//#define SQLLITE_CONNECTION_TEST
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SQLite;
using System.Diagnostics;
using Enterprise.Logging;
using libxmltv;
using libxmltv.Interfaces;
using libxmltv.Core;
namespace GBPVRProgramDatabaseFixer
{
    public interface ISQLLITE
    {
        List<SQLLITE.IPROGRAMME> Programs { get; }
        List<SQLLITE.IRECORDING_SCHEDULE> Recordings { get; }
        List<SQLLITE.ICHANNEL> Channels { get; }
        IDateTimeRange GetProgramsDateRange(List<SQLLITE.IPROGRAMME> programs);
        List<SQLLITE.IPROGRAMME> FixGBPVRProgramsDatabase(List<SQLLITE.IPROGRAMME> gbpvr_programs, List<libxmltv.Interfaces.IProgramDefinition> xmltv_programs, out List<SQLLITE.IPROGRAMME> removed_programs);

    }
    public class SQLLITE : ISQLLITE
    {
        private struct OldNewProgram
        {
            public IPROGRAMME OldProgram;
            public IPROGRAMME NewProgram;
        }
        public static ISQLLITE Create(string database, EventHandler<EventArgs> OnInstanceCreated)
        {
            return new SQLLITE(database, OnInstanceCreated);
        }

        #region DATABASE DEFINITIONS

        public interface ICHANNEL
        {
            Int64 oid { get; }
            String name { get; }
            String channelID { get; }
            Int64 channel_number { get; }
            String favourite_channel { get; }
            String display_name { get; }
        }
        private class CHANNEL : ICHANNEL
        {
            public CHANNEL() 
            {
                BaseDatabaseDefinition<CHANNEL>.CreateDefault(this); 
            }
            //public RECORDING_SCHEDULE(SQLiteDataReader r, int index) { BaseDatabaseDefinition<RECORDING_SCHEDULE>.Create(this, r, index); }

            public static void Create(ref CHANNEL instance, SQLiteDataReader r, int index)
            {
                BaseDatabaseDefinition<CHANNEL>.Create(ref instance, r, index);
            }
            #region ICHANNEL members
            public Int64 oid { get; set; }
            public String name { get; set; }
            public String channelID { get; set; }
            public Int64 channel_number { get; set; }
            public String favourite_channel { get; set; }
            public String display_name { get; set; }
            #endregion
        }
        public interface IRECORDING_SCHEDULE
        {
            Int64 oid { get; }
            Int64 programme_oid { get; }
            Int64 capture_source_oid { get; }
            Int16 status { get; }
            String filename { get; }
            Int64 recording_type { get; }
            Int64 recording_group { get; }
            DateTime manual_start_time { get; }
            DateTime manual_end_time { get; }
            Int64 manual_channel_oid { get; }
            Int64 quality_level { get; }
            Int64 pre_pad_minutes { get; }
            Int64 post_pad_minutes { get;}
            Int32 priority { get; }
            String conversion_profile { get; }
        }

        private static class BaseDatabaseDefinition<T>
        {
            public static void CreateDefault(T instance)
            {
                try
                {
                    Type t = typeof(T);
                    var props = t.GetProperties();
                    foreach (var prop in props)
                    {
                        Type prop_type = prop.PropertyType;
                        object field_value = null;
                        try
                        {
                            if (prop_type == typeof(string))
                            {
                                field_value = string.Empty;
                            }
                            else
                            {
                                field_value = Activator.CreateInstance(prop_type);
                            }
                        }
                        catch (Exception ex)
                        {
                            throw ex;
                        }
                        prop.SetValue(instance, field_value, null);
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
            public static void Create(ref T instance, SQLiteDataReader r, int index)
            {                
                string field_name = r.GetName(index);
                Type field_type = r.GetFieldType(index);
                object field_value = r.GetValue(index);
                //gLog.Verbose.Debug.WriteLine("Name: '{0}' Type: '{1}' Value: '{2}'", field_name, field_type.Name, field_value == null ? "null" : field_value.ToString());

                Type t = typeof(T);
                var props = t.GetProperties();
                foreach (var prop in props)
                {
                    if (prop.Name.ToLower() == field_name.ToLower())
                    {
                        if (prop.PropertyType == field_type)
                        {
                            Type db_type = field_value.GetType();
                            try
                            {
                                if (db_type == typeof(System.DBNull))
                                {
                                    prop.SetValue(instance, null, null);
                                }
                                else
                                {
                                    prop.SetValue(instance, field_value, null);
                                }
                                
                            }
                            catch (Exception ex) 
                            {
                                throw ex;
                            }
                        }
                        else
                        {
                            gLog.Verbose.Debug.WriteLine("Found Property: {0} but there was a type mismatch. Property Type: '{1}' Expected: '{2}'", prop.Name, prop.PropertyType.Name, field_type.Name);
                            throw new InvalidOperationException(string.Format("Found Property: {0} but there was a type mismatch. Property Type: '{1}' Expected: '{2}'", prop.Name, prop.PropertyType.Name, field_type.Name));
                        }
                    }
                }

            }
        }

        private class RECORDING_SCHEDULE : IRECORDING_SCHEDULE
        {
            public RECORDING_SCHEDULE() 
            {
                BaseDatabaseDefinition<RECORDING_SCHEDULE>.CreateDefault(this); 
            }
            //public RECORDING_SCHEDULE(SQLiteDataReader r, int index) { BaseDatabaseDefinition<RECORDING_SCHEDULE>.Create(this, r, index); }

            public static void Create(ref RECORDING_SCHEDULE instance, SQLiteDataReader r, int index)
            {
                BaseDatabaseDefinition<RECORDING_SCHEDULE>.Create(ref instance, r, index); 
            }

            #region IRECORDING_SCHEDULE members
            public Int64 oid { get; set;}
            public Int64 programme_oid { get; set;}
            public Int64 capture_source_oid { get; set;}
            public Int16 status { get; set; }
            public String filename { get; set; }
            public Int64 recording_type { get;set; }
            public Int64 recording_group { get; set;}
            public DateTime manual_start_time { get; set;}
            public DateTime manual_end_time { get; set; }
            public Int64 manual_channel_oid { get; set; }
            public Int64 quality_level { get; set; }
            public Int64 pre_pad_minutes { get; set; }
            public Int64 post_pad_minutes { get; set; }
            public Int32 priority { get; set; }
            public String conversion_profile { get; set; }
            #endregion
        }

        public interface IPROGRAMME
        {
            Int64 oid { get; set; }
            String name { get; set; }
            String sub_title { get; set; }
            String description { get; set; }
            DateTime start_time { get; set; }
            DateTime end_time { get; set; }
            Int64 channel_oid { get; set; }
            String unique_identifier { get; set; }
            String rating { get; set; }

            IProgramDefinition AsXMLTVProgramDefinition(ISQLLITE sqllite);
        }
        private class PROGRAMME : IPROGRAMME
        {
            public PROGRAMME() 
            {
                BaseDatabaseDefinition<PROGRAMME>.CreateDefault(this); 
            }
            //public PROGRAMME(SQLiteDataReader r, int index) : base(r, index) { }
            public static void Create(ref PROGRAMME instance, SQLiteDataReader r, int index)
            {
                BaseDatabaseDefinition<PROGRAMME>.Create(ref instance, r, index);
            }
            #region IPROGRAMME members
            public Int64 oid { get; set; }
            public String name { get; set; }
            public String sub_title { get; set; }
            public String description { get; set; }
            public DateTime start_time { get; set; }
            public DateTime end_time { get; set; }
            public Int64 channel_oid { get; set; }
            public String unique_identifier { get; set; }
            public String rating { get; set; }
            public IProgramDefinition AsXMLTVProgramDefinition(ISQLLITE sqllite)
            {
                ProgramList.ProgramDefintion definition = new ProgramList.ProgramDefintion();
                var channel = sqllite.Channels.Find(s => s.oid == this.channel_oid);
                definition.ChannelName = channel.display_name;
                definition.ChannelNumber = (int)channel.channel_number;
                definition.Description = this.description;
                definition.Start = this.start_time.ToDateTimeString();
                definition.Stop = this.end_time.ToDateTimeString();
                definition.SubTitle = this.sub_title;
                definition.Title = this.name;
                return definition;
            }
            #endregion
        }
        #endregion
        private static class TABLES
        {
            public const string RECORDING_SCHEDULE = "RECORDING_SCHEDULE";
            public const string PROGRAMME = "PROGRAMME";
            public const string CHANNEL = "CHANNEL";
        }

        //public SQLLite() { }
        protected SQLLITE(string database, EventHandler<EventArgs> OnInstanceCreated) 
        {
            this.OnInstanceCreated = OnInstanceCreated;
            //CreateConnection(database);
            this.Database = database;
            if (!CreateDatabaseBackup())
            {
                gLog.Error.WriteLine("Failed to backup database.");
                return;
            }
            ConnectionTest();
            ReadChannelData();
            ReadRecodringScheduleData();
            ReadProgrammeData();
            OnCreatedInstance(this, new EventArgs());
        }

        [NonSerialized]
        private EventHandler<EventArgs> _OnInstanceCreated;
        private EventHandler<EventArgs> OnInstanceCreated { get { return _OnInstanceCreated; } set { _OnInstanceCreated = value; } }
        
        private void OnCreatedInstance(object sender, EventArgs e)
        {
            if (OnInstanceCreated != null) { OnInstanceCreated.Invoke(sender, e); }
        }

        private string Database;
        #region ISQLLITE members        
        public List<IPROGRAMME> Programs { get; private set; }
        public List<IRECORDING_SCHEDULE> Recordings { get; private set; }
        public List<ICHANNEL> Channels { get; private set; }

        public IDateTimeRange GetProgramsDateRange(List<SQLLITE.IPROGRAMME> programs)
        {
            var list = new List<IPROGRAMME>(programs.ToArray());
            DateTime first = new DateTime();
            DateTime last = new DateTime();
            first = list.OrderBy(s => s.start_time).ToList().First().start_time;            
            last = list.OrderBy(s => s.start_time).ToList().Last().start_time;
            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());
            var range = DateTimeRange.Create(first, last);
            return range;
        }

        public List<SQLLITE.IPROGRAMME> FixGBPVRProgramsDatabase(List<SQLLITE.IPROGRAMME> gbpvr_programs, List<libxmltv.Interfaces.IProgramDefinition> xmltv_programs, out List<SQLLITE.IPROGRAMME> source_invalid)
        {
            source_invalid = new List<IPROGRAMME>();
            gbpvr_programs = gbpvr_programs.OrderBy(s => s.start_time).ToList();            
            List<SQLLITE.IPROGRAMME> source_valid = new List<IPROGRAMME>();

            List<OldNewProgram> source_update = new List<OldNewProgram>();
            //if (range == null)
            //{
            //    gLog.Warn.WriteLine("The DateTimeRange passed in is null...returning the original program list");
            //    return list;
            //}
            //gLog.Warn.WriteLine("FilterProgramsByDateRange has not been implemented");
            
            double total = gbpvr_programs.Count;
            double index = 0;
            double progress = 0;
            foreach (var program in gbpvr_programs)
            {  
                progress = 100.0 * (index / total);
                gLog.ReportProgress(this, new ReportProgressEventArgs((int)progress, string.Format("Filtering GBPVR Programs: {0:00}%", (int)progress)));                
                var channel_oid = program.channel_oid;
                var channel = this.Channels.Find(s => s.oid == channel_oid);
                var start_date = program.start_time;
                //var xmltv_entry_list = xmltv_programs.FindAll(s => s.ChannelNumber == channel.channel_number && s.Start == start_date.ToDateTimeString());
                var query = from c in xmltv_programs 
                            where 
                            c.ChannelNumber == channel.channel_number &&
                            c.Start == start_date.ToDateTimeString()
                            select c;

                IProgramDefinition xmltv_entry = null;
                if (query.Count()-1 > 0)
                {
                    gLog.Verbose.Error.WriteLine("Found more than one entry: Matching channel='{0}' and start='{1}'", channel.channel_number, start_date.ToDateTimeString());
                    gLog.Verbose.Error.WriteLine("    GB-PVR Program Data: oid='{0}' channel_oid='{1}' name='{2}' sub_title='{3}' description='{4}'", program.oid, program.channel_oid, program.name, program.sub_title, program.description);
                    if (Debugger.IsAttached)
                    {                      
                        gLog.Error.WriteLine("    Found: {0} matching entries", query.Count());
                        int k_index = 0;
                        foreach (var k in query)
                        {
                            gLog.Verbose.Error.WriteLine("    query[{0}]: channel='{1}' start='{2}' ('{3}') title='{4}' subtitle='{5}' description='{6}'", k_index, k.ChannelNumber, k.Start, DateTime.Parse(k.Start).ToString("yyyy/MM/dd HH:mm:ss.fffffff"), k.Title, k.SubTitle, k.Description);
                            k_index++;
                        }
                        Debugger.Break();
                    }
                }
                else
                {
                    xmltv_entry = query.FirstOrDefault();
                }

                if (xmltv_entry == null)
                {
                    //gLog.Verbose.Warn.WriteLine("Invalidating GB-PVR Program: oid='{0}' channel_oid='{1}' title='{2}' start='{3}'", program.oid, program.channel_oid, program.name, program.start_time.ToDateTimeString());
                    source_invalid.Add(program);                   
                }
                else
                {
                    //gLog.Verbose.Warn.WriteLine("Updating GB-PVR Program (if needed): oid='{0}' channel_oid='{1}' title='{2}' subtitle='{3}' start='{4}'", program.oid, program.channel_oid, program.name, program.sub_title, program.start_time.ToDateTimeString());
                    var updated_program = program;
                    bool needsupdate = false;
                    if (xmltv_entry.Title != program.name)
                    {
                        //gLog.Verbose.Warn.WriteLine("    Updating:");
                        //gLog.Verbose.Warn.WriteLine("        Old Title: {0}", program.name);
                        //gLog.Verbose.Warn.WriteLine("        New Title: {0}", xmltv_entry.Title);
                        updated_program.name = xmltv_entry.Title;
                        needsupdate = true;
                    }
                    if (xmltv_entry.SubTitle != program.sub_title)
                    {
                        //gLog.Verbose.Warn.WriteLine("    Updating:");
                        //gLog.Verbose.Warn.WriteLine("        Old SubTile: {0}", program.sub_title);
                        //gLog.Verbose.Warn.WriteLine("        New SubTile: {0}", xmltv_entry.SubTitle);
                        updated_program.sub_title = xmltv_entry.SubTitle;
                        needsupdate = true;
                    }
                    if (xmltv_entry.Description != program.description)
                    {
                        //gLog.Verbose.Warn.WriteLine("    Updating:");
                        //gLog.Verbose.Warn.WriteLine("        Old Descption: {0}", program.description);
                        //gLog.Verbose.Warn.WriteLine("        New Descption: {0}", xmltv_entry.Description);
                        updated_program.description = xmltv_entry.Description;
                        needsupdate = true;
                    }
                    if (DateTime.Parse(xmltv_entry.Start) != program.start_time)
                    {
                        //gLog.Verbose.Warn.WriteLine("    Updating:");
                        //gLog.Verbose.Warn.WriteLine("        Old StartTime: {0}", program.start_time.ToDateTimeString());
                        //gLog.Verbose.Warn.WriteLine("        New StartTime: {0}", DateTime.Parse(xmltv_entry.Start).ToDateTimeString());
                        updated_program.start_time = DateTime.Parse(xmltv_entry.Start);
                        needsupdate = true;
                    }
                    if (DateTime.Parse(xmltv_entry.Stop) != program.end_time)
                    {
                        //gLog.Verbose.Warn.WriteLine("    Updating:");
                        //gLog.Verbose.Warn.WriteLine("        Old EndTime: {0}", program.end_time.ToDateTimeString());
                        //gLog.Verbose.Warn.WriteLine("        New EndTime: {0}", DateTime.Parse(xmltv_entry.Stop).ToDateTimeString());
                        updated_program.end_time = DateTime.Parse(xmltv_entry.Stop);
                        needsupdate = true;
                    }
                    
                    if (needsupdate)
                    {
                        OldNewProgram p = new OldNewProgram();
                        p.OldProgram = program;
                        p.NewProgram = updated_program;
                        source_update.Add(p);
                    }
                    source_valid.Add(updated_program);
                }
                index++;
            }


            source_valid = source_valid.OrderBy(s => s.channel_oid).ThenBy(s => s.start_time).ToList();
            source_invalid = source_invalid.OrderBy(s => s.channel_oid).ThenBy(s => s.start_time).ToList();

            if (source_invalid.Count > 0)
            {
                double source_invalid_count = source_valid.Count;
                double source_invalid_index = 0;
                double source_invalid_progress = 0;
                foreach (var old_program in source_invalid)
                {
                    source_invalid_progress = 100.0 * (source_invalid_index / source_invalid_count);
                    gLog.ReportProgress(this, new ReportProgressEventArgs((int)source_invalid_progress, string.Format("Removing old GBPVR Programs: {0:00}%", (int)source_invalid_progress)));    
                    // remove database entry
                    if (!RemoveProgramDatabaseEntry(old_program))
                    {
                        gLog.Error.WriteLine("Failed to remove program with oid: '{0}'", old_program.oid);
                    }
                    else
                    {
                        gLog.Verbose.Info.WriteLine("Removed program with oid: '{0}'", old_program.oid);
                    }
                    source_invalid_index++;
                }
            }
            else
            {
                gLog.Info.WriteLine("No old GB-PVR Programs needed to be removed.");
            }

            if (source_update.Count > 0)
            {
                double source_update_count = source_valid.Count;
                double source_update_index = 0;
                double source_update_progress = 0;
                foreach (var p in source_update)
                {
                    source_update_progress = 100.0 * (source_update_index / source_update_count);
                    gLog.ReportProgress(this, new ReportProgressEventArgs((int)source_update_progress, string.Format("Updating GBPVR Programs: {0:00}%", (int)source_update_progress)));    
                    // remove database entry
                    if (!UpdateProgramDatabaseEntry(p.OldProgram,p.NewProgram))
                    {
                        gLog.Error.WriteLine("Failed to update program with oid: '{0}'", p.OldProgram.oid);
                    }
                    else
                    {
                        gLog.Verbose.Info.WriteLine("Upated program with oid: '{0}'", p.OldProgram.oid);
                    }
                    source_update_index++;
                }
            }
            else
            {
                gLog.Info.WriteLine("No GB-PVR Programs needed to be updated.");
            }

            gLog.Info.WriteLine("Total XMLTV Programs: 0x{0:x8}", xmltv_programs.Count);
            gLog.Info.WriteLine("Updated: 0x{0:x8} GB-PVR Programs", source_valid.Count);
            gLog.Info.WriteLine("Removed: 0x{0:x8} GB-PVR Programs", source_invalid.Count);
            gLog.Info.WriteLine("Total GB-PVR Programs (Updated & Removed): 0x{0:x8}", source_valid.Count + source_invalid.Count);

            return source_valid;
        }
        #endregion


        private string CreateConnectionString()
        {
            string connection_string = string.Format("Data Source={0}", this.Database);
            return connection_string;
        }

        private SQLiteConnection CreateConnection() { SQLiteConnection connection = new SQLiteConnection(CreateConnectionString()); return connection; }

        [Conditional("SQLLITE_CONNECTION_TEST")]
        private void ConnectionTest()
        {
            try
            {
                using (SQLiteConnection con = CreateConnection())
                {
                    con.Open();
                    string command_text = string.Format("select * from {0};", TABLES.CHANNEL);
                    gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                    using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                    {
                        using (SQLiteDataReader r = cmd.ExecuteReader())
                        {
                            if (!r.HasRows)
                            {
                                gLog.Warn.WriteLine("Query: '{0}' returned no rows.", cmd.CommandText);
                            }
                            else
                            {
                                while (r.Read())
                                {
                                    for (int i = 0; i < r.FieldCount; i++)
                                    {
                                        string field_name = r.GetName(i);
                                        Type field_type = r.GetFieldType(i);
                                        object field_value = r.GetValue(i);
                                        gLog.Verbose.Debug.WriteLine("Name: '{0}' Type: '{1}' Value: '{2}'", field_name, field_type.Name, field_value == null ? "null" : field_value.ToString());
                                    }
                                    break;
                                }
                            }
                        }
                    }
                    con.Clone();
                }
                OnCreatedInstance(this, new EventArgs());
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }


        private bool CreateDatabaseBackup()
        {
            try
            {
                string backup_file = string.Format("{0}.{1}", this.Database, DateTime.Now.ToString("yyyyMMddHHmmss"));
                gLog.Info.WriteLine("Creating Database backup...");
                gLog.Info.WriteLine("\tSource: {0}", this.Database);
                gLog.Info.WriteLine("\tDestination: {0}", backup_file);

                System.IO.File.Copy(this.Database, backup_file);
                return true;
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
                return false;
            }
        }
        private void ReadChannelData()
        {
            try
            {
                List<ICHANNEL> channels = new List<ICHANNEL>();
                using (SQLiteConnection con = CreateConnection())
                {
                    con.Open();
                    string command_text = string.Format("select * from {0};", TABLES.CHANNEL);
                    gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                    using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                    {
                        using (SQLiteDataReader r = cmd.ExecuteReader())
                        {
                            if (!r.HasRows)
                            {
                                gLog.Warn.WriteLine("Query: '{0}' returned no rows.", cmd.CommandText);
                            }
                            else
                            {
                                while (r.Read())
                                {
                                    CHANNEL channel = new CHANNEL();
                                    for (int i = 0; i < r.FieldCount; i++)
                                    {
                                        CHANNEL.Create(ref channel, r, i);
                                    }
                                    channels.Add(channel);
                                }
                            }
                        }
                    }
                    con.Clone();
                }
                this.Channels = channels;
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }
        private void ReadProgrammeData()
        {
            try
            {
                List<IPROGRAMME> programs = new List<IPROGRAMME>();
                using (SQLiteConnection con = CreateConnection())
                {
                    con.Open();
                    string command_text = string.Format("select * from {0};", TABLES.PROGRAMME);
                    gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                    using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                    {
                        using (SQLiteDataReader r = cmd.ExecuteReader())
                        {
                            if (!r.HasRows)
                            {
                                gLog.Warn.WriteLine("Query: '{0}' returned no rows.", cmd.CommandText);
                            }
                            else
                            {
                                while (r.Read())
                                {
                                    PROGRAMME program = new PROGRAMME();
                                    for (int i = 0; i < r.FieldCount; i++)
                                    {
                                        PROGRAMME.Create(ref program, r, i);
                                    }
                                    programs.Add(program);
                                }
                            }
                        }
                    }
                    con.Clone();
                }
                this.Programs = programs;
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }
        private void ReadRecodringScheduleData()
        {
            try
            {
                List<IRECORDING_SCHEDULE> recordings = new List<IRECORDING_SCHEDULE>();
                using (SQLiteConnection con = CreateConnection())
                {
                    con.Open();
                    string command_text = string.Format("select * from {0};", TABLES.RECORDING_SCHEDULE);
                    gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                    using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                    {
                        using (SQLiteDataReader r = cmd.ExecuteReader())
                        {
                            if (!r.HasRows)
                            {
                                gLog.Warn.WriteLine("Query: '{0}' returned no rows.", cmd.CommandText);
                            }
                            else
                            {
                                while (r.Read())
                                {
                                    RECORDING_SCHEDULE recording = new RECORDING_SCHEDULE();
                                    for (int i = 0; i < r.FieldCount; i++)
                                    {
                                        RECORDING_SCHEDULE.Create(ref recording, r, i);
                                    }
                                    recordings.Add(recording);
                                }
                            }
                        }
                    }
                    con.Clone();
                }
                this.Recordings = recordings;
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
            }
        }



        private bool RemoveProgramDatabaseEntry(IPROGRAMME old_program)
        {
            bool result = false;
            try
            {                
                using (SQLiteConnection con = CreateConnection())
                {
                    try
                    {
                        gLog.Verbose.Info.WriteLine("Removing old program with oid: '{0}'", old_program.oid);
                        con.Open();
                        string command_text = string.Format(@"DELETE FROM [{0}] WHERE [oid] = @oid;", TABLES.PROGRAMME);
                        gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                        using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                        {
                            cmd.Parameters.Add(new SQLiteParameter("oid", old_program.oid));
                            int rowsupdated = cmd.ExecuteNonQuery();
                            gLog.Verbose.Info.WriteLine("Updated '{0}' rows", rowsupdated);
                        }
                        con.Clone();
                        result = true;
                    }
                    catch (SQLiteException ex)
                    {
                        gLog.Error.WriteLine(ex.ToString());
                        result = false;
                    }
                }
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
                result = false;
            }
            return result;
        }
        private bool UpdateProgramDatabaseEntry(IPROGRAMME old_program, IPROGRAMME new_program)
        {
            bool result = false;
            try
            {
                using (SQLiteConnection con = CreateConnection())
                {
                    try
                    {
                        gLog.Verbose.Info.WriteLine("Updating old program with oid: '{0}'", old_program.oid);
                        con.Open();
                        //string command_text = string.Format(@"UPDATE [{0}] SET [name]=@name,[sub_title]=@subtitle, WHERE [OID] = @oid", TABLES.PROGRAMME);
                        string command_text = string.Empty;
                        StringBuilder builder = new StringBuilder();

                        builder.AppendLine(string.Format("UPDATE [{0}]", TABLES.PROGRAMME));
                        builder.Append("SET ");
                        builder.AppendFormat("[name]=@name,");
                        builder.AppendFormat("[sub_title]=@sub_title,");
                        builder.AppendFormat("[description]=@description,");
                        builder.AppendFormat("[start_time]=@start_time,");
                        builder.AppendFormat("[end_time]=@end_time,");
                        builder.AppendFormat("[channel_oid]=@channel_oid,");
                        builder.AppendFormat("[unique_identifier]=@unique_identifier,");
                        builder.AppendFormat("[rating]=@rating");
                        builder.AppendLine(" WHERE [oid] = @oid");

                        command_text = builder.ToString();
                        gLog.Verbose.Debug.WriteLine("Executing Command: '{0}'", command_text);
                        using (SQLiteCommand cmd = new SQLiteCommand(command_text, con))
                        {
                            cmd.Parameters.Add(new SQLiteParameter("oid", old_program.oid));
                            cmd.Parameters.Add(new SQLiteParameter("name", new_program.name));
                            cmd.Parameters.Add(new SQLiteParameter("sub_title", new_program.sub_title));
                            cmd.Parameters.Add(new SQLiteParameter("description", new_program.description));
                            cmd.Parameters.Add(new SQLiteParameter("start_time", new_program.start_time));
                            cmd.Parameters.Add(new SQLiteParameter("end_time", new_program.end_time));
                            cmd.Parameters.Add(new SQLiteParameter("channel_oid", new_program.channel_oid));
                            cmd.Parameters.Add(new SQLiteParameter("unique_identifier", new_program.unique_identifier));
                            cmd.Parameters.Add(new SQLiteParameter("rating", new_program.rating));
                            int rowsupdated = cmd.ExecuteNonQuery();
                            gLog.Verbose.Info.WriteLine("Updated '{0}' rows", rowsupdated);
                        }
                        con.Clone();
                        result = true;
                    }
                    catch (SQLiteException ex)
                    {
                        gLog.Error.WriteLine(ex.ToString());
                        result = false;
                    }
                }
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine(ex.ToString());
                result = false;
            }
            return result;
        }
    }
}