plugin: add handling conditions for ques. & cmd.

The main purpose of this feature is to not answer questions when the bot
is not awake in the sleep plugin, but by making it a requirement purely
in the configuration we avoid making some plugins mandatory for the bot.

README.md

@@ -43,7 +43,7 @@ Missing features
 - [ ] Youtube: parsing for title, requests for channel or video
 - [ ] Command aliases
 - [ ] Question aliases
-- [ ] Sleep
+- [x] Sleep
 - [ ] Various macros:
     - [ ] asks someone to stop doing something
     - [ ] king of

config.json.example

@@ -15,7 +15,12 @@
       "opening_text": "/me cracks open a {beer} for {target}"
     },
     "common": {
-      "command_suffix": "please"
+      "command_suffix": "please",
+      "handling_conditions": {
+        "sleep": {
+          "awake": true
+        }
+      }
     },
     "horoscope": {
       "commands": ["horoscope"],

edmond/plugin.py

@@ -9,8 +9,8 @@ class Plugin:
     def __init__(self, bot):
         self.bot = bot
         self.name = self.__class__.__name__.lower()[:-6]  # Remove "Plugin".
-        self.config = self._get_config()
-        self.is_ready = self._check_config()
+        self.config = self.__get_config()
+        self.is_ready = self.__check_config()
 
     @property
     def callbacks(self):
@@ -21,7 +21,7 @@ class Plugin:
             if cb.startswith("on_") and callable(getattr(self, cb))
         }
 
-    def _get_config(self):
+    def __get_config(self):
         """Return the plugin section from the bot config, plus common values."""
         plugins_configs = self.bot.config["plugins"]
         config = plugins_configs["common"].copy()
@@ -37,7 +37,7 @@ class Plugin:
                 self.bot.log_e(f"Could not load resource at {resource_path}.")
         return config
 
-    def _check_config(self):
+    def __check_config(self):
         """Return True if the plugin config is properly setup."""
         missing = False
         for key in self.REQUIRED_CONFIGS:
@@ -88,10 +88,16 @@ class Plugin:
     def should_answer_question(self, message):
         """Store Question in object and return True if it should answer it."""
         words = message.split()
+        # Is the message addressed to me?
         if words[0].lower() not in self.bot.names:
             return False
-        question = message[len(words[0]):].strip()
 
+        # Are the config conditions to answer a question valid?
+        if not self.__respects_handling_conditions():
+            return False
+
+        # Is it a question I can answer?
+        question = message[len(words[0]):].strip()
         for q in self.config.get("questions", []):
             if question.startswith(q):
                 self.question = Question(q, question[len(q):].strip())
@@ -101,9 +107,16 @@ class Plugin:
 
     def should_handle_command(self, message, no_content=False):
         """Store Command in object and return True if it should handle it."""
+        # Are the config conditions to handle a command valid?
+        if not self.__respects_handling_conditions():
+            return False
+
+        # Is it a valid command?
         command = self.parse_command(message, no_content=no_content)
         if not command:
             return False
+
+        # Is it a command I can handle?
         commands = self.config.get("commands", [])
         if (
             any(command.ident == c for c in commands) or
@@ -127,6 +140,19 @@ class Plugin:
                 content = " ".join(words[2:-1])
             return Command(ident, content)
 
+    def __respects_handling_conditions(self):
+        """Check if question conditions are valid."""
+        conditions = self.config.get("handling_conditions", {})
+        for plugin_ns, plugin_conditions in conditions.items():
+            for condition_key, condition_value in plugin_conditions.items():
+                value = self.get_runtime_value(condition_key, ns=plugin_ns)
+                if condition_value != value:
+                    self.bot.log_d(
+                        f"Handling condition {plugin_ns}.{condition_key} false."
+                    )
+                    return False
+        return True
+
     def signal_failure(self, target):
         """Signal a plugin failure to target."""
         self.bot.say(target, self.bot.config["error_message"])