using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace SoundBoard
{
    class GenerateRandomPlayList
    {
        private Random randomNumber = new Random(); //Random number generator
        private string __workingDirectory = Path.GetDirectoryName(Application.ExecutablePath);

        public string[] SingleViewPlayList(List<List<String>> listViewContents, int iterations, int index)
        {
            string[] playList = new String[iterations];
            string tempFileName;
            int i = 0;
            int itemCount = listViewContents[index].Count - 1;  //Count is not zero index based

            do
            {
                tempFileName = listViewContents[index][randomNumber.Next(0, itemCount)];
                if (playList.Contains(tempFileName))
                {
                    playList[i] = listViewContents[index][randomNumber.Next(0, itemCount)];
                }
                else
                {
                    playList[i] = tempFileName;
                }
                i++;
            } while (i < iterations);
            return playList;
        }

        public string[] MulitViewPlayList(List<List<String>> listViewContents, int iterations)
        {
            string[] playList = new String[iterations];
            int zeroIndexCount = listViewContents[0].Count;
            int tabCount = listViewContents.Count;
            int itemCount;
            int i = 0;
            int temp;
            string tempFilePath;

            do
            {
                if (zeroIndexCount > 5)
                {
                    temp = randomNumber.Next(0, tabCount - 1);
                    itemCount = listViewContents[temp].Count - 1;   //Count is zero index based
                    tempFilePath = listViewContents[temp][randomNumber.Next(0, itemCount)];
                    if (playList.Contains(tempFilePath))
                    {
                        playList[i] = listViewContents[temp][randomNumber.Next(0, itemCount)];
                    }
                    else
                    {
                        playList[i] = tempFilePath;
                    }
                }
                else
                {
                    temp = randomNumber.Next(1, tabCount - 1);
                    itemCount = listViewContents[temp].Count - 1;   //Count is zero index based
                    tempFilePath = listViewContents[temp][randomNumber.Next(0, itemCount)];
                    if (playList.Contains(tempFilePath))
                    {
                        playList[i] = listViewContents[temp][randomNumber.Next(0, itemCount)];
                    }
                    else
                    {
                        playList[i] = tempFilePath;
                    }
                }
                i++;
            } while(i < iterations);

            return playList;
        }
    }
}