2chBackAPI/BufferControllers/BufferFill.cs

using NeDvachAPI.DBControllers;
using NeDvachAPI.Models;

namespace NeDvachAPI.BufferControllers
{
    public class BufferFill
    {

        public static bool FillBuffer(string board) //method to get buffer of information, which is being ran while API is started
        {
            List<Post> Previews = DBchat.ThreadsList(board);
            APIThreadBuffer.WriteThreadPreviewsBuffer(Previews);
            Console.WriteLine("Adding OP-posts to buffer");

            for (int threadId = 1; threadId <= Previews.Count; threadId++)
            {
                APIThreadBuffer.AppendThreadsBuffer(DBchat.PostsList(board, threadId));         
            }
            Console.WriteLine($@"Buffering threads {1} to {Previews.Count}.");

            for (int preview = 0; preview < Previews.Count; preview++)
            {
                int targetLength = APIThreadBuffer.GetThreadLength(preview);
                for (int lastofthree =  targetLength- 2; lastofthree <=  targetLength; lastofthree ++)
                {
                    APIThreadBuffer.AppendToThreadPreviews(preview,APIThreadBuffer.GetSinglePost(preview,lastofthree));
                }
            }

            return true;
        }
    }
}