/*
 * TDAS.File.cs
 * 
 * Copyright © 2010
 * Diversified Technical Systems, Inc.
 * All Rights Reserved
 */

using DTS.Common.Utilities.DotNetProgrammingConstructs;

namespace DTS.Serialization.TDAS
{   ///
    /// <summary>
    /// TDAS File
    /// </summary>
    /// 
    public partial class File
        : Serialization.File, IWritable<Test>
    {   ///
        /// <summary>
        /// Initialize an instance of the FtssCsv.File class.
        /// </summary>
        /// 
        public File()
            : base("TDAS")
        {
        }

        /// <summary>
        /// Get this file format's extension.
        /// </summary>
        public static string Extension => ".tlf";

        /// <summary>
        /// Get the file writer for this file type.
        /// </summary>
        public IWriter<Test> Exporter
        {
            get
            {
                try
                {
                    if (_Exporter == null)
                        _Exporter = new Writer(this, DefaultEncoding);
                    return _Exporter;
                }

                catch (System.Exception ex)
                {
                    throw new Exception("encountered problem getting exporter", ex);
                }
            }
        }
        private IWriter<Test> _Exporter = null;

        /// <summary>
        /// Get the file reader for this file type.
        /// </summary>
        public IReader<Test> Importer
        {
            get
            {
                try
                {
                    if (_Importer == null)
                        _Importer = new Reader(this);
                    return _Importer;
                }

                catch (System.Exception ex)
                {
                    throw new Exception("encountered problem getting importer", ex);
                }
            }
        }
        private IReader<Test> _Importer = null;

        /// <summary>
        /// File extension for the disk entity that contains the serialized test information.
        /// </summary>
        public static string TestFileExtension
        {
            get => _TestFileExtension.Value;
            private set => _TestFileExtension.Value = value;
        }
        private static readonly Property<string> _TestFileExtension = new Property<string>("TestFileExtension", ".tlf", true);

        /// <summary>
        /// File extension for the disk entity that contains serialized channel information.
        /// </summary>
        public static string ChannelFileExtension
        {
            get => _ChannelFileExtension.Value;
            private set => _ChannelFileExtension.Value = value;
        }
        private static readonly Property<string> _ChannelFileExtension = new Property<string>("ChannelFileExtension", ".BIN", true);

        /// <summary>
        /// File extension for the disk entity that contains serialized channel information.
        /// </summary>
        public static string CalculatedChannelFileExtension
        {
            get => _CalculatedChannelFileExtension.Value;
            private set => _CalculatedChannelFileExtension.Value = value;
        }
        private static readonly Property<string> _CalculatedChannelFileExtension = new Property<string>("CalculatedChannelFileExtension", ".cchn", true);

        /// <summary>
        /// The string that separates the channel numbers from the riffraff.
        /// </summary>
        private const string ChannelNumberDelimiter = ".";

        /// <summary>
        /// Extract the channel number from the specified channel filename.
        /// </summary>
        /// 
        /// <param name="channelFileName">
        /// The channel filename <see cref="string"/> to be converted into a channel number.
        /// </param>
        /// 
        /// <returns>
        /// The <see cref="int"/> channel number represented by the specified file.
        /// </returns>
        /// 
        public override int GetChannelNumberFromChannelFileName(string channelFileName)
        {
            try
            {
                var indexOfExtension = channelFileName.LastIndexOf(ChannelFileExtension);
                if (indexOfExtension == -1)
                {
                    indexOfExtension = channelFileName.LastIndexOf(ChannelFileExtension.ToLower());
                }
                var indexOfFirstChannelNumberCharacter = indexOfExtension - 3; //901, 001, etc. but could be _C001 (not a problem)
                var intResult = -1;
                int.TryParse(channelFileName.Substring(indexOfFirstChannelNumberCharacter, 3), out intResult);
                return intResult;
            }
            catch (System.Exception ex)
            {
                throw new Exception("encountered problem getting channel number from channel file name", ex);
            }
        }
    }
}