#define OVERRIDE_COMMANDLINE_ARGUMENTS // when defined will override supplied commandline args
using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using Enterprise.Logging;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using libxmltv.Core;
using libxmltv.Interfaces;
using libxmltv;
namespace GBPVRProgramDatabaseFixer
{
    class Program
    {
        static ISQLLITE sqlite;
        static string XMLTV_FILE = "";
        static string GBPVR_DATABASE = "";

        //static bool LOADING_XMLTV_FILE = false;
        static bool XMLTV_INSTANCE_CREATED = false;
        //static int LAST_REPORTED_XMLTV_PROGRESS = 0;


        //static bool LOADING_GBPVR_DATABASE = false;
        static bool SQLLIST_INSTANCE_CREATED = false;
        //static int LAST_REPORTED_SQLLITE_PROGRESS = 0;

        static int LAST_REPORTED_PROGRESS = 0;

        static FileInfo fi_XMLTVFILE;
        static FileInfo fi_GBPVRDATABASE;
        static void CreateLog()
        {
            string log_path = Application.StartupPath;
            string log_filename = string.Format("{0}.log", typeof(Program).Assembly.GetName().Name);
            gLog.CreateLog(string.Format(@"{0}\{1}", log_path, log_filename), false, LogLevel.kLogLevel_All);
#if DEBUG
            LogLevel gLevel = gLog.LogLevel;
            gLevel |= LogLevel.kLogLevel_VerboseDebug;
            gLevel |= LogLevel.kLogLevel_Debug;
            gLog.SetLogLevel(gLevel);
#else
            LogLevel gLevel = LogLevel.kLogLevel_Default; // set the default log level: Info, Warn, Error, Debug
            // it is OK for kLogLevel_Debug to be set in Release mode ... must of the chatty messages are from kLogLevel_VerboseDebug
            gLevel &= ~LogLevel.kLogLevel_Debug; // ensure this is not set, ever in release mode         
            gLevel &= ~LogLevel.kLogLevel_VerboseDebug; // ensure this is not set, ever in release mode         
            gLog.SetLogLevel(gLevel);
#endif
            gLog.ReportProgressEvent += new EventHandler<ReportProgressEventArgs>(gLog_ReportProgress);
        }

        [Conditional("OVERRIDE_COMMANDLINE_ARGUMENTS")]
        static void CreateDebugCommandlineArgs(ref List<string> cargs)
        {
           cargs = new List<string>();
            cargs.Add(string.Format("--xmltv_file=\"{0}\"", @"c:\EPG Guide\Guide\tvguide.xml"));
            cargs.Add(string.Format("--gbprv_db=\"{0}\"", @"c:\Program Files (x86)\Devnz\GBPVR\gbpvr.db3"));
        }

        static List<string> CreateCommandlineArgs(string[] args)
        {
            List<string> cargs = new List<string>(args);
            CreateDebugCommandlineArgs(ref cargs);
            return cargs;
        }

        static void Main(string[] args)
        {
            CreateLog();
            var cargs = CreateCommandlineArgs(args);
            foreach (var carg in cargs)
            {
                if (carg.ToLower().Contains("--xmltv_file="))
                {
                    XMLTV_FILE = carg.Replace("--xmltv_file=", "").Replace("\"","");
                    gLog.Info.WriteLine("XMLTV FILE: '{0}'", XMLTV_FILE);
                }
                else if (carg.ToLower().Contains("--gbprv_db="))
                {
                    GBPVR_DATABASE = carg.Replace("--gbprv_db=", "").Replace("\"", "");
                    gLog.Info.WriteLine("GBPVR DATABASE: '{0}'", GBPVR_DATABASE);
                }
                else
                {
                    gLog.Warn.WriteLine("Unknown commandline option: {0}", carg);
                }
            }

            LoadXMLTVFile();
            LoadGBPVRDatabase();
            PerformDatabaseProcessing();
        }

        static void ConsoleOverwritePreviosLine(string format, params object[] args)
        {
            Console.WriteLine(format,args);
            Console.SetCursorPosition(0, Console.CursorTop - 1);
        }

        static void gLog_ReportProgress(object sender, ReportProgressEventArgs e) 
        {
            //if (!XMLTV_INSTANCE_CREATED && LOADING_XMLTV_FILE)
            //{
            //    if (LAST_REPORTED_XMLTV_PROGRESS != e.Progress)
            //    {
            //        ConsoleOverwritePreviosLine("XMLTV: {0} Loading: {1:00}%", fi_XMLTVFILE.Name, e.Progress);
            //        LAST_REPORTED_XMLTV_PROGRESS = e.Progress;
            //        if (e.Progress == 100)
            //        {
            //            Console.WriteLine("XMLTV: {0} Loading: {1:00}%", fi_XMLTVFILE.Name, e.Progress);
            //        }
            //    }
            //}
            //if (!SQLLIST_INSTANCE_CREATED && LOADING_GBPVR_DATABASE)
            //{
            //    if (LAST_REPORTED_SQLLITE_PROGRESS != e.Progress)
            //    {
            //        ConsoleOverwritePreviosLine("SQLLITE: {0} Loading: {1:00}%", fi_XMLTVFILE.Name, e.Progress);
            //        LAST_REPORTED_SQLLITE_PROGRESS = e.Progress;
            //        if (e.Progress == 100)
            //        {
            //            Console.WriteLine("SQLLITE: {0} Loading: {1:00}%", fi_XMLTVFILE.Name, e.Progress);
            //        }
            //    }
            //}

            object k = e.UserState;
            if (k == null)
            {
                if (sender == null)
                {
                    if (LAST_REPORTED_PROGRESS != e.Progress)
                    {
                        ConsoleOverwritePreviosLine("Progress: {0} ", e.Progress);
                        LAST_REPORTED_PROGRESS = e.Progress;
                        if (e.Progress == 100)
                        {
                            Console.WriteLine("Progress: {0} ", e.Progress);
                        }
                    }
                }
                else
                {
                    if (LAST_REPORTED_PROGRESS != e.Progress)
                    {
                        ConsoleOverwritePreviosLine("{0}: Progress: {1:00}%", sender.GetType().Name, e.Progress);
                        LAST_REPORTED_PROGRESS = e.Progress;
                        if (e.Progress == 100)
                        {
                            Console.WriteLine("{0}: Progress: {1:00}%", sender.GetType().Name, e.Progress);
                        }
                    }
                }
            }
            else
            {
                if (sender == null)
                {
                    if (LAST_REPORTED_PROGRESS != e.Progress)
                    {
                        ConsoleOverwritePreviosLine("Progress: {0} ", k.ToString());
                        LAST_REPORTED_PROGRESS = e.Progress;
                        if (e.Progress == 100)
                        {
                            Console.WriteLine("Progress: {0} ", k.ToString());
                        }
                    }
                }
                else
                {
                    if (LAST_REPORTED_PROGRESS != e.Progress)
                    {
                        ConsoleOverwritePreviosLine("{0}: {1}", sender.GetType().Name, k.ToString());
                        LAST_REPORTED_PROGRESS = e.Progress;
                        if (e.Progress == 100)
                        {
                            Console.WriteLine("{0}: {1}", sender.GetType().Name, k.ToString());
                        }
                    }
                }
            }
        }
        static void LoadXMLTVFile()
        {
            //LOADING_XMLTV_FILE = true;
            if (string.IsNullOrEmpty(XMLTV_FILE))
            {
                gLog.Error.WriteLine("XMLTV File is either a null or empty string.");
                //LOADING_XMLTV_FILE = false;
                return;
            }
            fi_XMLTVFILE = new FileInfo(XMLTV_FILE);
            if (!fi_XMLTVFILE.Exists)
            {
                gLog.Error.WriteLine("Could not find XMLTV File: {0}", fi_XMLTVFILE.FullName);
                //LOADING_XMLTV_FILE = false;
                return;
            }

            XMLTV.Create(fi_XMLTVFILE.FullName, new EventHandler<EventArgs>(XMLTV_OnInstanceCreated));
            while (!XMLTV_INSTANCE_CREATED) { Application.DoEvents(); }
            //LOADING_XMLTV_FILE = false;
        }
        static void XMLTV_OnInstanceCreated(object sender, EventArgs e) { XMLTV_INSTANCE_CREATED = true; }

        static void LoadGBPVRDatabase()
        {
            //LOADING_GBPVR_DATABASE = true;
            if (string.IsNullOrEmpty(GBPVR_DATABASE))
            {
                gLog.Error.WriteLine("GBPVR Datbase is either a null or empty string.");
                //LOADING_GBPVR_DATABASE = false;
                return;
            }
            fi_GBPVRDATABASE = new FileInfo(GBPVR_DATABASE);
            if (!fi_GBPVRDATABASE.Exists)
            {
                gLog.Error.WriteLine("Could not find GBPVR Database: {0}", fi_GBPVRDATABASE.FullName);
                //LOADING_GBPVR_DATABASE = false;
                return;
            }
            sqlite = SQLLITE.Create(fi_GBPVRDATABASE.FullName, new EventHandler<EventArgs>(SQLLITE_OnInstanceCreated));
            while (!SQLLIST_INSTANCE_CREATED) { Application.DoEvents(); }
            //LOADING_GBPVR_DATABASE = false;
        }
        static void SQLLITE_OnInstanceCreated(object sender, EventArgs e) { SQLLIST_INSTANCE_CREATED = true; }


        //static List<SQLLITE.IPROGRAMME> gbpvr_invalid_programs;
        //static List<SQLLITE.IPROGRAMME> gbpvr_valid_programs;
        //static List<SQLLITE.ICHANNEL> gbpvr_channels;
        //static List<SQLLITE.IRECORDING_SCHEDULE> gbpvr_recordings;
        //static List<libxmltv.Interfaces.IProgramDefinition> xmltv_programs;
        static void PerformDatabaseProcessing()
        {
            var sqllite_channels = sqlite.Channels;
            var sqllite_recordings = sqlite.Recordings;
            var sqllite_programs = sqlite.Programs;
            Type datatype;
            var xmlt_raw_program_data = (IProgramDefinitionList)XMLTV.CreateBindingSourceFromData(XMLTV.GetPrograms(), out datatype);
            var xmltv_programs = xmlt_raw_program_data.ToList().OrderBy(p => DateTime.Parse(p.Start)).ToList();
            var sqllite_programs_startdate_range = sqlite.GetProgramsDateRange(sqllite_programs);
            var xmltv_programs_startdate_range = GetXMLTVProgramStartDateRange(xmltv_programs);
            var gbpvr_invalid_programs = new List<SQLLITE.IPROGRAMME>();
            var gbpvr_valid_programs = sqlite.CreateUpdatedProgramsList(sqllite_programs, xmltv_programs, out gbpvr_invalid_programs);
            xmltv_programs = xmltv_programs.OrderBy(s => s.ChannelNumber).ThenBy(s => DateTime.Parse(s.Start)).ToList();
            //sqllite_channels.TrimExcess();
            //gbpvr_invalid_programs.TrimExcess();
            //gbpvr_valid_programs.TrimExcess();
            //sqllite_programs.TrimExcess();
            //xmltv_programs.TrimExcess();
            //CheckScheduledRecordingsForDiscrepancies(sqllite_recordings);
            //CheckProgramsForDiscrepancies(gbpvr_valid_programs, xmltv_programs);
        }

        static IDateTimeRange GetXMLTVProgramStartDateRange(List<libxmltv.Interfaces.IProgramDefinition> programs)
        {
            IDateTimeRange range = DateTimeRange.Create();
            var list = new List<libxmltv.Interfaces.IProgramDefinition>(programs.ToArray());
            DateTime first = new DateTime();
            DateTime last = new DateTime();
            first = DateTime.Parse(list.OrderBy(s => DateTime.Parse(s.Start)).ToList().First().Start);
            last = DateTime.Parse(list.OrderBy(s => DateTime.Parse(s.Start)).ToList().Last().Start);
            gLog.Verbose.Debug.WriteLine("\tFirst: {0} = ({1})", first.ToString("yyyy/MM/dd HH:mm:ss.fffffff"), first.ToDateTimeString());
            gLog.Verbose.Debug.WriteLine("\tLast: {0} = ({1})", last.ToString("yyyy/MM/dd HH:mm:ss.fffffff"), last.ToDateTimeString());
            range = DateTimeRange.Create(first, last);
            return range;
        }

        static void CheckScheduledRecordingsForDiscrepancies(List<SQLLITE.IRECORDING_SCHEDULE> gbpvr)
        {
            ////gLog.Warn.WriteLine("CheckScheduledRecordingsForDiscrepancies() has not been implemented");
            //var manual_gbpvr_recordings = gbpvr.FindAll(p => p.recording_type == 0).ToList();

            //foreach (var manual_recording in manual_gbpvr_recordings)
            //{
            //    string title = manual_recording.filename;
            //    DateTime start = manual_recording.manual_start_time;
            //    DateTime end = manual_recording.manual_end_time;
            //    long channel_oid = manual_recording.manual_channel_oid;
            //    var found_channel = gbpvr_channels.Find(p => p.oid == channel_oid);
            //    var channel_number = found_channel.channel_number;
            //    var found_program = xmltv_programs.ToList().Find(p => 
            //        p.Title.ToLower() == title.ToLower() && 
            //        p.Start == start.ToDateTimeString() &&
            //        p.Stop == end.ToDateTimeString() &&
            //        p.ChannelNumber == channel_number
            //        );
            //    if (found_program != null)
            //    {
            //        gLog.Info.WriteLine("Recording might be valid: oid='{0}' programme_oid='{1}' title='{2}' start='{3}', end='{4}'", manual_recording.oid, manual_recording.programme_oid, title, start.ToDateTimeString(), end.ToDateTimeString());
            //    }
            //    else
            //    {
            //        gLog.Warn.WriteLine("Recording may not be valid: oid='{0}' programme_oid='{1}' title='{2}' start='{3}', end='{4}'", manual_recording.oid, manual_recording.programme_oid, title, start.ToDateTimeString(), end.ToDateTimeString());
            //        // find the program on the channel at the start time
            //        var correct_program = xmltv_programs.ToList().Find(p => 
            //            p.ChannelNumber == channel_number &&
            //            p.Start == start.ToDateTimeString()
            //            );
            //        if (correct_program != null)
            //        {
            //            gLog.Warn.WriteLine("\tThis will be recorded: {0}", correct_program.ToString());
            //        }
            //    }
            //}
        }

        static void CheckProgramsForDiscrepancies(List<SQLLITE.IPROGRAMME> list_gbpvr, List<libxmltv.Interfaces.IProgramDefinition> list_xmltv)
        {
            ////gLog.Warn.WriteLine("CheckProgramsForDiscrepancies() has not been implemented");
            //var gbpvr = list_gbpvr.ToArray();
            //var xmltv = list_xmltv.ToArray();
            ////if (gbpvr.Count() != xmltv.Count())
            ////{
            ////    throw new ArgumentOutOfRangeException("gbpvr.Count/xmltv.Count", string.Format("gbpvr.Count: '0x{0:x8}' != xmltv.Count: '0x{1:x8}'", gbpvr.Count(),xmltv.Count()));
            ////}
            ////for (int i = 0; i < gbpvr.Count(); i++)
            ////{
            ////    var gbpvr_entry = gbpvr[i];
            ////    var xmltv_entry = gbpvr_entry.AsXMLTVProgramDefinition(sqlite);
            ////    if (!xmltv[i].Equals(xmltv_entry))
            ////    {
            ////        gLog.Warn.WriteLine("Warning GBPVR Program oid: {0} might be invalid", gbpvr_entry.oid);
            ////    }
            ////}
        }
    }
}