db: Set reply sorting to oldest

CHANGES.rst

@@ -50,6 +50,7 @@ Bugfixes & Improvements
 - Make 'text' field in 'comments' table NOT NULL and handling data migration (`#1019`_, pkvach)
 - Python 3.12 support (`#1015`_, ix5)
 - Disable Postbox submit button on click, enable after response (`#993`_, pkvach)
+- Set reply sorting to always be oldest (`#1035`_, ggtylerr)
 
 .. _#951: https://github.com/posativ/isso/pull/951
 .. _#967: https://github.com/posativ/isso/pull/967
@@ -64,6 +65,7 @@ Bugfixes & Improvements
 .. _#1019: https://github.com/isso-comments/isso/pull/1019
 .. _#1015: https://github.com/isso-comments/isso/pull/1015
 .. _#993: https://github.com/isso-comments/isso/pull/993
+.. _#1035: https://github.com/isso-comments/isso/pull/1035
 
 0.13.1.dev0 (2023-02-05)
 ------------------------

docs/docs/reference/client-config.rst

@@ -267,7 +267,8 @@ data-isso-sorting
     - ``oldest``: Bring oldest comments to the top
     - ``upvotes``: Bring most liked comments to the top
 
-    Default sorting is ``oldest``.
+    Default sorting is ``oldest``. As of 0.13.1, replies are always sorted as
+    ``oldest``.
 
     .. versionadded:: 0.13.1
 

isso/db/comments.py

@@ -217,16 +217,16 @@ def fetchall(self, mode=5, after=0, parent='any', order_by='id',
 
         # custom sanitization
         if order_by not in ['id', 'created', 'modified', 'likes', 'dislikes', 'tid']:
-            sql.append('ORDER BY ')
-            sql.append("comments.created")
+            sql.append('ORDER BY CASE WHEN comments.parent IS NOT NULL THEN comments.created END, ')
+            sql.append('comments.created')
             if not asc:
                 sql.append(' DESC')
         else:
-            sql.append('ORDER BY ')
+            sql.append('ORDER BY CASE WHEN comments.parent IS NOT NULL THEN comments.created END, ')
             sql.append('comments.' + order_by)
             if not asc:
                 sql.append(' DESC')
-            sql.append(", comments.created")
+            sql.append(', comments.created')
 
         if limit:
             sql.append('LIMIT ?,?')
@@ -257,8 +257,8 @@ def fetch(self, uri, mode=5, after=0, parent='any',
 
         # custom sanitization
         if order_by not in ['id', 'created', 'modified', 'likes', 'dislikes', 'karma']:
-            order_by = 'id'
-        sql.append('ORDER BY ')
+            order_by = 'created'
+        sql.append('ORDER BY CASE WHEN comments.parent IS NOT NULL THEN comments.created END, ')
         sql.append(order_by)
         if not asc:
             sql.append(' DESC')