/// <summary>
/// Download file from server to local, and keep contentInfo to recentViewedFiles.
/// </summary>
/// <param name="contentInfo"></param>
/// <returns></returns>
public async Task<StorageFile> DownloadFile(KbListContentInfo contentInfo)
{
StorageFile sfile = null;
if (await CheckToken())
{
sfile = await KBApiUtil.DownloadFileAsync(contentInfo.FullPath, token);
if (!recentViewedFiles.Exists(o => o.FullPath.Equals(contentInfo.FullPath)))
{
recentViewedFiles.Insert(0, contentInfo);
}
}
return sfile;
}
// Get icon file path for individual extend file name.
private string getFileIcon(KbListContentInfo contentInfo)
{
string fileIconPath = "Images/";
if (contentInfo.IsFolder)
{
fileIconPath += ICON_FILETYPE_FOLDER;
}
else
{
string fileTypeIcon = ICON_FILETYPE_UNKNOWN;
string fileExt = contentInfo.FullPath.Substring(contentInfo.FullPath.LastIndexOf(".") + 1);
if (fileExt != null)
{
fileExt = fileExt.ToLower();
if (!FileTypeIcon.TryGetValue(fileExt, out fileTypeIcon))
{
fileTypeIcon = ICON_FILETYPE_UNKNOWN;
}
}
fileIconPath += fileTypeIcon;
}
return fileIconPath;
}