chore: first version
This commit is contained in:
JNIH
@@ -0,0 +1,555 @@
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using Microsoft.CommandPalette.Extensions;
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using Microsoft.CommandPalette.Extensions.Toolkit;
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using Olive.Commands;
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using Olive.Helpers;
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using Olive.Klipy;
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using Olive.Services;
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using Windows.Foundation;
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using Windows.System;
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namespace Olive.Pages;
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internal sealed partial class GifPickerPage : IDynamicListPage
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{
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private const int PageSize = 30;
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private const int InitialBatchPages = 1;
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private const int LoadMoreBatchPages = 1;
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private static readonly TimeSpan SearchDebounceDelay = TimeSpan.FromMilliseconds(500);
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private readonly Lock _itemsLock = new();
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private readonly GifCache _cache = new();
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private readonly SettingsManager _settingsManager;
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private readonly List<IListItem> _items = [];
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private readonly IIconInfo _icon = IconHelpers.FromRelativePath("Assets\\StoreLogo.png");
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private readonly IGridProperties _gridProperties = new GalleryGridLayout { ShowTitle = true, ShowSubtitle = false };
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private CancellationTokenSource? _searchCancellation;
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private string _searchText = string.Empty;
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private string _activeSearch = string.Empty;
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private string _title = "Olive";
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private int _searchVersion;
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private int _loadRequestId;
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private int _nextPage = 1;
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private int _loadedItemCount;
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private bool _hasMoreItems;
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private bool _isLoading;
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private bool _isLoadingMore;
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private ICommandItem _emptyContent;
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public GifPickerPage(SettingsManager settingsManager)
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{
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_settingsManager = settingsManager;
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_emptyContent = InitialContent();
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}
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public event TypedEventHandler<object, IItemsChangedEventArgs>? ItemsChanged;
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public event TypedEventHandler<object, IPropChangedEventArgs>? PropChanged;
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public IIconInfo Icon => _icon;
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public string Id => string.Empty;
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public string Name => "Olive GIF Picker";
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public string Title => _title;
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public OptionalColor AccentColor => default;
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public bool IsLoading
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{
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get => _isLoading;
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private set
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{
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if (_isLoading == value)
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{
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return;
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}
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_isLoading = value;
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RaisePropChanged(nameof(IsLoading));
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}
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}
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public string PlaceholderText => "Search for GIFs...";
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public bool ShowDetails => false;
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public bool HasMoreItems
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{
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get => _hasMoreItems;
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private set
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{
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if (_hasMoreItems == value)
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{
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return;
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}
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_hasMoreItems = value;
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RaisePropChanged(nameof(HasMoreItems));
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}
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}
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public IFilters? Filters => null;
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public IGridProperties GridProperties => _gridProperties;
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public ICommandItem EmptyContent
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{
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get => _emptyContent;
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private set
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{
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_emptyContent = value;
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RaisePropChanged(nameof(EmptyContent));
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}
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}
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public string? SearchText
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{
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get => _searchText;
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set
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{
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value ??= string.Empty;
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if (StringComparer.Ordinal.Equals(_searchText, value))
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{
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return;
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}
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_searchText = value;
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UpdateSearchText(value);
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}
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}
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public IListItem[] GetItems()
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{
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lock (_itemsLock)
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{
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return BuildDisplayItemsLocked();
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}
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}
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public void LoadMore()
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{
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if (_isLoadingMore || !HasMoreItems || string.IsNullOrWhiteSpace(_activeSearch))
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{
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return;
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}
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var apiKey = _settingsManager.KlipyApiKey;
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if (string.IsNullOrWhiteSpace(apiKey))
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{
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HasMoreItems = false;
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EmptyContent = MissingApiKeyContent();
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RaiseItemsChanged(DisplayItemCount());
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return;
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}
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var version = _searchVersion;
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_ = LoadPageBatchAsync(apiKey, _activeSearch, version, LoadMoreBatchPages, CancellationToken.None);
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}
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private void UpdateSearchText(string newSearch)
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{
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CancelSearch();
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var trimmedSearch = newSearch.Trim();
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if (string.IsNullOrWhiteSpace(trimmedSearch))
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{
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Interlocked.Increment(ref _searchVersion);
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Interlocked.Increment(ref _loadRequestId);
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IsLoading = false;
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_isLoadingMore = false;
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HasMoreItems = false;
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_activeSearch = string.Empty;
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_nextPage = 1;
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ReplaceItems([]);
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UpdateTitle();
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EmptyContent = _settingsManager.HasKlipyApiKey ? InitialContent() : MissingApiKeyContent();
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return;
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}
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var version = Interlocked.Increment(ref _searchVersion);
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Interlocked.Increment(ref _loadRequestId);
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var cancellation = new CancellationTokenSource();
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_searchCancellation = cancellation;
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_ = SearchAfterDebounceAsync(trimmedSearch, version, cancellation.Token);
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}
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private void CancelSearch()
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{
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var cancellation = _searchCancellation;
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_searchCancellation = null;
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if (cancellation is null)
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{
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return;
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}
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try
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{
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cancellation.Cancel();
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}
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catch (ObjectDisposedException)
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{
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}
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cancellation.Dispose();
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}
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private async Task SearchAfterDebounceAsync(string search, int version, CancellationToken cancellationToken)
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{
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try
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{
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await Task.Delay(SearchDebounceDelay, cancellationToken).ConfigureAwait(false);
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var apiKey = _settingsManager.KlipyApiKey;
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if (string.IsNullOrWhiteSpace(apiKey))
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{
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if (version != _searchVersion || cancellationToken.IsCancellationRequested)
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{
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return;
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}
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IsLoading = false;
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HasMoreItems = false;
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EmptyContent = MissingApiKeyContent();
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ReplaceItems([]);
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return;
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}
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if (version != _searchVersion || cancellationToken.IsCancellationRequested)
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{
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return;
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}
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_activeSearch = search;
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_nextPage = 1;
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_isLoadingMore = false;
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HasMoreItems = false;
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IsLoading = true;
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EmptyContent = LoadingContent(search);
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UpdateTitle();
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await LoadPageBatchAsync(apiKey, search, version, InitialBatchPages, cancellationToken).ConfigureAwait(false);
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}
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catch (OperationCanceledException)
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{
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}
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catch (Exception ex)
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{
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if (version == _searchVersion)
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{
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ShowSearchError(ex, resetItems: true);
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}
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}
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}
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private async Task LoadPageBatchAsync(string apiKey, string search, int version, int pageCount, CancellationToken cancellationToken)
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{
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if (_isLoadingMore)
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{
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return;
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}
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var loadRequestId = Interlocked.Increment(ref _loadRequestId);
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var startPage = _nextPage;
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var resetItems = startPage == 1;
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try
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{
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_isLoadingMore = true;
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IsLoading = true;
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var gifs = new List<KlipyGif>(PageSize * pageCount);
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var nextPage = startPage;
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var hasMore = false;
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for (var i = 0; i < pageCount && version == _searchVersion && !cancellationToken.IsCancellationRequested; i++)
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{
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var page = startPage + i;
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var result = await KlipyClient.SearchAsync(apiKey, search, page, PageSize, cancellationToken).ConfigureAwait(false);
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if (version != _searchVersion || cancellationToken.IsCancellationRequested)
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{
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return;
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}
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gifs.AddRange(result.Gifs);
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nextPage = page + 1;
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hasMore = result.HasMore;
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if (!hasMore)
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{
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break;
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}
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}
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_nextPage = nextPage;
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HasMoreItems = hasMore;
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if (resetItems && gifs.Count == 0)
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{
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EmptyContent = new CommandItem(new NoOpCommand())
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{
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Title = "No GIF found",
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Subtitle = $"Try another search for \"{search}\".",
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Icon = Icon,
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};
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ReplaceItems([]);
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return;
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}
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var newItems = gifs.Select(CreateItem).ToArray();
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if (resetItems)
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{
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ReplaceItems(newItems);
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}
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else
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{
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AppendItems(newItems);
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}
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}
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catch (Exception ex) when (ex is HttpRequestException or InvalidOperationException or TaskCanceledException)
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{
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if (version == _searchVersion)
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{
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ShowSearchError(ex, resetItems);
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}
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}
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catch (Exception ex)
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{
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if (version == _searchVersion)
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{
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ShowSearchError(ex, resetItems);
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}
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}
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finally
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{
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if (loadRequestId == _loadRequestId)
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{
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_isLoadingMore = false;
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}
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if (version == _searchVersion && loadRequestId == _loadRequestId)
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{
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IsLoading = false;
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}
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}
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}
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private void ShowSearchError(Exception ex, bool resetItems)
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{
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IsLoading = false;
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HasMoreItems = false;
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EmptyContent = new CommandItem(new NoOpCommand())
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{
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Title = "Search failed",
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Subtitle = ex.Message,
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Icon = Icon,
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};
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if (resetItems)
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{
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ReplaceItems([]);
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}
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else
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{
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RaiseItemsChanged(DisplayItemCount());
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}
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}
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private ListItem CreateItem(KlipyGif gif)
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{
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return new ListItem(new CopyGifCommand(gif, _cache))
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{
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Title = string.Empty,
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Subtitle = string.Empty,
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Icon = new IconInfo(gif.ThumbnailGifUrl.ToString()),
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MoreCommands = CreateLoadMoreContextItems(),
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};
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}
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private IContextItem[] CreateLoadMoreContextItems()
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{
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return [
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CreateLoadMoreContextItem("Load 30 more GIFs", VirtualKey.L),
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];
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}
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private CommandContextItem CreateLoadMoreContextItem(string title, VirtualKey key)
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{
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return new CommandContextItem(new LoadMoreGifsCommand(LoadMore))
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{
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Title = title,
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Subtitle = "Append the next 30 results without moving the current selection",
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Icon = Icon,
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RequestedShortcut = KeyChordHelpers.FromModifiers(true, false, false, false, key, 0),
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};
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}
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private CommandItem InitialContent()
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{
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return new CommandItem(new NoOpCommand())
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{
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Title = _settingsManager.HasKlipyApiKey ? "Search GIFs" : "Klipy API key missing",
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Subtitle = _settingsManager.HasKlipyApiKey
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? "Type something like thanks, excited, cat, or confused."
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: "Open Olive settings and set the Klipy API key.",
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Icon = Icon,
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};
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}
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private CommandItem LoadingContent(string search)
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{
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return new CommandItem(new NoOpCommand())
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{
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Title = "Loading GIFs...",
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Subtitle = $"Searching Klipy for \"{search}\"",
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Icon = Icon,
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};
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}
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private CommandItem MissingApiKeyContent()
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{
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return new CommandItem(new NoOpCommand())
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{
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Title = "Klipy API key missing",
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Subtitle = "Open Olive settings and paste your Klipy API key.",
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Icon = Icon,
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};
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}
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private void ReplaceItems(IListItem[] items)
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{
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int count;
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lock (_itemsLock)
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{
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_items.Clear();
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_items.AddRange(items);
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_loadedItemCount = items.Length;
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AddPlaceholderItemsLocked();
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count = DisplayItemCountLocked();
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}
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RaiseItemsChanged(count);
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UpdateTitle();
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}
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private void AppendItems(IListItem[] items)
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{
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int count;
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lock (_itemsLock)
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{
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RemovePlaceholderItemsLocked();
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_items.AddRange(items);
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_loadedItemCount += items.Length;
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AddPlaceholderItemsLocked();
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count = DisplayItemCountLocked();
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}
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RaiseItemsChanged(count);
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UpdateTitle();
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}
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private IListItem[] BuildDisplayItemsLocked()
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{
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return [.. _items];
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}
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private void AddPlaceholderItemsLocked()
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{
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if (!HasMoreItems)
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{
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return;
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}
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for (var i = 0; i < PageSize * LoadMoreBatchPages; i++)
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{
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_items.Add(CreateVirtualLoadingItem());
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}
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}
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private void RemovePlaceholderItemsLocked()
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{
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if (_items.Count > _loadedItemCount)
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{
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_items.RemoveRange(_loadedItemCount, _items.Count - _loadedItemCount);
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}
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}
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private ListItem CreateVirtualLoadingItem()
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{
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return new ListItem(new LoadMoreGifsCommand(LoadMore))
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{
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Title = "Loading more GIFs...",
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Subtitle = "Scroll here or press Ctrl+L to load the next 30",
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Icon = Icon,
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MoreCommands = CreateLoadMoreContextItems(),
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};
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}
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private int DisplayItemCount()
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{
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lock (_itemsLock)
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{
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return DisplayItemCountLocked();
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}
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}
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private int DisplayItemCountLocked()
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{
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return _items.Count;
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}
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private void RaiseItemsChanged(int count)
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{
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ItemsChanged?.Invoke(this, new ItemsChangedEventArgs(count));
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}
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private void RaisePropChanged(string propertyName)
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{
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PropChanged?.Invoke(this, new PropChangedEventArgs(propertyName));
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}
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private void UpdateTitle()
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{
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var loadedCount = LoadedItemCount();
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var title = string.IsNullOrWhiteSpace(_activeSearch) || loadedCount == 0
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? "Olive"
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: HasMoreItems
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? $"Olive - {loadedCount} GIFs loaded"
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: $"Olive - {loadedCount} GIFs loaded (all)";
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if (StringComparer.Ordinal.Equals(_title, title))
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{
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return;
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}
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_title = title;
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RaisePropChanged(nameof(Title));
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}
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private int LoadedItemCount()
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{
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lock (_itemsLock)
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{
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return _loadedItemCount;
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}
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}
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private sealed partial class LoadMoreGifsCommand : InvokableCommand
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{
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private readonly Action _loadMore;
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public LoadMoreGifsCommand(Action loadMore)
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{
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_loadMore = loadMore;
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Name = "Load 30 more GIFs";
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Icon = IconHelpers.FromRelativePath("Assets\\StoreLogo.png");
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}
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public override ICommandResult Invoke()
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{
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_loadMore();
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return CommandResult.KeepOpen();
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}
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}
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}
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