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

namespace CrashDumpSender
{
    public partial class PreviewForm : Form
    {
        public PreviewForm(CrashDumpSenderForm parentForm)
        {
            InitializeComponent();

            parent = parentForm;
        }

        int currentIndex = 0;
        string screen_directory = "";
        int frameCount = 0;

        CrashDumpSenderForm parent = null;
        
        public class FrameRange
        {
            public int Start = 0;
            public int End   = 0;
        };

        FrameRange frameRange = new FrameRange();

        public string generateName(int index)
        {
            string key = String.Format("{0:00000000}", index);
            string res = screen_directory + @"/screenITF" + key + ".jpg";
            return res;
        }

        public void init(string fileSrc,string soundFile)
        {
            screen_directory = Path.GetDirectoryName(fileSrc);
            
            //get all the files in this directory
            //...
            DirectoryInfo di = new DirectoryInfo(screen_directory);
            FileInfo[] rgFiles = di.GetFiles("*.jpg");

            frameCount = rgFiles.Length;
            
            trackBarFrame.Maximum = frameCount-1;

            frameRange.Start  = 0;
            frameRange.End    = trackBarFrame.Maximum;

            updateInfos();
            updateFrameRange();

            previewJpg.ImageLocation = generateName(0);


            float videoLength = ((1000.0f / 30.0f) * frameCount)/1000.0f;
            labelVideoLength.Text = "Video Length: " + videoLength.ToString();

            
            if (File.Exists(soundFile))
            {
                WaveFileReader file = new WaveFileReader(soundFile);
                file.read();

                labelSoundLength.Text = "Sound Length: " + file.m_data.dSecLength.ToString();
                file = null;
            }
        }

        public void next()
        {
            currentIndex++;
        }

        private void updateInfos()
        {
            previewJpg.ImageLocation = generateName(currentIndex);
            int frameCountMax = frameCount-1;
            lblCurrentFrame.Text = currentIndex.ToString() + "/" + frameCountMax.ToString();
        }


        private void updateFrameRange()
        {
            textBoxFrameStart.Text  = frameRange.Start.ToString();
            textBoxFrameEnd.Text    = frameRange.End.ToString();
        }

        private void btnNextFrame_Click(object sender, EventArgs e)
        {
            next();
            updateInfos();
        }

        private void textBoxSelectFrame_TextChanged(object sender, EventArgs e)
        {
            int index = 0;
            
            try
            {
                index = int.Parse(textBoxSelectFrame.Text);
            }
            catch (System.Exception )
            {
            	
            }
            

            if (index>=0 && index<=frameCount)
            {
                currentIndex = index;
                updateInfos();
            }
            
        }

        private void trackBarFrame_Scroll(object sender, EventArgs e)
        {
            int index = trackBarFrame.Value;
            currentIndex = index;
            updateInfos();
        }

        private void PreviewForm_KeyUp(object sender, KeyEventArgs e)
        {
        }

        private void PreviewForm_KeyPress(object sender, KeyPressEventArgs e)
        {

            if (e.KeyChar == '+')
            {
                next();
                updateInfos();
                trackBarFrame.Value = currentIndex;
            }
        }

        private void btnSaveAsStart_Click(object sender, EventArgs e)
        {
            frameRange.Start = currentIndex;
            updateFrameRange();
        }

        private void btnSaveAsEnd_Click(object sender, EventArgs e)
        {
            if (currentIndex<frameRange.Start)
            {
                MessageBox.Show("End frame must be higher than the start frame");
                return;
            }

            frameRange.End = currentIndex;
            updateFrameRange();
        }

        private void btnEncode_Click(object sender, EventArgs e)
        {
            parent.encodeMovie(frameRange.Start, frameRange.End, frameCount);
        }

        private void textBoxFrameStart_TextChanged(object sender, EventArgs e)
        {
            try
            {
                frameRange.Start = int.Parse(textBoxFrameStart.Text);
            }
            catch (System.Exception)
            {
                frameRange.Start = 0;
                textBoxFrameStart.Text = "0";
            }
            
        }

        private void textBoxFrameEnd_TextChanged(object sender, EventArgs e)
        {
            try
            {
                frameRange.End = int.Parse(textBoxFrameEnd.Text);
            }
            catch (System.Exception)
            {
                frameRange.End = frameCount-1;
                textBoxFrameEnd.Text = frameRange.End.ToString();
            }
            
        }

        private void PreviewForm_Load(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void startFrame_Click(object sender, EventArgs e)
        {

        }

    }
}