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#!/usr/bin/perl -w

use Getopt::Long qw/:config noauto_abbrev nogetopt_compat no_ignore_case
                            permute bundling auto_version auto_help/;
use Pod::Usage;
use IMDB::Film;
use Locale::Language qw /code2language LOCALE_LANG_ALPHA_2
                                       LOCALE_LANG_ALPHA_3/;
use DBI;

use IPC::Open3;
use File::Basename qw /basename/;
use File::Spec::Functions;
use File::Copy qw /move/;
use Env qw /HOME/;
use Switch qw /Perl6/;
use strict;

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

# Configuration
my $confile = catfile ($HOME, '.videodb.rc');
die "Error: Can't read `" .$confile. "'.\n" unless -f $confile;
my %config = do $confile;
die "Error in `" .$confile. "'.\n" if $@ || not %config;

map { exists $config{$_} || die "Error: Missing `${_}'.\n" }
    qw /videodir driver database hostname user port password videodata
        imdb url/;

my $symlinks  = catdir($config{videodir},'MOVIES');    # Symlinks folder
die "Error: No such directory: `" .$symlinks. "'.\n" unless -d $symlinks;

my $directors = catdir($config{videodir},'DIRECTORS'); # Directors folder
die "Error: No such directory: `" .$directors. "'.\n" unless -d $symlinks;

my %imdb = ( host => $config{imdb}, debug => 0 );
$config{url} =~ s/\/*$//;

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

# videoadd [--seen] [--dont-sort] [--search=(title|imdbid)]
#   [-o title=...] [ -o year=...]
#   file

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

my $ignoredb_flag;
my $sort_flag = 1;
my %options;
GetOptions( "seen"      => sub { $options{seen} = 1 }
          , "s|search=s"=> sub { $imdb{crit} = $_[1] }
#          , "u|update=s"=> update id/filename
          , "o=s"       => sub { my ($k,$v) = split /=/, $_[1], 2;
                                 $options{lc $k} = $v; }
          , "dont-sort" => sub { undef $sort_flag }
          , "ignore-db" => \$ignoredb_flag
          , "q|quiet=s" => sub { open LOG, '>', '/dev/null'
                                 or die "Cannot open `/dev/null': $!" }
          , "man"       => sub { pod2usage(-exitstatus => 0, -verbose => 2) }
          )
    or  pod2usage(2);
pod2usage(2) if $#ARGV != 0;
*LOG = *STDERR unless defined (fileno LOG);

my $file = $ARGV[0];
my %new;


################################################################################
# Connection to the database

my $dbh;
unless ( defined $ignoredb_flag ) {
    # Connect to database
    my $dsn = "DBI:$config{driver}:database=$config{database};host=$config{hostname};port=$config{port}";
    $dbh = DBI->connect($dsn, $config{user}, $config{password})
             or die "Error: Can't connect do database.\n";
    $dbh->do( "SET NAMES UTF8" ) or die "Error: Can't set names to UTF-8.\n";
}


################################################################################
# Look on-line for information on the movie

if (defined $imdb{crit}) {
    # Look up the title/ID on IMDB

    my $single;
    my $movie;

    do {
        # Bug, see https://rt.cpan.org/Public/Bug/Display.html?id=71429
        open my $STDOUT, '>&', \*STDOUT or die "Can't dup: $!";
        open STDOUT, '>', '/dev/null' or die "Cannot open `/dev/null': $!";
        $movie = new IMDB::Film(%imdb);
        close STDOUT or die "Can't close";
        open STDOUT, '>>&', $STDOUT or die "Cannot open: $!";
        die "Something wrong happened: " .$movie->error. "\n"
            unless $movie->status;
        
        my @matches = @{$movie->matched};
        if (@matches) {
            # Got several results; Print them, and ask the user to pick up an ID
            die "No result found.\n" unless defined $matches[0]->{id};
    
            $imdb{crit} = $matches[0]->{id};
    
            foreach ( @matches ) {
                print $_->{id}. ' - ' .$_->{title}. "\n"
                    or die "Can't print: $!";
            }
            for (my $i=0; $i<72; $i++) {print '=' or die "Can't print: $!"};
            print "\n" or die "Can't print: $!";
    
            print "Choose an ID above: [$matches[0]->{id}] "
                or die "Can't print: $!";
            if ( <STDIN> =~ /(.+)/ ) { $imdb{crit} = $1 };
        }
        else {
            $single = 1;
        }
    } until defined $single;

    # Got a single result; Process the movie
    $new{title}    = $movie->title();
    $new{language} = lc join (', ', @{$movie->language()});
    $new{imdbid}   = $movie->id();
    $new{year}     = $movie->year();
    $new{imgurl}   = $movie->cover();
    $new{director} = join ', ', map {$_->{name}} @{$movie->directors()};
    $new{actors}   = join "\n", map {$_->{name}. '::' .$_->{role}. '::imdb:' .$_->{id}}
                                    @{$movie->cast()};
    $new{country}  = join ', ', @{$movie->country()};
    $new{plot}     = $movie->storyline();
    $new{rating}   = $movie->rating(); # Ignoring #votes and awards

    $new{istv}     = 1 if $movie->kind() =~ /tv/;
}
elsif (defined $file) {
    # Fill in at least the title, based on the file name...
    $new{title} = basename ($file);
    $new{title} =~ s/.(avi|ogm|ogg|bin|mpe?g|ra?m|mov|asf|wmv|mkv)$//i;
}


# Override imdDB's information with the ones provided
foreach (keys %options) {
    $new{$_} = $options{$_};
}


################################################################################
# Run mplayer on the given file to get A/V codecs, etc.

if ( defined($file) ) {
    $new{filename} = basename ($file);
    $new{filesize} = (stat $file)[7];
    $new{filedate} = (stat $file)[9]; # Last modify time in seconds since epoch
    
    
    my @cmd = ('mplayer', '-identify',
                          '-ao', 'null', '-vo', 'null', '-frames', '0',
                          $file);
    open NULL, '+<', '/dev/null' or die "Can't open `/dev/null': $!";
    open3 '<&NULL', my $OUT, ">&NULL", @cmd or die "Can't run mplayer";
    
    
    my (@alang, @slang);
    foreach my $line (<$OUT>) {
        next unless $line =~ m/^ID_/;
        chomp $line;
    
        if ( $line =~ m/^ID_VIDEO_FORMAT=(.*)/ ) {
            $new{video_codec} = &video_codec($1);
        }
        elsif ( $line =~ m/^ID_AUDIO_FORMAT=(.*)/ ) {
            $new{audio_codec} = &audio_codec($1);
        }
        elsif ( $line =~ m/^ID_VIDEO_WIDTH=(.*)/ ) {
            $new{video_width} = $1;
        }
        elsif ( $line =~ m/^ID_VIDEO_HEIGHT=(.*)/ ) {
            $new{video_height} = $1;
        }
        elsif ( $line =~ m/^ID_LENGTH=(.*)/ ) {
            $new{runtime} = $1;
            die "I won't mess up the db with your crappy empty movie.\n"
                if $new{runtime} =~ /^0*\.?0*$/;
            $new{runtime} = sprintf "%d", $new{runtime}/60;
        }
        elsif ( $line =~ m/^ID_AID_\d+_LANG=(.*)/ ) {
            push @alang, &code2lang ($1);
        }
        elsif ( $line =~ m/^ID_SID_\d+_LANG=(.*)/ ) {
            push @slang, &code2lang ($1);
        }
    };
    $new{language} = lc join (', ', @alang)
        unless $#alang < 0 and defined $imdb{crit};
    $new{custom1}  = lc join (', ', @slang);
}


################################################################################
# Insertion into the database

unless ( defined $ignoredb_flag ) {
    my $INSERT = "INSERT INTO $config{videodata}
                  SET mediatype = 14";
    if (defined $new{filedate}) {
        $INSERT .= ", filedate = FROM_UNIXTIME($new{filedate})";
        delete $new{filedate};
    }

    while (my ($k,$v) = each %new) {
        $INSERT .= ", " .$k. " = " .$dbh->quote ($v);
    }
    $dbh->do($INSERT) or die "Can't insert: $!\n";
#     print $INSERT, "\n";
    
    my $ids = $dbh->selectall_arrayref ( "SELECT id FROM $config{videodata}
                                          WHERE filename = ? ",
                                         undef, $new{filename} );
    if ($#$ids == 0) {
        print LOG "Check it out! ",
                  $config{url}, "/show.php?id=", $ids->[0]->[0], "\n"
            or die "Can't print: $!";
    }
    else {
        warn "Warning: Something weird happened during the INSERT.\n";
    }

    $dbh->disconnect;
}



################################################################################
# Sort the file

if ( defined ($file) and defined ($sort_flag) ) {
    if (defined $new{director}) {
        move ( $file, catfile ( $directors, $new{director}, $new{filename} ) )
            or warn "Warning: Cannot move file: $!.\n";

        symlink catfile( updir(), 'DIRECTORS', $new{director}, $new{filename} ),
                catfile( $symlinks, $new{filename} )
            or warn "Warning: Cannot create symlink: $!.\n";
    }
    else {
        warn "Warning: Cannot move file (no director found).\n"
    }
}


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


exit 0;
# Useless, but Perl doesn't see that this filehandle is used more than once
close NULL; # Automatically closed by `open3'


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


# Transform codec codes into proper names
# TODO: Find more codes
sub video_codec {
    given ($_[0]) {
        when /^0x10000001$/i  { return 'MPEG-1'; }
        when /^0x10000002$/i  { return 'MPEG-2'; }
        when /^(MPG4|MP4V)$/i { return 'MPEG-4'; }
        when /^MP42$/i        { return 'MS MPEG-4 v2'; }
        when /^MP43$/i        { return 'MS MPEG-4 v3'; }
        when /^div3$/i        { return 'DivX3'; }
        when /^DIV(4|X)$/i    { return 'DivX4'; }
        when /^DX50$/i        { return 'DivX5'; }
        when /^XVID$/i        { return 'XviD'; }
        when /^(avc1|H264)$/i { return 'H.264'; }
        when /^VP62$/i        { return 'VP6'; }
        when /^RV40$/i        { return 'rv40'; }
        default               { return $_[0]; }
    }
}

sub audio_codec {
    given ($_[0]) {
        when /^1$/i     { return 'PCM'; }
        when /^2$/i     { return 'MS ADPCM'; }
        when /^85$/i    { return 'MP3'; }
        when /^8192$/i  { return 'AC-3'; }
        when /^353$/i   { return 'WMA v2'; }
        when /^MP4A$/i  { return 'AAC'; }
        when /^22127$/i { return 'Vorbis'; }
        default         { return $_[0]; }
    }
}


# Convert ISO 639 language codes into full names
sub code2lang {
    my $code = $_[0];
    my $lang;
    $lang = code2language ($code, LOCALE_LANG_ALPHA_2);
    return $lang if defined $lang;
    $lang = code2language ($code, LOCALE_LANG_ALPHA_3);
    return $lang if defined $lang;
    return $code;
}