public async Task SubRSS(CommandContext ctx)
{
await ctx.RespondAsync("Started");
var channels = await _service.GetGuildRssUrlsAsync(ctx.Guild);
foreach (var channel in channels)
{
try
{
await channel.SendMessageAsync($"Subscribed to {channel.Topic} at {DateTimeOffset.Now}");
}
catch
{
Console.Error.WriteLine("Exception messsage");
}
}
async void Callback(object?s)
{
foreach (var channel in channels)
{
try
{
Uri uri_parsed = new(channel.Topic);
var path = $"log_rss/{ctx.Guild.Id}_log_{uri_parsed.Host}.txt";
IEnumerable <SyndicationItem>?feed;
if (File.Exists(path))
{
var date = await File.ReadAllTextAsync(path);
feed = await _service.GetRssByUriLogAsync(uri_parsed.ToString(), DateTimeOffset.Parse(date),
path);
}
else
{
feed = await _service.GetRssByUriLogAsync(uri_parsed.ToString(),
DateTimeOffset.Now.Subtract(TimeSpan.FromDays(3)), path);
}
if (feed is null)
{
continue;
}
var homepage = $"https://{uri_parsed.Host}";
string favicon = await _service.FetchFaviconAsync(homepage) switch
{
{ } fav when Uri.IsWellFormedUriString(fav, UriKind.Absolute) => fav,
_ => ctx.Client.CurrentUser.GetAvatarUrl(ImageFormat.Auto),
};
var author = new DiscordEmbedBuilder.EmbedAuthor()
{
IconUrl = favicon,
Url = homepage,
Name = uri_parsed.Host.Substring(0, Math.Min(uri_parsed.Host.Length, 200))
};
foreach (var item in feed)
{
DiscordEmbedBuilder embed = new()
{
Title = item.Title?.Text.Substring(0, Math.Min(item.Title.Text.Length, 200)),
Url = item.Links?.FirstOrDefault()?.Uri.ToString() ?? homepage,
Description = new ReverseMarkdown.Converter().Convert(
item.Summary?.Text.Substring(0, Math.Min(item.Summary.Text.Length, 1000)) ??
String.Empty),
Footer = new DiscordEmbedBuilder.EmbedFooter()
{
Text = "RSS by Tomori"
},
Timestamp = DateTimeOffset.Now,
Author = author,
Color = Optional.FromValue <DiscordColor>(_random_color.Next(16777216)),
};
await channel.SendMessageAsync(embed : embed.Build());
}
}
catch (Exception e)
{
DiscordEmbedBuilder embed = new();
var built = embed.WithColor(new DiscordColor(255, 0, 0))
.WithAuthor(channel.Name, "https://image.prntscr.com/image/1tlt8aj7RY_ywP-OPPivyg.png")
.WithFooter("RSS by Tomori")
.WithTitle(e.Message)
.WithDescription(e.StackTrace)
.Build();
await ctx.RespondAsync(built);
}
}
}
_timers.Add(new Timer(Callback, null, TimeSpan.Zero, TimeSpan.FromMinutes(15)));
}