private static IEnumerable <MLSankakuPost> GetPosts(long userId)
{
var outPosts = new List <MLSankakuPost>();
var context = new DiscordContext();
var allTags = context.SankakuTag.ToArray();
outPosts.Add(new MLSankakuPost()
{
Tags = 0,
UserScore = 0
});
outPosts.Add(new MLSankakuPost()
{
Tags = 1,
UserScore = 1
});
outPosts.Add(new MLSankakuPost()
{
Tags = 1,
UserScore = 1
});
outPosts.Add(new MLSankakuPost()
{
Tags = 0,
UserScore = 0
});
return(outPosts);
foreach (var vote in context.SankakuImageVote.Where(indVote => indVote.UserId == userId))
{
MLSankakuPost post = new MLSankakuPost();
var tags = context.SankakuImageTag.Where(imageTag => imageTag.ImageId == vote.ImageId)
.Select(tag => tag.TagId).ToArray();
var image = context.SankakuImage.Find(vote.ImageId);
//post.Tags = new float[allTags.Length];
int cIndex = 0;
foreach (var generalTag in allTags)
{
if (tags.Contains(generalTag.Id))
{
//post.Tags[cIndex] = 1;
}
else
{
//post.Tags[cIndex] = 0;
}
}
post.UserScore = vote.VoteValue;
post.imgRating = vote.Image.Rating;
post.score = Convert.ToSingle(image.Score);
outPosts.Add(post);
}
return(outPosts);
}
public static async Task PostPrediction(long userId, DiscordChannel channel)
{
var context = new DiscordContext();
SankakuImage imgToPost = null;
Random rnd = new Random();
var channelIDLong = Convert.ToInt64(channel.Id);
var blacklistedTags =
await context.SankakuTagBlacklist.Where(blackTag => blackTag.ChannelId == channelIDLong).Select(tag => tag.TagId).ToListAsync();
var startDate = DateTime.Now - TimeSpan.FromDays(90);
var trainedModel = Train(userId);
int skip = 0;
while (imgToPost == null)
{
//imgToPost = context.SankakuImage.Where(si => si.SankakuPost.Count == 0).Skip(skip).First();
imgToPost = context.SankakuImage.Find(88415l);
if (imgToPost == null)
{
await ScrapeNewest();
}
List <MLSankakuPost> posts = new List <MLSankakuPost>();
MLSankakuPost mlPost = new MLSankakuPost()
{
//imgRating = imgToPost.Rating,
//score = Convert.ToSingle(imgToPost.Score),
//Tags = context.SankakuImageTag.Where(imageTag => imageTag.ImageId == imgToPost.Id).Select(tag => Convert.ToSingle(tag.TagId)).ToArray(),
Tags = 1,
};
posts.Add(mlPost);
var prediction = trainedModel.Predict(posts, true);
if (prediction.First().Score < 1)
{
skip++;
imgToPost = null;
}
}
DiscordEmbedBuilder builder = new DiscordEmbedBuilder()
{
Color = DiscordColor.Orange,
Title = context.Puns.Skip(new Random().Next(context.Puns.Count() - 1)).First().Text
};
var link = HttpUtility.HtmlDecode(await GetOriginalImageLink(imgToPost.Id));
var request = Helpers.CreateRequestWithHeaders(link);
var response = request.GetResponse();
SKImage img = SKImage.FromEncodedData(response.GetResponseStream());
if (img.ColorType == SKColorType.Bgra8888)
{
//Bgra8888 needs an indexed Colortable, so convert it to Rgba8888 first
var bitmap = new SKBitmap(new SKImageInfo(img.Width, img.Height, SKColorType.Rgba8888));
var canvas = new SKCanvas(bitmap);
canvas.DrawImage(img, 0, 0, null);
canvas.Flush();
img = SKImage.FromBitmap(bitmap);
}
var imageData = img.Encode(SKEncodedImageFormat.Jpeg, 75); //Encode in Jpeg instead of Webp because of IOS
using (var outStream = imageData.AsStream())
{
var msg = await channel.SendFileAsync(outStream, builder.Title + ".jpeg",
embed : builder.Build());
context.SankakuPost.Add(new Models.SankakuPost()
{
Date = DateTime.Now,
Image = imgToPost,
MessageId = Convert.ToInt64(msg.Id)
});
await context.SaveChangesAsync();
}
}
