new changes maps

lib/services/maps/map_config.dart

@@ -0,0 +1,44 @@
+/// Map and routing endpoints.
+///
+/// Everything here is open source and keyless:
+///
+/// * **Tiles** — OpenFreeMap (<https://openfreemap.org>), OpenStreetMap data
+///   built with Planetiler and served as MapLibre vector tiles. No API key, no
+///   registration, no request limits, MIT licensed. MapLibre adds the required
+///   attribution automatically.
+/// * **Routing** — OSRM (<https://project-osrm.org>), the Open Source Routing
+///   Machine. Also keyless.
+///
+/// Both are overridable at build time so production can point at self-hosted
+/// instances without a code change:
+///
+///   flutter build apk \
+///     --dart-define=OSRM_BASE_URL=https://osrm.internal.nearle.in \
+///     --dart-define=MAP_STYLE_URL=https://tiles.internal.nearle.in/styles/liberty
+class MapConfig {
+  const MapConfig._();
+
+  /// MapLibre style document. Passed straight to the map — no key to inject,
+  /// so unlike a commercial provider there is nothing to patch or proxy.
+  ///
+  /// OpenFreeMap styles: `liberty` (detailed), `bright`, `positron` (muted).
+  static const String styleUrl = String.fromEnvironment(
+    'MAP_STYLE_URL',
+    defaultValue: 'https://tiles.openfreemap.org/styles/liberty',
+  );
+
+  /// Base URL of an OSRM instance, without a trailing slash.
+  ///
+  /// The default is the FOSSGIS community server. It is free and needs no key,
+  /// but it is donation-funded infrastructure with a fair-use policy — fine for
+  /// development, NOT appropriate for a production delivery fleet. Point this
+  /// at your own OSRM before shipping; see `deploy/osrm/README.md`.
+  static const String osrmBaseUrl = String.fromEnvironment(
+    'OSRM_BASE_URL',
+    defaultValue: 'https://routing.openstreetmap.de/routed-car',
+  );
+
+  /// True when routing points somewhere other than the shared community server.
+  static bool get usingOwnRoutingServer =>
+      !osrmBaseUrl.contains('routing.openstreetmap.de');
+}