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

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

        public bool stop = false;
        public Process running = new Process();

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void btnSearchIn_Click(object sender, EventArgs e)
        {
            DialogResult result = fbdInput.ShowDialog();
            if (result == DialogResult.OK)
            {
                string[] files = Directory.GetFiles(fbdInput.SelectedPath);
                tbInput.Text = fbdInput.SelectedPath;
                int num = files.Length;

                lbFiles.Items.Clear();
                foreach (string file in files)
                {
                    lbFiles.Items.Add(file.Replace(fbdInput.SelectedPath + @"\", ""));

                }
            }
        }

        private void btnRemove_Click(object sender, EventArgs e)
        {
            lbFiles.Items.RemoveAt(lbFiles.SelectedIndex);
        }

        private void btnFilter_Click(object sender, EventArgs e)
        {
            List<string> list = new List<string>();
            foreach (string file in lbFiles.Items)
            {
                list.Add(file);
            }
            int i = 0;
            foreach (string file in list)
            {
                if (!file.EndsWith(tbFilter.Text))
                {
                    lbFiles.Items.RemoveAt(i);
                    continue;
                }
                i++;
            }
        }

        private void tbFilter_TextChanged(object sender, EventArgs e)
        {

        }

        private void btnReload_Click(object sender, EventArgs e)
        {
            if (!tbInput.Text.Equals(""))
            {
                string[] files = Directory.GetFiles(fbdInput.SelectedPath);
                tbInput.Text = fbdInput.SelectedPath;
                int num = files.Length;

                lbFiles.Items.Clear();
                foreach (string file in files)
                {
                    lbFiles.Items.Add(file.Replace(fbdInput.SelectedPath + @"\", ""));

                }
            }
        }

        private void generate(string file_loc, string file, string output_name, string output_loc)
        {

            int v = 0;
            int a = 0;
            int vert = 0;
            int h = 0;
            int t = 0;
            this.Invoke(new Action(() => {
                v = (int)numVbitrate.Value;
                a = (int)numAbitrate.Value;
                vert = (int)numVertbitrate.Value;
                h = (int)numHbitrate.Value;
                t = (int)numThreads.Value;
            }));
            Process p = new Process();
            ProcessStartInfo startInfo = new ProcessStartInfo();
            startInfo.FileName = "cmd.exe";
            string arg = @"ffmpeg ";
            arg += @"-i """ + file_loc +@"\" + file + @""" ";
            if (vert != 0 || h != 0)
            {
                arg += @"-vf scale=" + h + ":" + vert + @" ";
            }
            if (v != 0 || a != 0)
            {
                arg += @"-b:v " + v + "k ";
            }
            arg += @"""" + output_loc + @"\" + output_name + @"""";
            if (t != 0)
            {
                arg += " -threads " + t + " ";
            }
            //MessageBox.Show(arg);
            startInfo.Arguments = @"/c " + arg;
            p.StartInfo = startInfo;
            p.Start();
            running = p;
            p.WaitForExit();
        }

        private void btn_Click(object sender, EventArgs e)
        {
            stop = false;
            foreach (object l in lbFiles.Items)
            {
                Thread d = new Thread(() => generate(tbInput.Text, l.ToString(), l.ToString(), tbOutput.Text));
                d.Start();
                tbStatus.Text += l.ToString() + " is now being processed." + Environment.NewLine + tbStatus.Text;
                do {
                    if (stop)
                    {
                        running.Close();
                        d.Abort();
                        tbStatus.Text = "The process has been interrupted!" + Environment.NewLine + tbStatus.Text;
                        MessageBox.Show("You will need to close any command prompts related to this program");
                        return;
                    }
                    wait(1000);
                } while (d.IsAlive);

                tbStatus.Text = l.ToString() + " has finished being processed." + Environment.NewLine + tbStatus.Text;
            }

        }

        public static void wait(int milliseconds)
        {
            System.Windows.Forms.Timer timer1 = new System.Windows.Forms.Timer();
            if (milliseconds == 0 || milliseconds < 0) return;
            timer1.Interval = milliseconds;
            timer1.Enabled = true;
            timer1.Start();
            timer1.Tick += (s, e) =>
            {
                timer1.Enabled = false;
                timer1.Stop();
            };
            while (timer1.Enabled)
            {
                Application.DoEvents();
            }
        }

        private void btnSearchOut_Click(object sender, EventArgs e)
        {
            DialogResult result = fbdOutput.ShowDialog();
            if (result == DialogResult.OK)
            {
                string[] files = Directory.GetFiles(fbdOutput.SelectedPath);
                tbOutput.Text = fbdOutput.SelectedPath;
            }
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            stop = true;
        }
    }

}