display emojos by category

app.py

@@ -19,10 +19,22 @@ import urllib.parse
 import botocore.session
 import requests
 import serverless_wsgi
+from collections import defaultdict
+from dataclasses import dataclass
 from flask import Flask, redirect, render_template, request, url_for
 
 app = Flask(__name__)
 
+def slug_filter(s):
+    return s.lower().replace(" ", "-")
+
+app.jinja_env.filters["slug"] = slug_filter
+
+@dataclass
+class Emoj:
+    __slots__ = frozenset({"shortcode", "url"})
+    shortcode: str
+    url: str
 
 @app.route("/<domain>")
 def emojo(domain):
@@ -35,26 +47,32 @@ def emojo(domain):
     else:
         show_animated = False
 
-    try:
     url = urllib.parse.urlunsplit(
         ("https", domain, "/api/v1/custom_emojis", "", "")
     )
+    try:
         response = requests.get(url)
+    except requests.exceptions.RequestException:
+        return render_template("oh_no.html", domain=domain)
+
     if response.status_code == 401:
         return render_template("forbidden.html", domain=domain)
 
-        if show_all:
-            emojo = sorted(response.json(), key=operator.itemgetter("shortcode"))
-        else:
-            emojo = sorted(
-                filter(lambda x: x.get("visible_in_picker", True), response.json()),
-                key=operator.itemgetter("shortcode"),
-            )
+    categories = defaultdict(list)
+    for emoji in sorted(
+        response.json(),
+        # sort by category, then name within each category, then disambiguate by capitalization
+        key=lambda x: (x.get("category", ""), x["shortcode"].lower(), x["shortcode"]),
+    ):
+        if not show_all and not emoji.get("visible_in_picker", True):
+            continue
+
+        url = emoji["url" if show_animated else "static_url"]
+        categories[emoji.get("category")].append(Emoj(shortcode=emoji["shortcode"], url=url))
+
     return render_template(
-            "emojo.html", domain=domain, emojo=emojo, show_animated=show_animated
+        "emojo.html", domain=domain, categories=categories, show_animated=show_animated
     )
-    except requests.exceptions.RequestException:
-        return render_template("oh_no.html", domain=domain)
 
 
 @app.route("/favicon.ico")

templates/emojo.html

@@ -5,23 +5,23 @@
     <b>{{ domain }}</b> emojo list<br>
     click/touch to copy to clipboard
 </p>
+{% for category, emojo in categories.items() %}
+    <h2 id="{{ category or "(No category)"|slug }}">
+        {% if not category %}
+            <em>(No category)</em>
+        {% else %}
+            <em>{{ category }}</em>
+        {% endif %}
+    </h2>
     <dl class="emojo">
-    {% if show_animated %}
         {% for emoj in emojo %}
             <div>
                 <dt><img src="{{ emoj.url }}" alt=":{{ emoj.shortcode }}:"></dt>
                 <dd>:{{ emoj.shortcode }}:</dd>
             </div>
         {% endfor %}
-    {% else %}
-        {% for emoj in emojo %}
-        <div>
-            <dt><img src="{{ emoj.static_url }}" alt=":{{ emoj.shortcode }}:"></dt>
-            <dd>:{{ emoj.shortcode }}:</dd>
-        </div>
-        {% endfor %}
-    {% endif %}
     </dl>
+{% endfor %}
 {% endblock body %}
 {% block script %}
 <script src="{{ url_for('static', filename='copy.js') }}"></script>