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