using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Reddit_03
{
    public partial class Form1 : Form
    {
        public static int QUERY_TITLE_LENGTH = 30;

        public Form1()
        {
            InitializeComponent();

            Classes.ReadInputFiles();

            foreach (Classes.Subreddit i in Classes.subs)
            {
                Subs_ComboBox.Items.Add(i.Name);
            }

            /*
            foreach (Classes.User i in Classes.users)
            {
                User_ComboBox.Items.Add(i.Name);
            }
            */
        }

        public string Dashes()
        {
            StringBuilder result = new StringBuilder();

            for (uint i = 0; i < 50; i++)
                result.Append("-");
            return result.ToString();
        }

        public void END_OF_OUTPUT()
        {
            System_Output.AppendText("\n\n***** END OF QUERY RESULTS *****\n");
        }

        private void Query4_Click(object sender, EventArgs e)
        {
            if (Subs_ComboBox.SelectedIndex == -1) // That is: no selection has been made
            {
                System_Output.Text = "Please select a Subreddit to list Posts from.";
                return;
            }
            // else, we can begin working

            if (Subs_ComboBox.SelectedIndex == 0) // The user has selected the r/all subreddit
            {
                var AllPostsQuery =
                    from N in Classes.subs
                    from M in N.SubPosts
                    where M.Score < 0
                    select M;

                System_Output.Text = "";
                if (AllPostsQuery.Count() == 0)
                {
                    System_Output.Text = "Wow, such empty!";
                    return;
                }

                foreach (Classes.Post i in AllPostsQuery)
                {
                    System_Output.AppendText(i.ToString("ListBox") + "\n");
                }
                END_OF_OUTPUT();

                return;
            }


            var PrintPostsQuery =
                from N in Classes.subs
                where N.Name.CompareTo(Subs_ComboBox.SelectedItem.ToString()) == 0
                from M in N.SubPosts
                where M.Score < 0
                select M;

            System_Output.Text = "";
            if (PrintPostsQuery.Count() == 0)
            {
                System_Output.Text = "Wow, such empty!";
                return;
            }

            foreach (Classes.Post i in PrintPostsQuery)
            {
                System_Output.AppendText(i.ToString("ListBox") + "\n");
            }

            /*
            foreach (Classes.Subreddit i in PrintPostsQuery)
            {
                foreach (Classes.Post j in i)
                {
                    System_Output.AppendText(j.ToString("ListBox") + "\n");
                }
            }
            */
            END_OF_OUTPUT();
        }
    }
}