mixiエコーのスクリプトをオブジェクトの書き方にしてみた

オブジェクト指向の勉強のひとつで、以前自分が書いたmixiエコーに投稿できるスクリプトがありますが、それをオブジェクトの形で書き換えてみました。
パッケージ名は、適当に「WWW::Mixi::Echo」にしてみました。

package WWW::Mixi::Echo;

use strict;
use warnings;

use LWP::UserAgent;
use HTML::TreeBuilder;
use Data::Dumper;
use Encode;

{
    #各URL設定
    my $NEXT_URL = "/home.pl";
    my $LOGIN_URL = 'https://mixi.jp/login.pl';
    my $HOME_URL = 'http://mixi.jp/recent_echo.pl';
    my $ECHO_URL = 'http://mixi.jp/add_echo.pl';

    sub getNextUrl {
        $NEXT_URL
    };

    sub getLoginUrl {
        $LOGIN_URL
    };

    sub getHomeUrl {
        $HOME_URL;
    };

    sub getEchoUrl {
        $ECHO_URL
    };

}

sub new {
    my ($class, @arg) = @_;

    my $ua = new LWP::UserAgent();
    $ua->cookie_jar({});

    my $self = bless {
        _ua        => $ua,
        _next_url  => $class->getNextUrl,
        _login_url => $class->getLoginUrl,
        _home_url  => $class->getHomeUrl,
        _echo_url  => $class->getEchoUrl,
        _email     => $arg[0],
        _pwd       => $arg[1],
    }, $class;

    return $self;
}

sub login {
    my $self = shift;

    my $ua = $self->{ _ua };
    my $login_url = $self->{ _login_url };
    my $info = {
        next_url => $self->{ _next_url },
        email    => $self->{ _email },
        password => $self->{ _pwd },
    };

    my $res = $ua->post($login_url, $info);
    if($res->is_success){
        return 1;
    }else{
        return 0;
    }
}

sub getKey {
    my $self = shift;
    my $ua = $self->{ _ua };
    my $home_url = $self->{ _home_url };

    my $res_con = $ua->get($home_url);
    my $p = HTML::TreeBuilder->new_from_content($res_con->content);
    my @echo = $p->look_down(
        id => 'EchoComment',
    );

    my @post_key;
    for my $echo(@echo){
        @post_key = $echo->parent->parent->look_down(
            name => 'post_key',
        );
    }

    my $post_key;
    for my $key_body(@post_key){
        $post_key = $key_body->attr('value');
    }

    $self->{ _post_key } = $post_key;

}

sub postEcho{
    my $self = shift;
    my ($echo_comment) = @_;
    my $ua = $self->{ _ua };
    my $echo_url = $self->{ _echo_url };
    my $post_url = $self->{ _post_url };
    my $post_key = $self->{ _post_key };

    $echo_comment = encode('euc-jp',decode('utf-8',$echo_comment));
    my $post_info = {
        body => $echo_comment,
        x => 0,
        y => 0,
        redirect => 'home',
        post_key => $post_key,
    };

    my $post_res = $ua->post($echo_url => $post_info);
    if($post_res->is_success){
        #投稿成功
        return 0;
   }else{
       #投稿失敗
       return 1;
   }

}


一応、こんな感じで動きますが、こんなんでいいのかな????