using RandomFileRunner.IO;
using RyzStudio.Windows.Forms;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace RandomFileRunner
{
    public partial class MainForm : Form
    {
        protected readonly Random randy;

        protected OptionsForm optionsForm = null;
        protected bool isBusy = false;
        protected bool requestCancel = false;

        protected List<string> foundFiles = null;
        protected Process currentProcess = null;


        public MainForm()
        {
            InitializeComponent();

            textBox1.Text = "*.*";
            memoBox1.InnerTextBox.WordWrap = false;

            randy = new Random();
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            if (this.IsBusy)
            {
                e.Cancel = true;
                return;
            }

            base.OnFormClosing(e);
        }


        public bool IsBusy
        {
            get => isBusy;
            set
            {
                isBusy = value;

                ThreadControl.SetValue(pictureBox1, (isBusy ? AppResource.loading_block : null));
                ThreadControl.SetEnable(textBox1, !isBusy);
                //ThreadControl.SetEnable(button2, !isBusy);
                button2.LabelText = (isBusy? "&Cancel" : "&Search");
                ThreadControl.SetEnable(button3, !isBusy);
                ThreadControl.SetEnable(button4, !isBusy);
                ThreadControl.SetEnable(memoBox1, !isBusy);
                ThreadControl.SetEnable(button5, !isBusy);
                //ThreadControl.SetEnable(button1, !isBusy);
            }
        }


        public AppSession CurrentSession { get; set; } = new AppSession();


        protected void AddSearchItem(string line)
        {
            memoBox1.Text = memoBox1.Text.Trim();

            // above line-break
            if (!string.IsNullOrWhiteSpace(memoBox1.Text)) memoBox1.Text += Environment.NewLine;

            memoBox1.Text += line + Environment.NewLine;
        }

        protected bool SearchDirecory_OnFound(string file, ulong searchCount, int searchQueue)
        {
            if (!string.IsNullOrWhiteSpace(file))
            {
                foundFiles.Add(file);
            }

            //ThreadControl.SetText(label2, foundFiles.Count.ToString());
            ThreadControl.SetText(label2, foundFiles.Count.ToString("#,#", System.Globalization.CultureInfo.CurrentCulture) + Environment.NewLine + searchQueue.ToString("#,#", System.Globalization.CultureInfo.CurrentCulture));

            return true;
        }


        /// <summary>
        /// Search
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void button2_MouseClick(object sender, MouseEventArgs e)
        {
            await Task.Run(() =>
            {
                if (this.IsBusy)
                {
                    requestCancel = true;
                    button2.LabelText = "&Cancelling...";

                    return;
                }

                this.IsBusy = true;
                requestCancel = false;

                foundFiles = new List<string>();
                currentProcess = null;

                string[] itemList = memoBox1.Text?.Trim().Split('\n');
                for (int i=0; i< itemList.Length; i++)
                {
                    if (string.IsNullOrWhiteSpace(itemList[i])) continue;
                    if (requestCancel) break;

                    string item = itemList[i]?.Trim();

                    if (File.Exists(item))
                    {
                        if (SmartFileSystem.IsFileAccessible(item))
                        {
                            foundFiles.Add(item);
                            ThreadControl.SetText(label2, foundFiles.Count.ToString());

                            continue;
                        }
                    }

                    if (Directory.Exists(item))
                    {
                        SmartFileSystem.GetFiles(item, "*.txt", SearchDirecory_OnFound);

                        ThreadControl.SetText(label2, foundFiles.Count.ToString());

                        continue;
                    }
                }

                ThreadControl.SetText(label2, foundFiles.Count.ToString("#,#", System.Globalization.CultureInfo.CurrentCulture) + " File" + ((foundFiles.Count == 1) ? "" : "s") + " Found");

                this.IsBusy = false;
                requestCancel = false;
            });
        }

        /// <summary>
        /// Add directory
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void addDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (this.IsBusy) return;

            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                AddSearchItem(folderBrowserDialog1.SelectedPath);
            }
        }

        /// <summary>
        /// Add file
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void addFileToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (this.IsBusy) return;

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                AddSearchItem(openFileDialog1.FileName);
            }
        }

        /// <summary>
        ///  Clear
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button4_MouseClick(object sender, MouseEventArgs e)
        {
            if (this.IsBusy) return;

            memoBox1.Text = string.Empty;
        }

        private void memoBox1_DragOver(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                if (this.IsBusy)
                {
                    e.Effect = DragDropEffects.None;
                }
                else
                {
                    e.Effect = DragDropEffects.Copy;
                }
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }

        private void memoBox1_DragDrop(object sender, DragEventArgs e)
        {
            if (this.IsBusy) return;

            string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
            if (fileList == null)
            {
                return;
            }

            foreach (string item in fileList)
            {
                AddSearchItem(item);
            }
        }

        /// <summary>
        /// Run next
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button5_MouseClick(object sender, MouseEventArgs e)
        {

        }

        /// <summary>
        /// Close
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_MouseClick(object sender, MouseEventArgs e)
        {
            this.Close();
        }


    }
}