import 'package:uuid/uuid.dart';
import 'ServiceConfig.dart';

/// A unique server the user connects to. Holds the connection details plus a
/// list of deployable [ServiceConfig]s that live on it.
///
/// The [password] is NOT serialized into the plain config JSON — it is held in
/// memory and persisted separately via encrypted secure storage.
class ServerProfile {
  final String id;
  String name; // friendly label, e.g. "prod-1"
  String host;
  int port;
  String username;
  String password; // runtime only; persisted via SecretStore
  bool useSudo;
  List<ServiceConfig> services;

  /// Saved deployment order: service ids in the order the user arranged them
  /// for batch build & deploy. Ids not present are appended in natural order.
  List<String> deployOrder;

  ServerProfile({
    String? id,
    this.name = 'New server',
    this.host = '',
    this.port = 22,
    this.username = '',
    this.password = '',
    this.useSudo = true,
    List<ServiceConfig>? services,
    List<String>? deployOrder,
  }) : id = id ?? const Uuid().v4(),
       services = services ?? [],
       deployOrder = deployOrder ?? [];

  /// Services arranged by the saved [deployOrder], with any not-listed ones
  /// appended in their natural order.
  List<ServiceConfig> get orderedServices {
    final byId = {for (final s in services) s.id: s};
    final result = <ServiceConfig>[];
    for (final id in deployOrder) {
      final s = byId.remove(id);
      if (s != null) result.add(s);
    }
    // Preserve original order for the remaining (new/unordered) services.
    for (final s in services) {
      if (byId.containsKey(s.id)) result.add(s);
    }
    return result;
  }

  ServerProfile copy() {
    final c = ServerProfile.fromJson(toJson());
    c.password = password;
    return c;
  }

  /// JSON WITHOUT the password (that goes to secure storage).
  Map<String, dynamic> toJson() => {
    'id': id,
    'name': name,
    'host': host,
    'port': port,
    'username': username,
    'useSudo': useSudo,
    'services': services.map((s) => s.toJson()).toList(),
    'deployOrder': deployOrder,
  };

  factory ServerProfile.fromJson(Map<String, dynamic> j) => ServerProfile(
    id: j['id'] as String?,
    name: (j['name'] ?? 'server') as String,
    host: (j['host'] ?? '') as String,
    port: (j['port'] ?? 22) as int,
    username: (j['username'] ?? '') as String,
    useSudo: (j['useSudo'] ?? true) as bool,
    services: ((j['services'] ?? []) as List<dynamic>)
        .map((e) => ServiceConfig.fromJson(e as Map<String, dynamic>))
        .toList(),
    deployOrder: ((j['deployOrder'] ?? []) as List<dynamic>)
        .map((e) => e.toString())
        .toList(),
  );
}