feature(chat): add the ability to ping a matrix room

Author: gounux

.env.example

@@ -11,6 +11,16 @@ MAX_STORED_MESSAGES=5
 INSTANCE_ID=abcdefghijklmnopqrstuvwxyz
 ENVIRONMENT=production
 
+REDIS_HOST=redis
+REDIS_PORT=6379
+
 SENTRY_DSN=
 SENTRY_TRACES_SAMPLE_RATE=1
 SENTRY_PROFILES_SAMPLE_RATE=1
+
+MATRIX_CHAT_ENABLED=false
+
+MATRIX_PING_MESSAGE_PREFIX="@matrixping"
+MATRIX_PING_HOMESERVER=
+MATRIX_PING_ROOMID=
+MATRIX_PING_TOKEN=

README.md

@@ -219,6 +219,8 @@ Each of them has a `"type"` key based on which it is possible to parse them :
 > `RULES` environment variable describes the instance's rules. Useful information that users should know, even when skimming content.  
 > `MAX_IMAGE_SIZE` environment variable describes the max size of image in pixels. The server will resize images based on this value.  
 > `MAX_GEOJSON_FEATURES` environment variable describes the max number of features allowed in a `geojson` message. If there is more feature, the message will not be considered and the server will respond with a `uncompliant` message.  
+> `MATRIX_CHAT_ENABLED` environment variable describes if the instance should serve the matrix-related websocket endpoints.
+> `MATRIX_PING_*` environment variables describe the matrix settings to ping a room when a message starts with the `MATRIX_PING_MESSAGE_PREFIX`.
 
 1. Install `docker` using [the official documentation](https://docs.docker.com/engine/install/)
 1. Create a `docker-compose.yaml` file on your server:
@@ -243,6 +245,11 @@ Each of them has a `"type"` key based on which it is possible to parse them :
           - MAX_GEOJSON_FEATURES=500
           - MAX_STORED_MESSAGES=5
           - REDIS_HOST=redis
+          - MATRIX_CHAT_ENABLED=false
+          - MATRIX_PING_MESSAGE_PREFIX="@matrixping"
+          - MATRIX_PING_HOMESERVER=https://my.matrix.server.net
+          - MATRIX_PING_ROOMID=!id:my.matrix.server.net
+          - MATRIX_PING_TOKEN=mat_token
         ports:
           - 8000:8000
         restart: unless-stopped

gischat/app.py

@@ -21,10 +21,15 @@
 from gischat.dispatchers import (
     MatrixDispatcher,
     RedisDispatcher,
+    forward_message_to_matrix_channel,
     get_redis_channel_key,
 )
 from gischat.env import (
-    MATRIX_ENABLED,
+    MATRIX_CHAT_ENABLED,
+    MATRIX_PING_HOMESERVER,
+    MATRIX_PING_MESSAGE_PREFIX,
+    MATRIX_PING_ROOMID,
+    MATRIX_PING_TOKEN,
     REDIS_HOST,
     REDIS_PORT,
     REDIS_URL,
@@ -283,6 +288,18 @@ async def websocket_endpoint(websocket: WebSocket, channel: str) -> None:
                     if message.text not in QCHAT_CHEATCODES:
                         redis_dispatcher.store_message(channel, message)
 
+                    if (
+                        message.text.startswith(MATRIX_PING_MESSAGE_PREFIX)
+                        and MATRIX_PING_MESSAGE_PREFIX
+                        and MATRIX_PING_HOMESERVER
+                        and MATRIX_PING_ROOMID
+                        and MATRIX_PING_TOKEN
+                    ):
+                        logger.info(
+                            f"🏓 [{channel}]: Matrix ping received, forwarding to Matrix channel."
+                        )
+                        await forward_message_to_matrix_channel(message, channel)
+
                 # image message
                 if message.type == QChatMessageTypeEnum.IMAGE:
                     message = QChatImageMessage(**payload)
@@ -420,7 +437,7 @@ async def websocket_endpoint(websocket: WebSocket, channel: str) -> None:
 matrix_dispatcher = MatrixDispatcher.instance()
 
 
-if MATRIX_ENABLED:
+if MATRIX_CHAT_ENABLED:
 
     @app.get("/matrix", response_class=HTMLResponse)
     async def get_matrix_ws_page(request: Request):
@@ -475,7 +492,6 @@ async def matrix_websocket_endpoint(websocket: WebSocket, request_id: UUID) -> N
 
                     # text message
                     if message.type == QChatMessageTypeEnum.TEXT:
-                        print("payload: ", payload)
                         message = QMatrixChatTextMessage(**payload)
 
                         logger.info(

gischat/dispatchers.py

@@ -2,6 +2,7 @@
 from functools import partial
 from uuid import UUID, uuid4
 
+import markdown
 from fastapi import WebSocket
 from fastapi.encoders import jsonable_encoder
 from nio import AsyncClient, MatrixRoom, RoomMessageText
@@ -11,6 +12,9 @@
 from gischat.env import (
     INSTANCE_CHANNELS,
     INSTANCE_ID,
+    MATRIX_PING_HOMESERVER,
+    MATRIX_PING_ROOMID,
+    MATRIX_PING_TOKEN,
     MAX_STORED_MESSAGES,
     REDIS_HOST,
     REDIS_PORT,
@@ -22,6 +26,7 @@
     QChatMessageModel,
     QChatNbUsersMessage,
     QChatNewcomerMessage,
+    QChatTextMessage,
     QMatrixChatTextMessage,
     parse_qchat_message,
 )
@@ -407,3 +412,34 @@ async def on_matrix_text_message_received(
         )
 
         await websocket.send_json(jsonable_encoder(message))
+
+
+async def forward_message_to_matrix_channel(
+    message: QChatTextMessage, channel: str
+) -> None:
+    """
+    Forwards a QChat text message to a Matrix channel.
+    :param message: QChat text message to forward.
+    :param channel: QChat channel where the message originated.
+    """
+
+    client = AsyncClient(homeserver=MATRIX_PING_HOMESERVER)
+    client.access_token = MATRIX_PING_TOKEN
+
+    try:
+        body_md = f"""💬 QChat message in channel **{channel}** by _{message.author}_:
+{message.text}"""
+        body_html = markdown.markdown(body_md)
+
+        await client.room_send(
+            room_id=MATRIX_PING_ROOMID,
+            message_type="m.room.message",
+            content={
+                "msgtype": "m.text",
+                "body": body_md,
+                "format": "org.matrix.custom.html",
+                "formatted_body": body_html,
+            },
+        )
+    finally:
+        await client.close()

gischat/env.py

@@ -10,4 +10,13 @@
 REDIS_PORT = int(os.getenv("REDIS_PORT", "6379"))
 REDIS_URL = f"redis://{REDIS_HOST}:{REDIS_PORT}"
 
-MATRIX_ENABLED = os.getenv("MATRIX_ENABLED", "false").lower() in ("true", "1", "yes")
+MATRIX_CHAT_ENABLED = os.getenv("MATRIX_CHAT_ENABLED", "false").lower() in (
+    "true",
+    "1",
+    "yes",
+)
+
+MATRIX_PING_MESSAGE_PREFIX = os.getenv("MATRIX_PING_MESSAGE_PREFIX", "@matrixping")
+MATRIX_PING_HOMESERVER = os.getenv("MATRIX_PING_HOMESERVER", "")
+MATRIX_PING_ROOMID = os.getenv("MATRIX_PING_ROOMID", "")
+MATRIX_PING_TOKEN = os.getenv("MATRIX_PING_TOKEN", "")

pyproject.toml

@@ -19,6 +19,7 @@ dependencies = [
     "redis>=7.1.0,<8",
     "asyncio>=4.0.0,<5",
     "matrix-nio>=0.25.2,<0.26",
+    "markdown>=3.10",
 ]
 
 [dependency-groups]