Add example for random reactions

README.md

@@ -7,6 +7,8 @@ A [maubot](https://github.com/maubot/maubot) that responds to messages that matc
   and an image response for "alot".
 * [samples/jesari.yaml](samples/jesari.yaml) contains a replacement for [jesaribot](https://github.com/maubot/jesaribot).
 * [samples/stallman.yaml](samples/stallman.yaml) contains a Stallman interject bot.
+* [samples/random-reaction.yaml](samples/random-reaction.yaml) has an example of
+  a randomized reaction to matching messages.
 
 ## Config format
 ### Templates

samples/random-reaction.yaml

@@ -0,0 +1,25 @@
+templates:
+    random_reaction:
+        type: m.reaction
+        variables:
+            react_to_event: '{{event.event_id}}'
+            reaction: '{{ variables.reaction_choices | random }}'
+        content:
+            m.relates_to:
+                rel_type: m.annotation
+                event_id: $${react_to_event}
+                key: $${reaction}
+
+default_flags:
+- ignorecase
+
+rules:
+    random:
+        matches:
+        - hmm
+        template: random_reaction
+        variables:
+            reaction_choices:
+            - 🤔
+            - 🧐
+            - 🤨