public async Task <BindingStatus> AddBinding(string subredditName, IMessageChannel channel)
{
if (!(await httpClient.SendAsync(new HttpRequestMessage(HttpMethod.Head, subredditName))).IsSuccessStatusCode)
{
return(BindingStatus.Error);
}
using (var db = new RedditContext(dbOptions))
{
var subreddit = new RedditBinding
{
SubredditName = subredditName.ToLower(),
LatestPost = DateTime.UtcNow,
};
if (db.RedditChannelBindings.Any(b => b.ChannelId == channel.Id && b.Subreddit.SubredditName == subreddit.SubredditName))
{
return(BindingStatus.AlreadyExists);
}
db.RedditChannelBindings.Add(new RedditChannelBinding
{
Subreddit = subreddit,
ChannelId = channel.Id,
});
await db.SaveChangesAsync();
return(BindingStatus.Added);
}
}
public async Task <bool> RemoveBinding(IEntity <ulong> binding)
{
using (var db = new RedditContext(dbOptions))
{
var entities = db.RedditChannelBindings.Where(b => b.ChannelId == binding.Id);
if (!entities.Any())
{
return(false);
}
db.RedditChannelBindings.RemoveRange(entities);
await db.SaveChangesAsync();
return(true);
}
}
public async Task <bool> RemoveBinding(string subredditName, IMessageChannel channel)
{
using (var db = new RedditContext(dbOptions))
{
var name = subredditName.ToLower();
var found = await db.RedditChannelBindings.FirstOrDefaultAsync(b => b.ChannelId == channel.Id && b.Subreddit.SubredditName == name);
if (found == default(RedditChannelBinding))
{
return(false);
}
db.RedditChannelBindings.Remove(found);
await db.SaveChangesAsync();
return(true);
}
}
async Task ITimedService.Callback()
{
using (var db = new RedditContext(dbOptions))
{
foreach (var subreddit in db.RedditBindings.Include(b => b.ChannelBindings))
{
var responseText = await httpClient.HttpGet($"{subreddit.SubredditName}/new/.json");
if (responseText == null)
{
continue;
}
dynamic responseObject = JsonConvert.DeserializeObject(responseText);
dynamic posts = responseObject["data"]["children"];
var newestCreationTime = DateTimeOffset.FromUnixTimeSeconds((int)posts[0]["data"]["created_utc"]);
var postStack = new Stack <Embed>();
foreach (var post in posts)
{
var creationTime = DateTimeOffset.FromUnixTimeSeconds((int)post["data"]["created_utc"]);
if (creationTime <= subreddit.LatestPost)
{
break;
}
var title = WebUtility.HtmlDecode((string)post["data"]["title"]);
string username = post["data"]["author"];
string id = post["data"]["id"];
string url = post["data"]["url"];
string selftext = post["data"]["selftext"];
if (filterKeywords.Any(kw => title.ToLower().Contains(kw)))
{
continue;
}
var compact = compactKeywords.Any(kw => title.ToLower().Contains(kw));
string imageUrl = null;
try
{
imageUrl = post["data"]["preview"]["images"][0]["source"]["url"];
}
catch (Exception)
{
}
string thumbnailUrl = null;
if (post["data"]["thumbnail"] != "self" && post["data"]["thumbnail"] != "default")
{
thumbnailUrl = post["data"]["thumbnail"];
}
var embed = new EmbedBuilder()
.AddField(f => f.WithName("Title").WithValue(title))
.AddField(f => f.WithName("Submitted By").WithValue($"/u/{username}").WithIsInline(true))
.AddField(f => f.WithName("Subreddit").WithValue($"/r/{subreddit.SubredditName}").WithIsInline(true))
.AddField(f => f.WithName("Shortlink").WithValue($"http://redd.it/{id}").WithIsInline(true))
.WithColor(ModuleColor);
if (!url.Contains("reddit.com"))
{
embed.AddField(f => f.WithName("URL").WithValue(url));
}
if (!compact)
{
if (imageUrl != null)
{
embed.ImageUrl = imageUrl;
}
else if (thumbnailUrl != null)
{
embed.ThumbnailUrl = thumbnailUrl;
}
if (selftext != string.Empty)
{
embed.AddField(f => f.WithName("Text").WithValue(selftext.Truncate(500)));
}
}
if (!(compact || imageUrl == null))
{
try
{
var sauce = SauceModule.GetSauce(imageUrl);
if (sauce.SimilarityPercentage > 90)
{
postStack.Push(sauce.Embed);
}
}
catch (SauceModule.SauceNotFoundException sauceNotFoundException)
{
await Logging.LogError(sauceNotFoundException.ToString());
}
}
postStack.Push(embed.Build());
}
foreach (var embed in postStack)
{
foreach (var channelBinding in subreddit.ChannelBindings)
{
if (client.GetChannel(channelBinding.ChannelId) is IMessageChannel channel)
{
await channel.SendEmbedAsync(embed);
}
}
}
if (newestCreationTime > subreddit.LatestPost)
{
subreddit.LatestPost = newestCreationTime;
}
db.RedditBindings.Update(subreddit);
}
await db.SaveChangesAsync();
}
}