import 'package:p_tits_pas/models/card_assets.dart';

/// Statut d'une instance de carte (file d'attention) — contrat #194 / #173.
enum CarteStatut {
  ouverte('ouverte'),
  refusee('refusee'),
  traitee('traitee');

  final String apiValue;
  const CarteStatut(this.apiValue);

  static CarteStatut fromApi(String? raw) {
    switch (raw) {
      case 'refusee':
        return CarteStatut.refusee;
      case 'traitee':
        return CarteStatut.traitee;
      case 'ouverte':
      default:
        return CarteStatut.ouverte;
    }
  }
}

/// Mode de réponse attendu selon le type SYSTEM.
enum CarteResponseMode {
  none('none'),
  ack('ack'),
  acceptRefuse('accept_refuse');

  final String apiValue;
  const CarteResponseMode(this.apiValue);

  static CarteResponseMode fromApi(String? raw) {
    switch (raw) {
      case 'ack':
        return CarteResponseMode.ack;
      case 'accept_refuse':
        return CarteResponseMode.acceptRefuse;
      case 'none':
      default:
        return CarteResponseMode.none;
    }
  }
}

/// Bulle / carte de la file d'attention.
class CarteBulle {
  final String id;
  final String typeCode;
  final String titre;
  final String? couleur;
  final String idPlacement;
  final String? idAbsence;
  final String operation;
  final CarteStatut statut;
  final Map<String, dynamic> payload;
  final DateTime? purgeAt;
  final String? creePar;
  final bool isCreator;
  final CarteResponseMode responseMode;
  final String? lastRefuseComment;
  final DateTime? creeLe;
  final DateTime? modifieLe;

  const CarteBulle({
    required this.id,
    required this.typeCode,
    required this.titre,
    this.couleur,
    required this.idPlacement,
    this.idAbsence,
    this.operation = 'create',
    required this.statut,
    this.payload = const {},
    this.purgeAt,
    this.creePar,
    this.isCreator = false,
    this.responseMode = CarteResponseMode.none,
    this.lastRefuseComment,
    this.creeLe,
    this.modifieLe,
  });

  String? get dateDebut => payload['date_debut']?.toString();
  String? get dateFin => payload['date_fin']?.toString();
  String? get motif => payload['motif']?.toString();

  /// Libellé UI (sémantique produit) — pas le titre brut API.
  String get titreAffiche {
    switch (typeCode) {
      case 'conge_am':
        return 'Demande de congés';
      case 'arret_maladie_am':
        return 'Arrêt maladie';
      case 'absence_enfant':
      case 'absence_enfant_modif':
        return 'Notification d’absence';
      default:
        return titre;
    }
  }

  /// Asset horizontal pastel (palette `assets/cards/` uniquement).
  String get backgroundAsset {
    final key = (couleur ?? '').trim().toLowerCase();
    switch (key) {
      case 'red':
        return CardColorHorizontal.red.path;
      case 'pink':
        return CardColorHorizontal.pink.path;
      case 'peach':
        return CardColorHorizontal.peach.path;
      case 'lime':
        return CardColorHorizontal.lime.path;
      case 'lavender':
        return CardColorHorizontal.lavender.path;
      case 'green':
        return CardColorHorizontal.green.path;
      case 'blue':
        return CardColorHorizontal.blue.path;
      default:
        return CardColorHorizontal.peach.path;
    }
  }

  /// Le destinataire peut répondre (pas le créateur, carte ouverte).
  bool get peutRepondre =>
      !isCreator &&
      statut == CarteStatut.ouverte &&
      responseMode != CarteResponseMode.none;

  factory CarteBulle.fromJson(Map<String, dynamic> json) {
    final rawPayload = json['payload'];
    return CarteBulle(
      id: (json['id'] ?? '').toString(),
      typeCode: (json['type_code'] ?? '').toString(),
      titre: (json['titre'] ?? json['type_code'] ?? 'Carte').toString(),
      couleur: json['couleur']?.toString(),
      idPlacement: (json['id_placement'] ?? '').toString(),
      idAbsence: json['id_absence']?.toString(),
      operation: (json['operation'] ?? 'create').toString(),
      statut: CarteStatut.fromApi(json['statut']?.toString()),
      payload: rawPayload is Map
          ? Map<String, dynamic>.from(rawPayload)
          : const {},
      purgeAt: _parseDate(json['purge_at']),
      creePar: json['cree_par']?.toString(),
      isCreator: json['is_creator'] == true,
      responseMode: CarteResponseMode.fromApi(json['response_mode']?.toString()),
      lastRefuseComment: json['last_refuse_comment']?.toString(),
      creeLe: _parseDate(json['cree_le']),
      modifieLe: _parseDate(json['modifie_le']),
    );
  }

  static DateTime? _parseDate(dynamic v) {
    if (v == null) return null;
    return DateTime.tryParse(v.toString());
  }
}