Add auto react module (#614)

This adds a module that allows the bot to react based on keywords or phrases defined in the config

techsupport_bot/extensions/autoreact.py

@@ -0,0 +1,61 @@
+"""Module for the autoreact extension for the discord bot."""
+import base
+from base import auxiliary
+
+
+async def setup(bot):
+    """Adding the autoreact extension to the config file to get info."""
+    config = bot.ExtensionConfig()
+    config.add(
+        key="react_map",
+        datatype="dict",
+        title="Mapping of phrases",
+        description="Lowercase phrase to reaction wanted",
+        default={"hello": "👋"},
+    )
+
+    await bot.add_cog(AutoReact(bot=bot, extension_name="autoreact"))
+    bot.add_extension_config("autoreact", config)
+
+
+class AutoReact(base.MatchCog):
+    """Class for the autoreact to make it to discord."""
+
+    async def match(self, config, _, content):
+        """A match function to determine if somehting should be reacted to
+
+        Args:
+            config (munch.Munch): The guild config for the running bot
+            _ (commands.Context): The context in which the message was sent in
+            content (str): The string content of the message
+
+        Returns:
+            bool: True if there needs to be a reaction, False otherwise
+        """
+        search_content = f" {content} "
+        search_content = search_content.lower()
+        for word in config.extensions.autoreact.react_map.value:
+            if f" {word.lower()} " in search_content:
+                return True
+        return False
+
+    async def response(self, config, ctx, content, _):
+        """The function to generate and add reactions
+
+        Args:
+            config (munch.Munch): The guild config for the running bot
+            ctx (commands.Context): The context in which the message was sent in
+            content (str): The string content of the message
+            _ (bool): The result from the match function
+        """
+        search_content = f" {content} "
+        search_content = search_content.lower()
+        reactions = []
+        for word in config.extensions.autoreact.react_map.value:
+            if f" {word.lower()} " in search_content:
+                reaction = config.extensions.autoreact.react_map.value.get(word)
+                if reaction not in reactions:
+                    reactions.append(
+                        config.extensions.autoreact.react_map.value.get(word)
+                    )
+        await auxiliary.add_list_of_reactions(message=ctx.message, reactions=reactions)