add topic sorting & js to support it

app/routes/mod.py

@@ -2,6 +2,7 @@ from flask import Blueprint, abort, redirect, url_for, request, render_template,
 from ..constants import InfoboxKind, PermissionLevel, MOTD_BANNED_TAGS
 from ..auth import is_logged_in, get_active_user, csrf_verified
 from ..models import Topics, Threads, Users, MOTD
+from ..db import db
 from ..lib.babycode import babycode_to_html, BABYCODE_VERSION
 from slugify import slugify
 from functools import wraps
@@ -26,7 +27,8 @@ def admin_only(view_func):
 @bp.get('/')
 def index():
     motd = MOTD.get_all()[0] if MOTD.has_motd() else None
-    return render_template('mod/panel.html', MOTD_BANNED_TAGS=MOTD_BANNED_TAGS, motd=motd)
+    topics = Topics.get_list()
+    return render_template('mod/panel.html', MOTD_BANNED_TAGS=MOTD_BANNED_TAGS, motd=motd, topics=topics)
 
 @bp.post('/motd/set/')
 def set_motd():
@@ -143,6 +145,15 @@ def sticky_thread(thread_id):
     thread.update({'is_stickied': request.form.get('sticky')})
     return redirect(url_for('threads.thread_by_id', thread_id=thread.id))
 
+@bp.post('/threads/sort/')
+def sort_topics():
+    topics_list = request.form.getlist('topics[]')
+    with db.transaction():
+        for new_order, topic_id in enumerate(topics_list):
+            db.execute('UPDATE topics SET sort_order = ? WHERE id = ?', new_order, topic_id)
+
+    return redirect(url_for('.index', _anchor='sort-topics'))
+
 @bp.post('/users/<int:user_id>/make-guest/')
 @csrf_verified
 def make_user_guest(user_id):