now responds too a message

.env.example

@@ -3,3 +3,6 @@ HOMESERVER_URL = "https://matrix.org"
 USER_ID = "@botbot_user:matrix.org"
 PASSWORD = "botbot_password"
 LOG_LEVEL=INFO
+
+# comma-separated list of rooms or aliases to join on startup
+BOT_ROOMS=!room1:matrix.org,!another-room:matrix.org,!someroomalias:matrix.org

Dockerfile

@@ -3,6 +3,12 @@ FROM python:3.11-slim
 # Set working directory
 WORKDIR /app
 
+# Install system dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+      libolm-dev build-essential python3-dev && \
+    rm -rf /var/lib/apt/lists/*
+
 # Install dependencies
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt

main.py

@@ -29,6 +29,7 @@ async def message_callback(room: MatrixRoom, event: RoomMessageText):
     if event.sender == USER_ID:
         return
     
+    body = event.body.strip().lower()
     logger.info("Message from %s in %s: %s", event.sender, room.display_name, event.body)
 
     if event.body.strip().lower() == "!ping":
@@ -38,13 +39,27 @@ async def message_callback(room: MatrixRoom, event: RoomMessageText):
             content={"msgtype": "m.text", "body": "Pong!"}
         )
         logger.info("Replied with Pong! to %s", event.sender)
+    elif body== "hello botbot":
+        await client.room_send(
+            room_id=room.room_id,
+            message_type="m.room.message",
+            content={
+                "msgtype": "m.text", 
+                "body": "Hello! How can I assist you today?",                
+            },
+            ignore_unverified_devices=True
+        )
+        logger.info("Replied with greeting to %s", event.sender)
 
 async def main():
     global client
     logger.debug(HOMESERVER_URL)
     logger.debug(USER_ID)
     # Configure client with persistent store
-    config = AsyncClientConfig(store_sync_tokens=True)
+    config = AsyncClientConfig(
+        store_sync_tokens=True,
+        encryption_enabled=True,
+    )
     client = AsyncClient(
         HOMESERVER_URL,
         USER_ID,

requirements.txt

@@ -1,2 +1,2 @@
-matrix-nio[aio,http]>=0.25.0
+matrix-nio[e2e]>=0.25.0
 python-dotenv>=1.0.0