#!/usr/bin/perl
use warnings;
use strict;
use Getopt::Long;
use File::SmartTail;
use File::Basename qw( fileparse );
use File::Path qw( make_path );
use File::Copy qw( move );
use Net::FTP;
use POSIX;
$SIG{CHLD} = 'IGNORE';

$|++;    # Autoflush

sub getTimeStamp
{        # parm [ts] => timestamp for filename; log => timestamp for log
    my $format = "%04d%02d%02d%02d%02d%02d";
    my ($p1) = @_;
    if ( defined $p1 and $p1 eq "log" ) {
        $format = "%04d%02d%02d %02d:%02d:%02d";
    }
    my ( $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst ) =
      localtime(time);
    my $timestamp =
      sprintf( $format, $year + 1900, $mon + 1, $mday, $hour, $min, $sec );
    return $timestamp;
}

sub getUnitName {    # parm => file received ($trfile)
    my ($filename) = @_;
    my ( $fileDate, $fileTime );
    my ( $unittype, $unit );
    my ( $filenamecsv, $path, $suffix ) = fileparse( $filename, qr/\.[^.]*/ );
    if ( $filenamecsv =~ m/^(\d\d_\d\d\d\d_|)(\d\d\d\d\d\d\d\d\d\d\d\d\d\d_)(G201_ID\d\d\d\d_DT\d\d\d\d)$/i ) { # GD201
        my @strings = $filenamecsv =~ /(.{1,4})(.{1,2})(.{1,2})(.{1,2})(.{1,2})(.{1,2})_(.{1,4})_(.{1,6})_(.{1,6}).*/;
        $fileDate = $strings[0] . "/" . $strings[1] . "/" . $strings[2];;
        $fileTime = $strings[3] . ":" . $strings[4] . ":" . $strings[5];
        $unittype = $strings[6];
        $unit = $strings[7];
    } else {
        open FILE, $filename
            or warn getTimeStamp("log") . " >> Error: opening input file $filename\n";
        ( $fileDate, $fileTime ) = split( /\s/, <FILE> );
        ( $unittype, $unit )     = split( /\s/, uc <FILE> );
        $unit =~ s/;+$//;
        close FILE;
    }
    return $unit;
}

my $readingFile;
my $ftpuser = "aseftp";
my $ftpuser1 = "asega";
my $recvOKstr = "OK UPLOAD";
my $ext = ".csv";
my $hostname = "160.78.21.55";
my $username = 'asega';
my $password = 'mums';

GetOptions( "file=s" => \$readingFile )
  or die("Error in command line arguments\n");

my($scriptname, $scriptpath) = fileparse($0);

my $tail = new File::SmartTail;
$tail->WatchFile( -file => $readingFile, -type => "UNIX", -timeout => '10' );

while ( my $line = $tail->GetLine() ) {
	if (((index($line, $ftpuser) != -1) or (index($line, $ftpuser1) != -1)) and (index($line, $recvOKstr) != -1)) {
		my (undef, undef, undef, $truser, undef, $trip, undef, $trfile, $trstat) = split(/[\"\[\]]/, $line);
		my ($login,$pass,$uid,$gid) = getpwnam($truser) or warn getTimeStamp("log") . " >> $truser not in passwd file.\n";

		my($filename, $path, $suffix) = fileparse($trfile, qr/\.[^.]*/);

		if ( ((uc $suffix) eq (uc $ext)) 
		        and
				( $filename =~ m/^(\d\d_\d\d\d\d_|)(DT\d\d\d\d|LOC\d*|GD\d*)$/i 
					or $filename =~ m/^(\d\d_\d\d\d\d_|)(\d\d\d\d\d\d\d\d\d\d\d\d\d\d_)(G201_ID\d\d\d\d_DT\d\d\d\d)$/i) )
			{
			my $unit = getUnitName($trfile);
			print getTimeStamp("log") . " >> Unit $unit - Filename $trfile\n";
			my $outpath = $path . $unit . "/received";
			my $trnpath = $path . $unit . "/transmitted";
			if ( !-d "$outpath" ) {
				make_path "$outpath" , {mode => 0755, owner=>$truser, group=>$truser} or warn getTimeStamp("log") . " >> Failed to create path: $outpath";
			}
			if ( !-d "$trnpath" ) {
				make_path "$trnpath" , {mode => 0755, owner=>$truser, group=>$truser} or warn getTimeStamp("log") . " >> Failed to create path: $trnpath";
			}
			my $timestamp = getTimeStamp();
			my $dest = $outpath . "/" . $filename . "_". $timestamp . $suffix;
			my $send = $trnpath . "/" . $filename . "_". $timestamp . $suffix;
			if ( !move $trfile, $dest) {
				warn getTimeStamp("log") . " >> Move $trfile -> $dest failed: $!";
			} else {
				print getTimeStamp("log") . " >> Moved $trfile -> $dest.\n";
				chmod 0664 , $dest;
				my @fname = ($dest);
				chown $uid, $gid, @fname;
			}
			my $ftp = Net::FTP->new($hostname, Timeout => 20, Debug => 0, Passive => 0)
			    or warn getTimeStamp("log") . " >> Cannot connect to $hostname: $@";
			if ($ftp->login($username,$password)) {
				if ($ftp->put($dest, $filename . $suffix)) {
					if ( !move $dest, $send) {
						warn getTimeStamp("log") . " >> Move $dest -> $send failed: $!";
					} else {
						print getTimeStamp("log") . " >> Moved $dest -> $send.\n";
					}
				} else {
					warn getTimeStamp("log") . " >> Put $dest failed ", $ftp->message;
				}
			} else {
				warn getTimeStamp("log") . " >> Cannot login ", $ftp->message;
			}
		}
	}
}

exit(0);