private static async Task DownloadFromUrl(StorageFile file)
{
// Try to read .url file.
string url = await ParseInternetShortcut(file);
// Parse URL.
if (Uri.TryCreate(url, UriKind.Absolute, out var uri) &&
(uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps)) // This is true if file is online.
{
// Check to make sure this URL points to a file and not a webpage.
if (Path.HasExtension(uri.AbsoluteUri))
{
// Get MIME type of online file.
var mimeType = MimeTypeMap.GetMimeType(Path.GetExtension(uri.AbsoluteUri));
// Check if MIME type of online file is supported.
if (FileTypes.IsSupportedMIME(mimeType))
{
// Get folder.
var folder = await StorageApplicationPermissions.FutureAccessList.GetFolderAsync("gallery");
// Download without awaiting so the UI doesn't freeze.
OnlineUtil.DownloadFile(uri, folder);
}
}
}
}
private static async Task DownloadFromRedditUriAsync(Uri redditUri)
{
// Get JSON version of reddit page.
var json = await App.HttpClient.GetStringAsync(redditUri.ToString() + "/.json");
var jsonDatas = JArray.Parse(json);
var jsonData = jsonDatas.FirstOrDefault();
//string imageUrl = jsonData?.data?.children[0]?.data?.url;
var imageUrl = jsonData?.Value <JToken>("data")?.Value <JArray>("children")?.FirstOrDefault()?.Value <JToken>("data")?.Value <string>("url") ?? string.Empty;
if (string.IsNullOrEmpty(imageUrl))
{
return;
}
// Parse URL.
if (Uri.TryCreate(imageUrl, UriKind.Absolute, out var imageUri) &&
(imageUri.Scheme == Uri.UriSchemeHttp || imageUri.Scheme == Uri.UriSchemeHttps)) // This is true if file is online.
{
// Check to make sure this URL points to a file and not a webpage.
if (Path.HasExtension(imageUri.AbsoluteUri))
{
await DownloadFromUriAsync(imageUri);
}
else // It might be a video, check if it is.
{
string videoUrl = jsonData?.Value <JToken>("data")?.Value <JArray>("children")?.FirstOrDefault()?.Value <JToken>("data")?.Value <JToken>("media")?.Value <JToken>("reddit_video")?.Value <string>("fallback_url") ?? string.Empty;
if (string.IsNullOrEmpty(videoUrl))
{
return;
}
// Parse URL.
if (Uri.TryCreate(videoUrl, UriKind.Absolute, out var videoUri) &&
(videoUri.Scheme == Uri.UriSchemeHttp || videoUri.Scheme == Uri.UriSchemeHttps)) // This is true if file is online.
{
var urlContentType = await GetUrlContentTypeAsync(videoUrl);
// Check if url points to video before downloading.
if (urlContentType.StartsWith("video/"))
{
// Get folder.
var folder = await StorageApplicationPermissions.FutureAccessList.GetFolderAsync("gallery");
// Append extension to uri.
var fileName = videoUri.Segments[videoUri.Segments.Length - 1] + $".{urlContentType.Split("/").LastOrDefault() ?? "mp4"}";
// Download without awaiting so the UI doesn't freeze.
OnlineUtil.DownloadFile(videoUri, fileName, folder);
}
}
}
}
}
private static async Task DownloadFromUriAsync(Uri uri)
{
// Check to make sure this URL points to a file and not a webpage.
if (Path.HasExtension(uri.AbsoluteUri))
{
// Get MIME type of online file.
var mimeType = MimeTypeMap.GetMimeType(Path.GetExtension(uri.AbsoluteUri));
// Check if MIME type of online file is supported.
if (FileTypes.IsSupportedMIME(mimeType))
{
// Get folder.
var folder = await StorageApplicationPermissions.FutureAccessList.GetFolderAsync("gallery");
// Download without awaiting so the UI doesn't freeze.
OnlineUtil.DownloadFile(uri, folder);
}
}
}