#!/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 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 ( $filenamecsv =~ m/^G201_ID\d\d\d\d_DT\d\d\d\d_\d*$/i ) {    # G201
        my @strings = $filenamecsv =~
/(.{1,4})_(.{1,6})_(.{1,6})_(.{1,4})(.{1,2})(.{1,2})(.{1,2})(.{1,2})(.{1,2}).*/;
        $unittype = $strings[0];
        $unit     = $strings[1];
        $fileDate = $strings[3] . "/" . $strings[4] . "/" . $strings[5];
        $fileTime = $strings[6] . ":" . $strings[7] . ":" . $strings[8];
    }
    elsif ( $filenamecsv =~ m/^D2W_ID\d\d\d\d_DT\d\d\d\d$/i ) {
        my @strings = $filenamecsv =~ /(.{1,3})_(.{1,6})_(.{1,6}).*/;
        $unittype = $strings[0];
        $unit     = $strings[1];
    }
    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 $recvOKstr = "OK UPLOAD";
my $ext       = ".csv";

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, $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/\.[^.]*/ );
        $path   = "/home/" . $truser . "/";
        $trfile = "/home/" . $truser . $trfile;

        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 $filename =~ m/^G201_ID\d\d\d\d_DT\d\d\d\d_\d*$/i
                or $filename =~ m/^D2W_ID\d\d\d\d_DT\d\d\d\d$/i )
          )
        {
            my $unit = getUnitName($trfile);
            print getTimeStamp("log") . " >> Unit $unit - Filename $trfile\n";

            if ( !-d "$path/log" ) {
                make_path "$path/log",
                  { mode => 0755, owner => $truser, group => $gid }
                  or warn getTimeStamp("log")
                  . " >> Failed to create path: $path/log";
            }

            my $outpath = $path . $unit;
            if ( !-d "$outpath/SQL" ) {
                make_path "$outpath/SQL",
                  { mode => 0755, owner => $truser, group => $gid }
                  or warn getTimeStamp("log")
                  . " >> Failed to create path: $outpath/SQL";
            }

            if ( !-d "$outpath/config" ) {
                make_path "$outpath/config",
                  { mode => 0755, owner => $truser, group => $gid }
                  or warn getTimeStamp("log")
                  . " >> Failed to create path: $outpath/config";
            }

            my $timestamp = getTimeStamp();
            my $dest = $outpath . "/" . $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;
                if (
                    (
                        $filename =~
                        m/^(\d\d_\d\d\d\d_|)(DT\d\d\d\d|LOC\d.*|GD\d*)$/i
                        or $filename =~ m/^G201_ID\d\d\d\d_DT\d\d\d\d_\d*$/i
                        or $filename =~ m/^D2W_ID\d\d\d\d_DT\d\d\d\d$/i
                    )
                    and ( $unit ne 'ID9999' )
                    and ( $truser ne 'corra' )
                  )
                {
                    print getTimeStamp("log")
                      . " >> Sender user $truser: load data into DB.\n";
                    unless ( fork() ) {
                        setgid($gid);
                        setuid($uid);
                        $ENV{"HOME"} = 'home/' . $truser;
                        exec(   $scriptpath
                              . "LoadCSVData.pl -f \"$dest\" -s \"$outpath/SQL/$filename"
                              . "_"
                              . "$timestamp.sql\" -d $truser >> /home/$truser/log/loadcsvdata.log 2>&1"
                        );
                        exit(0);
                    }
                    if ( ( $truser ne 'aseftp' ) and ( $truser ne 'corra' ) ) {
                        print getTimeStamp("log")
                          . " >> Sender user $truser: duplicate as aseftp user -> load data into DB.\n";
                        my $realtruser = $truser;
                        $truser = "aseftp";
                        $outpath =~ s/$realtruser/$truser/;
                        my ( $login, $pass, $uid, $gid ) = getpwnam($truser)
                          or warn getTimeStamp("log")
                          . " >> $truser not in passwd file.\n";
                        unless ( fork() ) {
                            setgid($gid);
                            setuid($uid);
                            $ENV{"HOME"} = 'home/' . $truser;
                            exec(   $scriptpath
                                  . "LoadCSVData.pl -f \"$dest\" -s \"$outpath/SQL/$filename"
                                  . "_"
                                  . "$timestamp.sql\" -d $truser >> /home/$truser/log/loadcsvdata.log 2>&1"
                            );
                            exit(0);
                        }
                    }
                }
            }
        }
    }
}

exit(0);