SNS Count Cache 0.10.0 Pocket 仕様変更対応版

class-scc-share-pocket-strategy.php

<?php
/*
class-scc-share-pocket-strategy.php

Description: This class is abstract class of a data crawler
Author: Daisuke Maruyama
Author URI: http://marubon.info/
License: GPL2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.txt
*/

/*
Copyright (C) 2014 - 2016 Daisuke Maruyama

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

class SCC_Share_Pocket_Strategy extends SCC_Crawl_Strategy {

  /**
   * SNS base url
   */
  const DEF_BASE_URL = 'https://widgets.getpocket.com/v1/button';

  /**
   * Class constarctor
   * Hook onto all of the actions and filters needed by the plugin.
   *
   */
  protected function __construct() {
    SCC_Common_Util::log('[' . __METHOD__ . '] (line='. __LINE__ . ')');

    $this->method = 'GET';
    $this->query_parameters['v'] = '1';
    $this->query_parameters['count'] = 'vertical';
  }

  /**
   * Initialization
   *
   * @since 0.9.0
   */
  public function initialize( $options = array() ) {
    SCC_Common_Util::log( '[' . __METHOD__ . '] (line='. __LINE__ . ')' );

    if ( isset( $options['url'] ) ) $this->url = $options['url'];
    if ( isset( $options['method'] ) ) $this->method = $options['method'];
    if ( isset( $options['parameters'] ) ) $this->parameters = $options['parameters'];
  }

  /**
   * Build header
   *
   * @since 0.9.0
   */
  public function build_header() {
    SCC_Common_Util::log( '[' . __METHOD__ . '] (line='. __LINE__ . ')' );
    return null;
  }

  /**
   * Build query url
   *
   * @since 0.9.0
   */
  public function build_query_url() {
    SCC_Common_Util::log( '[' . __METHOD__ . '] (line='. __LINE__ . ')' );

    $url = self::DEF_BASE_URL . '?' . http_build_query( $this->query_parameters , '' , '&' );
    $this->query_parameters['src'] = $this->query_parameters['url'];

    return $url;
  }

  /**
   * Extract count
   *
   * @since 0.9.0
   */
  public function extract_count( $content ) {
    SCC_Common_Util::log( '[' . __METHOD__ . '] (line='. __LINE__ . ')' );

    $count = (int) -1;

    if ( isset( $content['data'] ) && empty( $content['error'] ) ) {

      $return_code = preg_match( '/<em\sid=\"cnt\">([0-9]+)<\/em>/i', $content['data'], $matches );

      if ( $return_code && isset( $matches[1] ) && is_numeric( $matches[1] ) ) {
        $count = (int) $matches[1];
      } else {
        $count = (int) -1;
      }
    } else {
      $count = (int) -1;
    }

    return $count;
  }

  /**
   * Check if required paramters are included or not.
   *
   * @since 0.9.0
   */
  public function check_configuration() {
    SCC_Common_Util::log( '[' . __METHOD__ . '] (line='. __LINE__ . ')' );

    if ( isset( $this->query_parameters['url'] ) && $this->query_parameters['url'] ) {
      return true;
    } else {
      return false;
    }
  }

}