Use swizzle "eject" instead to include DocumentMetadata on each page

docs/src/components/DocumentMetadata/index.tsx

@@ -17,7 +17,7 @@ interface TranslatedMetadata {
   commitHash: string
 }
 
-const style = { marginTop: '1em' }
+const style = { marginBottom: '1em' }
 
 const renderMetadata = ({ lastUpdatedAt, commitHash }: Metadata) => {
   let link = `https://github.com/input-output-hk/hydra-poc/commit/${commitHash}`

docs/src/theme/DocItemFooter/index.js

@@ -1,12 +1,83 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from 'react';
-import DocItemFooter from '@theme-original/DocItemFooter';
+import clsx from 'clsx';
+import LastUpdated from '@theme/LastUpdated';
+import EditThisPage from '@theme/EditThisPage';
+import TagsListInline from '@theme/TagsListInline';
+import styles from './styles.module.css';
+import {ThemeClassNames} from '@docusaurus/theme-common';
 import DocumentMetadata from '@site/src/components/DocumentMetadata';
 
-export default function DocItemFooterWrapper(props) {
+function TagsRow(props) {
   return (
-    <>
+    <div
+      className={clsx(
+        ThemeClassNames.docs.docFooterTagsRow,
+        'row margin-bottom--sm',
+      )}>
+      <div className="col">
+        <TagsListInline {...props} />
+      </div>
+    </div>
+  );
+}
+
+function EditMetaRow({
+  editUrl,
+  lastUpdatedAt,
+  lastUpdatedBy,
+  formattedLastUpdatedAt,
+}) {
+  return (
+    <div className={clsx(ThemeClassNames.docs.docFooterEditMetaRow, 'row')}>
+      <div className="col">{editUrl && <EditThisPage editUrl={editUrl} />}</div>
+
+      <div className={clsx('col', styles.lastUpdated)}>
+        {(lastUpdatedAt || lastUpdatedBy) && (
+          <LastUpdated
+            lastUpdatedAt={lastUpdatedAt}
+            formattedLastUpdatedAt={formattedLastUpdatedAt}
+            lastUpdatedBy={lastUpdatedBy}
+          />
+        )}
+      </div>
+    </div>
+  );
+}
+
+export default function DocItemFooter(props) {
+  const {content: DocContent} = props;
+  const {metadata} = DocContent;
+  const {editUrl, lastUpdatedAt, formattedLastUpdatedAt, lastUpdatedBy, tags} =
+    metadata;
+  const canDisplayTagsRow = tags.length > 0;
+  const canDisplayEditMetaRow = !!(editUrl || lastUpdatedAt || lastUpdatedBy);
+  const canDisplayFooter = canDisplayTagsRow || canDisplayEditMetaRow;
+
+  if (!canDisplayFooter) {
+    return null;
+  }
+
+  return (
+    <footer
+      className={clsx(ThemeClassNames.docs.docFooter, 'docusaurus-mt-lg')}>
+      {canDisplayTagsRow && <TagsRow tags={tags} />}
+      // NOTE: This is our only modification to this "ejected" component
       <DocumentMetadata />
-      <DocItemFooter {...props} />
-    </>
+      // End of our modifications
+      {canDisplayEditMetaRow && (
+        <EditMetaRow
+          editUrl={editUrl}
+          lastUpdatedAt={lastUpdatedAt}
+          lastUpdatedBy={lastUpdatedBy}
+          formattedLastUpdatedAt={formattedLastUpdatedAt}
+        />
+      )}
+    </footer>
   );
 }

docs/src/theme/DocItemFooter/styles.module.css

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+.lastUpdated {
+  margin-top: 0.2rem;
+  font-style: italic;
+  font-size: smaller;
+}
+
+@media (min-width: 997px) {
+  .lastUpdated {
+    text-align: right;
+  }
+}