import 'package:equatable/equatable.dart';

class CustomerFileModel extends Equatable {
  final String? id;
  final String customerId; // Riferimento UUID
  final String name;
  final String storagePath;
  final String extension;
  final DateTime? createdAt;
  final int fileSize;

  const CustomerFileModel({
    this.id,
    required this.customerId,
    required this.name,
    required this.storagePath,
    required this.extension,
    this.createdAt,
    required this.fileSize,
  });

  // Trasforma i byte in qualcosa di leggibile (KB, MB, GB)
  String get sizeFormatted {
    if (fileSize <= 0) return "0 B";
    const suffixes = ["B", "KB", "MB", "GB", "TB"];
    var i = (fileSize.toString().length - 1) ~/ 3;
    if (i >= suffixes.length) i = suffixes.length - 1;
    double num = fileSize / (1 << (i * 10));
    return "${num.toStringAsFixed(i == 0 ? 0 : 1)} ${suffixes[i]}";
  }

  bool get isPdf => extension.toLowerCase().replaceAll('.', '') == 'pdf';

  CustomerFileModel copyWith({
    String? id,
    String? customerId,
    String? name,
    String? storagePath,
    String? extension,
    DateTime? createdAt,
    int? fileSize,
  }) {
    return CustomerFileModel(
      id: id ?? this.id,
      customerId: customerId ?? this.customerId,
      name: name ?? this.name,
      storagePath: storagePath ?? this.storagePath,
      extension: extension ?? this.extension,
      createdAt: createdAt ?? this.createdAt,
      fileSize: fileSize ?? this.fileSize,
    );
  }

  factory CustomerFileModel.fromMap(Map<String, dynamic> map) {
    return CustomerFileModel(
      id: map['id'] as String,
      customerId: map['customer_id'],
      name: map['name'],
      storagePath: map['storage_path'],
      extension: map['extension'] ?? '',
      createdAt: map['created_at'] != null
          ? DateTime.parse(map['created_at'])
          : null,
      fileSize: map['file_size'] is int
          ? map['file_size']
          : int.tryParse(map['file_size']?.toString() ?? '0') ?? 0,
    );
  }

  Map<String, dynamic> toMap() {
    return {
      if (id != null) 'id': id,
      'customer_id': customerId,
      'name': name,
      'storage_path': storagePath,
      'extension': extension,
      'file_size': fileSize,
    };
  }

  @override
  List<Object?> get props => [
    id,
    customerId,
    name,
    storagePath,
    extension,
    createdAt,
    fileSize,
  ];
}