fix: restrict map route domain to Chennai region and implement numbered stop markers

telegram-bot/coordinates_cache.json

@@ -167,10 +167,6 @@
     "lat": 13.0118,
     "lng": 80.0214
   },
-  "Ayyampettai": {
-    "lat": 10.8962881,
-    "lng": 79.1886395
-  },
   "Ayyangarkulam": {
     "lat": 13.0118,
     "lng": 80.0214
@@ -178,5 +174,473 @@
   "Ayyapanthangal": {
     "lat": 13.041,
     "lng": 80.1412
+  },
+  "B.B.Road": {
+    "lat": 13.0095255,
+    "lng": 80.2537619
+  },
+  "BDO Office": {
+    "lat": 12.9022177,
+    "lng": 80.0257182
+  },
+  "Bai Kadai": {
+    "lat": 13.0198261,
+    "lng": 80.1430544
+  },
+  "Balaji Dental College": {
+    "lat": 12.9441308,
+    "lng": 80.208506
+  },
+  "Banavaram koot": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Beach Station": {
+    "lat": 13.0942257,
+    "lng": 80.2921033
+  },
+  "Bharath College": {
+    "lat": 12.9079915,
+    "lng": 80.1394791
+  },
+  "Bharathi nagar": {
+    "lat": 13.1226511,
+    "lng": 80.2237949
+  },
+  "Butt Road": {
+    "lat": 13.0084,
+    "lng": 80.1987
+  },
+  "Butt road": {
+    "lat": 13.0084,
+    "lng": 80.1987
+  },
+  "CIT Nagar": {
+    "lat": 13.0293843,
+    "lng": 80.2342825
+  },
+  "CMBT (Koyambedu)": {
+    "lat": 13.0678,
+    "lng": 80.2054
+  },
+  "CRP": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "CRPF": {
+    "lat": 12.9912054,
+    "lng": 80.1881366
+  },
+  "Camp Road ICICI Bank": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Camp Road Singal": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Canara Bank": {
+    "lat": 12.9764294,
+    "lng": 80.2224084
+  },
+  "Central": {
+    "lat": 13.0827,
+    "lng": 80.2707
+  },
+  "Chembarambakkam": {
+    "lat": 13.016769,
+    "lng": 80.1367942
+  },
+  "Chengalpattu Bypass": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Chengalpattu Rattinakinaru": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Chennai Trade Centre": {
+    "lat": 13.0142534,
+    "lng": 80.1905788
+  },
+  "Chennirkuppam": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Cheriyan Hospital": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Cheyyar-SBI": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Chinmaiya Nagar": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Chintadripet (Post Offiec)": {
+    "lat": 13.0761258,
+    "lng": 80.270781
+  },
+  "Chintamani": {
+    "lat": 13.0472403,
+    "lng": 80.1853252
+  },
+  "Chinthamani": {
+    "lat": 13.0410061,
+    "lng": 80.2373742
+  },
+  "Chithukadu Blue": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Choolai Post Office": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Choolaimedu": {
+    "lat": 13.0666515,
+    "lng": 80.230974
+  },
+  "Choolaimedu Subway": {
+    "lat": 13.0645,
+    "lng": 80.2224
+  },
+  "Choolaimedu bus stop": {
+    "lat": 13.0666287,
+    "lng": 80.2305198
+  },
+  "Chrompet": {
+    "lat": 12.961,
+    "lng": 80.1462
+  },
+  "Collector Nagar": {
+    "lat": 13.0884944,
+    "lng": 80.1909707
+  },
+  "Collector Office": {
+    "lat": 13.0959177,
+    "lng": 80.2922668
+  },
+  "Collector nagar": {
+    "lat": 13.0884944,
+    "lng": 80.1909707
+  },
+  "D.R.Super Market": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "D1 Police Station": {
+    "lat": 13.0683459,
+    "lng": 80.2135958
+  },
+  "Dasprakash": {
+    "lat": 13.0811,
+    "lng": 80.2524
+  },
+  "Deepam Foods": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Donbosco": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "E.B": {
+    "lat": 13.0869258,
+    "lng": 80.2194441
+  },
+  "E.B. Stop": {
+    "lat": 13.0869258,
+    "lng": 80.2194441
+  },
+  "Eaga Theatre": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Egambaranathar Koil": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Egmore": {
+    "lat": 13.0792,
+    "lng": 80.2598
+  },
+  "Ekkatuthangal": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Elango Nagar": {
+    "lat": 12.9715538,
+    "lng": 80.2523792
+  },
+  "Ellaimman Koil": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Erumaiyur": {
+    "lat": 12.9547388,
+    "lng": 80.0815988
+  },
+  "Eswar Nagar": {
+    "lat": 13.0577106,
+    "lng": 80.2190678
+  },
+  "G3 Police Station": {
+    "lat": 13.0683459,
+    "lng": 80.2135958
+  },
+  "GRT": {
+    "lat": 12.9826003,
+    "lng": 80.2181059
+  },
+  "Ganga Cinima": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Gangaiamman koil": {
+    "lat": 13.0551756,
+    "lng": 80.1913579
+  },
+  "Gerugambakkam": {
+    "lat": 13.0152345,
+    "lng": 80.1368538
+  },
+  "Golden Flats": {
+    "lat": 13.0883017,
+    "lng": 80.1784121
+  },
+  "Golden flat": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Govardhanagari": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Govarthanagiri Bus Stand": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Government Hospital": {
+    "lat": 13.1093369,
+    "lng": 80.2312849
+  },
+  "Gudalore": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Guduvanchery": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Guindy": {
+    "lat": 13.0067,
+    "lng": 80.2206
+  },
+  "HDFC Bank": {
+    "lat": 13.0308653,
+    "lng": 80.2455467
+  },
+  "HVF": {
+    "lat": 13.0293266,
+    "lng": 80.1667524
+  },
+  "Housing Board": {
+    "lat": 13.0084674,
+    "lng": 80.2475552
+  },
+  "ICF Church": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "ICF Signal": {
+    "lat": 13.1001091,
+    "lng": 80.2145485
+  },
+  "IOB Bank": {
+    "lat": 13.0224668,
+    "lng": 80.2230059
+  },
+  "Ice House Police Station": {
+    "lat": 13.052,
+    "lng": 80.2762
+  },
+  "Indian Bank Thiruvninravur": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Indira Gandhi Nagar": {
+    "lat": 13.0914233,
+    "lng": 80.2541906
+  },
+  "Indra Nagar (KPM Railwaygate)": {
+    "lat": 13.0370804,
+    "lng": 80.1887213
+  },
+  "Irungattukottai bus stand": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Iyyappanthangal": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "JJ Nagar": {
+    "lat": 13.0790498,
+    "lng": 80.1719442
+  },
+  "JJ Nagar Police Station": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Janappanchatram Bypass": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Jaya College": {
+    "lat": 13.1225267,
+    "lng": 80.0454078
+  },
+  "Jayalakshmi Theatre": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Jeyachandran": {
+    "lat": 12.9211296,
+    "lng": 80.1968403
+  },
+  "Joint Office": {
+    "lat": 13.101916,
+    "lng": 80.230392
+  },
+  "Joshua School": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Jothi Nagar": {
+    "lat": 12.9459767,
+    "lng": 80.239775
+  },
+  "K4 Police Station": {
+    "lat": 13.0925413,
+    "lng": 80.2179712
+  },
+  "KK Nagar": {
+    "lat": 13.0373,
+    "lng": 80.2045
+  },
+  "KK Nagar ESI": {
+    "lat": 13.0373,
+    "lng": 80.2045
+  },
+  "Kachapeswarar Koil": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kaduveti": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kaiveli": {
+    "lat": 12.9633783,
+    "lng": 80.2160859
+  },
+  "Kakkalur": {
+    "lat": 13.1305159,
+    "lng": 79.9243758
+  },
+  "Kakkalur Signal": {
+    "lat": 13.1305159,
+    "lng": 79.9243758
+  },
+  "Kakkan Bridge": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kallikuppam": {
+    "lat": 13.1331405,
+    "lng": 80.1701786
+  },
+  "Kalmandapam": {
+    "lat": 13.1153712,
+    "lng": 80.2905548
+  },
+  "Kalpana Lamp": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kalyan Jewalrs": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kamarajapuram": {
+    "lat": 13.1933419,
+    "lng": 80.2612852
+  },
+  "Kambar Colony": {
+    "lat": 12.9755337,
+    "lng": 80.2296597
+  },
+  "Ayyampettai": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Chitteri": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Ganeshapuram": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kamban Nagar": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kammal Street": {
+    "lat": 13.0903441,
+    "lng": 80.2791264
+  },
+  "Kammala street": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kankaiyamman Kovil": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kannadhasan Nagar": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Karanodai Bypass": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Karapakkam": {
+    "lat": 12.9117073,
+    "lng": 80.2277203
+  },
+  "Karapakkam - TCS": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Karayanchavadi": {
+    "lat": 13.0467114,
+    "lng": 80.1109051
+  },
+  "Karima Nagar": {
+    "lat": 13.0118,
+    "lng": 80.0214
+  },
+  "Kasi Theatre": {
+    "lat": 13.0305,
+    "lng": 80.2132
+  },
+  "Kasimedu": {
+    "lat": 13.1364038,
+    "lng": 80.2958012
   }
 }

telegram-bot/geocode_bus_routes.py

@@ -9,6 +9,13 @@ CURRENT_DIR = os.path.dirname(os.path.abspath(__file__))
 BUS_ROUTES_PATH = os.path.abspath(os.path.join(CURRENT_DIR, "..", "backend", "src", "main", "resources", "bus_routes.json"))
 CACHE_PATH = os.path.join(CURRENT_DIR, "coordinates_cache.json")
 
+# Domain restriction (Chennai, Tiruvallur, Kanchipuram districts)
+MIN_LAT, MAX_LAT = 12.7, 13.4
+MIN_LNG, MAX_LNG = 79.6, 80.4
+
+def is_valid_coordinate(lat, lng):
+    return MIN_LAT <= lat <= MAX_LAT and MIN_LNG <= lng <= MAX_LNG
+
 # Predefined coordinates for hard-to-geocode stops or fallback landmarks in Chennai
 STATIC_COORDINATES = {
     "RIT Campus": {"lat": 13.0118, "lng": 80.0214},
@@ -68,7 +75,15 @@ def load_cache():
     if os.path.exists(CACHE_PATH):
         try:
             with open(CACHE_PATH, "r", encoding="utf-8") as f:
-                return json.load(f)
+                data = json.load(f)
+                # Clean coordinates that are outside the map route domain
+                cleaned = {}
+                for name, coords in data.items():
+                    if is_valid_coordinate(coords["lat"], coords["lng"]):
+                        cleaned[name] = coords
+                    else:
+                        print(f"Removing invalid cache entry for '{name}': {coords}")
+                return cleaned
         except Exception:
             pass
     return {}
@@ -114,8 +129,11 @@ def geocode_nominatim(name):
                 if data:
                     lat = float(data[0]["lat"])
                     lng = float(data[0]["lon"])
-                    print(f"-> Found: {lat}, {lng}")
-                    return {"lat": lat, "lng": lng}
+                    if is_valid_coordinate(lat, lng):
+                        print(f"-> Found within domain: {lat}, {lng}")
+                        return {"lat": lat, "lng": lng}
+                    else:
+                        print(f"-> Found but DISCARDED (outside domain): {lat}, {lng}")
             # Rest to respect API limit
             time.sleep(1.2)
         except Exception as e:
@@ -132,39 +150,7 @@ def geocode_nominatim(name):
     print(f"-> No match found for '{name}'. Defaulting to RIT Campus.")
     return STATIC_COORDINATES["RIT Campus"]
 
-def geocode_routes():
-    if not os.path.exists(BUS_ROUTES_PATH):
-        print(f"Error: {BUS_ROUTES_PATH} does not exist.")
-        return
-
-    with open(BUS_ROUTES_PATH, "r", encoding="utf-8") as f:
-        routes = json.load(f)
-
-    cache = load_cache()
-    modified = False
-
-    # Collect all unique stop names
-    unique_names = set()
-    for r in routes:
-        unique_names.add(r["from"])
-        unique_names.add(r["to"])
-        for stop in r.get("stops", []):
-            unique_names.add(stop["name"])
-
-    print(f"Total unique stops to geocode: {len(unique_names)}")
-
-    # Geocode each stop
-    count = 0
-    for name in sorted(unique_names):
-        if name not in cache:
-            coords = geocode_nominatim(name)
-            cache[name] = coords
-            count += 1
-            # Save cache incrementally
-            if count % 5 == 0:
-                save_cache(cache)
-    save_cache(cache)
-
+def update_bus_routes_json(routes, cache):
     # Enrich bus_routes.json
     for r in routes:
         from_coords = cache.get(r["from"], STATIC_COORDINATES["RIT Campus"])
@@ -183,7 +169,49 @@ def geocode_routes():
     with open(BUS_ROUTES_PATH, "w", encoding="utf-8") as f:
         json.dump(routes, f, indent=2)
 
-    print("Geocoding process complete! bus_routes.json updated with coordinates.")
+def geocode_routes():
+    if not os.path.exists(BUS_ROUTES_PATH):
+        print(f"Error: {BUS_ROUTES_PATH} does not exist.")
+        return
+
+    with open(BUS_ROUTES_PATH, "r", encoding="utf-8") as f:
+        routes = json.load(f)
+
+    cache = load_cache()
+    
+    # Save the cleaned cache to start
+    save_cache(cache)
+    
+    # Write coordinates to the JSON immediately for any stops that are already in the cache!
+    update_bus_routes_json(routes, cache)
+    print("Initial cache applied to bus_routes.json.")
+
+    # Collect all unique stop names
+    unique_names = set()
+    for r in routes:
+        unique_names.add(r["from"])
+        unique_names.add(r["to"])
+        for stop in r.get("stops", []):
+            unique_names.add(stop["name"])
+
+    print(f"Total unique stops to geocode: {len(unique_names)}")
+
+    # Geocode each stop
+    count = 0
+    for name in sorted(unique_names):
+        if name not in cache:
+            coords = geocode_nominatim(name)
+            cache[name] = coords
+            count += 1
+            # Save cache and update JSON incrementally
+            save_cache(cache)
+            update_bus_routes_json(routes, cache)
+            print(f"Updated routes JSON with '{name}' ({coords['lat']}, {coords['lng']})")
+
+    # Final save
+    save_cache(cache)
+    update_bus_routes_json(routes, cache)
+    print("Geocoding process complete! bus_routes.json fully synchronized.")
 
 if __name__ == "__main__":
     geocode_routes()