using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using libxmltv.Core;
using Enterprise.Logging;
using libxmltv.Interfaces;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;

namespace xmltv_parser
{

    public partial class main : Form
    {
        //bool form_closing = false;
        //private IXMLTVRuntimeInstance xmltv;
        private bool IsUnix
        {
            get { return System.Environment.OSVersion.Platform == PlatformID.Unix; }
        }

        public main()
        {
            InitializeComponent();
            string log_path = Application.StartupPath;
            string log_filename = string.Format("{0}.log", typeof(main).Assembly.GetName().Name);
            gLog.CreateLog(string.Format(@"{0}\{1}", log_path, log_filename), false, LogLevel.kLogLevel_All_NoProgress, new EventHandler<LoggerOnFlushEventArgs>(Log_OnFlush));
            gLog.SetLogLevel(gLog.LogLevel & ~LogLevel.kLogLevel_VerboseDebug);
            gLog.ReportProgressEvent += new EventHandler<ReportProgressEventArgs>(gLog_ReportProgress);
        }

        private void ReportProgress(int progress)
        {
            if (this.InvokeRequired)
            {
                try
                {
                    this.Invoke((Action)(delegate { ReportProgress(progress); }));
                }
                catch { }
                return;
            }
            progress_status.Value = progress;
        }
        private void gLog_ReportProgress(object sender, ReportProgressEventArgs e) { ReportProgress(e.Progress); }

        StringBuilder log_flusher = new StringBuilder();

        void Log_OnFlush(object sender, LoggerOnFlushEventArgs e)
        {
            OnLogFlush(e.Buffer);
        }
        //bool txtLog_EnterMouse = false;

        private void txtLog_MouseLeave(object sender, EventArgs e)
        {
            //txtLog_EnterMouse = false;
        }
        private void txtLog_MouseEnter(object sender, EventArgs e)
        {
            //txtLog_EnterMouse = true;
        }
        void OnLogFlush(string logmessage)
        {
            if (this.IsDisposed) { return; }
            UpdateStatus(logmessage);
            UpdateLogOutput(logmessage);
            Application.DoEvents();
        }

        void UpdateStatus(string logmessage)
        {
            txtStatus.Text = logmessage.Replace(System.Environment.NewLine, "");
        }
        void UpdateLogOutput(string logmessage)
        {
            if (txtLog.InvokeRequired)
            {
                try
                {
                    txtLog.Invoke((Action)(delegate { UpdateLogOutput(logmessage); }));
                }
                catch { }
                return;
            }
            txtLog.AppendText(logmessage);
            txtLog.SelectionStart = txtLog.Text.Length; //Set the current caret position to the end
            txtLog.ScrollToCaret(); //Now scroll it automatically
        }

        //List<IXMLTVChannel> Channels;
        List<IXMLTVProgram> Programs;

        private void main_Load(object sender, EventArgs e)
        {

        }
        private void main_Shown(object sender, EventArgs e)
        {

        }


        void LoadXMLTVShcedule(string schedule_xml)
        {
            //XMLTV.CreateInstance(schedule_xml, new EventHandler<CancelEventArgs>(xmltv_cancelevent));
            XMLTV.CreateInstance(schedule_xml);
            XMLTV.OnInstanceCreated += new EventHandler<EventArgs>(XMLTV_OnInstanceCreated);
        }

        void XMLTV_OnInstanceCreated(object sender, EventArgs e)
        {
            ReportProgress(0);
            var instance = XMLTV.GetInstance();
            if (instance != null)
            {
                var program_count = instance.Programs.Values.Count;
                var program_list = instance.Programs.Values.ToList().OrderBy(s => s.Start);
                //Programs = program_list(0, program_count).ToList();
                Programs = new List<IXMLTVProgram>(program_list.ToArray());
            }
            CreateControls();
        }


        //void xmltv_cancelevent(object sender, CancelEventArgs e)
        //{
        //    if (form_closing)
        //    {
        //        e.Cancel = true;
        //    }
        //}

        void CreateControls()
        {
            if (this.InvokeRequired)
            {
                this.Invoke((Action)(delegate { CreateControls(); }));
                return;
            }
            List<ListViewItem> items = new List<ListViewItem>();
            foreach (var program in Programs)
            {
                ListViewItem li = new ListViewItem(string.Format("{0} {1}", program.Channel.Number, program.Channel.CallSign));
                li.Tag = program;
                li.SubItems.Add(new ListViewItem.ListViewSubItem(li, program.Title));
                li.SubItems.Add(new ListViewItem.ListViewSubItem(li, program.SubTitle));
                li.SubItems.Add(new ListViewItem.ListViewSubItem(li, program.Description));
                li.SubItems.Add(new ListViewItem.ListViewSubItem(li, program.Start.ToString("yyyy/MM/dd hh:mm tt")));
                li.SubItems.Add(new ListViewItem.ListViewSubItem(li, program.Stop.ToString("yyyy/MM/dd hh:mm tt")));
                //lstPrograms.Items.Add(li);
                items.Add(li);
            }

            lstPrograms.Items.AddRange(items.ToArray());
        }

        private void mnuItemOpenXMLTVFile_Click(object sender, EventArgs e)
        {
            try
            {
                lstPrograms.Items.Clear();
                //LoadXMLTVShcedule("20130307_continuum_schedule.xml");
                var result = xmltv_file_chooser.ShowDialog();
                if (result != DialogResult.OK) return;
                ClearLocalLog();
                LoadXMLTVShcedule(xmltv_file_chooser.FileName);
                //CreateControls();
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }

        private void mnuItemOpenSavedData_Click(object sender, EventArgs e)
        {
            try
            {
                var result = xmltv_program_data_loader.ShowDialog();
                if (result != DialogResult.OK) return;
                string filename = xmltv_program_data_loader.FileName;
                IXMLTVRuntimeInstance xmltv = null;
                bool status = false;
                xmltv = XMLTV.DeSerialize(filename, out status);
                XMLTV.CreateFromInstance(xmltv, new EventHandler<EventArgs>(XMLTV_OnInstanceCreated));
                if (!status)
                {
                    MessageBox.Show("Failed to load data - check log", "Failed to load data", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
                MessageBox.Show("Successfully loaded data", "Successfully loaded data", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }

        private void mnuItemSaveData_Click(object sender, EventArgs e)
        {
            try
            {
                var result = xmltv_program_data_saver.ShowDialog();
                if (result != DialogResult.OK) return;
                string filename = xmltv_program_data_saver.FileName;
                if (!XMLTV.Serialize(filename))
                {
                    MessageBox.Show("Failed to save data - check log", "Failed to save data", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
                MessageBox.Show("Successfully saved data", "Successfully saved data", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }

        private void main_FormClosing(object sender, FormClosingEventArgs e)
        {
            try
            {
                XMLTV.DestroyInstance();
            }
            catch { }
        }

        private void mnuItemClearLocalLog_Click(object sender, EventArgs e)
        {
            ClearLocalLog();
        }
        private void ClearLocalLog()
        {
            var log_top_entry = txtLog.Lines.FirstOrDefault();
            txtLog.Clear();
            if (!string.IsNullOrEmpty(log_top_entry))
            {
                txtLog.AppendText(log_top_entry);
            }
        }

        private void mnuItemExit_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void lstPrograms_SelectedIndexChanged(object sender, EventArgs e)
        {
            IXMLTVProgram program = null;
            var item = lstPrograms.SelectedItems[0];
            int selected_index = lstPrograms.Items.IndexOf(item);
            program = (item.Tag as IXMLTVProgram);
            gLog.Debug.WriteLine("Selected ListViewItem at index: {0}", selected_index);
            if (program == null) { return; }
            txtStatus.Text = program.ToString();
            //gLog.Debug.WriteLine(program.ToString());

        }

        private void lstPrograms_ColumnClick(object sender, ColumnClickEventArgs e)
        {
            ListViewSorter Sorter = new ListViewSorter();
            lstPrograms.ListViewItemSorter = Sorter;
            if (!(lstPrograms.ListViewItemSorter is ListViewSorter))
                return;
            Sorter = (ListViewSorter)lstPrograms.ListViewItemSorter;

            //if (Sorter.LastSort == e.Column)
            //{
            //    if (lstPrograms.Sorting == SortOrder.Ascending)
            //        lstPrograms.Sorting = SortOrder.Descending;
            //    else
            //        lstPrograms.Sorting = SortOrder.Ascending;
            //}
            //else
            //{
            //    lstPrograms.Sorting = SortOrder.Descending;
            //}
            if (lstPrograms.Sorting == SortOrder.Ascending)
                lstPrograms.Sorting = SortOrder.Descending;
            else
                lstPrograms.Sorting = SortOrder.Ascending;
            Sorter.ByColumn = e.Column;

            lstPrograms.Sort();
        }
    }
}