85 lines
3.4 KiB
Dart
85 lines
3.4 KiB
Dart
import 'road_alert_models.dart';
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/// Regional regulatory compliance status for speed cameras and enforcement traps.
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enum AlertComplianceJurisdiction {
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/// Exact distance countdown, camera type, and mobile speed trap locations (e.g. United States, UK).
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standard,
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/// French "Zone de Danger" regulatory compliance (Art. R413-15 Code de la route).
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/// Exact camera pinpoints are prohibited and transformed into general Danger Zone corridor advisories.
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frenchDangerZone,
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/// Jurisdictions where speed camera warning devices and software are strictly prohibited
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/// while driving (e.g. Germany § 23 Abs. 1c StVO, Switzerland Art. 57b SVG).
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/// Camera and radar trap alerts must be suppressed.
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prohibited,
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}
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/// Evaluates and enforces regional compliance rules on road alerts.
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class RoadAlertCompliance {
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/// Evaluates regional regulatory compliance based on rider GPS coordinates.
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static AlertComplianceJurisdiction evaluateJurisdiction(double lat, double lng) {
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// Switzerland: Lat [45.81, 47.81], Lng [5.95, 10.49]
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if (lat >= 45.81 && lat <= 47.81 && lng >= 5.95 && lng <= 10.49) {
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return AlertComplianceJurisdiction.prohibited;
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}
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// Germany: Lat [47.27, 55.06], Lng [5.86, 15.04]
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if (lat >= 47.27 && lat <= 55.06 && lng >= 5.86 && lng <= 15.04) {
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return AlertComplianceJurisdiction.prohibited;
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}
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// France: Lat [41.33, 51.09], Lng [-5.14, 9.56]
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// Exclude Switzerland/Germany overlap
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if (lat >= 41.33 && lat <= 51.09 && lng >= -5.14 && lng <= 9.56) {
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return AlertComplianceJurisdiction.frenchDangerZone;
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}
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// Default: United States (all 50 states + DC) and other standard jurisdictions
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return AlertComplianceJurisdiction.standard;
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}
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/// Filters or transforms alerts to satisfy jurisdictional requirements.
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static List<RoadAlert> applyCompliance(
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List<RoadAlert> alerts, {
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required double userLat,
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required double userLng,
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bool complianceEnabled = true,
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}) {
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if (!complianceEnabled) return List<RoadAlert>.from(alerts);
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final jurisdiction = evaluateJurisdiction(userLat, userLng);
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switch (jurisdiction) {
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case AlertComplianceJurisdiction.prohibited:
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// Suppress stationary speed cameras and mobile speed enforcement in Germany & Switzerland
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return alerts.where((alert) {
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if (alert.category == RoadAlertCategory.speedCamera) return false;
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if (alert.category == RoadAlertCategory.police) {
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final desc = alert.description.toLowerCase();
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if (desc.contains('speed') || desc.contains('radar') || desc.contains('trap')) {
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return false;
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}
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}
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return true;
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}).toList();
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case AlertComplianceJurisdiction.frenchDangerZone:
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// Transform exact speed cameras into "Zone de Danger" corridor advisories
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return alerts.map((alert) {
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if (alert.category == RoadAlertCategory.speedCamera) {
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return alert.copyWith(
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category: RoadAlertCategory.hazard,
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description: 'Zone de Danger — Section Sécurité Routière',
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severity: RoadAlertSeverity.medium,
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);
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}
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return alert;
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}).toList();
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case AlertComplianceJurisdiction.standard:
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// United States standard: 100% full fidelity exact camera & mobile police alerts
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return List<RoadAlert>.from(alerts);
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}
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}
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}
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