downkyicore/DownKyi/ViewModels/DownloadManager/DownloadedItem.cs

using System.IO;
using System.Linq;
using DownKyi.Images;
using DownKyi.Models;
using DownKyi.Services;
using DownKyi.Utils;
using Prism.Commands;
using Prism.Services.Dialogs;

namespace DownKyi.ViewModels.DownloadManager
{
    public class DownloadedItem : DownloadBaseItem
    {
        public DownloadedItem() : this(null)
        {
        }

        public DownloadedItem(IDialogService dialogService) : base(dialogService)
        {
            // 打开文件夹按钮
            OpenFolder = ButtonIcon.Instance().Folder;
            OpenFolder.Fill = DictionaryResource.GetColor("ColorPrimary");

            // 打开视频按钮
            OpenVideo = ButtonIcon.Instance().Start;
            OpenVideo.Fill = DictionaryResource.GetColor("ColorPrimary");

            // 删除按钮
            RemoveVideo = ButtonIcon.Instance().Trash;
            RemoveVideo.Fill = DictionaryResource.GetColor("ColorWarning");
        }

        // model数据
        public Downloaded Downloaded { get; set; }

        //  下载速度
        public string MaxSpeedDisplay
        {
            get => Downloaded.MaxSpeedDisplay;
            set
            {
                Downloaded.MaxSpeedDisplay = value;
                RaisePropertyChanged("MaxSpeedDisplay");
            }
        }

        // 完成时间
        public string FinishedTime
        {
            get => Downloaded.FinishedTime;
            set
            {
                Downloaded.FinishedTime = value;
                RaisePropertyChanged("FinishedTime");
            }
        }

        #region 控制按钮

        private VectorImage openFolder;

        public VectorImage OpenFolder
        {
            get => openFolder;
            set => SetProperty(ref openFolder, value);
        }

        private VectorImage openVideo;

        public VectorImage OpenVideo
        {
            get => openVideo;
            set => SetProperty(ref openVideo, value);
        }

        private VectorImage removeVideo;

        public VectorImage RemoveVideo
        {
            get => removeVideo;
            set => SetProperty(ref removeVideo, value);
        }

        #endregion

        #region 命令申明

        // 打开文件夹事件
        private DelegateCommand openFolderCommand;

        public DelegateCommand OpenFolderCommand =>
            openFolderCommand ?? (openFolderCommand = new DelegateCommand(ExecuteOpenFolderCommand));

        /// <summary>
        /// 打开文件夹事件
        /// </summary>
        private void ExecuteOpenFolderCommand()
        {
            if (DownloadBase == null)
            {
                return;
            }

            //TODO:这里不光有mp4视频文件，也可能存在音频文件、字幕，或者其他文件类型
            //fix bug:Issues #709
            //这里根据需要下载的类型判断，具体对应的文件后缀名
            var downLoadContents = DownloadBase.NeedDownloadContent.Where(e => e.Value == true).Select(e => e.Key);
            var fileSuffix = string.Empty;
            if (downLoadContents.Contains("downloadVideo"))
            {
                fileSuffix = ".mp4";
            }
            else if (downLoadContents.Contains("downloadAudio"))
            {
                fileSuffix = ".aac";
            }
            else if (downLoadContents.Contains("downloadCover"))
            {
                fileSuffix = ".jpg";
            }

            var videoPath = $"{DownloadBase.FilePath}{fileSuffix}";
            var fileInfo = new FileInfo(videoPath);
            if (File.Exists(fileInfo.FullName))
            {
                PlatformHelper.OpenFolder(fileInfo.FullName);
            }
            else
            {
                //eventAggregator.GetEvent<MessageEvent>().Publish("没有找到视频文件，可能被删除或移动！");
            }
        }

        // 打开视频事件
        private DelegateCommand? _openVideoCommand;
        public DelegateCommand OpenVideoCommand => _openVideoCommand ??= new DelegateCommand(ExecuteOpenVideoCommand);

        /// <summary>
        /// 打开视频事件
        /// </summary>
        private void ExecuteOpenVideoCommand()
        {
            if (DownloadBase == null)
            {
                return;
            }

            var videoPath = $"{DownloadBase.FilePath}.mp4";
            var fileInfo = new FileInfo(videoPath);
            if (File.Exists(fileInfo.FullName))
            {
                PlatformHelper.Open(fileInfo.FullName);
            }
            else
            {
                //eventAggregator.GetEvent<MessageEvent>().Publish(DictionaryResource.GetString("TipAddDownloadingZero"));
                //eventAggregator.GetEvent<MessageEvent>().Publish("没有找到视频文件，可能被删除或移动！");
            }
        }

        // 删除事件
        private DelegateCommand removeVideoCommand;

        public DelegateCommand RemoveVideoCommand => removeVideoCommand ??
                                                     (removeVideoCommand =
                                                         new DelegateCommand(ExecuteRemoveVideoCommand));

        /// <summary>
        /// 删除事件
        /// </summary>
        private async void ExecuteRemoveVideoCommand()
        {
            AlertService alertService = new AlertService(DialogService);
            ButtonResult result = await alertService.ShowWarning(DictionaryResource.GetString("ConfirmDelete"), 2);
            if (result != ButtonResult.OK)
            {
                return;
            }

            App.DownloadedList.Remove(this);
        }

        #endregion
    }
}