From 610accc58075da0cc61d75173396ec9e51538240 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Wed, 3 Mar 2021 14:48:58 -0500
Subject: [PATCH] Add list of popular tags to project index

---
 hubsrht/blueprints/public.py         | 13 ++++++++++++-
 hubsrht/templates/project-index.html | 12 ++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/hubsrht/blueprints/public.py b/hubsrht/blueprints/public.py
index adaecef..9a9892b 100644
--- a/hubsrht/blueprints/public.py
+++ b/hubsrht/blueprints/public.py
@@ -1,6 +1,7 @@
 from sqlalchemy.sql import operators
 from flask import Blueprint, render_template, request, session
 from hubsrht.types import Project, Feature, Event, EventType, Visibility, User
+from srht.database import db
 from srht.flask import paginate_query
 from srht.oauth import current_user, loginrequired
 from srht.search import search_by
@@ -72,9 +73,19 @@ def project_index():
             .order_by(Feature.created.desc())
             .limit(5)).all()
 
+    tags = db.engine.execute("""
+        SELECT count(*) count, unnest(tags) tag
+        FROM project
+        GROUP BY tag
+        ORDER BY count DESC
+        LIMIT 12;
+    """)
+    tags = [(row[0], row[1]) for row in tags]
+
     return render_template("project-index.html", projects=projects,
             search=search, features=features, sort=sort, **pagination,
-            search_keys=["sort"], search_error=search_error)
+            search_keys=["sort"], search_error=search_error,
+            tags=tags)
 
 @public.route("/projects/featured")
 def featured_projects():
diff --git a/hubsrht/templates/project-index.html b/hubsrht/templates/project-index.html
index 32e17ee..515bb61 100644
--- a/hubsrht/templates/project-index.html
+++ b/hubsrht/templates/project-index.html
@@ -111,6 +111,18 @@
           class="btn btn-default btn-block"
         >More featured projects {{icon('caret-right')}}</a>
       </div>
+      <h3>Popular tags</h3>
+      <div class="row">
+        {% for tag in tags %}
+        <div class="col-md-4">
+          <a
+            href="{{url_for("public.project_index",
+                search=((search or "").strip() + " #"+tag[1]).lstrip())}}"
+           >#{{tag[1]}}</a>:
+          {{tag[0]}} project{% if tag[0] > 1 %}s{% endif %}
+        </div>
+        {% endfor %}
+      </div>
     </div>
   </div>
 </div>