From 26f64bfc06b4c682da8adf6238e339a7c9937820 Mon Sep 17 00:00:00 2001
From: Michael Manfre <mike@manfre.net>
Date: Tue, 27 Dec 2022 21:41:16 -0500
Subject: [PATCH] Guess emoji mimetype if not provided in tag (#298)

---
 activities/models/emoji.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/activities/models/emoji.py b/activities/models/emoji.py
index 8c74c27..32d586b 100644
--- a/activities/models/emoji.py
+++ b/activities/models/emoji.py
@@ -1,3 +1,4 @@
+import mimetypes
 import re
 from functools import partial
 from typing import ClassVar
@@ -225,16 +226,23 @@ class Emoji(StatorModel):
         else:
             raise ValueError("No name on emoji JSON")
 
+        icon = data["icon"]
+
+        mimetype = icon.get("mediaType")
+        if not mimetype:
+            mimetype, _ = mimetypes.guess_type(icon["url"])
+            if mimetype is None:
+                raise ValueError("No mimetype on emoji JSON")
+
         # create
         shortcode = name.lower().strip(":")
-        icon = data["icon"]
         category = (icon.get("category") or "")[:100]
         emoji = cls.objects.create(
             shortcode=shortcode,
             domain=None if domain.local else domain,
             local=domain.local,
             object_uri=data["id"],
-            mimetype=icon["mediaType"],
+            mimetype=mimetype,
             category=category,
             remote_url=icon["url"],
         )