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

namespace AgraV2
{
    public partial class Form1 : Form
    {
        public DirectoryInfo selectedDirectory;
        public Bitmap selectedImage;
        public List<Effect> effects;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            effects = new List<Effect>();
            effects.Add(new EffectGrayScale("GrayScale", pnlEffectToolbox));
            effects.Add(new EffectMedianFilter("Median Filter", pnlEffectToolbox));
            RefreshUi();
        }
        private void RefreshUi()
        {
            Invalidate();
            pbxOriginal.Image = selectedImage;
            lsbEffects.DataSource = effects;
        }

        private void btnChangeFolder_Click(object sender, EventArgs e)
        {
            const int iconWidthRatio = 1;
            const int iconHeightRatio = 10;

            FolderBrowserDialog dialog = new FolderBrowserDialog();
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                selectedDirectory = new DirectoryInfo(dialog.SelectedPath);

                List<FileInfo> images = new List<FileInfo>();
                images.AddRange(selectedDirectory.GetFiles("*.png").ToList<FileInfo>());
                images.AddRange(selectedDirectory.GetFiles("*.jpg").ToList<FileInfo>());

                PictureBox genericPbx = new PictureBox();
                //The -pnlFiles/10 is only here to account for the scrollbar
                genericPbx.Size = new Size(pnlFiles.Width / iconWidthRatio - pnlFiles.Width / 10, pnlFiles.Height / iconHeightRatio);
                genericPbx.SizeMode = PictureBoxSizeMode.Zoom;

                int fileCount = 0;

                foreach (FileInfo file in images)
                {
                    string fullName = selectedDirectory.FullName + "\\" + file.Name;
                    PictureBox currentPbx = new PictureBox();
                    currentPbx.Size = genericPbx.Size;
                    currentPbx.SizeMode = genericPbx.SizeMode;
                    currentPbx.Click += Image_Click;
                    currentPbx.Location = new Point(0, fileCount * pnlFiles.Height / iconHeightRatio);
                    currentPbx.Name = fullName;
                    currentPbx.Image = Image.FromFile(fullName);

                    pnlFiles.Controls.Add(currentPbx);

                    fileCount++;
                }
            }
            else
            {
                MessageBox.Show("Ooops... Could not retrieve folder informations :(");
            }
            RefreshUi();
        }
        private void Image_Click(object sender, EventArgs e)
        {
            if (sender is PictureBox)
            {
                PictureBox pbx = sender as PictureBox;
                selectedImage = (Bitmap)Image.FromFile(pbx.Name);
            }
            RefreshUi();
        }
        private void btnApply_Click(object sender, EventArgs e)
        {
            if (lsbEffects.SelectedIndex >= 0)
            {
                Effect effect = effects[lsbEffects.SelectedIndex];
                Bitmap[] results = effect.apply((Bitmap)pbxOriginal.Image);
                if (results != null && results.Length > 0)
                {
                    if (results.Length == 3)
                    {
                        pbxResult1.Image = results[0];
                        pbxResult2.Image = results[1];
                        pbxResult3.Image = results[2];
                        if (effect.ProcessingDuration != null && effect.ProcessingDuration.Count > 0)
                        {
                            lblTimer1.Visible = lblTimer2.Visible = lblTimer3.Visible = true;
                            lblTimer1.Text = effect.ProcessingDuration[0] + "s";
                            lblTimer2.Text = effect.ProcessingDuration[1] + "s";
                            lblTimer3.Text = effect.ProcessingDuration[2] + "s";
                        }
                    }
                    else
                    {
                        pbxResult1.Image = results[0];
                        if (effect.ProcessingDuration != null && effect.ProcessingDuration.Count > 0)
                        {
                            lblTimer1.Visible = true;
                            lblTimer1.Text = effect.ProcessingDuration[0] + "s";
                        }
                    }
                }
            }
        }
        private void DownloadImage(Image image)
        {
            FolderBrowserDialog dialog = new FolderBrowserDialog();
            dialog.Description = "SaveImg";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                string path = dialog.SelectedPath;
                image.Save(path + "\\" + "ResultImage.png", System.Drawing.Imaging.ImageFormat.Png);
            }
        }
        private void btnDowload1_Click(object sender, EventArgs e)
        {
            DownloadImage(pbxResult1.Image);
        }
        private void btnDownload2_Click(object sender, EventArgs e)
        {
            DownloadImage(pbxResult2.Image);
        }

        private void btnDownload3_Click(object sender, EventArgs e)
        {
            DownloadImage(pbxResult3.Image);
        }

        private void lsbEffects_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (lsbEffects.SelectedIndex >= 0)
            {
                effects[lsbEffects.SelectedIndex].populatePannel();
            }   
        }
    }
}