115 lines
3.5 KiB
Dart
115 lines
3.5 KiB
Dart
import 'package:flutter/widgets.dart';
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import 'package:frosty/apis/twitch_api.dart';
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import 'package:frosty/models/category.dart';
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import 'package:frosty/models/channel.dart';
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import 'package:frosty/screens/settings/stores/auth_store.dart';
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import 'package:mobx/mobx.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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part 'search_store.g.dart';
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class SearchStore = SearchStoreBase with _$SearchStore;
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abstract class SearchStoreBase with Store {
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final AuthStore authStore;
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final TwitchApi twitchApi;
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final textEditingController = TextEditingController();
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final textFieldFocusNode = FocusNode();
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@readonly
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var _searchText = '';
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@readonly
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var _searchHistory = ObservableList<String>();
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@readonly
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ObservableFuture<List<ChannelQuery>>? _channelFuture;
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@readonly
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ObservableFuture<CategoriesTwitch?>? _categoryFuture;
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SearchStoreBase({required this.authStore, required this.twitchApi}) {
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init();
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}
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@action
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Future<void> init() async {
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// Retrieve the instance that will allow us to retrieve local search history.
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final prefs = await SharedPreferences.getInstance();
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// Retrieve the search history from local storage. If it doesn't exist, use an empty list.
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_searchHistory = prefs.getStringList('search_history')?.asObservable() ??
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ObservableList<String>();
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// Create a reaction that will limit the history to 8 entries and update it to local storage automatically.
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autorun((_) {
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if (_searchHistory.length > 8) _searchHistory.removeLast();
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prefs.setStringList('search_history', _searchHistory);
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});
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// Add a listener to update the cancel button visibility whenever the text changes.
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textEditingController
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.addListener(() => _searchText = textEditingController.text);
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}
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/// Obtain the channels and categories that match the provided [query].
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@action
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void handleQuery(String query) {
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if (query.isEmpty) return;
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// Move the query to the most recent result (top of the stack).
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_searchHistory.remove(query);
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_searchHistory.insert(0, query);
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// Fetch the matching channels, sort it by live status, and then set it.
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_channelFuture = twitchApi
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.searchChannels(
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query: query,
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headers: authStore.headersTwitch,
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)
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.then(
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(channels) {
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channels.sort((c1, c2) => c2.isLive ? 1 : -1);
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return channels;
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},
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).asObservable();
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// Fetch and set the categories that match the query.
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_categoryFuture = twitchApi
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.searchCategories(
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query: query,
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headers: authStore.headersTwitch,
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)
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.then((categories) {
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// Move exact matches to the first result
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final matchingIndex = categories.data
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.indexWhere((c) => c.name.toLowerCase() == query.toLowerCase());
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if (matchingIndex >= 1) {
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final matchingCategory = categories.data.removeAt(matchingIndex);
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categories.data.insert(0, matchingCategory);
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}
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return categories;
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}).asObservable();
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}
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/// Find a specific channel provided the [query].
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/// This is used for channels that may not show up in the search results.
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Future<Channel> searchChannel(String query) async {
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final user = await twitchApi.getUser(
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userLogin: query,
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headers: authStore.headersTwitch,
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);
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return await twitchApi.getChannel(
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userId: user.id,
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headers: authStore.headersTwitch,
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);
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}
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void dispose() {
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textEditingController.dispose();
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textFieldFocusNode.dispose();
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}
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}
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