#!/usr/bin/perl
# Author: Alan J. Pippin
# Description: Find videos from a watched dir and move them to the video processing destination directory

use File::Copy;
use File::Basename;
use Getopt::Std;
use File::stat;
use Time::localtime;
use File::Pid;

####################################################################################################
# Configuration parameters
$mydir = `cd \$(dirname $0) 2>/dev/null; pwd`; chomp($mydir); unshift @INC,("$mydir");
# Default configuration values
require "organize_videos.conf";
# Override defaults with local customizations
if( -f "$mydir/organize_videos.conf.local") { require "organize_videos.conf.local"; }

####################################################################################################

# Sanity check
if(! -d $srcpathname) { print "-E- Can't find srcpath: $srcpathname\n"; exit 1; }
if(! -d $watchpathname) { print "-E- Can't find watchpath: $watchpathname\n"; exit 1; }

getopts("hfvt");

sub usage {
    print "usage: $0 [-v] [-t]\n";
    print "   -v        verbose; print file being moved (to).\n";
    print "   -f        force it to run by ignoring the \$minage setting in organize_videos.conf\n";
    print "   -t        test; print what will happen, but don't do anything\n";
    return 1;
}

# Sanity checks / Option processing
if(defined $opt_h) { usage(); exit 1; }

# Our srcpathname is actually our dstpathname
$find_changed_cmd =~ s/$srcpathname/$watchpathname/g;
$find_cmd_with_mkv =~ s/$srcpathname/$watchpathname/g;
$dstpathname = $srcpathname;
$srcpathname = $watchpathname;

# Only proceed if no files have changed in the past $cmin minutes
$changed_files_found=`$find_changed_cmd`;
if(!$opt_f && $changed_files_found) { exit 0; }

# Only proceed if there are video files to organize
$video_files_found=`$find_cmd_with_mkv`;
if(!$video_files_found) { exit 0; }

# Only one instance of this script running at a time
my $pidfile = File::Pid->new({file => "$pid_file", pid => "$$"});
print "pid_file: $pid_file\n" if($opt_v);
exit if $pidfile->running();
$pidfile->write();

# Print the date
system("date");

# Merge videos prior to copying them over to the destination path
my $errno = 0;

# Move the videos over to the destination path
chdir "$srcpathname";
print "$video_files_found\n" if($opt_v);
foreach $file (`$find_cmd_with_mkv`) {

    chomp($file);
    $srcdir = dirname($file);
    $file = basename($file);
    $srcfile = $file;
    $dstfile = "$dstpathname/$file";

    # only move files that have been organized
    if($srcfile !~ /\d\d\d\d-\d\d-\d\d/) { next; }
    
    print "-> Moving \"$srcdir/$srcfile\" to \"$dstfile\"\n";

    if(!defined $opt_t) {
	# Make sure the dstfile doesn't exist, if it does, don't do the move
	if(! -f "$dstfile") {
	    $errno=system("mv \"$srcdir/$srcfile\" \"$dstfile\" 2>/dev/null");
	    if($errno) { print "-E- Error moving srcfile to dstfile: $srcdir/$srcfile -> $dstfile\n"; next; }
	} else {
	    print "-> Skipping \"$srcdir/$srcfile\". Destfile \"$dstfile\" already exists.\n";
	}
	# Fix the permissions
	system("chown $owner \"$dstfile\"");
	system("chgrp $group \"$dstfile\"");
	system("chmod $mode \"$dstfile\"");
    }
}

$pidfile->remove();

print "\n\n";