From b97d35d07e2e010264d6ba62fd531cd261668775 Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@libreserver.org>
Date: Sat, 20 Apr 2024 12:07:45 +0100
Subject: [PATCH] Display quote toots if permitted

---
 utils.py       | 41 +++++++++++++++++++++++++++++------------
 webapp_post.py | 12 ++++++++++++
 2 files changed, 41 insertions(+), 12 deletions(-)

diff --git a/utils.py b/utils.py
index 1a35544b5..00c41a660 100644
--- a/utils.py
+++ b/utils.py
@@ -4755,16 +4755,16 @@ def save_reverse_timeline(base_dir: str, reverse_sequence: []) -> []:
         break
 
 
-def is_quote_toot(post_json_object: str, content: str) -> bool:
-    """Returns true if the given post is a quote toot / quote tweet
+def get_quote_toot_url(post_json_object: str) -> str:
     """
-    # Pleroma/Misskey implementations
-    if post_json_object['object'].get('quoteUri') or \
-       post_json_object['object'].get('quoteUrl') or \
-       post_json_object['object'].get('quoteReply') or \
-       post_json_object['object'].get('toot:quoteReply') or \
-       post_json_object['object'].get('_misskey_quote'):
-        return True
+    """
+    # adhoc quote toot implementations
+    object_quote_url_fields = ('quoteUri', 'quoteUrl', 'quoteReply',
+                               'toot:quoteReply', '_misskey_quote')
+    for fieldname in object_quote_url_fields:
+        if post_json_object['object'].get(fieldname):
+            return post_json_object['object'][fieldname]
+
     # More correct ActivityPub implementation - adding a Link tag
     if post_json_object['object'].get('tag'):
         if isinstance(post_json_object['object']['tag'], list):
@@ -4772,15 +4772,21 @@ def is_quote_toot(post_json_object: str, content: str) -> bool:
                 if not isinstance(item, dict):
                     continue
                 if item.get('rel'):
+                    mk_quote = False
                     if isinstance(item['rel'], list):
                         for rel_str in item['rel']:
                             if not isinstance(rel_str, str):
                                 continue
                             if '_misskey_quote' in rel_str:
-                                return True
+                                mk_quote = True
                     elif isinstance(item['rel'], str):
                         if '_misskey_quote' in item['rel']:
-                            return True
+                            mk_quote = True
+                    if mk_quote:
+                        if item.get('href'):
+                            if isinstance(item['href'], str):
+                                if resembles_url(item['href']):
+                                    return item['href']
                 if not item.get('type'):
                     continue
                 if not item.get('mediaType'):
@@ -4793,7 +4799,18 @@ def is_quote_toot(post_json_object: str, content: str) -> bool:
                     continue
                 if 'json' not in item['mediaType']:
                     continue
-                return True
+                if item.get('href'):
+                    if isinstance(item['href'], str):
+                        if resembles_url(item['href']):
+                            return item['href']
+    return ''
+
+
+def is_quote_toot(post_json_object: str, content: str) -> bool:
+    """Returns true if the given post is a quote toot / quote tweet
+    """
+    if get_quote_toot_url(post_json_object):
+        return True
     # Twitter-style indicator
     if content:
         if 'QT: ' in content:
diff --git a/webapp_post.py b/webapp_post.py
index dab6082aa..60c3706ef 100644
--- a/webapp_post.py
+++ b/webapp_post.py
@@ -24,6 +24,7 @@ from posts import post_is_muted
 from posts import get_person_box
 from posts import download_announce
 from posts import populate_replies_json
+from utils import get_quote_toot_url
 from utils import get_post_attachments
 from utils import get_url_from_post
 from utils import date_from_string_format
@@ -2845,6 +2846,17 @@ def individual_post_as_html(signing_priv_key_pem: str,
             object_content = html_replace_quote_marks(object_content)
             object_content = \
                 format_mixed_right_to_left(object_content, system_language)
+            # show quote toot link
+            quote_url = get_quote_toot_url(post_json_object)
+            if quote_url:
+                quote_url = quote_url.replace('.json', '')
+                quote_url_shown = quote_url
+                if len(quote_url_shown) > 40:
+                    quote_url_shown = quote_url_shown[:40]
+                object_content += '<p>💬 <a href="' + quote_url + \
+                    '" target="_blank" ' + \
+                    'rel="nofollow noopener noreferrer">' + \
+                    quote_url_shown + '</a></p>\n'
             # append any edits
             object_content += edits_str
         else: