#!/usr/bin/perl

#my $tag_matcher =
#    qr{
#        (\*[a-zA-Zа-яА-Я0-9_!?-]+)
#    }x;

my $nick_matcher =
    qr{
        (\@[a-zA-Z0-9-]{2,})
    }x;

my $post_matcher =
    qr{
        (\#[0-9]{6,}(/[0-9]{1,4})?)
    }x;

sub on_start {
    my ($term) = @_;

    $term->{have_Clipboard} = eval { require Clipboard; };
    if ($term->{have_Clipboard}) {
        import Clipboard;
    }

    $term->{juickopen} = $term->x_resource ("juickLauncher");

    ()
}

sub on_line_update {
    my ($term, $row) = @_;

    my $line = $term->line ($row);
    my $text = $line->t;

    while ($text =~ /\s($nick_matcher|$post_matcher)/g) {
        my $rend = $line->r;

        if ($term->x_resource ("underlineURLs") eq "true") {
           $_ |= urxvt::RS_Uline
           for @{$rend}[ $-[1] .. $+[1] - 1];
           $line->r ($rend);
        }
    }

    ()
}

#my $tag_mode_active = 0;
my $nick_mode_active = 0;
my $post_mode_active = 0;
my %mod = ( 'control' => 0, 'shift' => 0 );
my $url_selected = -1;
my @url_db = ();

#sub do_scan_for_tag {
#    my ($term) = @_;

#    @url_db = ();

#    my $row_start = $term->top_row;
#    my $row_end = $term->nrow;

#    for (my $row=$row_start; $row<=$row_end; $row++) {

#        my $line = $term->line ($row);
#        my $text = $line->t;

#        while ($text =~ /\s$tag_matcher/g) {
#            my $rend = $line->r;
#            my $url = $1;

#            my %h = ( 'row'      => $row,
#                      'col_from' => $-[1],
#                      'col_to'   => $+[1] - 1,
#                      'url'      => $url);
#            push @url_db, \%h;
#        }
#    }

#    return $#url_db + 1;
#}

sub do_scan_for_nick {
    my ($term) = @_;

    @url_db = ();

    my $row_start = $term->top_row;
    my $row_end = $term->nrow;

    for (my $row=$row_start; $row<=$row_end; $row++) {

        my $line = $term->line ($row);
        my $text = $line->t;

        while ($text =~ /\s($nick_matcher)/g) {
            my $rend = $line->r;
            my $url = $1;

            my %h = ( 'row'      => $row,
                      'col_from' => $-[1],
                      'col_to'   => $+[1] - 1,
                      'url'      => $url );
            push @url_db, \%h;
        }
    }

    return $#url_db + 1;
}

sub do_scan_for_post {
    my ($term) = @_;

    @url_db = ();

    my $row_start = $term->top_row;
    my $row_end = $term->nrow;

    for (my $row=$row_start; $row<=$row_end; $row++) {

        my $line = $term->line ($row);
        my $text = $line->t;

        while ($text =~ /\s($post_matcher)/g) {
            my $rend = $line->r;
            my $url = $1;

            my %h = ( 'row'      => $row,
                      'col_from' => $-[1],
                      'col_to'   => $+[1] - 1,
                      'url'      => $url );
            push @url_db, \%h;
        }
    }

    return $#url_db + 1;
}

sub on_user_command {
    my ($term, $cmd) = @_;

#    $cmd eq "juick:activate_tag_mode"
#        and activate_tag_mode($term);

    $cmd eq "juick:activate_nick_mode"
        and activate_nick_mode($term);

    $cmd eq "juick:activate_post_mode"
        and activate_post_mode($term);

    ()
}

sub on_key_press {
    my ($term, $event, $keysym, $octets) = @_;

#    $tag_mode_active && return 1;
    $nick_mode_active && return 1;
    $post_mode_active && return 1;

    ()
}

sub on_key_release {
    my ($term, $event, $keysym, $octets) = @_;

    if (($nick_mode_active) || ($post_mode_active)) {

        my $ch = chr($keysym);

        if (($keysym == 65307) || ($ch eq 'q')) {
            deactivate_mode ($term);
            return 1;

        } elsif (($keysym == 65293) || ($ch eq 'o')) {
           my $url = get_active_url($term);
           $term->exec_async ($term->{juickopen} . ' ' . $url);
           deactivate_mode ($term);
           return 1;

        } elsif (($ch eq 'j') || ($ch eq 'k')) {
           my $dir = ($ch eq 'j') ? 1 : -1;
           move_highlight ($term, $dir);

        } elsif ($ch eq 'y') {
            do_copy ($term);
            deactivate_mode ($term);
            return 1;

        } elsif ($ch eq 'a') {
           my $url = get_active_url($term);
           $url =~ s/&/\\&/g;
           ($term)->tt_write("$url ");
           deactivate_mode ($term);
           return 1;

        } elsif ($ch eq 'p') {
           my $url = get_active_url($term);
           $url =~ s/\/[0-9]*//;
           ($term)->tt_write("S $url");
           deactivate_mode ($term);
           return 1;

        } elsif ($ch eq 'u') {
           my $url = get_active_url($term);
           $url =~ s/\/[0-9]*//;
           ($term)->tt_write("U $url");
           deactivate_mode ($term);
           return 1;

        } elsif ($ch eq 'i') {
           my $url = get_active_url($term);
           $url =~ s/\/[0-9]*//;
           ($term)->tt_write("$url+");
           deactivate_mode ($term);
           return 1;

        } elsif ($ch eq 'r') {
           my $url = get_active_url($term);
           $url =~ s/\/[0-9]*//;
           ($term)->tt_write("! $url");
           deactivate_mode ($term);
           return 1;

        } elsif ($ch eq 'd') {
           my $url = get_active_url($term);
           $url =~ s/&/\\&/g;
           ($term)->tt_write("D $url");
           deactivate_mode ($term);
           return 1;
        }

        return 1;
    }

    ()
}

sub get_active_url {
    my ($term) = @_;
    my $max = $#url_db + 1;

    return if $url_selected < 0 || $url_selected >= $max;
    return if not defined $url_db[$url_selected];
    my $o = $url_db[$url_selected];
    my %h = %$o;

    return $h{url};
}

sub do_copy {
    my ($term) = @_;

    my $text = get_active_url ($term);

    if ($term->{have_Clipboard}) {
        Clipboard->copy($text);
    } else {
        $text =~ s/\(["|><&()]\)/\\$1/;
        system ("echo -n \"$text\" | xclip -i");
    }
}

sub move_highlight {
    my ($term, $dir) = @_;
    my $max = $#url_db + 1;

    do_highlight ($term, 0);

    $url_selected = ($max + $url_selected + $dir) % $max;

    do_highlight ($term, 1);

    $term->want_refresh;
}

sub do_highlight {
    my ($term, $enable) = @_;
    my $max = $#url_db + 1;

    return if $url_selected < 0 || $url_selected >= $max;
    return if not defined $url_db[$url_selected];

    my $o = $url_db[$url_selected];
    my %h = %$o;

    my $row = $h{row};
    my $line = $term->line ($row);
    my $text = $line->t;
    my $rend = $line->r;

    if ($enable) {
        $_ |= urxvt::RS_RVid
        for @{$rend}[ $h{col_from} .. $h{col_to}];

        # make it visible
        $term->view_start ( $row < 0 ? $row : 0 );
    } else {
        $_ &= ~urxvt::RS_RVid
        for @{$rend}[ $h{col_from} .. $h{col_to}];
    }

    $line->r ($rend);
}

#sub activate_tag_mode {
#    my ($term) = @_;

#    if ($tag_mode_active) {

#        move_highlight ($term, -1);

#    } elsif ( do_scan_for_tag ($term) ) {

#        $term->{save_view_start} = $term->view_start;
#        move_highlight ($term, 0);
#        $tag_mode_active=1 if ($url_selected > -1);
#    }
#}

sub activate_nick_mode {
    my ($term) = @_;

    if ($nick_mode_active) {

        move_highlight ($term, -1);

    } elsif ( do_scan_for_nick ($term) ) {

        $term->{save_view_start} = $term->view_start;
        move_highlight ($term, 0);
        $nick_mode_active=1 if ($url_selected > -1);
    }
}

sub activate_post_mode {
    my ($term) = @_;

    if ($post_mode_active) {

        move_highlight ($term, -1);

    } elsif ( do_scan_for_post ($term) ) {

        $term->{save_view_start} = $term->view_start;
        move_highlight ($term, 0);
        $post_mode_active=1 if ($url_selected > -1);

    }
}

sub deactivate_mode {
    my ($term) = @_;

    do_highlight ($term, 0);

    $nick_mode_active = 0;
#    $tag_mode_active = 0;
    $post_mode_active = 0;
    $url_selected = -1;

    $term->view_start ($term->{save_view_start});
    $term->want_refresh;
}