GitJournal/lib/widgets/note_search_delegate.dart

/*
 * SPDX-FileCopyrightText: 2019-2021 Vishesh Handa <me@vhanda.in>
 *
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

import 'package:flutter/material.dart';
import 'package:gitjournal/core/folder/notes_folder.dart';
import 'package:gitjournal/core/folder/virtual_notes_folder.dart';
import 'package:gitjournal/core/note.dart';
import 'package:gitjournal/folder_views/common.dart';
import 'package:gitjournal/folder_views/standard_view.dart';
import 'package:gitjournal/l10n.dart';
import 'package:provider/provider.dart';

class NoteSearchDelegate extends SearchDelegate<Note?> {
  final List<Note> notes;
  final FolderViewType viewType;

  NoteSearchDelegate(this.notes, this.viewType);

  @override
  List<Widget> buildActions(BuildContext context) {
    return [
      IconButton(
        icon: const Icon(Icons.close),
        onPressed: () {
          if (query.isEmpty) {
            close(context, null);
          } else {
            query = '';
          }
        },
      ),
    ];
  }

  @override
  Widget buildLeading(BuildContext context) {
    return IconButton(
      icon: const Icon(Icons.arrow_back),
      onPressed: () {
        close(context, null);
      },
    );
  }

  @override
  Widget buildResults(BuildContext context) {
    return buildView(context, query);
  }

  @override
  Widget buildSuggestions(BuildContext context) {
    return buildView(context, query);
  }

  Widget buildView(BuildContext context, String query) {
    var fv = _buildFolderView(context, query);

    return CustomScrollView(
      slivers: [fv],
    );
  }

  Widget _buildFolderView(BuildContext context, String query) {
    // TODO: This should be made far more efficient
    var q = query.toLowerCase();
    var filteredNotes = notes.where((note) {
      var title = note.title?.toLowerCase() ?? "";
      if (title.contains(q)) {
        return true;
      }
      if (note.fileName.toLowerCase().contains(q)) {
        return true;
      }
      return note.body.toLowerCase().contains(q);
    }).toList();

    var folderConfig = context.watch<NotesFolderConfig>();
    var folder = VirtualNotesFolder(filteredNotes, folderConfig);
    var emptyText = context.loc.widgetsFolderViewSearchFailed;

    return buildFolderView(
      viewType: viewType,
      folder: folder,
      emptyText: emptyText,
      header: StandardViewHeader.TitleOrFileName,
      showSummary: true,
      noteTapped: (Note note) => openNoteEditor(
        context,
        note,
        folder,
        highlightString: q,
      ),
      noteLongPressed: (Note note) {},
      isNoteSelected: (n) => false,
      searchTerm: query,
    );
  }
}