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):

app/templates/base.html

@@ -23,5 +23,6 @@
     {%- endwith -%}
     {%- block content -%}{%- endblock -%}
     {%- include 'common/footer.html' -%}
+    <script src="{{'/static/js/ui.js' | cachebust}}"></script>
   </body>
 </html>

app/templates/common/icons.html

@@ -25,3 +25,7 @@
 {%- macro icn_stickied(width=16) -%}
 <img src="/static/icons/sticky.svg" title="Stickied" alt="paper held by pushpin" style="width: {{width}}px;">
 {%- endmacro -%}
+
+{%- macro icn_dragger(width=24) -%}
+<img src="/static/icons/dragger.svg" style="width: {{width}}px;">
+{%- endmacro -%}

app/templates/common/macros.html

@@ -1,4 +1,8 @@
-{%- from 'common/icons.html' import icn_info, icn_warn, icn_error, icn_bookmark, icn_megaphone -%}
+{%- from 'common/icons.html' import icn_info, icn_warn, icn_error, icn_bookmark, icn_megaphone, icn_dragger -%}
+
+{% macro dict_to_attr(attrs) -%}
+  {%- for key, value in attrs.items() if value is not none -%}{{' '}}{{key}}="{{value}}"{%- endfor -%}
+{%- endmacro %}
 
 {% macro timestamp(unix_ts) -%}
 <time datetime="{{ unix_ts | iso8601 }}">{{ unix_ts | ts_datetime('%Y-%m-%d %H:%M')}} <abbr title="Server Time">ST</abbr></time>
@@ -253,3 +257,18 @@
 </div>
 {%- endif -%}
 {%- endmacro %}
+
+{% macro sortable_list(attr=none) -%}
+<ol class="sortable-list plank even no-shadow minimal tertiary-bg" {% if attr %}{{ dict_to_attr(attr) }}{% endif %}>
+  {%- if caller -%}
+  {{ caller() }}
+  {%- endif -%}
+</ol>
+{%- endmacro %}
+
+{% macro sortable_list_item(key, immovable=false, attr=none) -%}
+<li class="sortable-item{{ ' immovable' if immovable else '' }} plank even no-shadow {{'tertiary-bg' if immovable else ''}}" data-sortable-list-key="{{key}}" {% if attr %}{{ dict_to_attr(attr) }}{% endif %}>
+  <span class="dragger plank minimal even no-shadow tertiary-bg" draggable="{{ 'true' if not immovable else 'false' }}">{{ icn_dragger() }}</span>
+  <div class="sortable-item-inner">{{ caller() }}</div>
+</li>
+{%- endmacro %}

app/templates/mod/panel.html

@@ -1,4 +1,4 @@
-{%- from 'common/macros.html' import subheader, babycode_editor_component -%}
+{%- from 'common/macros.html' import subheader, babycode_editor_component, sortable_list, sortable_list_item -%}
 {%- extends 'base.html' -%}
 {%- block title -%}settings{%- endblock -%}
 {%- block content -%}
@@ -19,5 +19,18 @@
 </fieldset>
 <fieldset class="plank" id="sort-topics">
   <legend>Sort topics</legend>
+  <p>Drag topics around to reorder them. Press "Save order" when done.</p>
+  <form method="POST" action="{{url_for('mod.sort_topics')}}">
+  <input type="submit" value="Save order">
+  {%- call() sortable_list() -%}
+    {%- for topic in topics -%}
+      {%- call() sortable_list_item(key="topics") -%}
+        <h2 class="info">{{ topic.name }}</h2>
+        <div>{{topic.description}}</div>
+        <input type="hidden" name="topics[]" value="{{ topic.id }}">
+      {%- endcall -%}
+    {%- endfor -%}
+  {%- endcall -%}
+  </form>
 </fieldset>
 {%- endblock -%}