static async Task <UpdateResult> TryGetNextPage(SubscriptionInfo sub)
{
try
{
var response = await httpClient.GetAsync(sub.GetNextPageUrl());
if (!response.IsSuccessStatusCode)
{
if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
{
Console.WriteLine($"No page yet for {sub.GetNextPageUrl()}. Stopping...");
return(UpdateResult.UpToDate);
}
Console.Error.WriteLine($"Failed to get content at url {sub.GetNextPageUrl()}. With status code {response.StatusCode}, reason \"{response.ReasonPhrase}\".");
return(UpdateResult.Error);
}
string body = await response.Content.ReadAsStringAsync();
SubscriptionInfo.ContentInfo imageInfo = sub.FindImage(body);
return(await GetImageIfNotExists(imageInfo));
}
catch (Exception e)
{
Console.Error.WriteLine(e.Message);
return(UpdateResult.Error);
}
}
static async Task <UpdateResult> GetImageIfNotExists(SubscriptionInfo.ContentInfo imageInfo)
{
string path = Path.Combine(subscriptions.SaveDir, imageInfo.localFilePath);
Directory.CreateDirectory(Path.GetDirectoryName(path));
if (File.Exists(path))
{
if (options.Verbose)
{
Console.WriteLine($"File {path} already exists. Skipping.");
}
// Act as if it is new content to update files with.
return(UpdateResult.ContentFound);
}
if (options.Verbose)
{
Console.WriteLine($"Downloading image from {imageInfo.imageURL} and saving to \"{path}\".");
}
try
{
using (var response = await httpClient.GetAsync(imageInfo.imageURL))
{
using (var fs = new FileStream(path, FileMode.CreateNew))
await response.Content.CopyToAsync(fs);
}
}
catch (Exception e)
{
Console.Error.WriteLine(e.Message);
return(UpdateResult.Error);
}
return(UpdateResult.ContentFound);
}