import 'package:selfprivacy/logic/models/disk_size.dart';
import 'package:selfprivacy/logic/models/hive/server_details.dart';
import 'package:selfprivacy/logic/models/json/server_disk_volume.dart';

class DiskVolume {
  DiskVolume({
    this.name = '',
    this.sizeTotal = const DiskSize(byte: 0),
    this.sizeUsed = const DiskSize(byte: 0),
    this.root = false,
    this.isResizable = false,
    this.serverDiskVolume,
    this.providerVolume,
  });

  DiskVolume.fromServerDiscVolume(
    final ServerDiskVolume volume,
    final ServerVolume? providerVolume,
  ) : this(
          name: volume.name,
          sizeTotal: DiskSize(
            byte:
                volume.totalSpace == 'None' ? 0 : int.parse(volume.totalSpace),
          ),
          sizeUsed: DiskSize(
            byte: volume.usedSpace == 'None' ? 0 : int.parse(volume.usedSpace),
          ),
          root: volume.root,
          isResizable: providerVolume != null,
          serverDiskVolume: volume,
          providerVolume: providerVolume,
        );

  /// Get the display name of the volume
  ///
  /// If it is sda1 and root the name is "System disk"
  /// If there is a mapping to providerVolume, the name is "Expandable volume"
  /// Otherwise the name is the name of the volume
  String get displayName {
    if (root) {
      return 'System disk';
    } else if (providerVolume != null) {
      return 'Expandable volume';
    } else {
      return name;
    }
  }

  DiskSize sizeUsed;
  DiskSize sizeTotal;
  String name;
  bool root;
  bool isResizable;
  ServerDiskVolume? serverDiskVolume;
  ServerVolume? providerVolume;

  /// from 0.0 to 1.0
  double get percentage =>
      sizeTotal.byte == 0 ? 0 : sizeUsed.byte / sizeTotal.byte;
  bool get isDiskOkay =>
      percentage < 0.8 && sizeTotal.gibibyte - sizeUsed.gibibyte > 2.0;
}

class DiskStatus {
  DiskStatus.fromVolumes(
    final List<ServerDiskVolume> serverVolumes,
    final List<ServerVolume> providerVolumes,
  ) {
    diskVolumes = serverVolumes.map((
      final ServerDiskVolume volume,
    ) {
      ServerVolume? providerVolume;

      for (final ServerVolume iterableProviderVolume in providerVolumes) {
        if (iterableProviderVolume.linuxDevice == null ||
            volume.model == null ||
            volume.serial == null) {
          continue;
        }

        final String deviceId =
            iterableProviderVolume.linuxDevice!.split('/').last;
        if (deviceId.contains(volume.model!) &&
            deviceId.contains(volume.serial!)) {
          providerVolume = iterableProviderVolume;
          break;
        }
      }

      final DiskVolume diskVolume =
          DiskVolume.fromServerDiscVolume(volume, providerVolume);

      return diskVolume;
    }).toList();
  }
  DiskStatus() {
    diskVolumes = [];
  }

  bool get isDiskOkay => diskVolumes.every((final volume) => volume.isDiskOkay);

  List<DiskVolume> diskVolumes = [];
}