Function to convert conversation id to thread id

conversation.py

@@ -411,3 +411,17 @@ def download_conversation_posts(authorized: bool, session,
                 print(post_id + ' returned no json')
 
     return conversation_view + replies_to_post
+
+
+def conversation_tag_to_thread_id(tag: str) -> str:
+    """Converts a converation tag, such as
+    tag:domain,2024-09-28:objectId=647832678:objectType=Conversation
+    into a thread id such as 20240928647832678
+    """
+    if not isinstance(tag, str):
+        return ''
+    thread_id = ''
+    for tag_chr in tag:
+        if tag_chr.isdigit():
+            thread_id += tag_chr
+    return thread_id

tests.py

@@ -225,6 +225,7 @@ from reading import get_book_link_from_content
 from reading import get_book_from_post
 from reading import get_reading_status
 from reading import store_book_events
+from conversation import conversation_tag_to_thread_id
 
 
 TEST_SERVER_GROUP_RUNNING = False
@@ -9041,6 +9042,14 @@ def _test_bridgy() -> None:
     assert domain == 'brid.gy'
 
 
+def _test_conversation_to_thread() -> None:
+    print('conversation to thread')
+    conversation_id = \
+        'tag:domain,2024-09-28:objectId=647832678:objectType=Conversation'
+    thread_id = conversation_tag_to_thread_id(conversation_id)
+    assert thread_id == '20240928647832678'
+
+
 def run_all_tests():
     base_dir = os.getcwd()
     data_dir_testing(base_dir)
@@ -9059,6 +9068,7 @@ def run_all_tests():
     _test_checkbox_names()
     _test_thread_functions()
     _test_functions()
+    _test_conversation_to_thread()
     _test_bridgy()
     _test_link_tracking()
     _test_remove_tags()