[P] Improve marker removal architecture to allow for future extensions

MapView/datasource.py

@@ -37,6 +37,7 @@ class Datasource:
         self.user_id = user_id
         self.connection_status = None
         self._new_points = []
+        self._active_markers = []
         asyncio.ensure_future(self.connect_to_server())
 
     def get_new_points(self):
@@ -60,6 +61,20 @@ class Datasource:
                     self.connection_status = "Disconnected"
                     Logger.debug("SERVER DISCONNECT")
 
+    def map_lat_lon_to_ProcessedAgentData(self, lat: float, lon: float) -> ProcessedAgentData | None:
+        distances = tuple((abs(lon - marker.latitude) ** 2 + abs(lat - marker.longitude) ** 2) ** 0.5 for marker in self._active_markers)
+
+        if len(distances) == 0:
+            return None
+
+        min_distance = min(distances)
+        marker = self._active_markers[distances.index(min_distance)]
+
+        if min_distance < 0.005:
+            return marker
+        else:
+            return None
+
     def handle_received_data(self, data):
         # Update your UI or perform actions with received data here
         Logger.debug(f"Received data: {data}")
@@ -70,6 +85,9 @@ class Datasource:
             ],
             key=lambda v: v.timestamp,
         )
+
+        self._active_markers += [i for i in processed_agent_data_list if i.road_state != 'normal']
+
         new_points = [
             (
                 processed_agent_data.longitude,

MapView/main.py

@@ -15,18 +15,31 @@ line_layer_colors = [
     [1, 0, 1, 1],
 ]
 
+
+def get_lat_lon(point: dict[str, float] | list[float] | tuple[float, float]) -> tuple[float, float] | None:
+    if isinstance(point, dict):
+        lat = point.get("lat")
+        lon = point.get("lon")
+    else:
+        lat, lon = point
+
+    if lat is None or lon is None:
+        return None
+    return lat, lon
+
+
 class MapViewApp(App):
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
 
-        self.mapview = None
+        self.mapview: MapView | None = None
         self.datasource = Datasource(user_id=1)
         self.line_layers = dict()
         self.car_markers = dict()
 
         # додати необхідні змінні
-        self.bump_markers = []
+        self.bump_markers: list[MapMarker] = []
-        self.pothole_markers = []
+        self.pothole_markers: list[MapMarker] = []
 
     def on_start(self):
         """
@@ -91,13 +104,12 @@ class MapViewApp(App):
         if user_id == config.TRACK_ID:
             self.mapview.center_on(lat, lon)
 
-    def set_pothole_marker(self, point):
+    def map_lat_lon_to_marker(self, lat: float, lon: float) -> MapMarker | None:
-        if isinstance(point, dict):
+        flt = filter(lambda marker: lon == marker.lat and lat == marker.lon, self.pothole_markers + self.bump_markers)
-            lat = point.get("lat")
+        return next(flt)
-            lon = point.get("lon")
-        else:
-            lat, lon = point
 
+    def set_pothole_marker(self, point):
+        lat, lon = get_lat_lon(point)
         if lat is None or lon is None:
             return
 
@@ -111,24 +123,47 @@ class MapViewApp(App):
         self.pothole_markers.append(marker)
 
     def set_bump_marker(self, point):
-        if isinstance(point, dict):
+        lat, lon = get_lat_lon(point)
-            lat = point.get("lat")
-            lon = point.get("lon")
-        else:
-            lat, lon = point
-
         if lat is None or lon is None:
             return
-        
+
         marker = MapMarker(
             lat=lat,
             lon=lon,
-            source="images/bump.png"  
+            source="images/bump.png"
         )
 
         self.mapview.add_marker(marker)
         self.bump_markers.append(marker)
 
+    def delete_pothole_marker(self, point):
+        lat, lon = get_lat_lon(point)
+        if lat is None or lon is None:
+            return
+
+        clicked_marker_data = self.datasource.map_lat_lon_to_ProcessedAgentData(lat, lon)
+
+        if not clicked_marker_data:
+            return
+
+        clicked_marker = self.map_lat_lon_to_marker(clicked_marker_data.latitude, clicked_marker_data.longitude)
+
+        self.mapview.remove_marker(clicked_marker)
+
+        pothole_index = self.pothole_markers.index(clicked_marker)
+        bump_index = self.bump_markers.index(clicked_marker)
+
+        if pothole_marker >= 0:
+            self.pothole_markers.pop(pothole_index)
+        elif bump_index >= 0:
+            self.bump_markers.pop(bump_index)
+
+    def on_touch_down(self, widget, touch):
+        if touch.button == "right":
+            coordinate = self.mapview.get_latlon_at(touch.x, touch.y, self.mapview.zoom)
+            self.delete_pothole_marker(coordinate)
+            return True
+
 
     def build(self):
         """
@@ -141,6 +176,8 @@ class MapViewApp(App):
             lon=30.5234
         )
 
+        self.mapview.bind(on_touch_down = self.on_touch_down)
+
         return self.mapview
 
 

store/docker/db/structure.sql

@@ -7,5 +7,6 @@ CREATE TABLE processed_agent_data (
     z FLOAT,
     latitude FLOAT,
     longitude FLOAT,
-    timestamp TIMESTAMP
+    timestamp TIMESTAMP,
-);
+    visible BOOLEAN
+);

store/main.py

@@ -8,12 +8,13 @@ from sqlalchemy import (
     Integer,
     String,
     Float,
+    Boolean,
     DateTime,
 )
 from sqlalchemy.sql import select
 
 from database import metadata, SessionLocal
-from schemas import ProcessedAgentData, ProcessedAgentDataInDB
+from schemas import ProcessedAgentData, ProcessedAgentDataInDB, WebSocketData
 
 # FastAPI app setup
 app = FastAPI()
@@ -30,6 +31,7 @@ processed_agent_data = Table(
     Column("latitude", Float),
     Column("longitude", Float),
     Column("timestamp", DateTime),
+    Column("visible", Boolean),
 )
 
 # WebSocket subscriptions
@@ -57,7 +59,24 @@ async def websocket_endpoint(websocket: WebSocket, user_id: int):
 
         # receive forever
         while True:
-            await websocket.receive_text()
+            data = await websocket.receive_text()
+            try:
+                if (data):
+                    ws_data = WebSocketData.model_validate(json.loads(data))
+                    session = SessionLocal()
+                    update_query = (
+                        processed_agent_data.update()
+                        .where(processed_agent_data.c.id == ws_data.id)
+                        .values(visible=False)
+                    ).returning(processed_agent_data)
+                    res = session.execute(update_query).fetchone()
+                    if (not res):
+                        session.rollback()
+                        raise Exception("Error while websocket PUT")
+                    session.commit()
+            finally:
+                session.close()                  
+         
     except WebSocketDisconnect:
         subscriptions.remove(websocket)
 
@@ -81,6 +100,7 @@ def ProcessedAgentData_to_td(data: List[ProcessedAgentData]):
                 "latitude": item.agent_data.gps.latitude,
                 "longitude": item.agent_data.gps.longitude,
                 "timestamp": item.agent_data.timestamp,
+                "visible": True,
             }
             for item in data
         ]

store/schemas.py

@@ -49,3 +49,7 @@ class AgentData(BaseModel):
 class ProcessedAgentData(BaseModel):
     road_state: str
     agent_data: AgentData
+    
+class WebSocketData(BaseModel):
+    id: int
+