mirror of
https://github.com/yaobiao131/downkyicore.git
synced 2025-08-10 00:52:31 +00:00
559 lines
17 KiB
C#
559 lines
17 KiB
C#
#nullable disable
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using Avalonia.Media.Imaging;
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using DownKyi.Core.BiliApi.VideoStream;
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using DownKyi.Core.Storage;
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using DownKyi.Core.Utils;
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using DownKyi.CustomControl;
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using DownKyi.Events;
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using DownKyi.Images;
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using DownKyi.PrismExtension.Dialog;
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using DownKyi.Services;
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using DownKyi.Services.Download;
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using DownKyi.Utils;
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using DownKyi.ViewModels.PageViewModels;
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using DownKyi.ViewModels.UserSpace;
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using Prism.Commands;
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using Prism.Events;
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using Prism.Regions;
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namespace DownKyi.ViewModels
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{
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public class ViewPublicationViewModel : ViewModelBase
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{
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public const string Tag = "PagePublication";
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private CancellationTokenSource _tokenSource;
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private long _mid = -1;
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// 每页视频数量，暂时在此写死，以后在设置中增加选项
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private readonly int _videoNumberInPage = 30;
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#region 页面属性申明
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private string _pageName = Tag;
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public string PageName
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{
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get => _pageName;
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set => SetProperty(ref _pageName, value);
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}
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private bool _loading;
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public bool Loading
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{
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get => _loading;
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set => SetProperty(ref _loading, value);
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}
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private bool _loadingVisibility;
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public bool LoadingVisibility
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{
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get => _loadingVisibility;
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set => SetProperty(ref _loadingVisibility, value);
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}
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private bool _noDataVisibility;
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public bool NoDataVisibility
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{
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get => _noDataVisibility;
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set => SetProperty(ref _noDataVisibility, value);
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}
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private VectorImage _arrowBack;
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public VectorImage ArrowBack
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{
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get => _arrowBack;
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set => SetProperty(ref _arrowBack, value);
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}
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private VectorImage _downloadManage;
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public VectorImage DownloadManage
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{
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get => _downloadManage;
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set => SetProperty(ref _downloadManage, value);
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}
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private ObservableCollection<TabHeader> _tabHeaders;
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public ObservableCollection<TabHeader> TabHeaders
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{
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get => _tabHeaders;
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set => SetProperty(ref _tabHeaders, value);
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}
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private int _selectTabId;
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public int SelectTabId
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{
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get => _selectTabId;
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set => SetProperty(ref _selectTabId, value);
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}
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private bool _isEnabled = true;
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public bool IsEnabled
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{
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get => _isEnabled;
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set => SetProperty(ref _isEnabled, value);
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}
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private CustomPagerViewModel _pager;
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public CustomPagerViewModel Pager
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{
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get => _pager;
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set => SetProperty(ref _pager, value);
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}
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private ObservableCollection<PublicationMedia> _medias;
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public ObservableCollection<PublicationMedia> Medias
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{
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get => _medias;
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set => SetProperty(ref _medias, value);
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}
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private bool _isSelectAll;
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public bool IsSelectAll
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{
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get => _isSelectAll;
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set => SetProperty(ref _isSelectAll, value);
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}
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#endregion
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public ViewPublicationViewModel(IEventAggregator eventAggregator, IDialogService dialogService) : base(
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eventAggregator)
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{
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DialogService = dialogService;
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#region 属性初始化
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// 初始化loading
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Loading = true;
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LoadingVisibility = false;
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NoDataVisibility = false;
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ArrowBack = NavigationIcon.Instance().ArrowBack;
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ArrowBack.Fill = DictionaryResource.GetColor("ColorTextDark");
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// 下载管理按钮
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DownloadManage = ButtonIcon.Instance().DownloadManage;
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DownloadManage.Height = 24;
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DownloadManage.Width = 24;
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DownloadManage.Fill = DictionaryResource.GetColor("ColorPrimary");
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TabHeaders = new ObservableCollection<TabHeader>();
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Medias = new ObservableCollection<PublicationMedia>();
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#endregion
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}
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#region 命令申明
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// 返回事件
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private DelegateCommand _backSpaceCommand;
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public DelegateCommand BackSpaceCommand => _backSpaceCommand ??= new DelegateCommand(ExecuteBackSpace);
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/// <summary>
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/// 返回事件
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/// </summary>
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private void ExecuteBackSpace()
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{
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ArrowBack.Fill = DictionaryResource.GetColor("ColorText");
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// 结束任务
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_tokenSource?.Cancel();
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var parameter = new NavigationParam
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{
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ViewName = ParentView,
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ParentViewName = null,
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Parameter = null
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};
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EventAggregator.GetEvent<NavigationEvent>().Publish(parameter);
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}
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// 前往下载管理页面
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private DelegateCommand _downloadManagerCommand;
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public DelegateCommand DownloadManagerCommand => _downloadManagerCommand ??= new DelegateCommand(ExecuteDownloadManagerCommand);
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/// <summary>
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/// 前往下载管理页面
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/// </summary>
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private void ExecuteDownloadManagerCommand()
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{
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var parameter = new NavigationParam
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{
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ViewName = ViewDownloadManagerViewModel.Tag,
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ParentViewName = Tag,
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Parameter = null
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};
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EventAggregator.GetEvent<NavigationEvent>().Publish(parameter);
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}
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// 左侧tab点击事件
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private DelegateCommand<object> _leftTabHeadersCommand;
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public DelegateCommand<object> LeftTabHeadersCommand =>
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_leftTabHeadersCommand ??= new DelegateCommand<object>(ExecuteLeftTabHeadersCommand, CanExecuteLeftTabHeadersCommand);
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/// <summary>
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/// 左侧tab点击事件
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/// </summary>
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/// <param name="parameter"></param>
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private void ExecuteLeftTabHeadersCommand(object parameter)
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{
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if (parameter is not TabHeader tabHeader)
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{
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return;
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}
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// 页面选择
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Pager = new CustomPagerViewModel(1,
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(int)Math.Ceiling(double.Parse(tabHeader.SubTitle) / _videoNumberInPage));
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Pager.CurrentChanged += OnCurrentChanged_Pager;
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Pager.CountChanged += OnCountChanged_Pager;
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Pager.Current = 1;
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}
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/// <summary>
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/// 左侧tab点击事件是否允许执行
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/// </summary>
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/// <param name="parameter"></param>
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/// <returns></returns>
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private bool CanExecuteLeftTabHeadersCommand(object parameter)
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{
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return IsEnabled;
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}
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// 全选按钮点击事件
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private DelegateCommand<object> _selectAllCommand;
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public DelegateCommand<object> SelectAllCommand => _selectAllCommand ??= new DelegateCommand<object>(ExecuteSelectAllCommand);
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/// <summary>
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/// 全选按钮点击事件
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/// </summary>
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/// <param name="parameter"></param>
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private void ExecuteSelectAllCommand(object parameter)
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{
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if (IsSelectAll)
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{
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foreach (var item in Medias)
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{
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item.IsSelected = true;
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}
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}
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else
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{
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foreach (var item in Medias)
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{
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item.IsSelected = false;
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}
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}
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}
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// 列表选择事件
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private DelegateCommand<object> _mediasCommand;
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public DelegateCommand<object> MediasCommand => _mediasCommand ??= new DelegateCommand<object>(ExecuteMediasCommand);
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/// <summary>
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/// 列表选择事件
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/// </summary>
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/// <param name="parameter"></param>
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private void ExecuteMediasCommand(object parameter)
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{
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if (parameter is not IList selectedMedia)
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{
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return;
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}
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IsSelectAll = selectedMedia.Count == Medias.Count;
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}
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// 添加选中项到下载列表事件
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private DelegateCommand _addToDownloadCommand;
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public DelegateCommand AddToDownloadCommand => _addToDownloadCommand ??= new DelegateCommand(ExecuteAddToDownloadCommand);
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/// <summary>
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/// 添加选中项到下载列表事件
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/// </summary>
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private void ExecuteAddToDownloadCommand()
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{
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AddToDownload(true);
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}
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// 添加所有视频到下载列表事件
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private DelegateCommand _addAllToDownloadCommand;
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public DelegateCommand AddAllToDownloadCommand => _addAllToDownloadCommand ??= new DelegateCommand(ExecuteAddAllToDownloadCommand);
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/// <summary>
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/// 添加所有视频到下载列表事件
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/// </summary>
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private void ExecuteAddAllToDownloadCommand()
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{
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AddToDownload(false);
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}
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#endregion
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/// <summary>
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/// 添加到下载
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/// </summary>
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/// <param name="isOnlySelected"></param>
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private async void AddToDownload(bool isOnlySelected)
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{
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// 收藏夹里只有视频
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var addToDownloadService = new AddToDownloadService(PlayStreamType.VIDEO);
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// 选择文件夹
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var directory = await addToDownloadService.SetDirectory(DialogService);
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// 视频计数
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var i = 0;
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await Task.Run(async () =>
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{
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// 为了避免执行其他操作时，
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// Medias变化导致的异常
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var list = Medias.ToList();
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// 添加到下载
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foreach (var videoInfoService in from media in list where !isOnlySelected || media.IsSelected select new VideoInfoService(media.Bvid))
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{
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addToDownloadService.SetVideoInfoService(videoInfoService);
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addToDownloadService.GetVideo();
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addToDownloadService.ParseVideo(videoInfoService);
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// 下载
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i += await addToDownloadService.AddToDownload(EventAggregator, DialogService, directory);
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}
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});
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if (directory == null)
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{
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return;
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}
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// 通知用户添加到下载列表的结果
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if (i <= 0)
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{
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EventAggregator.GetEvent<MessageEvent>().Publish(DictionaryResource.GetString("TipAddDownloadingZero"));
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}
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else
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{
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EventAggregator.GetEvent<MessageEvent>()
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.Publish(
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$"{DictionaryResource.GetString("TipAddDownloadingFinished1")}{i}{DictionaryResource.GetString("TipAddDownloadingFinished2")}");
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}
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}
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private void OnCountChanged_Pager(int count)
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{
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}
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private bool OnCurrentChanged_Pager(int old, int current)
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{
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if (!IsEnabled)
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{
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//Pager.Current = old;
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return false;
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}
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Medias.Clear();
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IsSelectAll = false;
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LoadingVisibility = true;
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NoDataVisibility = false;
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UpdatePublication(current);
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return true;
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}
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private static string StringToUnicode(string s)
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{
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var charbuffers = s.ToCharArray();
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byte[] buffer;
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var sb = new StringBuilder();
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for (var i = 0; i < charbuffers.Length; i++)
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{
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buffer = Encoding.Unicode.GetBytes(charbuffers[i].ToString());
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sb.Append($"\\u{buffer[1]:X2}{buffer[0]:X2}");
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}
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return sb.ToString();
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}
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private async void UpdatePublication(int current)
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{
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// 是否正在获取数据
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// 在所有的退出分支中都需要设为true
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IsEnabled = false;
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var tab = TabHeaders[SelectTabId];
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await Task.Run(() =>
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{
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var cancellationToken = _tokenSource.Token;
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var publications = Core.BiliApi.Users.UserSpace.GetPublication(_mid, current, _videoNumberInPage, tab.Id);
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if (publications == null)
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{
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// 没有数据，UI提示
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LoadingVisibility = false;
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NoDataVisibility = true;
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return;
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}
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var videos = publications.Vlist;
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if (videos == null)
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{
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// 没有数据，UI提示
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LoadingVisibility = false;
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NoDataVisibility = true;
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return;
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}
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foreach (var video in videos)
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{
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// 查询、保存封面
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var coverUrl = video.Pic;
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Bitmap cover;
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if (coverUrl == null || coverUrl == "")
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{
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cover = null; // new BitmapImage(new Uri($"pack://application:,,,/Resources/video-placeholder.png"));
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}
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else
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{
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if (!coverUrl.ToLower().StartsWith("http"))
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{
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coverUrl = $"https:{video.Pic}";
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}
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var storageCover = new StorageCover();
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cover = storageCover.GetCoverThumbnail(video.Aid, video.Bvid, -1, coverUrl, 200, 125);
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}
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// 播放数
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var play = string.Empty;
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if (video.Play > 0)
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{
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play = Format.FormatNumber(video.Play);
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}
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else
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{
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play = "--";
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}
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var startTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); // 当地时区
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var dateCTime = startTime.AddSeconds(video.Created);
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var ctime = dateCTime.ToString("yyyy-MM-dd");
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App.PropertyChangeAsync(() =>
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{
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var media = new PublicationMedia(EventAggregator)
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{
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Avid = video.Aid,
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Bvid = video.Bvid,
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Cover = cover ?? ImageHelper.LoadFromResource(new Uri("avares://DownKyi/Resources/video-placeholder.png")),
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Duration = video.Length,
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Title = video.Title,
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PlayNumber = play,
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CreateTime = ctime
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};
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_medias.Add(media);
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LoadingVisibility = false;
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NoDataVisibility = false;
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});
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// 判断是否该结束线程，若为true，跳出循环
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if (cancellationToken.IsCancellationRequested)
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{
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break;
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}
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}
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}, (_tokenSource = new CancellationTokenSource()).Token);
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IsEnabled = true;
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}
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/// <summary>
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/// 初始化页面数据
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/// </summary>
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private void InitView()
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{
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ArrowBack.Fill = DictionaryResource.GetColor("ColorTextDark");
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DownloadManage = ButtonIcon.Instance().DownloadManage;
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DownloadManage.Height = 24;
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DownloadManage.Width = 24;
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DownloadManage.Fill = DictionaryResource.GetColor("ColorPrimary");
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TabHeaders.Clear();
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Medias.Clear();
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SelectTabId = -1;
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IsSelectAll = false;
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}
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/// <summary>
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/// 导航到页面时执行
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/// </summary>
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/// <param name="navigationContext"></param>
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public override void OnNavigatedTo(NavigationContext navigationContext)
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{
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base.OnNavigatedTo(navigationContext);
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// 根据传入参数不同执行不同任务
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var parameter = navigationContext.Parameters.GetValue<Dictionary<string, object>>("Parameter");
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if (parameter == null)
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{
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return;
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}
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InitView();
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_mid = (long)parameter["mid"];
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var tid = (int)parameter["tid"];
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var zones = (List<PublicationZone>)parameter["list"];
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foreach (var item in zones)
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{
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TabHeaders.Add(new TabHeader
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{
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Id = item.Tid,
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Title = item.Name,
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SubTitle = item.Count.ToString()
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});
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}
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// 初始选中项
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var selectTab = TabHeaders.FirstOrDefault(item => item.Id == tid);
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SelectTabId = TabHeaders.IndexOf(selectTab);
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// 页面选择
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Pager = new CustomPagerViewModel(1,
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(int)Math.Ceiling(double.Parse(selectTab.SubTitle) / _videoNumberInPage));
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Pager.CurrentChanged += OnCurrentChanged_Pager;
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Pager.CountChanged += OnCountChanged_Pager;
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Pager.Current = 1;
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}
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}
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} |