import 'package:flutter/widgets.dart';
import 'package:immich_mobile/constants/enums.dart';
import 'package:immich_mobile/domain/models/album/album.model.dart';
import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/advanced_info_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/archive_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/delete_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/delete_local_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/delete_permanent_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/download_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/edit_image_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/like_activity_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/move_to_lock_folder_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/remove_from_album_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/remove_from_lock_folder_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/share_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/share_link_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/similar_photos_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/trash_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/unarchive_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/unstack_action_button.widget.dart';
import 'package:immich_mobile/presentation/widgets/action_buttons/upload_action_button.widget.dart';

class ActionButtonContext {
  final BaseAsset asset;
  final bool isOwner;
  final bool isArchived;
  final bool isTrashEnabled;
  final bool isInLockedView;
  final bool isStacked;
  final RemoteAlbum? currentAlbum;
  final bool advancedTroubleshooting;
  final ActionSource source;

  const ActionButtonContext({
    required this.asset,
    required this.isOwner,
    required this.isArchived,
    required this.isTrashEnabled,
    required this.isStacked,
    required this.isInLockedView,
    required this.currentAlbum,
    required this.advancedTroubleshooting,
    required this.source,
  });
}

enum ActionButtonType {
  advancedInfo,
  share,
  edit,
  shareLink,
  similarPhotos,
  archive,
  unarchive,
  download,
  trash,
  deletePermanent,
  delete,
  moveToLockFolder,
  removeFromLockFolder,
  deleteLocal,
  upload,
  removeFromAlbum,
  unstack,
  likeActivity;

  bool shouldShow(ActionButtonContext context) {
    return switch (this) {
      ActionButtonType.advancedInfo => context.advancedTroubleshooting,
      ActionButtonType.share => true,
      ActionButtonType.edit =>
        !context.isInLockedView && //
            context.asset.isImage,
      ActionButtonType.shareLink =>
        !context.isInLockedView && //
            context.asset.hasRemote,
      ActionButtonType.archive =>
        context.isOwner && //
            !context.isInLockedView && //
            context.asset.hasRemote && //
            !context.isArchived,
      ActionButtonType.unarchive =>
        context.isOwner && //
            !context.isInLockedView && //
            context.asset.hasRemote && //
            context.isArchived,
      ActionButtonType.download =>
        !context.isInLockedView && //
            context.asset.hasRemote && //
            !context.asset.hasLocal,
      ActionButtonType.trash =>
        context.isOwner && //
            !context.isInLockedView && //
            context.asset.hasRemote && //
            context.isTrashEnabled,
      ActionButtonType.deletePermanent =>
        context.isOwner && //
                context.asset.hasRemote && //
                !context.isTrashEnabled ||
            context.isInLockedView,
      ActionButtonType.delete =>
        context.isOwner && //
            !context.isInLockedView && //
            context.asset.hasRemote,
      ActionButtonType.moveToLockFolder =>
        context.isOwner && //
            !context.isInLockedView && //
            context.asset.hasRemote,
      ActionButtonType.removeFromLockFolder =>
        context.isOwner && //
            context.isInLockedView && //
            context.asset.hasRemote,
      ActionButtonType.deleteLocal =>
        !context.isInLockedView && //
            context.asset.hasLocal,
      ActionButtonType.upload =>
        !context.isInLockedView && //
            context.asset.storage == AssetState.local,
      ActionButtonType.removeFromAlbum =>
        context.isOwner && //
            !context.isInLockedView && //
            context.currentAlbum != null,
      ActionButtonType.unstack =>
        context.isOwner && //
            !context.isInLockedView && //
            context.isStacked,
      ActionButtonType.likeActivity =>
        !context.isInLockedView &&
            context.currentAlbum != null &&
            context.currentAlbum!.isActivityEnabled &&
            context.currentAlbum!.isShared,
      ActionButtonType.similarPhotos =>
        !context.isInLockedView && //
            context.asset is RemoteAsset,
    };
  }

  Widget buildButton(ActionButtonContext context) {
    return switch (this) {
      ActionButtonType.advancedInfo => AdvancedInfoActionButton(source: context.source),
      ActionButtonType.share => ShareActionButton(source: context.source),
      ActionButtonType.edit => const EditImageActionButton(),
      ActionButtonType.shareLink => ShareLinkActionButton(source: context.source),
      ActionButtonType.archive => ArchiveActionButton(source: context.source),
      ActionButtonType.unarchive => UnArchiveActionButton(source: context.source),
      ActionButtonType.download => DownloadActionButton(source: context.source),
      ActionButtonType.trash => TrashActionButton(source: context.source),
      ActionButtonType.deletePermanent => DeletePermanentActionButton(source: context.source),
      ActionButtonType.delete => DeleteActionButton(source: context.source),
      ActionButtonType.moveToLockFolder => MoveToLockFolderActionButton(source: context.source),
      ActionButtonType.removeFromLockFolder => RemoveFromLockFolderActionButton(source: context.source),
      ActionButtonType.deleteLocal => DeleteLocalActionButton(source: context.source),
      ActionButtonType.upload => UploadActionButton(source: context.source),
      ActionButtonType.removeFromAlbum => RemoveFromAlbumActionButton(
        albumId: context.currentAlbum!.id,
        source: context.source,
      ),
      ActionButtonType.likeActivity => const LikeActivityActionButton(),
      ActionButtonType.unstack => UnStackActionButton(source: context.source),
      ActionButtonType.similarPhotos => SimilarPhotosActionButton(assetId: (context.asset as RemoteAsset).id),
    };
  }
}

class ActionButtonBuilder {
  static const List<ActionButtonType> _actionTypes = ActionButtonType.values;

  static const int defaultQuickActionLimit = 4;
  static const String quickActionStorageDelimiter = ',';

  static const List<ActionButtonType> _defaultQuickActionSeed = [
    ActionButtonType.share,
    ActionButtonType.upload,
    ActionButtonType.edit,
    ActionButtonType.archive,
    ActionButtonType.delete,
    ActionButtonType.removeFromAlbum,
    ActionButtonType.likeActivity,
  ];

  static final Set<ActionButtonType> _quickActionSet = Set<ActionButtonType>.unmodifiable(_defaultQuickActionSeed);

  static final List<ActionButtonType> defaultQuickActionOrder = List<ActionButtonType>.unmodifiable(
    _defaultQuickActionSeed,
  );

  static final String defaultQuickActionOrderStorageValue = defaultQuickActionOrder
      .map((type) => type.name)
      .join(quickActionStorageDelimiter);

  static List<ActionButtonType> get quickActionOptions => defaultQuickActionOrder;

  static List<ActionButtonType> parseQuickActionOrder(String? stored) {
    final parsed = <ActionButtonType>[];

    if (stored != null && stored.trim().isNotEmpty) {
      for (final name in stored.split(quickActionStorageDelimiter)) {
        final type = _typeByName(name.trim());
        if (type != null) {
          parsed.add(type);
        }
      }
    }

    return normalizeQuickActionOrder(parsed);
  }

  static String encodeQuickActionOrder(List<ActionButtonType> order) {
    final unique = <ActionButtonType>{};
    final buffer = <String>[];

    for (final type in order) {
      if (unique.add(type)) {
        buffer.add(type.name);
      }
    }

    final result = buffer.join(quickActionStorageDelimiter);
    return result;
  }

  static List<ActionButtonType> buildQuickActionTypes(
    ActionButtonContext context, {
    List<ActionButtonType>? quickActionOrder,
    int limit = defaultQuickActionLimit,
  }) {
    final normalized = normalizeQuickActionOrder(
      quickActionOrder == null || quickActionOrder.isEmpty ? defaultQuickActionOrder : quickActionOrder,
    );

    final seen = <ActionButtonType>{};
    final result = <ActionButtonType>[];

    for (final type in normalized) {
      if (!_quickActionSet.contains(type)) {
        continue;
      }

      final resolved = _resolveQuickActionType(type, context);
      if (!seen.add(resolved) || !resolved.shouldShow(context)) {
        continue;
      }

      result.add(resolved);
      if (result.length >= limit) {
        break;
      }
    }

    return result;
  }

  static List<Widget> buildQuickActions(
    ActionButtonContext context, {
    List<ActionButtonType>? quickActionOrder,
    int limit = defaultQuickActionLimit,
  }) {
    final types = buildQuickActionTypes(context, quickActionOrder: quickActionOrder, limit: limit);
    return types.map((type) => type.buildButton(context)).toList();
  }

  static ActionButtonType? _typeByName(String name) {
    if (name.isEmpty) {
      return null;
    }

    for (final type in ActionButtonType.values) {
      if (type.name == name) {
        return type;
      }
    }

    return null;
  }

  static List<Widget> build(ActionButtonContext context) {
    return _actionTypes.where((type) => type.shouldShow(context)).map((type) => type.buildButton(context)).toList();
  }

  static List<ActionButtonType> normalizeQuickActionOrder(List<ActionButtonType> order) {
    final ordered = <ActionButtonType>{};

    for (final type in order) {
      if (_quickActionSet.contains(type)) {
        ordered.add(type);
      }
    }

    ordered.addAll(_defaultQuickActionSeed);

    return ordered.toList(growable: false);
  }

  static ActionButtonType _resolveQuickActionType(ActionButtonType type, ActionButtonContext context) {
    if (type == ActionButtonType.archive && context.isArchived) {
      return ActionButtonType.unarchive;
    }

    if (type == ActionButtonType.delete && context.asset.isLocalOnly) {
      return ActionButtonType.deleteLocal;
    }

    return type;
  }

  static bool isSupportedQuickAction(ActionButtonType type) => _quickActionSet.contains(type);
}