public static string ToUrlPartString(this RedditCategory category)
{
switch (category)
{
case RedditCategory.Controversial:
return("controversial");
case RedditCategory.Gilded:
return("gilded");
case RedditCategory.Hot:
return("hot");
case RedditCategory.New:
return("new");
case RedditCategory.Rising:
return("rising");
case RedditCategory.Top:
return("top");
}
throw new ArgumentException("Unknown reddit category", nameof(category));
}
private async Task RedditPost(CommandContext ctx, string query, RedditCategory category)
{
if (!BotServices.CheckUserInput(query))
{
return;
}
var results = RedditService.GetEmbeddedResults(query, category);
await ctx.RespondAsync("Search results for r/" + query, embed : results).ConfigureAwait(false);
}
private static string GetPostCategory(this RedditCategory category)
{
return(category switch
{
RedditCategory.Hot => "hot",
RedditCategory.New => "new",
RedditCategory.Top => "top",
_ => throw new ArgumentException(Resources.ERR_REDDIT_UNKNOWN, nameof(category))
});
public static string GetPostCategory(this RedditCategory category)
{
switch (category)
{
case RedditCategory.Hot: return("hot");
case RedditCategory.New: return("new");
case RedditCategory.Top: return("top");
}
throw new ArgumentException("Unknown reddit category", nameof(category));
}
private static List <SyndicationItem> GetResults(string query, RedditCategory category)
{
try
{
query = $"https://www.reddit.com/r/{query.ToLowerInvariant()}/{GetPostCategory(category)}.rss";
using var reader = XmlReader.Create(query);
return(SyndicationFeed.Load(reader).Items?.ToList());
}
catch
{
return(null);
}
}
public static List <SyndicationItem> GetResults(string query, RedditCategory category)
{
try
{
query = string.Format(Resources.URL_Reddit, query.ToLowerInvariant(), GetPostCategory(category));
using var reader = XmlReader.Create(query);
return(SyndicationFeed.Load(reader).Items?.ToList());
}
catch
{
return(null);
}
}
private static async Task RedditPost(CommandContext ctx, string query, RedditCategory category)
{
if (string.IsNullOrWhiteSpace(query))
{
return;
}
await ctx.TriggerTypingAsync();
var results = RedditService.GetResults(query, category);
if (results is null || results.Count == 0)
{
await BotServices.SendResponseAsync(ctx, Resources.NOT_FOUND_COMMON, ResponseType.Missing)
.ConfigureAwait(false);
return;
}
while (results.Count > 0)
{
var output = new DiscordEmbedBuilder()
.WithFooter("Type 'next' within 10 seconds for the next five posts.")
.WithColor(new DiscordColor("#FF4500"));
foreach (var result in results.Take(5))
{
output.AddField(result.Authors.FirstOrDefault()?.Name,
$"[{(result.Title.Text.Length < 500 ? result.Title.Text : result.Title.Text.Take(500) + "...")}]({result.Links.First().Uri})");
results.Remove(result);
}
var message = await ctx.RespondAsync("Search results for r/" + query + " on Reddit", output)
.ConfigureAwait(false);
if (results.Count == 5)
{
continue;
}
var interactivity = await BotServices.GetUserInteractivity(ctx, "next", 10).ConfigureAwait(false);
if (interactivity.Result is null)
{
break;
}
await BotServices.RemoveMessage(interactivity.Result).ConfigureAwait(false);
await BotServices.RemoveMessage(message).ConfigureAwait(false);
}
}
private Task SearchAndSendResultsAsync(CommandContext ctx, string sub, RedditCategory category)
{
if (string.IsNullOrWhiteSpace(sub))
{
throw new InvalidCommandUsageException(ctx, "cmd-err-sub-none");
}
string?url = RedditService.GetFeedURLForSubreddit(sub, category, out string?rsub);
if (url is null || rsub is null)
{
if (rsub is null)
{
throw new CommandFailedException(ctx, "cmd-err-sub-format");
}
else
{
throw new CommandFailedException(ctx, "cmd-err-sub-404", rsub);
}
}
IReadOnlyList <SyndicationItem>?res = RssFeedsService.GetFeedResults(url);
if (res is null)
{
throw new CommandFailedException(ctx, "cmd-err-sub-fail", rsub);
}
if (!res.Any())
{
return(ctx.FailAsync("cmd-err-res-none"));
}
return(ctx.PaginateAsync(res, (emb, r) => {
emb.WithTitle(r.Title.Text);
emb.WithDescription(r.Summary, unknown: false);
emb.WithUrl(r.Links.First().Uri);
if (r.Content is TextSyndicationContent content)
{
string?url = RedditService.GetImageUrl(content);
if (url is { })
{
emb.WithImageUrl(url);
}
}
private async Task SearchAndSendResultsAsync(CommandContext ctx, string sub, RedditCategory category)
{
string url = RedditService.GetFeedUrlForSubreddit(sub, category, out string rsub);
if (url is null)
{
throw new CommandFailedException("That subreddit doesn't exist.");
}
var res = RssService.GetFeedResults(url);
if (res is null)
{
throw new CommandFailedException($"Failed to get the data from that subreddit ({Formatter.Bold(rsub)}).");
}
await RssService.SendFeedResultsAsync(ctx.Channel, res);
}
public static string?GetFeedURLForSubreddit(string sub, RedditCategory category, out string?rsub)
{
rsub = null;
if (string.IsNullOrWhiteSpace(sub))
{
return(null);
}
if (_sanitizeRegex.IsMatch(sub))
{
return(null);
}
sub = _subPrefixRegex.Replace(sub, string.Empty);
rsub = "/r/" + sub.ToLowerInvariant();
string url = $"https://www.reddit.com{rsub}/{category.Humanize(LetterCasing.LowerCase)}.rss";
return(RssFeedsService.IsValidFeedURL(url) ? url : null);
}
public static string GetFeedURLForSubreddit(string sub, RedditCategory category, out string rsub)
{
if (string.IsNullOrWhiteSpace(sub))
{
throw new ArgumentException("Subreddit missing", nameof(sub));
}
if (_sanitizeRegex.IsMatch(sub))
{
throw new ArgumentException("Subreddit is in invalid format (needs to be lowercase and without spaces, for example `/r/rule34`)", nameof(sub));
}
sub = _subPrefixRegex.Replace(sub, string.Empty);
rsub = "/r/" + sub.ToLowerInvariant();
string url = $"https://www.reddit.com{rsub}/{category.ToUrlPartString()}.rss";
if (!RssService.IsValidFeedURL(url))
{
return(null);
}
return(url);
}
public static DiscordEmbed GetEmbeddedResults(string query, RedditCategory category = RedditCategory.Hot)
{
var results = GetResults(query, category);
if (results is null || results.Count == 0)
{
return new DiscordEmbedBuilder
{
Description = ":warning: No results found!",
Color = new DiscordColor("#FF4500")
}
}
;
results = (results.Count > 5) ? results.Take(5).ToList() : results;
var output = new DiscordEmbedBuilder {
Color = new DiscordColor("#FF4500")
};
foreach (var result in results)
{
output.AddField(result.Title.Text.Length < 500 ? result.Title.Text : result.Title.Text.Take(500) + "...", result.Links.First().Uri.ToString());
}
return(output.Build());
}
