index.xaml.cs

using HandyControl.Controls;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using RestSharp;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media.Media3D;
using System.Windows.Threading;



namespace Bilibili_Client
{
    /// <summary>
    /// index.xaml 的交互逻辑
    /// </summary>


    public partial class index : Page
    {
        public delegate void Index_Page_Open_Video(string avid);//主窗口发送给登录窗口类
        public Index_Page_Open_Video index_Page_Open_Video;
        ManualResetEvent Thread_blocking = new ManualResetEvent(true);//线程阻塞
        CoverFlow coverFlow = new CoverFlow();
        int Download_Complete = 0;
        public index()
        {
            
            InitializeComponent();
            Thread Updata_Index_Featured_Video_Thread = new Thread(Updata_Index);//加载推荐视频的函数加入一个新的子线程
            Updata_Index_Featured_Video_Thread.Name = "Updata_Index_Featured_Video_Thread";
            Updata_Index_Featured_Video_Thread.Start();//线程开始
            Thread ADD_Homepage_Ad_Thread = new Thread(ADD_Homepage_Ad);//加载推荐视频的函数加入一个新的子线程
            ADD_Homepage_Ad_Thread.Name = "ADD_Homepage_Ad_Thread";
            ADD_Homepage_Ad_Thread.Start();//线程开始
            CoverFlow coverFlow = new CoverFlow();
            coverFlow.Margin = new Thickness(32);
            coverFlow.Width = 800;
            coverFlow.Height = 260;
            coverFlow.Loop = true;
            Index_Grid.Children.Add(coverFlow);
        }
        private readonly TaskScheduler _syncContextTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();

        //主页广告
        private void ADD_Homepage_Ad()
        {

            var client = new RestClient("https://app.bilibili.com/x/v2/feed/index?idx=0&flush=0&column=4&device=pad&pull=true&build=5520400&appkey=4ebafd7c4951b366&mobi_app=iphone&platform=ios&ts=1596754509&access_key=71626a38ce02b8a18b9a8b0dd8add481&sign=5d3bbfa008082c409bf56603278ea7a8");
            var request = new RestRequest(Method.GET);
            IRestResponse response = client.Execute(request);
            JObject recommend = (JObject)JsonConvert.DeserializeObject(response.Content);
            JToken items = recommend["data"]["items"][0]["banner_item"];
            for (int i = 0; i <= items.Count() - 1; i++)
            {

                if (File.Exists(@"Data\Cache\Img\Cover\" + items[i]["id"].ToString() + ".jpg"))
                {
                    coverFlow.Add(new Uri(@"Data\Cache\Img\Cover\" + items[i]["id"].ToString() + ".jpg", UriKind.Relative));
                    Download_Complete++;
                }
                else
                {

                    WebClient Client = new WebClient();
                    Uri uri = new Uri(items[i]["image"].ToString());
                    Client.DownloadFileCompleted += Down_Cover_Completed;
                    Client.DownloadFileAsync(uri, @"Data\Cache\Img\Cover\" + items[i]["id"].ToString() + ".jpg", @"Data\Cache\Img\Cover\" + items[i]["id"].ToString() + ".jpg");

                }
            }

            Thread AD_Cover_Download_Completed_Thread=new Thread((obj) =>
            {
                while (true)
                {
                    if (Download_Complete == (int)obj)
                    {
                        this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate ()
                        {
                            coverFlow.JumpTo(1);
                            Index_Grid.Children.Add(coverFlow);
                        });
                        break;
                    }
                }
            });
            AD_Cover_Download_Completed_Thread.Name = "AD_Cover_Download_Completed_Thread";
            AD_Cover_Download_Completed_Thread.Start(items.Count());
            client = null;
            request = null;
            response = null;
            recommend = null;
        }

        //广告封面下载完成
        private void Down_Cover_Completed(object sender, AsyncCompletedEventArgs e)
        {

            if (e.UserState != null)
            {
                coverFlow.Add(new Uri(e.UserState.ToString(), UriKind.Relative));
                Download_Complete++;
            }
        }
        bool IsCompleted = false;
        bool first = true;
        List<double_row_video> double_row_videos = new List<double_row_video>();
        JToken items;
        int last_count = 1;
        //主页推荐
        private void Updata_Index()
        {
            var client = new RestClient("https://app.bilibili.com/x/v2/feed/index?device=pad&mobi_app=iphone");
            IRestResponse response;
            JObject recommend;
            while (true)
            {
                Thread_blocking.WaitOne();
                if (last_count == 19 | last_count == 1)
                {
                    var request = new RestRequest(Method.GET);
                    response = client.Execute(request);
                    recommend = (JObject)JsonConvert.DeserializeObject(response.Content);
                    items = recommend["data"]["items"];
                    last_count = 1;
                }
                IsCompleted = Parallel.For(last_count, first ? 18 : last_count + 3, (obj, loopstate) =>
                     {
                         double_row_videos.Add
                                 (
                                 new double_row_video(
                           items[obj]["avatar"]["cover"].ToString() + "@20w_20h_1q.jpg",//up头像
                           items[obj]["desc"].ToString(),//up名字
                           items[obj]["cover"].ToString() + "@288w_180h_1q.jpg",//封面
                           items[obj]["cover_left_text_1"].ToString(),//时长
                           items[obj]["title"].ToString(),//标题
                           items[obj]["args"]["rname"].ToString(),//分区
                           items[obj]["cover_left_text_2"].ToString(),//播放量
                           items[obj]["cover_left_text_3"].ToString(),//弹幕数
                           items[obj]["param"].ToString()//AV号
                                                    )
                                   );
                     }).IsCompleted;
                Parallel_IsCompleted = IsCompleted;
                if (!first)
                {
                    Thread_blocking.Reset();

                }
                else
                    first = false;
            }
        }
        public bool Parallel_IsCompleted
        {
            get
            {
                return IsCompleted;
            }
            set
            {
                if (IsCompleted)
                    this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate ()
                    {
                        for (int i = 0; i < double_row_videos.Count; i++)
                            content_box.Items.Add(double_row_videos[i]);//按照模板加入一个item
                        double_row_videos.Clear();
                        last_count += 3;
                    });
            }
        }
        public class double_row_video
        {
            public string head_img_url { get; private set; }
            public string video_cover { get; private set; }
            public string video_up { get; private set; }
            public string video_title { get; private set; }
            public string video_play_volume { get; private set; }
            public string video_barrages { get; private set; }
            public string video_duration { get; private set; }
            public string video_partition { get; private set; }
            public string Avid { get; private set; }


            public double_row_video(
                string up_head, //up头像
                string up,//up名字
                string cover,//封面
                string duration,//时长
                string title,//标题
                string partition,//分区
                string play_volume, //播放量
                string barrages, //弹幕数
                string avid//AV号
                )
            {
                head_img_url = up_head;//up头像
                video_up = up;//up名字
                video_cover = cover;//封面
                video_duration = duration;//时长
                video_title = title;//标题
                video_partition = partition;//分区
                video_play_volume = play_volume;//播放量
                video_barrages = barrages;//弹幕数
                Avid = avid;

            }
        }
        double last_ContentVerticalOffset = 0;
        private void ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            if (index_scrollViewer.ContentVerticalOffset - last_ContentVerticalOffset > 10 && index_scrollViewer.ScrollableHeight - index_scrollViewer.ContentVerticalOffset < 2000)
            {
                Thread_blocking.Set();
                last_ContentVerticalOffset = index_scrollViewer.ContentVerticalOffset;
            }


        }

        private void content_box_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta)
            {
                RoutedEvent = UIElement.MouseWheelEvent,
                Source = sender
            };
            this.content_box.RaiseEvent(eventArg);
        }


        private void Goto_Video_Page(object sender, ExecutedRoutedEventArgs e)
        {
            string avid = ((Button)e.Parameter).Uid.ToString();

            index_Page_Open_Video(avid);

        }
    }
}