// ── Thing models ──────────────────────────────────────────────────────────────

class NymeaThing {
  final String id;
  final String name;
  final String thingClassId;
  final String setupStatus;
  final List<Map<String, dynamic>> paramValues;
  final List<NymeaStateValue> states;

  const NymeaThing({
    required this.id,
    required this.name,
    required this.thingClassId,
    required this.setupStatus,
    required this.paramValues,
    this.states = const [],
  });

  factory NymeaThing.fromJson(Map<String, dynamic> j) {
    return NymeaThing(
      id: j['id'] as String? ?? '',
      name: j['name'] as String? ?? 'Unknown',
      thingClassId: j['thingClassId'] as String? ?? '',
      setupStatus: j['setupStatus'] as String? ?? '',
      paramValues: List<Map<String, dynamic>>.from(j['paramValues'] ?? []),
      states: (j['states'] as List? ?? [])
          .map((s) => NymeaStateValue.fromJson(s))
          .toList(),
    );
  }

  NymeaThing copyWith({String? name, List<NymeaStateValue>? states}) => NymeaThing(
        id: id,
        name: name ?? this.name,
        thingClassId: thingClassId,
        setupStatus: setupStatus,
        paramValues: paramValues,
        states: states ?? this.states,
      );

  dynamic settingValue(String settingTypeId) {
    try {
      return paramValues
          .firstWhere((p) => p['paramTypeId'] == settingTypeId)['value'];
    } catch (_) {
      return null;
    }
  }

  dynamic stateValue(String stateTypeId) {
    try {
      return states.firstWhere((s) => s.stateTypeId == stateTypeId).value;
    } catch (_) {
      return null;
    }
  }

  bool get isSetupComplete => setupStatus == 'ThingSetupStatusComplete';
}

class NymeaStateValue {
  final String stateTypeId;
  final dynamic value;

  const NymeaStateValue({required this.stateTypeId, required this.value});

  factory NymeaStateValue.fromJson(Map<String, dynamic> j) => NymeaStateValue(
        stateTypeId: j['stateTypeId'] as String? ?? '',
        value: j['value'],
      );
}

// ── Résultat d'une action nymea ───────────────────────────────────────────────
class NymeaActionResult {
  final bool success;
  final String thingError;        // "ThingErrorNoError" si OK
  final String? displayMessage;   // message humain optionnel du serveur

  const NymeaActionResult({
    required this.success,
    this.thingError = 'ThingErrorNoError',
    this.displayMessage,
  });

  /// Message d'erreur lisible. Vide si succès.
  String get errorText {
    if (success) return '';
    if (displayMessage != null && displayMessage!.isNotEmpty) return displayMessage!;
    const map = {
      'ThingErrorNoError': '',
      'ThingErrorNotFound': 'Appareil introuvable',
      'ThingErrorInvalidParameter': 'Paramètre invalide',
      'ThingErrorSetupFailed': 'Échec de configuration',
      'ThingErrorHardwareNotAvailable': 'Matériel indisponible',
      'ThingErrorActionTypeNotFound': 'Action introuvable',
      'ThingErrorStateTypeNotFound': 'État introuvable',
      'ThingErrorHardwareFailure': 'Panne matérielle',
      'ThingErrorTimeout': 'Délai dépassé',
    };
    return map[thingError] ?? thingError.replaceAll('ThingError', '');
  }
}

// ── State type definition (from GetThingClasses) ──────────────────────────────
class NymeaStateType {
  final String id;
  final String name;
  final String displayName;
  final String type;             // "Double", "Bool", "Int", "String"
  final String unit;             // "W", "V", "A", "Percentage", ""
  final dynamic defaultValue;
  final bool writable;
  final List<dynamic>? allowedValues;  // valeurs possibles pour les états enum
  final double? minValue;              // borne min pour Int/Double
  final double? maxValue;              // borne max pour Int/Double

  const NymeaStateType({
    required this.id,
    required this.name,
    required this.displayName,
    required this.type,
    required this.unit,
    this.defaultValue,
    this.writable = false,
    this.allowedValues,
    this.minValue,
    this.maxValue,
  });

  factory NymeaStateType.fromJson(Map<String, dynamic> j) => NymeaStateType(
        id: j['id'] as String? ?? '',
        name: j['name'] as String? ?? '',
        displayName: j['displayName'] as String? ?? j['name'] as String? ?? '',
        type: j['type'] as String? ?? 'String',
        unit: j['unit'] as String? ?? '',
        defaultValue: j['defaultValue'],
        writable: j['writable'] as bool? ?? false,
        allowedValues: (j['allowedValues'] as List?)?.toList()
            ?? (j['possibleValues'] as List?)?.toList(),
        minValue: (j['minValue'] as num?)?.toDouble(),
        maxValue: (j['maxValue'] as num?)?.toDouble(),
      );

  String formatValue(dynamic value) {
    if (value == null) return '—';
    switch (unit) {
      case 'W': return '${_fmt(value)} W';
      case 'kW': return '${_fmt(value)} kW';
      case 'Wh': return '${_fmt(value)} Wh';
      case 'kWh': return '${_fmt(value)} kWh';
      case 'V': return '${_fmt(value)} V';
      case 'A': return '${_fmt(value)} A';
      case 'Percentage': return '${_fmt(value)} %';
      case 'Celsius': return '${_fmt(value)} °C';
      case 'Hz': return '${_fmt(value)} Hz';
      case 'VoltAmpereReactive': return '${_fmt(value)} VAr';
      case 'KiloVoltAmpereHour': return '${_fmt(value)} kVAh';
      case 'Rpm': return '${_fmt(value)} rpm';
      default:
        if (type == 'Bool') return (value == true || value == 'true') ? 'Oui' : 'Non';
        return value.toString();
    }
  }

  String _fmt(dynamic value) {
    if (value is double) return value.toStringAsFixed(2);
    return value.toString();
  }
}

// ── Action type definition ─────────────────────────────────────────────────────
class NymeaActionType {
  final String id;
  final String name;
  final String displayName;
  final List<Map<String, dynamic>> paramTypes;

  const NymeaActionType({
    required this.id,
    required this.name,
    required this.displayName,
    this.paramTypes = const [],
  });

  factory NymeaActionType.fromJson(Map<String, dynamic> j) => NymeaActionType(
        id: j['id'] as String? ?? '',
        name: j['name'] as String? ?? '',
        displayName: j['displayName'] as String? ?? j['name'] as String? ?? '',
        paramTypes: List<Map<String, dynamic>>.from(j['paramTypes'] ?? []),
      );
}

class NymeaThingClass {
  final String id;
  final String name;
  final String displayName;
  final List<String> interfaces;           // ← clé pour la catégorisation
  final List<NymeaStateType> stateTypes;
  final List<NymeaActionType> actionTypes;
  final List<Map<String, dynamic>> paramTypes;
  final List<NymeaStateType> settingsTypes;

  const NymeaThingClass({
    required this.id,
    required this.name,
    required this.displayName,
    this.interfaces = const [],
    this.stateTypes = const [],
    this.actionTypes = const [],
    this.paramTypes = const [],
    this.settingsTypes = const [],
  });

  factory NymeaThingClass.fromJson(Map<String, dynamic> j) => NymeaThingClass(
        id: j['id'] as String? ?? '',
        name: j['name'] as String? ?? '',
        displayName: j['displayName'] as String? ?? '',
        interfaces: List<String>.from(j['interfaces'] ?? []),
        stateTypes: (j['stateTypes'] as List? ?? [])
            .map((s) => NymeaStateType.fromJson(s as Map<String, dynamic>))
            .toList(),
        actionTypes: (j['actionTypes'] as List? ?? [])
            .map((a) => NymeaActionType.fromJson(a as Map<String, dynamic>))
            .toList(),
        paramTypes: List<Map<String, dynamic>>.from(j['paramTypes'] ?? []),
        settingsTypes: (j['settingsTypes'] as List? ?? [])
            .map((s) => NymeaStateType.fromJson(s as Map<String, dynamic>))
            .toList(),
      );

  /// Retourne la stateType par son id
  NymeaStateType? stateTypeById(String id) {
    try { return stateTypes.firstWhere((s) => s.id == id); }
    catch (_) { return null; }
  }

  /// Retourne la stateType "principale" à afficher sur la card
  NymeaStateType? get primaryStateType {
    // Priorité : power → energy → temperature → connected → on/off → premier
    const priority = [
      'currentPower', 'power', 'totalEnergyConsumed', 'totalEnergyProduced',
      'temperature', 'batterylevel', 'soc', 'connected', 'on',
    ];
    for (final p in priority) {
      final found = stateTypes.where(
        (s) => s.name.toLowerCase() == p.toLowerCase()
      );
      if (found.isNotEmpty) return found.first;
    }
    return stateTypes.isNotEmpty ? stateTypes.first : null;
  }
}

// ── Favorite Widgets ──────────────────────────────────────────────────────────

enum FavoriteType {
  pvPower,
  homePower,
  batterySOC,
  gridPower,
  rates,
  evCharger,
  thingState,
  chart,
}

class FavoriteWidget {
  final String id;
  final FavoriteType type;
  final String title;
  final String? thingId;
  final String? stateTypeId;
  final Map<String, dynamic> extra;

  const FavoriteWidget({
    required this.id,
    required this.type,
    required this.title,
    this.thingId,
    this.stateTypeId,
    this.extra = const {},
  });

  factory FavoriteWidget.fromJson(Map<String, dynamic> j) => FavoriteWidget(
        id:          j['id'] as String,
        type:        FavoriteType.values.firstWhere(
                       (t) => t.name == j['type'],
                       orElse: () => FavoriteType.pvPower),
        title:       j['title'] as String,
        thingId:     j['thingId'] as String?,
        stateTypeId: j['stateTypeId'] as String?,
        extra:       Map<String, dynamic>.from(j['extra'] as Map? ?? {}),
      );

  Map<String, dynamic> toJson() => {
        'id':    id,
        'type':  type.name,
        'title': title,
        if (thingId     != null) 'thingId':     thingId,
        if (stateTypeId != null) 'stateTypeId': stateTypeId,
        if (extra.isNotEmpty)    'extra':        extra,
      };
}

// ── Historique d'un état ───────────────────────────────────────────────────────
class HistoryEntry {
  final DateTime timestamp;
  final double value;

  const HistoryEntry({required this.timestamp, required this.value});
}