<?php

/*

Plugin Name: Social

Plugin URI: http://mailchimp.com/social-plugin-for-wordpress/

Description: Broadcast newly published posts and pull in discussions using integrations with Twitter and Facebook. Brought to you by <a href="http://mailchimp.com">MailChimp</a>.

Version: 2.6

Author: Crowd Favorite

Author URI: http://crowdfavorite.com/

*/

if (!class_exists('Social')) { // try to avoid double-loading...

/**

 * Social Core

 *

 * @package Social

 */

final class Social {

	/**

	 * @var  string  URL of the API

	 */

	public static $api_url = 'https://sopresto.mailchimp.com/';

	/**

	 * @var  string  version number

	 */

	public static $version = '2.6';

	/**

	 * @var  string  CRON lock directory.

	 */

	public static $cron_lock_dir = null;

	/**

	 * @var  string  plugins URL

	 */

	public static $plugins_url = '';

	/**

	 * @var  string  plugins file path

	 */

	public static $plugins_path = '';

	/**

	 * @var  bool  loaded by theme?

	 */

	public static $loaded_by_theme = false;

	/**

	 * @var  string  duplicate comment message

	 */

	public static $duplicate_comment_message = 'duplicate comment';

	/**

	 * @var  Social_Log  logger

	 */

	private static $log = null;

	/**

	 * @var  array  default options

	 */

	protected static $options = array(

		'debug' => false,

		'install_date' => 0,

		'installed_version' => 0,

		'broadcast_format' => '{title}: {content} {url}',

		'comment_broadcast_format' => '{content} {url}',

		'system_cron_api_key' => null,

		'fetch_comments' => '1',

		'broadcast_by_default' => '0',

		'use_standard_comments' => '0',

	);

	/**

	 * @var  Social  instance of Social

	 */

	public static $instance = null;

	/**

	 * Loads the instance of Social.

	 *

	 * @static

	 * @return Social

	 */

	public static function instance() {

		if (self::$instance === null) {

			self::$instance = new self;

		}

		return self::$instance;

	}

	/**

	 * Handles the auto loading of classes.

	 *

	 * @static

	 *

	 * @param  string  $class

	 *

	 * @return bool

	 */

	public static function auto_load($class) {

		if (substr($class, 0, 7) == 'Social_' or substr($class, 0, 7) == 'Kohana_') {

			try {

				$file = Social::$plugins_path.'lib/'.str_replace('_', '/', strtolower($class)).'.php';

				$file = apply_filters('social_auto_load_file', $file, $class);

				if (file_exists($file)) {

					require $file;

					return true;

				}

				return false;

			}

			catch (Exception $e) {

				Social::log(sprintf(__('Failed to auto load class %s.', 'social'), $class));

			}

		}

		return true;

	}

	/**

	 * Returns the broadcast format tokens.

	 *

	 * Format:

	 *

	 *     {key} => __('Description', 'social')

	 *

	 * @static

	 * @return array

	 */

	public static function broadcast_tokens() {

		$query = new WP_Query(array(

			'posts_per_page' => 1

		));

		if (count($query->posts) and $post = $query->posts[0]) {

			$url = wp_get_shortlink($post->ID);

			$date = get_date_from_gmt($post->post_date_gmt);

		}

		else {

			$url = home_url('?p=123');

			$date = get_date_from_gmt(current_time('mysql', true));

		}

		$defaults = array(

			'{url}' => sprintf(__('Example: %s', 'social'), $url),

			'{title}' => '',

			'{content}' => '',

			'{date}' => sprintf(__('Example: %s', 'social'), $date),

			'{author}' => '',

		);

		return apply_filters('social_broadcast_tokens', $defaults);

	}

	/**

	 * Returns the comment broadcast format tokens.

	 *

	 * Format:

	 *

	 *     {key} => __('Description', 'social')

	 *

	 * @static

	 * @return mixed

	 */

	public static function comment_broadcast_tokens() {

		$defaults = array(

			'{content}' => '',

			'{url}' => '',

		);

		return apply_filters('social_comment_broadcast_tokens', $defaults);

	}

	/**

	 * Sets or gets an option based on the key defined.

	 *

	 * Get Format:

	 *

	 *     Running Social::option('option_name') will load "social_option_name" using get_option()

	 *

	 * Set Format:

	 *

	 *     Running Social::option('option_name', 'new_value') will update "social_option_name" to "new_value"

	 *     using update_option().

	 *

	 * @static

	 * @param  string  $key     option key

	 * @param  mixed   $value   option value

	 * @return bool|mixed

	 * @uses get_option()

	 * @uses update_option()

	 */

	public static function option($key, $value = null) {

		if ($value === null) {

			$default = null;

			if (isset(Social::$options[$key])) {

				$default = Social::$options[$key];

			}

			return get_option('social_'.$key, $default);

		}

		update_option('social_'.$key, $value);

		return false;

	}

	/**

	 * Add a message to the log.

	 *

	 * @static

	 * @param  string  $message    message to add to the log

	 * @param  array   $args       arguments to pass to the writer

	 * @param  string  $context    context of the log message

	 * @param  bool    $backtrace  show the backtrace

	 * @return void

	 */

	public static function log($message, array $args = null, $context = null, $backtrace = false) {

		Social::$log->write($message, $args, $context, $backtrace);

	}

	/**

	 * Sets the loaded by theme.

	 *

	 * @static

	 * @return void

	 */

	public static function social_loaded_by_theme() {

		self::$loaded_by_theme = true;

	}

	/**

	 * Sets the customer die handler.

	 *

	 * @static

	 * @param  string  $handler

	 * @return array

	 */

	public static function wp_die_handler($handler) {

		return array('Social', 'wp_comment_die_handler');

	}

	/**

	 * Don't actually die for aggregation runs.

	 *

	 * @static

	 * @param  string  $message

	 * @param  string  $title

	 * @param  array   $args

	 * @return mixed

	 */

	public static function wp_comment_die_handler($message, $title, $args) {

		if ($message == __('Duplicate comment detected; it looks as though you’ve already said that!')) {

			// Keep going

			throw new Exception(Social::$duplicate_comment_message);

		}

	}

	/**

	 * @var  bool  is Social enabled?

	 */

	private $_enabled = null;

	/**

	 * Returns an array of all of the services.

	 *

	 * Format of the data returned:

	 *

	 *     $services = array(

	 *         'twitter' => Social_Service_Twitter,

	 *         'facebook' => Social_Service_Facebook,

	 *         // ... any other services registered

	 *     )

	 *

	 * @return array

	 */

	public function services() {

		return $this->load_services();

	}

	/**

	 * Returns a service by access key.

	 *

	 * Loading a service:

	 *

	 *     $twitter = Social::instance()->service('twitter');

	 *

	 * @param  string  $key    service key

	 * @return mixed Social_Service|Social_Service_Twitter|Social_Service_Facebook|false

	 */

	public function service($key) {

		$services = $this->load_services();

		if (!isset($services[$key])) {

			return false;

		}

		return $services[$key];

	}

	/**

	 * Returns a service by comment type.

	 *

	 * Loading a service:

	 *

	 *     $twitter = Social::instance()->service_for_comment_type('social-twitter-rt');

	 *

	 * @param  string  $key    service key

	 * @return mixed  Social_Service|Social_Service_Twitter|Social_Service_Facebook|false

	 */

	public function service_for_comment_type($comment_type) {

		$services = $this->load_services();

		foreach ($services as $service) {

			if (in_array($comment_type, $service->comment_types())) {

				return $service;

			}

		}

		return false;

	}

	/**

	 * Initializes Social.

	 *

	 * @wp-action  init

	 * @return void

	 */

	public function init() {

		// Load the language translations

		if (Social::$loaded_by_theme) {

			$path = trailingslashit(Social::$plugins_path).'lang';

			load_theme_textdomain('social', $path);

		}

		else {

			$plugin_dir = basename(dirname(SOCIAL_FILE)).'/lang';

			load_plugin_textdomain('social', false, $plugin_dir);

		}

		if (version_compare(PHP_VERSION, '5.2.4', '<')) {

			deactivate_plugins(basename(__FILE__)); // Deactivate ourself

			wp_die(__("Sorry, Social requires PHP 5.2.4 or higher. Ask your host how to enable PHP 5 as the default on your servers.", 'social'));

		}

		// Just activated?

		if (!Social::option('install_date')) {

			Social::option('install_date', current_time('timestamp', 1));

			Social::option('system_cron_api_key', wp_generate_password(16, false));

		}

		// Plugins URL

		$url = plugins_url('', SOCIAL_FILE);

		Social::$plugins_url = trailingslashit(apply_filters('social_plugins_url', $url));

		Social::$plugins_path = trailingslashit(apply_filters('social_plugins_path', SOCIAL_PATH));

		// Set the logger

		Social::$log = Social_Log::factory();

		// Require Facebook and Twitter by default.

		require Social::$plugins_path.'social-twitter.php';

		require Social::$plugins_path.'social-facebook.php';

	}

	/**

	 * Auth Cookie expiration for API users.

	 *

	 * @return int

	 */

	public function auth_cookie_expiration() {

		return 31536000; // 1 Year

	}

	/**

	 * Enqueues the assets for Social.

	 *

	 * @wp-action  wp_enqueue_scripts

	 * @wp-action  load-post-new.php

	 * @wp-action  load-post.php

	 * @wp-action  load-profile.php

	 * @wp-action  load-settings_page_social

	 * @return void

	 */

	public function enqueue_assets() {

		if (Social::option('use_standard_comments') == '1') {

			return;

		}

		// JS/CSS

		if (!defined('SOCIAL_COMMENTS_JS')) {

			define('SOCIAL_COMMENTS_JS', Social::$plugins_url.'assets/social.js');

		}

		if (SOCIAL_COMMENTS_JS !== false) {

			wp_enqueue_script('jquery');

			wp_enqueue_script('social_js', SOCIAL_COMMENTS_JS, array('jquery'), Social::$version, true);

			wp_localize_script('social_js', 'Sociali18n', array(

				'commentReplyTitle' => __('Post a Reply', 'social'),

			));

		}

		if (!is_admin()) {

			if (!defined('SOCIAL_COMMENTS_CSS')) {

				define('SOCIAL_COMMENTS_CSS', Social::$plugins_url.'assets/comments.css');

			}

			if (SOCIAL_COMMENTS_CSS !== false) {

				wp_enqueue_style('social_comments', SOCIAL_COMMENTS_CSS, array(), Social::$version, 'screen');

			}

		}

	}

	/**

	 * Enqueues the assets for Social.

	 *

	 * @wp-action  admin_enqueue_scripts

	 * @return void

	 */

	public function admin_enqueue_assets() {

		if (!defined('SOCIAL_ADMIN_JS')) {

			define('SOCIAL_ADMIN_JS', Social::$plugins_url.'assets/admin.js');

		}

		if (!defined('SOCIAL_ADMIN_CSS')) {

			define('SOCIAL_ADMIN_CSS', Social::$plugins_url.'assets/admin.css');

		}

		if (SOCIAL_ADMIN_CSS !== false) {

			wp_enqueue_style('social_admin', SOCIAL_ADMIN_CSS, array(), Social::$version, 'screen');

		}

		if (SOCIAL_ADMIN_JS !== false) {

			wp_enqueue_script('social_admin', SOCIAL_ADMIN_JS, array(), Social::$version, true);

			$data = apply_filters('social_admin_js_strings', array(

				'protectedTweet' => __('Protected Tweet', 'social'),

				'invalidUrl' => __('Invalid URL', 'social'),

			));

			wp_localize_script('social_admin', 'socialAdminL10n', $data);

		}

	}

	/**

	 * Loads the services on every page if the user is an admin.

	 *

	 * @wp-action  admin_init

	 * @return void

	 */

	public function admin_init() {