Merge pull request #15 from geoffwhittington/feature/map_plugin

Map and Health plugins

.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Build installer
         uses: nadeemjazmawe/inno-setup-action-cli@v6.0.5
         with:
-          filepath: "./mmrelay.iss"
+          filepath: "/DAppVersion=${{ github.ref_name }} ./mmrelay.iss"
 
       - name: Upload setup.exe to release
         uses: svenstaro/upload-release-action@v2

main.py

@@ -10,6 +10,9 @@ import sqlite3
 import yaml
 import certifi
 import ssl
+import os
+import importlib
+import sys
 import meshtastic.tcp_interface
 import meshtastic.serial_interface
 from nio import (
@@ -24,6 +27,7 @@ from pubsub import pub
 from yaml.loader import SafeLoader
 from typing import List, Union
 from datetime import datetime
+from pathlib import Path
 
 
 class CustomFormatter(logging.Formatter):
@@ -112,6 +116,22 @@ def update_longnames():
                 save_longname(meshtastic_id, longname)
 
 
+def load_plugins():
+    plugins = []
+    plugin_folder = Path("plugins")
+    sys.path.insert(0, str(plugin_folder.resolve()))
+
+    for plugin_file in plugin_folder.glob("*.py"):
+        plugin_name = plugin_file.stem
+        if plugin_name == "__init__":
+            continue
+        plugin_module = importlib.import_module(plugin_name)
+        if hasattr(plugin_module, "Plugin"):
+            plugins.append(plugin_module.Plugin())
+
+    return plugins
+
+
 async def join_matrix_room(matrix_client, room_id_or_alias: str) -> None:
     """Join a Matrix room by its ID or alias."""
     try:
@@ -224,6 +244,11 @@ def on_meshtastic_message(packet, loop=None):
             f"Relaying Meshtastic message from {longname} to Matrix: {formatted_message}"
         )
 
+        # Plugin functionality
+        for plugin in plugins:
+            plugin.configure(matrix_client, meshtastic_interface)
+            plugin.on_meshtastic_message(packet, formatted_message)
+
         for room in matrix_rooms:
             if room["meshtastic_channel"] == channel:
                 asyncio.run_coroutine_threadsafe(
@@ -264,10 +289,10 @@ def truncate_message(
 
 # Callback for new messages in Matrix room
 async def on_room_message(
-    room: MatrixRoom, event: Union[RoomMessageText, RoomMessageNotice]) -> None:
-
+    room: MatrixRoom, event: Union[RoomMessageText, RoomMessageNotice]
+) -> None:
     full_display_name = "Unknown user"
-    
+
     if event.sender != bot_user_id:
         message_timestamp = event.server_timestamp
 
@@ -285,12 +310,15 @@ async def on_room_message(
                     short_longname = longname[:3]
                     short_meshnet_name = meshnet_name[:4]
                     prefix = f"{short_longname}/{short_meshnet_name}: "
-                    text = re.sub(rf"^\[{full_display_name}\]: ", "", text)  # Remove the original prefix from the text
+                    text = re.sub(
+                        rf"^\[{full_display_name}\]: ", "", text
+                    )  # Remove the original prefix from the text
                     text = truncate_message(text)
                     full_message = f"{prefix}{text}"
                 else:
                     # This is a message from a local user, it should be ignored no log is needed
                     return
+
             else:
                 display_name_response = await matrix_client.get_displayname(
                     event.sender
@@ -298,7 +326,9 @@ async def on_room_message(
                 full_display_name = display_name_response.displayname or event.sender
                 short_display_name = full_display_name[:5]
                 prefix = f"{short_display_name}[M]: "
-                logger.info(f"Processing matrix message from [{full_display_name}]: {text}")
+                logger.info(
+                    f"Processing matrix message from [{full_display_name}]: {text}"
+                )
                 text = truncate_message(text)
                 full_message = f"{prefix}{text}"
 
@@ -308,6 +338,11 @@ async def on_room_message(
                     room_config = config
                     break
 
+            # Plugin functionality
+            for plugin in plugins:
+                plugin.configure(matrix_client, meshtastic_interface)
+                await plugin.handle_room_message(room, event, full_message)
+
             if room_config:
                 meshtastic_channel = room_config["meshtastic_channel"]
 
@@ -315,8 +350,10 @@ async def on_room_message(
                     logger.info(
                         f"Sending radio message from {full_display_name} to radio broadcast"
                     )
-                    meshtastic_interface.sendText(text=full_message, channelIndex=meshtastic_channel
+                    meshtastic_interface.sendText(
+                        text=full_message, channelIndex=meshtastic_channel
                     )
+
                 else:
                     logger.debug(
                         f"Broadcast not supported: Message from {full_display_name} dropped."
@@ -325,6 +362,8 @@ async def on_room_message(
 
 async def main():
     global matrix_client
+    global plugins
+    plugins = load_plugins()
 
     # Initialize the SQLite database
     initialize_database()
@@ -378,4 +417,4 @@ async def main():
         await asyncio.sleep(60)  # Update longnames every 60 seconds
 
 
-asyncio.run(main())
+asyncio.run(main())

mmrelay.iss

@@ -4,7 +4,7 @@
 //WizardSmallImageFile=smallwiz.bmp
 
 AppName=Matrix <> Meshtastic Relay
-AppVersion=0.3.5
+AppVersion={#AppVersion}
 DefaultDirName={userpf}\MM Relay
 DefaultGroupName=MM Relay
 UninstallFilesDir={app}

plugins/base_plugin.py

@@ -0,0 +1,17 @@
+from abc import ABC, abstractmethod
+
+
+class BasePlugin(ABC):
+    def configure(self, matrix_client, meshtastic_client) -> None:
+        self.matrix_client = matrix_client
+        self.meshtastic_client = meshtastic_client
+
+    @abstractmethod
+    async def handle_meshtastic_message(
+        packet, formatted_message, longname, meshnet_name
+    ):
+        print("Base plugin: handling Meshtastic message")
+
+    @abstractmethod
+    async def handle_room_message(room, event, full_message):
+        print("Base plugin: handling room message")

plugins/health_plugin.py

@@ -0,0 +1,47 @@
+import re
+import statistics
+from base_plugin import BasePlugin
+
+
+class Plugin(BasePlugin):
+    async def handle_meshtastic_message(
+        self, packet, formatted_message, longname, meshnet_name
+    ):
+        return
+
+    async def handle_room_message(self, room, event, full_message):
+        match = re.match(r"^.*: !health$", full_message)
+        if match:
+            battery_levels = []
+            air_util_tx = []
+            snr = []
+
+            for node, info in self.meshtastic_client.nodes.items():
+                if "deviceMetrics" in info:
+                    battery_levels.append(info["deviceMetrics"]["batteryLevel"])
+                    air_util_tx.append(info["deviceMetrics"]["airUtilTx"])
+                if "snr" in info:
+                    snr.append(info["snr"])
+
+            low_battery = len([n for n in battery_levels if n <= 10])
+            radios = len(self.meshtastic_client.nodes)
+            avg_battery = statistics.mean(battery_levels) if battery_levels else 0
+            mdn_battery = statistics.median(battery_levels)
+            avg_air = statistics.mean(air_util_tx) if air_util_tx else 0
+            mdn_air = statistics.median(air_util_tx)
+            avg_snr = statistics.mean(snr) if snr else 0
+            mdn_snr = statistics.median(snr)
+
+            response = await self.matrix_client.room_send(
+                room_id=room.room_id,
+                message_type="m.room.message",
+                content={
+                    "msgtype": "m.text",
+                    "body": f"""Nodes: {radios}
+Battery: {avg_battery:.1f}% / {mdn_battery:.1f}% (avg / median)
+Nodes with Low Battery (< 10): {low_battery}
+Air Util: {avg_air:.2f} / {mdn_air:.2f} (avg / median)
+SNR: {avg_snr:.2f} / {mdn_snr:.2f} (avg / median)
+""",
+                },
+            )

plugins/map_plugin.py

@@ -0,0 +1,122 @@
+import staticmaps
+import math
+import random
+import io
+import re
+from PIL import Image
+from nio import AsyncClient, UploadResponse
+from base_plugin import BasePlugin
+
+
+def anonymize_location(lat, lon, radius=1000):
+    # Generate random offsets for latitude and longitude
+    lat_offset = random.uniform(-radius / 111320, radius / 111320)
+    lon_offset = random.uniform(
+        -radius / (111320 * math.cos(lat)), radius / (111320 * math.cos(lat))
+    )
+
+    # Apply the offsets to the location coordinates
+    new_lat = lat + lat_offset
+    new_lon = lon + lon_offset
+
+    return new_lat, new_lon
+
+
+def get_map(locations, zoom=None, image_size=None, radius=10000):
+    """
+    Anonymize a location to 10km by default
+    """
+    context = staticmaps.Context()
+    context.set_tile_provider(staticmaps.tile_provider_OSM)
+    context.set_zoom(zoom)
+
+    for location in locations:
+        new_location = anonymize_location(
+            lat=float(location["lat"]),
+            lon=float(location["lon"]),
+            radius=radius,
+        )
+        radio = staticmaps.create_latlng(new_location[0], new_location[1])
+        context.add_object(staticmaps.Marker(radio, size=10))
+
+    # render non-anti-aliased png
+    if image_size:
+        return context.render_pillow(image_size[0], image_size[1])
+    else:
+        return context.render_pillow(1000, 1000)
+
+
+async def upload_image(client: AsyncClient, image: Image.Image) -> UploadResponse:
+    buffer = io.BytesIO()
+    image.save(buffer, format="PNG")
+    image_data = buffer.getvalue()
+
+    response, maybe_keys = await client.upload(
+        io.BytesIO(image_data),
+        content_type="image/png",
+        filename="location.png",
+        filesize=len(image_data),
+    )
+
+    return response
+
+
+async def send_room_image(
+    client: AsyncClient, room_id: str, upload_response: UploadResponse
+):
+    response = await client.room_send(
+        room_id=room_id,
+        message_type="m.room.message",
+        content={"msgtype": "m.image", "url": upload_response.content_uri, "body": ""},
+    )
+
+
+async def send_image(client: AsyncClient, room_id: str, image: Image.Image):
+    response = await upload_image(client=client, image=image)
+    await send_room_image(client, room_id, upload_response=response)
+
+
+class Plugin(BasePlugin):
+    async def handle_meshtastic_message(
+        self, packet, formatted_message, longname, meshnet_name
+    ):
+        return
+
+    async def handle_room_message(self, room, event, full_message):
+        pattern = r"^.*:(?: !map(?: zoom=(\d+))?(?: size=(\d+),(\d+))?)?$"
+        match = re.match(pattern, full_message)
+        if match:
+            zoom = match.group(1)
+            image_size = match.group(2, 3)
+
+            try:
+                zoom = int(zoom)
+            except:
+                zoom = 8
+
+            if zoom < 0 or zoom > 30:
+                zoom = 8
+
+            try:
+                image_size = (int(image_size[0]), int(image_size[1]))
+            except:
+                image_size = (1000, 1000)
+
+            if image_size[0] > 1000 or image_size[1] > 1000:
+                image_size = (1000, 1000)
+
+            locations = []
+            for node, info in self.meshtastic_client.nodes.items():
+                if "position" in info and "latitude" in info["position"]:
+                    locations.append(
+                        {
+                            "lat": info["position"]["latitude"],
+                            "lon": info["position"]["longitude"],
+                        }
+                    )
+
+            pillow_image = get_map(
+                locations=locations, zoom=zoom, image_size=image_size
+            )
+
+            await send_image(self.matrix_client, room.room_id, pillow_image)