifying the document sources
+    in-place on read.
+    """
+    app.connect('source-read', _modify_rst_document_source_on_read)
+
+    return {
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+        'version': 'builtin',
+    }

docs/html/conf.py

@@ -30,7 +30,12 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 # extensions = ['sphinx.ext.autodoc']
-extensions = ['sphinx.ext.extlinks', 'pip_sphinxext', 'sphinx.ext.intersphinx']
+extensions = [
+    'sphinx.ext.extlinks',
+    'sphinx.ext.intersphinx',
+    'docs_feedback_sphinxext',
+    'pip_sphinxext',
+]
 
 # intersphinx
 intersphinx_cache_limit = 0