meshtastic-matrix-relay/plugins/map_plugin.py

132 wiersze
3.8 KiB
Python

import staticmaps
import math
import random
import io
import re
from PIL import Image
from nio import AsyncClient, UploadResponse
from base_plugin import BasePlugin
from matrix_utils import connect_matrix
from meshtastic_utils import connect_meshtastic
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):
plugin_name = "map"
async def handle_meshtastic_message(
self, packet, formatted_message, longname, meshnet_name
):
return
async def handle_room_message(self, room, event, full_message):
matrix_client = await connect_matrix()
meshtastic_client = connect_meshtastic()
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 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(matrix_client, room.room_id, pillow_image)