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 FBComments
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string link = "https://www.facebook.com/groups/";
            webBrowser1.Navigate(link + textBox1.Text + "/members/");
            timer1.Start();
        }
        public bool HHH = true;
        public List<string> IDs = new List<string>();
        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                if (HHH)
                {
                    var links = webBrowser1.Document.GetElementsByTagName("div");
                    foreach (HtmlElement link in links)
                    {
                        if (link.GetAttribute("className") == "clearfix _60rh _gse")
                        {
                            var Name = link.OuterHtml.Split(new[] { "aria-label" }, StringSplitOptions.None)[1];
                            var href = link.OuterHtml.Split(new[] { "id" }, StringSplitOptions.None)[1];
                            var GetIdPost = href.Split(new[] { "page_members_", "recently_joined_", "local_members_", "self_bio_", "admins_moderators_", "friends_", "things_in_common_" }, StringSplitOptions.None)[1];

                            string IDPost = GetIdPost.Substring(0, 16);
                            var IDSp = IDPost.Split(new[] { "\"" }, StringSplitOptions.RemoveEmptyEntries);
                            var Names = Name.Split(new[] { "\"" }, StringSplitOptions.RemoveEmptyEntries);
                            if (!IDs.Contains(IDSp[0]))
                            {
                                IDs.Add(IDSp[0]);
                                listBox2.Items.Add("" + IDSp[0] + " : " + Names[1]);
                                listBox2.SelectedItem = listBox2.Items[listBox2.Items.Count - 1];
                                label2.Text = "Member : " + IDs.Count;
                                pictureBox1.Visible = true;
                            }
                        }
                    }
                    if (this.webBrowser1.Document != null)
                    {
                        webBrowser1.Document.Window.ScrollTo(0, webBrowser1.Document.Window.Size.Height);
                    }
                }
                else timer1.Stop();
            }
            catch { timer1.Stop(); label2.Text = "Member : " + IDs.Count + " All Members"; }
        }
    }
}