Basic Emoji suppport (#157)

1 files changed, 27 insertions, 0 deletions

diff --git a/activities/templatetags/emoji_tags.py b/activities/templatetags/emoji_tags.py
new file mode 100644
index 0000000..ad221db
--- /dev/null
+++ b/activities/templatetags/emoji_tags.py
@@ -0,0 +1,27 @@
+from cachetools import TTLCache, cached
+from django import template
+
+from activities.models import Emoji
+from users.models import Domain
+
+register = template.Library()
+
+
+@cached(cache=TTLCache(maxsize=1000, ttl=60))
+def emoji_from_domain(domain: Domain | None) -> list[Emoji]:
+    if not domain:
+        return list(Emoji.locals.values())
+    return list(Emoji.objects.usable(domain))
+
+
+@register.filter
+def imageify_emojis(value: str, arg: Domain | None = None):
+    """
+    Convert hashtags in content in to /tags/<hashtag>/ links.
+    """
+    if not value:
+        return ""
+
+    emojis = emoji_from_domain(arg)
+
+    return Emoji.imageify_emojis(value, emojis=emojis)