import 'dart:convert';
import 'dart:core';

import 'package:photos/models/magic_metadata.dart';

class Collection {
  final int id;
  final User? owner;
  final String encryptedKey;
  final String? keyDecryptionNonce;
  final String? name;
  final String encryptedName;
  final String nameDecryptionNonce;
  final CollectionType type;
  final CollectionAttributes? attributes;
  final List<User?>? sharees;
  final List<PublicURL?>? publicURLs;
  final int updationTime;
  final bool isDeleted;
  String? mMdEncodedJson;
  int mMdVersion = 0;
  CollectionMagicMetadata? _mmd;

  CollectionMagicMetadata get magicMetadata =>
      _mmd ?? CollectionMagicMetadata.fromEncodedJson(mMdEncodedJson ?? '{}');

  set magicMetadata(val) => _mmd = val;

  Collection(
    this.id,
    this.owner,
    this.encryptedKey,
    this.keyDecryptionNonce,
    this.name,
    this.encryptedName,
    this.nameDecryptionNonce,
    this.type,
    this.attributes,
    this.sharees,
    this.publicURLs,
    this.updationTime, {
    this.isDeleted = false,
  });

  bool isArchived() {
    return mMdVersion > 0 && magicMetadata.visibility == visibilityArchive;
  }

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

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

  Collection copyWith({
    int? id,
    User? owner,
    String? encryptedKey,
    String? keyDecryptionNonce,
    String? name,
    String? encryptedName,
    String? nameDecryptionNonce,
    CollectionType? type,
    CollectionAttributes? attributes,
    List<User>? sharees,
    List<PublicURL>? publicURLs,
    int? updationTime,
    bool? isDeleted,
    String? mMdEncodedJson,
    int? mMdVersion,
  }) {
    final Collection result = Collection(
      id ?? this.id,
      owner ?? this.owner,
      encryptedKey ?? this.encryptedKey,
      keyDecryptionNonce ?? this.keyDecryptionNonce,
      name ?? this.name,
      encryptedName ?? this.encryptedName,
      nameDecryptionNonce ?? this.nameDecryptionNonce,
      type ?? this.type,
      attributes ?? this.attributes,
      sharees ?? this.sharees,
      publicURLs ?? this.publicURLs,
      updationTime ?? this.updationTime,
      isDeleted: isDeleted ?? this.isDeleted,
    );
    result.mMdVersion = mMdVersion ?? this.mMdVersion;
    result.mMdEncodedJson = mMdEncodedJson ?? this.mMdEncodedJson;
    return result;
  }

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'owner': owner?.toMap(),
      'encryptedKey': encryptedKey,
      'keyDecryptionNonce': keyDecryptionNonce,
      'name': name,
      'encryptedName': encryptedName,
      'nameDecryptionNonce': nameDecryptionNonce,
      'type': typeToString(type),
      'attributes': attributes?.toMap(),
      'sharees': sharees?.map((x) => x?.toMap()).toList(),
      'publicURLs': publicURLs?.map((x) => x?.toMap()).toList(),
      'updationTime': updationTime,
      'isDeleted': isDeleted,
    };
  }

  factory Collection.fromMap(Map<String, dynamic>? map) {
    if (map == null) {
      throw Exception('Argument is null');
    }
    final sharees = (map['sharees'] == null || map['sharees'].length == 0)
        ? <User>[]
        : List<User>.from(map['sharees'].map((x) => User.fromMap(x)));
    final publicURLs =
        (map['publicURLs'] == null || map['publicURLs'].length == 0)
            ? <PublicURL>[]
            : List<PublicURL>.from(
                map['publicURLs'].map((x) => PublicURL.fromMap(x)),
              );
    return Collection(
      map['id'],
      User.fromMap(map['owner']),
      map['encryptedKey'],
      map['keyDecryptionNonce'],
      map['name'],
      map['encryptedName'],
      map['nameDecryptionNonce'],
      typeFromString(map['type']),
      CollectionAttributes.fromMap(map['attributes']),
      sharees,
      publicURLs,
      map['updationTime'],
      isDeleted: map['isDeleted'] ?? false,
    );
  }
}

enum CollectionType {
  folder,
  favorites,
  album,
}

class CollectionAttributes {
  final String? encryptedPath;
  final String? pathDecryptionNonce;
  final int? version;

  CollectionAttributes({
    this.encryptedPath,
    this.pathDecryptionNonce,
    this.version,
  });

  Map<String, dynamic> toMap() {
    final map = <String, dynamic>{};
    if (encryptedPath != null) {
      map['encryptedPath'] = encryptedPath;
    }
    if (pathDecryptionNonce != null) {
      map['pathDecryptionNonce'] = pathDecryptionNonce;
    }
    map['version'] = version ?? 0;
    return map;
  }

  factory CollectionAttributes.fromMap(Map<String, dynamic>? map) {
    if (map == null) {
      throw Exception('Argument is null');
    }

    return CollectionAttributes(
      encryptedPath: map['encryptedPath'],
      pathDecryptionNonce: map['pathDecryptionNonce'],
      version: map['version'] ?? 0,
    );
  }
}

class User {
  int? id;
  String email;
  String? name;

  User({
    this.id,
    required this.email,
    this.name,
  });

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'email': email,
      'name': name,
    };
  }

  factory User.fromMap(Map<String, dynamic>? map) {
    if (map == null) {
      throw Exception('Argument is null');
    }

    return User(
      id: map['id'],
      email: map['email'],
      name: map['name'],
    );
  }

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

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

class PublicURL {
  String url;
  int deviceLimit;
  int validTill;
  bool enableDownload;
  bool passwordEnabled;

  PublicURL({
    required this.url,
    required this.deviceLimit,
    required this.validTill,
    this.enableDownload = true,
    this.passwordEnabled = false,
  });

  Map<String, dynamic> toMap() {
    return {
      'url': url,
      'deviceLimit': deviceLimit,
      'validTill': validTill,
      'enableDownload': enableDownload,
      'passwordEnabled': passwordEnabled,
    };
  }

  factory PublicURL.fromMap(Map<String, dynamic>? map) {
    if (map == null) {
      throw Exception('Argument is null');
    }

    return PublicURL(
      url: map['url'],
      deviceLimit: map['deviceLimit'],
      validTill: map['validTill'] ?? 0,
      enableDownload: map['enableDownload'] ?? true,
      passwordEnabled: map['passwordEnabled'] ?? false,
    );
  }
}