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
    {
        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, new EventHandler<LoggerOnFlushEventArgs>(Log_OnFlush));
        }

        StringBuilder log_flusher = new StringBuilder();
        bool HAVE_CR = false;
        void Log_OnFlush(object sender, LoggerOnFlushEventArgs e)
        {
            
            log_flusher.Append(e.Buffer);
            if (IsUnix)
            {
                if (e.Buffer == System.Environment.NewLine[0])
                {
                    OnLogFlush(log_flusher.ToString());
                    log_flusher = new StringBuilder();
                }
            }
            else
            {                
                if (e.Buffer == System.Environment.NewLine[0])
                {
                    HAVE_CR = true;
                }
                if (e.Buffer == System.Environment.NewLine[1] && HAVE_CR)
                {
                    OnLogFlush(log_flusher.ToString().TrimStart(new char[] { System.Environment.NewLine[1] }));
                    log_flusher = new StringBuilder();
                    HAVE_CR = false;
                }
            }
            
        }

        void OnLogFlush(string logmessage)
        {
            Console.Write(logmessage);        
            txtStatus.Text = logmessage.Replace(System.Environment.NewLine, "");
            Thread.Sleep(100);
        }

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

        private void main_Load(object sender, EventArgs e)
        {

        }
        private void main_Shown(object sender, EventArgs e)
        {
            //libxmltv.Core.XMLTV
            
        }


        void LoadXMLTVShcedule(string schedule_xml)
        {
            //var xmltv_loader = XMLTV.CreateLoader(schedule_xml);
            //var xmltv_parser = XMLTV.CreateParser(xmltv_loader);
            //var p = XMLTV.GetParser(xmltv_parser);

            ////var channel_count = p.Channels.Values.Count;
            ////Channels = p.Channels.Values.ToList().GetRange(0, channel_count).ToList();
            //var program_count = p.Programs.Values.Count;
            //var program_list = p.Programs.Values.ToList().OrderBy(s => s.Start);
            ////Programs = program_list(0, program_count).ToList();
            //Programs = new List<IXMLTVProgram>(program_list.ToArray());

            xmltv = XMLTV.CreateInstance(schedule_xml);
            var program_count = xmltv.Programs.Values.Count;
            var program_list = xmltv.Programs.Values.ToList().OrderBy(s => s.Start);
            //Programs = program_list(0, program_count).ToList();
            Programs = new List<IXMLTVProgram>(program_list.ToArray());
        }

        void CreateControls()
        {
            foreach (var program in Programs)
            {
                ListViewItem li = new ListViewItem(string.Format("{0} {1}", program.Channel.Number, program.Channel.CallSign));
                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);
            }
        }

        private void mnuItemOpenXMLTVFile_Click(object sender, EventArgs e)
        {
            //LoadXMLTVShcedule("20130307_continuum_schedule.xml");
            var result = xmltv_file_chooser.ShowDialog();
            if (result != DialogResult.OK) return;
            LoadXMLTVShcedule(xmltv_file_chooser.FileName);
            CreateControls();
        }

        private void mnuItemOpenSavedData_Click(object sender, EventArgs e)
        {
            var result = xmltv_program_data_loader.ShowDialog();
            if (result != DialogResult.OK) return;
            try
            {
                using (Stream stream = File.Open(xmltv_program_data_loader.FileName, FileMode.Open))
                {
                    try
                    {
                        BinaryFormatter bin = new BinaryFormatter();
                        Programs = (List<IXMLTVProgram>)bin.Deserialize(stream);
                    }
                    catch (Exception ex) { gLog.Log.Error.WriteLine(ex.ToString()); MessageBox.Show(ex.Message, "Failed to load data", MessageBoxButtons.OK, MessageBoxIcon.Error); return; }
                }
            }
            catch (Exception ex) { gLog.Log.Error.WriteLine(ex.ToString()); MessageBox.Show(ex.Message, "Failed to load data", MessageBoxButtons.OK, MessageBoxIcon.Error); return; }
            MessageBox.Show("Successfully loaded data", "Successfully loaded data", MessageBoxButtons.OK, MessageBoxIcon.Information); 
            CreateControls();
        }

        private void mnuItemSaveData_Click(object sender, EventArgs e)
        {
            var result = xmltv_program_data_saver.ShowDialog();
            if (result != DialogResult.OK) return;
            try
            {
                using (Stream stream = File.Open(xmltv_program_data_saver.FileName, FileMode.Create))
                {
                    try
                    {
                        BinaryFormatter bin = new BinaryFormatter();
                        bin.Serialize(stream, Programs);
                    }
                    catch (Exception ex) { gLog.Log.Error.WriteLine(ex.ToString()); MessageBox.Show(ex.Message, "Failed to save data", MessageBoxButtons.OK, MessageBoxIcon.Error); return; }
                }
            }
            catch (Exception ex) { gLog.Log.Error.WriteLine(ex.ToString()); MessageBox.Show(ex.Message, "Failed to save data", MessageBoxButtons.OK, MessageBoxIcon.Error); return; }
            MessageBox.Show("Successfully saved data", "Successfully saved data", MessageBoxButtons.OK, MessageBoxIcon.Information); 
        }

        private void main_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (xmltv != null)
            {
                xmltv.Dispose();
            }
        }
    }
}