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Hamza-Ayed
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import 'gps_coordinate.dart';
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import 'workout_segment.dart';
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/// حالات المزامنة
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enum SyncStatus { pending, synced, failed }
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/// أنواع التمارين
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enum WorkoutType { running, walking }
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/// نموذج بيانات التمرين الكامل
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/// يحتوي على كل المعلومات المتعلقة بجلسة تمرين واحدة
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class Workout {
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final String id;
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WorkoutType workoutType;
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DateTime? startTime;
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DateTime? endTime;
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double distanceMeters;
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int durationSeconds;
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double elevationGain;
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double elevationLoss;
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double calories;
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double avgSpeedMps;
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double maxSpeedMps;
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double avgPaceMinKm;
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String? routePolyline;
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double? startLat;
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double? startLng;
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double? endLat;
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double? endLng;
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String? weather;
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double? temperature;
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String notes;
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SyncStatus syncStatus;
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DateTime? syncedAt;
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DateTime createdAt;
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// In-memory only (not persisted directly)
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List<GpsCoordinate> coordinates;
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List<WorkoutSegment> segments;
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// Tracking state (in-memory only)
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bool isPaused;
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int totalPausedDurationMs;
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DateTime? _pauseStartTime;
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Workout({
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required this.id,
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this.workoutType = WorkoutType.running,
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this.startTime,
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this.endTime,
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this.distanceMeters = 0,
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this.durationSeconds = 0,
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this.elevationGain = 0,
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this.elevationLoss = 0,
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this.calories = 0,
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this.avgSpeedMps = 0,
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this.maxSpeedMps = 0,
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this.avgPaceMinKm = 0,
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this.routePolyline,
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this.startLat,
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this.startLng,
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this.endLat,
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this.endLng,
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this.weather,
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this.temperature,
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this.notes = '',
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this.syncStatus = SyncStatus.pending,
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this.syncedAt,
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DateTime? createdAt,
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List<GpsCoordinate>? coordinates,
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List<WorkoutSegment>? segments,
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this.isPaused = false,
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this.totalPausedDurationMs = 0,
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}) : createdAt = createdAt ?? DateTime.now(),
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coordinates = coordinates ?? [],
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segments = segments ?? [];
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// ─── Tracking Lifecycle ──────────────────────────────────────────
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void start() {
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startTime = DateTime.now();
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isPaused = false;
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totalPausedDurationMs = 0;
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_pauseStartTime = null;
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}
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void pause() {
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if (!isPaused) {
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isPaused = true;
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_pauseStartTime = DateTime.now();
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}
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}
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void resume() {
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if (isPaused && _pauseStartTime != null) {
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totalPausedDurationMs +=
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DateTime.now().difference(_pauseStartTime!).inMilliseconds;
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isPaused = false;
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_pauseStartTime = null;
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}
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}
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void stop() {
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if (isPaused) resume(); // Account for final pause
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endTime = DateTime.now();
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isPaused = false;
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_calculateFinalStats();
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}
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/// Calculate active duration excluding pauses
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int get activeDurationSeconds {
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if (startTime == null) return 0;
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final end = endTime ?? DateTime.now();
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int total = end.difference(startTime!).inSeconds;
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int paused = totalPausedDurationMs ~/ 1000;
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return (total - paused).clamp(0, total);
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}
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// ─── Stats Calculation ───────────────────────────────────────────
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void _calculateFinalStats() {
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durationSeconds = activeDurationSeconds;
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if (durationSeconds > 0 && distanceMeters > 0) {
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avgSpeedMps = distanceMeters / durationSeconds;
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// Pace in min/km
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double kmPerHour = avgSpeedMps * 3.6;
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if (kmPerHour > 0) {
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avgPaceMinKm = 60.0 / kmPerHour;
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}
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}
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// Calories estimation (MET-based for 70kg person)
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calories = _estimateCalories();
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// Elevation from coordinates
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_calculateElevation();
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}
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double _estimateCalories() {
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// MET values: Running ~10, Walking ~3.8
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double met = workoutType == WorkoutType.running ? 10.0 : 3.8;
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double weightKg = 70.0; // Default weight
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double hours = durationSeconds / 3600.0;
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return met * weightKg * hours;
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}
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void _calculateElevation() {
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if (coordinates.length < 2) return;
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double gain = 0;
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double loss = 0;
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for (int i = 1; i < coordinates.length; i++) {
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final prevAlt = coordinates[i - 1].altitude;
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final currAlt = coordinates[i].altitude;
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if (prevAlt != null && currAlt != null) {
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double diff = currAlt - prevAlt;
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// Filter noise: ignore changes < 1m
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if (diff > 1.0) {
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gain += diff;
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} else if (diff < -1.0) {
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loss += diff.abs();
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}
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}
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}
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elevationGain = gain;
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elevationLoss = loss;
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}
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// ─── Serialization ──────────────────────────────────────────────
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Map<String, dynamic> toMap() {
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return {
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'id': id,
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'workout_type': workoutType.name,
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'start_time': startTime?.toIso8601String(),
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'end_time': endTime?.toIso8601String(),
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'distance_meters': distanceMeters,
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'duration_seconds': durationSeconds,
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'elevation_gain': elevationGain,
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'elevation_loss': elevationLoss,
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'calories': calories,
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'avg_speed_mps': avgSpeedMps,
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'max_speed_mps': maxSpeedMps,
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'avg_pace_min_km': avgPaceMinKm,
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'route_polyline': routePolyline,
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'start_lat': startLat,
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'start_lng': startLng,
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'end_lat': endLat,
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'end_lng': endLng,
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'weather': weather,
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'temperature': temperature,
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'notes': notes,
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'sync_status': syncStatus.name,
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'synced_at': syncedAt?.toIso8601String(),
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'created_at': createdAt.toIso8601String(),
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};
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}
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factory Workout.fromMap(Map<String, dynamic> map) {
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return Workout(
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id: map['id'] as String,
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workoutType: WorkoutType.values.firstWhere(
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(e) => e.name == map['workout_type'],
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orElse: () => WorkoutType.running,
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),
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startTime: map['start_time'] != null
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? DateTime.parse(map['start_time'] as String)
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: null,
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endTime: map['end_time'] != null
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? DateTime.parse(map['end_time'] as String)
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: null,
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distanceMeters: (map['distance_meters'] as num?)?.toDouble() ?? 0,
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durationSeconds: (map['duration_seconds'] as num?)?.toInt() ?? 0,
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elevationGain: (map['elevation_gain'] as num?)?.toDouble() ?? 0,
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elevationLoss: (map['elevation_loss'] as num?)?.toDouble() ?? 0,
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calories: (map['calories'] as num?)?.toDouble() ?? 0,
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avgSpeedMps: (map['avg_speed_mps'] as num?)?.toDouble() ?? 0,
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maxSpeedMps: (map['max_speed_mps'] as num?)?.toDouble() ?? 0,
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avgPaceMinKm: (map['avg_pace_min_km'] as num?)?.toDouble() ?? 0,
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routePolyline: map['route_polyline'] as String?,
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startLat: (map['start_lat'] as num?)?.toDouble(),
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startLng: (map['start_lng'] as num?)?.toDouble(),
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endLat: (map['end_lat'] as num?)?.toDouble(),
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endLng: (map['end_lng'] as num?)?.toDouble(),
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weather: map['weather'] as String?,
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temperature: (map['temperature'] as num?)?.toDouble(),
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notes: map['notes'] as String? ?? '',
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syncStatus: SyncStatus.values.firstWhere(
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(e) => e.name == map['sync_status'],
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orElse: () => SyncStatus.pending,
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),
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syncedAt: map['synced_at'] != null
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? DateTime.parse(map['synced_at'] as String)
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: null,
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createdAt: map['created_at'] != null
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? DateTime.parse(map['created_at'] as String)
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: DateTime.now(),
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);
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}
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/// Convert to API payload for server submission
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Map<String, dynamic> toApiPayload() {
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return {
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'workout_type': workoutType.name,
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'distance_meters': distanceMeters.toInt(),
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'duration_seconds': durationSeconds,
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'elevation_gain_meters': elevationGain.toInt(),
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'elevation_loss_meters': elevationLoss.toInt(),
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'calories_burned': calories,
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'max_speed_mps': maxSpeedMps,
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'route_polyline': routePolyline ?? '',
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'start_time': startTime?.toUtc().toIso8601String() ?? '',
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'end_time': endTime?.toUtc().toIso8601String() ?? '',
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'weather_condition': weather ?? '',
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'temperature_celsius': temperature ?? 0,
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'notes': notes,
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'is_public': false,
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'segments': segments.map((s) => s.toApiMap()).toList(),
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};
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}
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}
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