Ajouter skill MQTT (publish/subscribe) + paramètres broker dans config

config/config.example.json

@@ -4,5 +4,8 @@
   "xmpp_jid": "agent1@VOTRE_DOMAINE",
   "xmpp_pass": "VOTRE_MOT_DE_PASSE",
   "admin_jid": "vous@VOTRE_DOMAINE",
-  "db_path": "/opt/agent/memory.db"
+  "db_path": "/opt/agent/memory.db",
+  "mqtt_host": "localhost",
+  "mqtt_port": 1883,
+  "mqtt_client_id": "agent1"
 }

skills/mqtt_publish.py

@@ -0,0 +1,78 @@
+"""
+Skill : MQTT_PUBLISH / MQTT_SUBSCRIBE
+Permet à l'agent de communiquer avec d'autres agents via MQTT.
+
+Commandes :
+    MQTT_PUBLISH: <topic> | <message>
+        → Publie un message sur un topic MQTT
+
+    MQTT_SUBSCRIBE: <topic>
+        → Lit le dernier message reçu sur un topic (via fichier cache)
+"""
+import json
+import paho.mqtt.publish as publish
+import paho.mqtt.client as mqtt
+from pathlib import Path
+
+SKILL_NAME = "mqtt"
+TRIGGER    = None
+TRIGGERS   = {
+    "MQTT_PUBLISH:":   "mqtt_publish",
+    "MQTT_SUBSCRIBE:": "mqtt_subscribe",
+}
+
+CONFIG_FILE = Path("/opt/agent/config/config.json")
+CACHE_DIR   = Path("/opt/agent/mqtt_cache")
+
+def _get_cfg():
+    with open(CONFIG_FILE) as f:
+        cfg = json.load(f)
+    return (
+        cfg.get("mqtt_host",      "localhost"),
+        int(cfg.get("mqtt_port",  1883)),
+        cfg.get("mqtt_client_id", "agent1"),
+    )
+
+def mqtt_publish(args: str) -> str:
+    if "|" not in args:
+        return "Erreur : format attendu → MQTT_PUBLISH: <topic> | <message>"
+    topic, _, message = args.partition("|")
+    topic, message = topic.strip(), message.strip()
+    if not topic or not message:
+        return "Erreur : topic ou message vide."
+    try:
+        host, port, _ = _get_cfg()
+        publish.single(topic, payload=message, hostname=host, port=port)
+        return "Message publié sur «{}» : {}".format(topic, message)
+    except Exception as e:
+        return "Erreur MQTT_PUBLISH : {}".format(e)
+
+def mqtt_subscribe(args: str) -> str:
+    topic = args.strip()
+    if not topic:
+        return "Erreur : topic vide."
+    try:
+        host, port, client_id = _get_cfg()
+        received = []
+
+        def on_message(client, userdata, msg):
+            received.append(msg.payload.decode(errors="replace"))
+
+        client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2,
+                             client_id=client_id + "_sub")
+        client.on_message = on_message
+        client.connect(host, port, keepalive=5)
+        client.subscribe(topic)
+        client.loop_start()
+
+        import time
+        time.sleep(2)
+        client.loop_stop()
+        client.disconnect()
+
+        if received:
+            return "Message reçu sur «{}» :\n{}".format(topic, "\n".join(received))
+        return "Aucun message reçu sur «{}» (2s d'attente).".format(topic)
+
+    except Exception as e:
+        return "Erreur MQTT_SUBSCRIBE : {}".format(e)