using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace MegaLogCombine
{
	class Program
	{
		static void Main( string[] args )
		{
			double timeStampOffset = 0;
			double currentTimeStamp = 0;

			int iLog = 0;
			int fieldCount = 0;

			foreach ( string arg in args )
			{
				string[] lines = File.ReadAllLines( arg, Encoding.ASCII );
				for ( int iLine = 0; iLine < lines.Length; ++iLine )
				{
					string line = lines[ iLine ];

					// strip out the first two lines of all logs besides the first
					if ( iLine < 2 )
					{
						if ( iLog == 0 )
							Console.WriteLine( line );

						continue;
					}

					// Don't want mark lines
					if ( line.Contains( "\"MARK" ) )
						continue;

					string[] fields = line.Split('\t');

					// don't do empty lines
					if ( fields == null || fields.Length < 1 )
						continue;

					if ( fieldCount == 0 )
						fieldCount = fields.Length;
					else if ( fieldCount != fields.Length )
						throw new System.FormatException( String.Format( "Found {0} fields, expected {1} fields, on line: {2}", fieldCount, fields.Length, line ) );

					double timeStamp;
					if ( !double.TryParse( fields[0], out timeStamp ) )
						throw new System.FormatException( String.Format( "Failed to parse timestamp from line {0}", line ) );

					currentTimeStamp = timeStamp + timeStampOffset;
					fields[ 0 ] = currentTimeStamp.ToString();

					StringBuilder builder = new StringBuilder();
					for ( int i = 0; i < fields.Length; ++i )
					{
						if ( i > 0 )
							builder.Append( '\t' );

						builder.Append( fields[i] );
					}

					Console.WriteLine( builder.ToString() );
				}
				timeStampOffset = currentTimeStamp;
				++iLog;
			}
		}
	}
}