Add post count, image count, and unique posters to post detail

Just like 4chan has!!!!!!!

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/models.py

@@ -135,6 +135,18 @@ class Post(models.Model):
             self.__make_thumbnail()
         super(Post, self).save(*args, **kwargs)
 
+    def image_replies_count(self) -> int:
+        """
+        Gets the number of image replies to this OP.
+        """
+        # I would normally use the filter() and count() functions here, but
+        # image__isnull=True does not seem to behave correctly. This is close
+        # enough.
+        return len([p for p in self.replies.all() if p.image])
+
+    def unique_posters(self) -> int:
+        return len(set(p.ip for p in self.replies.all()))
+
     def __make_thumbnail(self):
         image = Image.open(self.image)
         image.thumbnail(settings.THUMB_SIZE, Image.ANTIALIAS)

board/static/board/style.css

@@ -108,6 +108,10 @@ th {
     font-weight: bold;
 }
 
+.post_stats {
+    float: right;
+}
+
 .post {
     background-color: var(--post-background);
     padding: 10px;

board/templates/board/post_detail.html

@@ -29,6 +29,15 @@
 </div>
 {# return links #}
 [ <a href="{% url 'board:board_detail' board.url %}">{% translate "Return" %}</a> ]
+{# posts / images / poster count / page #}
+<span class="post_stats">[
+    <span title="{% translate 'Post replies' %}">{{post.replies.count}}</span>
+    /
+    <span title="{% translate 'Image replies' %}">{{post.image_replies_count}}</span>
+    /
+    <span title="{% translate 'Unique posters in this thread' %}">{{post.unique_posters}}</span>
+    ]
+</span>
 <hr />
 {# posts #}
 <div class="row post">