import 'dart:convert';

import 'package:flutter/foundation.dart';

class Collection {
  final int id;
  final int ownerID;
  final String encryptedKey;
  final String keyDecryptionNonce;
  final String name;
  final CollectionType type;
  final String encryptedPath;
  final String pathDecryptionNonce;
  final int creationTime;
  final List<String> sharees;

  Collection(
    this.id,
    this.ownerID,
    this.encryptedKey,
    this.keyDecryptionNonce,
    this.name,
    this.type,
    this.encryptedPath,
    this.pathDecryptionNonce,
    this.creationTime,
    this.sharees,
  );

  static Collection emptyCollection() {
    return Collection(
        null, null, null, null, null, null, null, null, null, List<String>());
  }

  Collection copyWith({
    int id,
    int ownerID,
    String encryptedKey,
    String keyDecryptionNonce,
    String name,
    CollectionType type,
    String encryptedPath,
    String pathDecryptionNonce,
    int creationTime,
    List<String> sharees,
  }) {
    return Collection(
      id ?? this.id,
      ownerID ?? this.ownerID,
      encryptedKey ?? this.encryptedKey,
      keyDecryptionNonce ?? this.keyDecryptionNonce,
      name ?? this.name,
      type ?? this.type,
      encryptedPath ?? this.encryptedPath,
      encryptedPath ?? this.pathDecryptionNonce,
      creationTime ?? this.creationTime,
      sharees ?? this.sharees,
    );
  }

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'ownerID': ownerID,
      'encryptedKey': encryptedKey,
      'keyDecryptionNonce': keyDecryptionNonce,
      'name': name,
      'type': typeToString(type),
      'creationTime': creationTime,
      'encryptedPath': encryptedPath,
      'pathDecryptionNonce': pathDecryptionNonce,
      'sharees': sharees,
    };
  }

  factory Collection.fromMap(Map<String, dynamic> map) {
    if (map == null) return null;

    return Collection(
      map['id'],
      map['ownerID'],
      map['encryptedKey'],
      map['keyDecryptionNonce'],
      map['name'],
      typeFromString(map['type']),
      map['encryptedPath'],
      map['pathDecryptionNonce'],
      map['creationTime'],
      map['sharees'] == null ? null : List<String>.from(map['sharees']),
    );
  }

  String toJson() => json.encode(toMap());

  factory Collection.fromJson(String source) =>
      Collection.fromMap(json.decode(source));

  @override
  String toString() {
    return 'Collection(id: $id, ownerID: $ownerID, encryptedKey: $encryptedKey, keyDecryptionNonce: $keyDecryptionNonce, name: $name, type: $type, encryptedPath: $encryptedPath, pathDecryptionNonce: $pathDecryptionNonce, creationTime: $creationTime, sharees: $sharees)';
  }

  @override
  bool operator ==(Object o) {
    if (identical(this, o)) return true;

    return o is Collection &&
        o.id == id &&
        o.ownerID == ownerID &&
        o.encryptedKey == encryptedKey &&
        o.keyDecryptionNonce == keyDecryptionNonce &&
        o.name == name &&
        o.type == type &&
        o.encryptedPath == encryptedPath &&
        o.pathDecryptionNonce == pathDecryptionNonce &&
        o.creationTime == creationTime &&
        listEquals(o.sharees, sharees);
  }

  @override
  int get hashCode {
    return id.hashCode ^
        ownerID.hashCode ^
        encryptedKey.hashCode ^
        keyDecryptionNonce.hashCode ^
        name.hashCode ^
        type.hashCode ^
        encryptedPath.hashCode ^
        pathDecryptionNonce.hashCode ^
        creationTime.hashCode ^
        sharees.hashCode;
  }
}

CollectionType typeFromString(String type) {
  switch (type) {
    case "folder":
      return CollectionType.folder;
    case "favorites":
      return CollectionType.favorites;
  }
  return CollectionType.album;
}

String typeToString(CollectionType type) {
  switch (type) {
    case CollectionType.folder:
      return "folder";
    case CollectionType.favorites:
      return "favorites";
    default:
      return "album";
  }
}

enum CollectionType {
  folder,
  favorites,
  album,
}