<?php

abstract class Sharing_Source {
	public    $button_style;
	public    $smart;
	protected $open_links;
	protected $id;
	
	public function __construct( $id, array $settings ) {
		$this->id = $id;

		if ( isset( $settings['button_style'] ) )
			$this->button_style = $settings['button_style'];

		if ( isset( $settings['open_links'] ) )
			$this->open_links = $settings['open_links'];
		
		if ( isset( $settings['smart'] ) )
			$this->smart = $settings['smart'];
	}
	
	public function get_id() {
		return $this->id;
	}
	
	public function get_class() {
		return $this->id;
	}
	
	public function get_share_url( $post_id ) {
		return apply_filters( 'sharing_permalink', get_permalink( $post_id ), $post_id, $this->id );
	}

	public function has_custom_button_style() {
		return false;
	}
	
	public function get_link( $url, $text, $title, $query = '', $id = false ) {
		$klasses = array( 'share-'.$this->get_class(), 'sd-button' );
		
		if ( $this->button_style == 'icon' || $this->button_style == 'icon-text' )
			$klasses[] = 'share-icon';
		
		if ( $this->button_style == 'icon' ) {
			$text = '';
			$klasses[] = 'no-text';
		}
		
		if ( !empty( $query ) ) {
			if ( stripos( $url, '?' ) === false )
				$url .= '?'.$query;
			else
				$url .= '&amp;'.$query;
		}
			
		if ( $this->button_style == 'text' )
			$klasses[] = 'no-icon';

		return sprintf(
			'<a rel="nofollow" class="%s" href="%s"%s title="%s"%s><span>%s</span></a>',
			implode( ' ', $klasses ),
			$url,
			( $this->open_links == 'new' ) ? ' target="_blank"' : '',
			$title,
			( $id ? ' id="' . esc_attr( $id ) . '"' : '' ),
			$text
		);
	}

	abstract public function get_name();
	abstract public function get_display( $post );

	public function display_header() {
	}	
	
	public function display_footer() {
	}
	
	public function has_advanced_options() {
		return false;
	}
	
	public function display_preview() {
		$text = '&nbsp;';
		if ( !$this->smart )
			if ( $this->button_style != 'icon' )
				$text = $this->get_name();
		
		$klasses = array( 'share-'.$this->get_class(), 'sd-button' );
		
		if ( $this->button_style == 'icon' || $this->button_style == 'icon-text' )
			$klasses[] = 'share-icon';
		
		if ( $this->button_style == 'icon' )
			$klasses[] = 'no-text';
			
		if ( $this->button_style == 'text' )
			$klasses[] = 'no-icon';

		$link = sprintf(
			'<a rel="nofollow" class="%s" href="javascript:void(0);return false;" title="%s"><span>%s</span></a>',
			implode( ' ', $klasses ),
			$this->get_name(),
			$text
		);
		?>
		<div class="option option-smart-<?php echo $this->smart ? 'on' : 'off'; ?>">
		<?php echo $link; ?>
		</div><?php
	}

	public function get_total( $post = false ) {
		global $wpdb, $blog_id;
		
		$name = strtolower( $this->get_id() ); 
		
		if ( $post == false ) {
			// get total number of shares for service
			return (int) $wpdb->get_var( $wpdb->prepare( "SELECT SUM( count ) FROM sharing_stats WHERE blog_id = %d AND share_service = %s", $blog_id, $name ) );
		}
		
		// get total shares for a post
		return (int) $wpdb->get_var( $wpdb->prepare( "SELECT count FROM sharing_stats WHERE blog_id = %d AND post_id = %d AND share_service = %s", $blog_id, $post->ID, $name ) );
	}	
	
	public function get_posts_total() {
		global $wpdb, $blog_id;
		
		$totals = array();
		$name   = strtolower( $this->get_id() ); 
		
		$my_data = $wpdb->get_results( $wpdb->prepare( "SELECT post_id as id, SUM( count ) as total FROM sharing_stats WHERE blog_id = %d AND share_service = %s GROUP BY post_id ORDER BY count DESC ", $blog_id, $name ) );
		
		if ( !empty( $my_data ) )
			foreach( $my_data as $row )
				$totals[] = new Sharing_Post_Total( $row->id, $row->total );
		
		usort( $totals, array( 'Sharing_Post_Total', 'cmp' ) );
		
		return $totals;
	}
	
	public function process_request( $post, array $post_data ) {
		do_action( 'sharing_bump_stats', array( 'service' => $this, 'post' => $post ) );
	}
	
	public function js_dialog( $name, $params = array() ) {
		$defaults = array(
			'menubar'   => 1,
			'resizable' => 1,
			'width'     => 600,
			'height'    => 400,
		);
		$params = array_merge( $defaults, $params );
		$opts = array();
		foreach( $params as $key => $val ) {
			$opts[] = "$key=$val";
		}
		$opts = implode( ',', $opts );
		?>
		<script type="text/javascript" charset="utf-8">
		jQuery(document).ready(function(){
			jQuery( '.share-<?php echo $name; ?>' ).click(function(){
				window.open( jQuery(this).attr( 'href' ), 'wpcom<?php echo $name; ?>', '<?php echo $opts; ?>' );
				return false;
			});
		});
		</script>
		<?php
	}
}

abstract class Sharing_Advanced_Source extends Sharing_Source {
	public function has_advanced_options() {
		return true;
	}
	
	abstract public function display_options();
	abstract public function update_options( array $data );
	abstract public function get_options();
}


class Share_Email extends Sharing_Source {
	var $shortname = 'email';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Email', 'jetpack' );
	}

	// Default does nothing	
	public function process_request( $post, array $post_data ) {
		$ajax = false;
		if ( isset( $_SERVER['HTTP_X_REQUESTED_WITH'] ) && strtolower( $_SERVER['HTTP_X_REQUESTED_WITH'] ) == 'xmlhttprequest' )
			$ajax = true;

		$source_email = $target_email = $source_name = false;

		if ( isset( $post_data['source_email'] ) && is_email( $post_data['source_email'] ) )
			$source_email = $post_data['source_email'];

		if ( isset( $post_data['target_email'] ) && is_email( $post_data['target_email'] ) )
			$target_email = $post_data['target_email'];
			
		if ( isset( $post_data['source_name'] ) )
			$source_name = $post_data['source_name'];
		
		// Test email
		$error = 1;   // Failure in data
		if ( $source_email && $target_email && $source_name ) {
			if ( apply_filters( 'sharing_email_check', true, $post, $post_data ) ) {
				$data = array(
					'post'   => $post,
					'source' => $source_email,
					'target' => $target_email,
					'name'   => $source_name
				);
				
				if ( ( $data = apply_filters( 'sharing_email_can_send', $data ) ) !== false ) {
					// Record stats
					parent::process_request( $data['post'], $post_data );

					do_action( 'sharing_email_send_post', $data );
				}
	
				// Return a positive regardless of whether the user is subscribed or not
				if ( $ajax ) {
?>
<div class="response">
	<div class="response-title"><?php _e( 'This post has been shared!', 'jetpack' ); ?></div> 
 	<div class="response-sub"><?php printf( __( 'You have shared this post with %s', 'jetpack' ), esc_html( $target_email ) ); ?></div> 
 	<div class="response-close"><a href="#" class="sharing_cancel"><?php _e( 'Close', 'jetpack' ); ?></a></div> 
</div>
<?php
				}
				else
					wp_safe_redirect( get_permalink( $post->ID ).'?shared=email' );

				die();
			}
			else
				$error = 2;   // Email check failed
		}
				
		if ( $ajax )
			echo $error;
		else
			wp_safe_redirect( get_permalink( $post->ID ).'?shared=email&msg=fail' );

		die();
	}
	
	public function get_display( $post ) {
		return $this->get_link( get_permalink( $post->ID ), _x( 'Email', 'share to', 'jetpack' ), __( 'Click to email this to a friend', 'jetpack' ), 'share=email' );
	}
	
	/**
	 * Outputs the hidden email dialog
	 */
	public function display_footer() {
		global $current_user;
		
		$visible = $status = false;
?>
	<div id="sharing_email" style="display: none;">
		<form action="" method="post">
			<label for="target_email"><?php _e( 'Send to Email Address', 'jetpack' ) ?></label>
			<input type="text" name="target_email" id="target_email" value="" />
			
			<?php if ( is_user_logged_in() ) : ?>
				<input type="hidden" name="source_name" value="<?php echo esc_attr( $current_user->display_name ); ?>" />
				<input type="hidden" name="source_email" value="<?php echo esc_attr( $current_user->user_email ); ?>" />
			<?php else : ?>

				<label for="source_name"><?php _e( 'Your Name', 'jetpack' ) ?></label>
				<input type="text" name="source_name" id="source_name" value="" />
				
				<label for="source_email"><?php _e( 'Your Email Address', 'jetpack' ) ?></label>
				<input type="text" name="source_email" id="source_email" value="" />

			<?php endif; ?>
			
			<?php do_action( 'sharing_email_dialog', 'jetpack' ); ?>

			<img style="float: right; display: none" class="loading" src="<?php echo apply_filters( 'jetpack_static_url', plugin_dir_url( __FILE__ ) . 'images/loading.gif' ); ?>" alt="loading" width="16" height="16" />
			<input type="submit" value="<?php _e( 'Send Email', 'jetpack' ); ?>" class="sharing_send" />
			<a href="#cancel" class="sharing_cancel"><?php _e( 'Cancel', 'jetpack' ); ?></a>
			
			<div class="errors errors-1" style="display: none;">
				<?php _e( 'Post was not sent - check your email addresses!', 'jetpack' ); ?>
			</div>

			<div class="errors errors-2" style="display: none;">
				<?php _e( 'Email check failed, please try again', 'jetpack' ); ?>
			</div>
			
			<div class="errors errors-3" style="display: none;">
				<?php _e( 'Sorry, your blog cannot share posts by email.', 'jetpack' ); ?>
			</div>
		</form>
	</div>
<?php
	}
}

class Share_Twitter extends Sharing_Source {
	var $shortname = 'twitter';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Twitter', 'jetpack' );
	}

	function sharing_twitter_via( $post ) {
		// Allow themes to customize the via
		return apply_filters( 'jetpack_sharing_twitter_via', '', $post->ID );
	}

	public function get_related_accounts( $post ) {
		// Format is 'username' => 'Optional description'
		$related_accounts = apply_filters( 'jetpack_sharing_twitter_related', array(), $post->ID );

		// Example related string: account1,account2:Account 2 description,account3
		$related = array();

		foreach ( $related_accounts as $related_account_username => $related_account_description ) {
			// Join the description onto the end of the username
			if ( $related_account_description )
				$related_account_username .= ':' . $related_account_description;

			$related[] = $related_account_username;
		}

		return implode( ',', $related );
	}

	public function get_display( $post ) {
		$via = $this->sharing_twitter_via( $post );

		if ( $via ) {
			$via = '&via=' . rawurlencode( $via );

			$related = $this->get_related_accounts( $post );
			if ( ! empty( $related ) && $related !== $via )
				$via .= '&related=' . rawurlencode( $related );
		} else {
			$via = '';
		}

		$share_url = $this->get_share_url( $post->ID );

		if ( $this->smart ) {
			return '<div class="twitter_button"><iframe allowtransparency="true" frameborder="0" scrolling="no" src="' . esc_url( 'http://platform.twitter.com/widgets/tweet_button.html?url=' . rawurlencode( $share_url ) . '&counturl=' . rawurlencode( str_replace( 'https://', 'http://', get_permalink( $post->ID ) ) ) . '&count=horizontal&text=' . rawurlencode( $post->post_title . ':' ) . $via ) . '" style="width:101px; height:20px;"></iframe></div>';
		} else {
			if ( 'icon-text' == $this->button_style || 'text' == $this->button_style )
				sharing_register_post_for_share_counts( $post->ID );
			return $this->get_link( get_permalink( $post->ID ), _x( 'Twitter', 'share to', 'jetpack' ), __( 'Click to share on Twitter', 'jetpack' ), 'share=twitter', 'sharing-twitter-' . $post->ID );
		}
	}
	
	public function process_request( $post, array $post_data ) {
		$post_title = $post->post_title;
		$post_link = $this->get_share_url( $post->ID );

		if ( function_exists( 'mb_stripos' ) ) {
			$strlen = 'mb_strlen';
			$substr = 'mb_substr';
		} else {
			$strlen = 'strlen';
			$substr = 'substr';
		}
		
		$via = $this->sharing_twitter_via( $post );
		if ( $via ) {
			$related = $this->get_related_accounts( $post );
			if ( $related === $via )
				$related = false;

			$sig     = " via @$via";
		} else {
			$via     = false;
			$related = false;
			$sig     = '';
		}

		$suffix_length = $strlen( " {$post_link}{$sig}" );

		// $sig is handled by twitter in their 'via' argument.
		// $post_link is handled by twitter in their 'url' argument.
		if ( 140 < $strlen( $post_title ) + $suffix_length ) {
			// The -1 is for "\xE2\x80\xA6", a UTF-8 ellipsis.
			$text = $substr( $post_title, 0, 140 - $suffix_length - 1 ) . "\xE2\x80\xA6";
		} else {
			$text = $post_title;
		}

		// Record stats
		parent::process_request( $post, $post_data );
		
		$url = $post_link;
		$twitter_url = add_query_arg(
			urlencode_deep( array_filter( compact( 'via', 'related', 'text', 'url' ) ) ),
			sprintf( '%s://twitter.com/intent/tweet', ( is_ssl() ? 'https' : 'http' ) )
		);

		// Redirect to Twitter
		wp_redirect( $twitter_url );
		die();
	}
	
	public function has_custom_button_style() {
		return $this->smart;
	}
	
	public function display_footer() {
		$this->js_dialog( $this->shortname, array( 'height' => 350 ) );
	}
}

class Share_Stumbleupon extends Sharing_Source {
	var $shortname = 'stumbleupon';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'StumbleUpon', 'jetpack' );
	}

	public function has_custom_button_style() {
		return $this->smart;
	}

	public function get_display( $post ) {
		if ( $this->smart )
			return '<div class="stumbleupon_button"><iframe src="http://www.stumbleupon.com/badge/embed/1/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&amp;title=' . rawurlencode( $post->post_title ) . '" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:74px; height: 18px;" allowTransparency="true"></iframe></div>';
		else
			return $this->get_link( get_permalink( $post->ID ), _x( 'StumbleUpon', 'share to', 'jetpack' ), __( 'Click to share on StumbleUpon', 'jetpack' ), 'share=stumbleupon' );
	}
	
	public function process_request( $post, array $post_data ) {
		$stumbleupon_url = 'http://www.stumbleupon.com/submit?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $post->post_title );
		
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Stumbleupon
		wp_redirect( $stumbleupon_url );
		die();
	}
}

class Share_Reddit extends Sharing_Source {
	var $shortname = 'reddit';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}

	public function get_name() {
		return __( 'Reddit', 'jetpack' );
	}

	public function get_display( $post ) {
		if ( $this->smart )
			return '<div class="reddit_button"><iframe src="http://www.reddit.com/static/button/button1.html?width=120&amp;url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&amp;title=' . rawurlencode( $post->post_title ) . '" height="22" width="120" scrolling="no" frameborder="0"></iframe></div>';
		else
			return $this->get_link( get_permalink( $post->ID ), __( 'Reddit', 'share to', 'jetpack' ), __( 'Click to share on Reddit', 'jetpack' ), 'share=reddit' );
	}	
	
	public function process_request( $post, array $post_data ) {
		$reddit_url = 'http://reddit.com/submit?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $post->post_title );
		
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Reddit
		wp_redirect( $reddit_url );
		die();
	}
}

class Share_Digg extends Sharing_Source {
	var $shortname = 'digg';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Digg', 'jetpack' );
	}

	public function has_custom_button_style() {
		return $this->smart;
	}

	public function get_display( $post ) {
		if ( $this->smart ) {
			$url = $this->get_link( 'http://digg.com/submit?url='. rawurlencode( $this->get_share_url( $post->ID ) ) . '&amp;title=' . rawurlencode( $post->post_title ), 'Digg', __( 'Click to Digg this post', 'jetpack' ) );
			return '<div class="digg_button">' . str_replace( 'class="', 'class="DiggThisButton DiggCompact ', $url ) . '</div>';
		} else {
			return $this->get_link( get_permalink( $post->ID ), _x( 'Digg', 'share to', 'jetpack' ), __( 'Click to Digg this post', 'jetpack' ), 'share=digg' );
		}
	}	
	
	public function process_request( $post, array $post_data ) {
		$digg_url = 'http://digg.com/submit?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $post->post_title );
		
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Digg
		wp_redirect( $digg_url );
		die();
	}
	
	public function display_header() {
		if ( $this->smart ) {
?>
<script type="text/javascript">
(function() {
	var s = document.createElement('SCRIPT'), s1 = document.getElementsByTagName('SCRIPT')[0];
	s.type = 'text/javascript';
	s.async = true;
	s.src = 'http://widgets.digg.com/buttons.js';
	s1.parentNode.insertBefore(s, s1);
})();
</script>
<?php
		}
	}
}

class Share_LinkedIn extends Sharing_Source {
	var $shortname = 'linkedin';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}

	public function get_name() {
		return __( 'LinkedIn', 'jetpack' );
	}

	public function has_custom_button_style() {
		return $this->smart;
	}

	public function get_display( $post ) {
		$share_url = $this->get_share_url( $post->ID );
		$display = '';
		
		if ( $this->smart )
			$display .= sprintf( '<div class="linkedin_button"><script type="in/share" data-url="%s" data-counter="right"></script></div>', esc_url( $share_url ) );
		else
			$display = $this->get_link( get_permalink( $post->ID ), _x( 'LinkedIn', 'share to', 'jetpack' ), __( 'Click to share on LinkedIn', 'jetpack' ), 'share=linkedin', 'sharing-linkedin-' . $post->ID );

		if ( 'icon-text' == $this->button_style || 'text' == $this->button_style )
			sharing_register_post_for_share_counts( $post->ID );

		return $display;
	}
	
	public function process_request( $post, array $post_data ) {

		setup_postdata( $post );

		$post_link = $this->get_share_url( $post->ID );

		// http://www.linkedin.com/shareArticle?mini=true&url={articleUrl}&title={articleTitle}&summary={articleSummary}&source={articleSource}

		$encoded_title = rawurlencode( $post->post_title );
		if( strlen( $encoded_title ) > 200 )
			$encoded_title = substr( $encoded_title, 0, 197 ) . '...';

		$encoded_summary = rawurlencode( strip_tags( get_the_excerpt() ) );
		if( strlen( $encoded_summary ) > 256 )
			$encoded_summary = substr( $encoded_summary, 0, 253 ) . '...';
	
		$source = get_bloginfo( 'name' );

		$linkedin_url = add_query_arg( array(
			'title' => $encoded_title,
			'url' => rawurlencode( $post_link ),
			'source' => rawurlencode( $source ),
			'summary' => $encoded_summary,
		), 'http://www.linkedin.com/shareArticle?mini=true' );
		
		// Record stats
		parent::process_request( $post, $post_data );

		// Redirect to LinkedIn
		wp_redirect( $linkedin_url );
		die();
	}
	
	public function display_footer() {
		if ( !$this->smart )
			$this->js_dialog( $this->shortname, array( 'width' => 580, 'height' => 450 ) );
		else
			echo '<script type="text/javascript" src="//platform.linkedin.com/in.js"></script>';
	}
}

class Share_Facebook extends Sharing_Source {
	var $shortname = 'facebook';
	private $share_type = 'default';
	
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( isset( $settings['share_type'] ) )
			$this->share_type = $settings['share_type'];
		
		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}

	public function get_name() {
		return __( 'Facebook', 'jetpack' );
	}
	
	public function display_header() {
	}
	
	function guess_locale_from_lang( $lang ) {
		if ( 'en' == $lang || 'en_US' == $lang || !$lang ) {
			return 'en_US';
		}

		if ( !class_exists( 'GP_Locales' ) ) {
			if ( !defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) || !file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) {
				return false;
			}

			require JETPACK__GLOTPRESS_LOCALES_PATH;
		}

		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
			// WP.com: get_locale() returns 'it'
			$locale = GP_Locales::by_slug( $lang );
		} else {
			// Jetpack: get_locale() returns 'it_IT';
			$locale = GP_Locales::by_field( 'wp_locale', $lang );
		}

		if ( !$locale || empty( $locale->facebook_locale ) ) {
			return false;
		}

		return $locale->facebook_locale;
	}

	public function get_display( $post ) {
		$share_url = $this->get_share_url( $post->ID );
		if ( $this->smart ) {
			$url = 'http://www.facebook.com/plugins/like.php?href=' . rawurlencode( $share_url ) . '&amp;layout=button_count&amp;show_faces=false&amp;action=like&amp;colorscheme=light&amp;height=21';
			
			// Default widths to suit English
			$inner_w = 90;
			
			// Locale-specific widths/overrides
			$widths = array(
				'bg_BG' => 120,
				'de_DE' => 100,
				'da_DK' => 120,
				'es_ES' => 110,
				'es_LA' => 110,
				'fi_FI' => 100,
				'it_IT' => 100,
				'ja_JP' => 100,
				'ru_RU' => 128,
			);

			$widths = apply_filters( 'sharing_facebook_like_widths', $widths );

			$locale = $this->guess_locale_from_lang( get_locale() );
			if ( $locale ) {
				if ( 'en_US' != $locale ) {
					$url .= '&amp;locale=' . $locale;
				}

				if ( isset( $widths[$locale] ) ) {
					$inner_w = $widths[$locale];
				}
			}

			$url .= '&amp;width='.$inner_w;
			return '<div class="like_button"><iframe src="'.$url.'" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:'.( $inner_w + 6 ).'px; height:21px;" allowTransparency="true"></iframe></div>';
		}
		
		if ( 'icon-text' == $this->button_style || 'text' == $this->button_style )
			sharing_register_post_for_share_counts( $post->ID );
		return $this->get_link( get_permalink( $post->ID ), _x( 'Facebook', 'share to', 'jetpack' ), __( 'Share on Facebook', 'jetpack' ), 'share=facebook', 'sharing-facebook-' . $post->ID );
	}
	
	public function process_request( $post, array $post_data ) {
		$fb_url = 'http://www.facebook.com/sharer.php?u=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&t=' . rawurlencode( $post->post_title );
		
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Facebook
		wp_redirect( $fb_url );
		die();
	}
	
	public function display_footer() {
		$this->js_dialog( $this->shortname );
	}
}

class Share_Print extends Sharing_Source {
	var $shortname = 'print';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Print', 'jetpack' );
	}

	public function get_display( $post ) {
		return $this->get_link( get_permalink( $post->ID ) . ( ( is_single() || is_page() ) ? '#print': '' ), _x( 'Print', 'share to', 'jetpack' ), __( 'Click to print', 'jetpack' ) );
	}
}

class Share_PressThis extends Sharing_Source {
	var $shortname = 'pressthis';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Press This', 'jetpack' );
	}

	public function process_request( $post, array $post_data ) {
		global $current_user;
		
		$blogs = get_blogs_of_user( $current_user->ID );
		if ( empty( $blogs ) ) {
			wp_safe_redirect( get_permalink( $post->ID ) );
			die();
		}
		
		$blog = current( $blogs );

		$url = $blog->siteurl.'/wp-admin/press-this.php?u='.rawurlencode( $this->get_share_url( $post->ID ) ).'&t='.rawurlencode( $post->post_title ).'&v=4';

		if ( isset( $_GET['sel'] ) )
			$url .= '&s='.rawurlencode( $_GET['sel'] );

		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Press This
		wp_safe_redirect( $url );
		die();
	}

	public function get_display( $post ) {
		return $this->get_link( get_permalink( $post->ID ), _x( 'Press This', 'share to', 'jetpack' ), __( 'Click to Press This!', 'jetpack' ), 'share=press-this' );
	}
}

class Share_GooglePlus1 extends Sharing_Source {
	var $shortname = 'googleplus1';
	private $state = false;

	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Google +1', 'jetpack' );
	}

	public function get_display( $post ) {
		// Smart or not, return the G+ button
		return '<div class="googleplus1_button"><g:plusone size="medium" callback="sharing_plusone" href="' . esc_url( $this->get_share_url( $post->ID ) ) . '"></g:plusone></div>';
	}
	
	public function display_preview() {
		?>
		<div class="option option-smart-on">
		<a href="javascript:void(0);return false;" class="share-<?php echo $this->shortname; ?>">
			<span></span>
		</a>
		</div><?php
	}
	
	public function get_state() {
		return $this->state;
	}
	
	public function process_request( $post, array $post_data ) {
		
		if ( isset( $post_data['state'] ) ) {
			$this->state = $post_data['state'];
		}
		// Record stats
		parent::process_request( $post, $post_data );
		die();
	}
	
	public function display_footer() {
		global $post;
?>
	<script type="text/javascript" charset="utf-8">
	function sharing_plusone( obj ) { 
		jQuery.ajax( {
			url: '<?php echo get_permalink( $post->ID ) . '?share=google-plus-1'; ?>',
			type: 'POST',
			data: obj
		} );
	}
	</script>
	<script type="text/javascript" src="http://apis.google.com/js/plusone.js"></script>
<?php
	}	

	public function get_total( $post = false ) {
		global $wpdb, $blog_id;
		
		$name = strtolower( $this->get_id() ); 
		
		if ( $post == false ) {
			// get total number of shares for service
			return $wpdb->get_var( $wpdb->prepare( "SELECT SUM( count ) FROM sharing_stats WHERE blog_id = %d AND share_service = %s", $blog_id, $name ) );
		}
		
		//get total shares for a post
		return $wpdb->get_var( $wpdb->prepare( "SELECT count FROM sharing_stats WHERE blog_id = %d AND post_id = %d AND share_service = %s", $blog_id, $post->ID, $name ) );
	}
}

class Share_Custom extends Sharing_Advanced_Source {
	private $name;
	private $icon;
	private $url;
	public $smart = true;
	var $shortname;
	
	public function get_class() {
		return 'custom';
	}

	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );
		
		$opts = $this->get_options();

		if ( isset( $settings['name'] ) ) {
			$this->name = $settings['name'];
			$this->shortname = preg_replace( '/[^a-z0-9]*/', '', $settings['name'] );
		}

		if ( isset( $settings['icon'] ) )
			$this->icon = $settings['icon'];

		if ( isset( $settings['url'] ) )
			$this->url = $settings['url'];
	}
	
	public function get_name() {
		return $this->name;
	}
	
	public function get_display( $post ) {
		$str = $this->get_link( get_permalink( $post->ID ), esc_html( $this->name ), __( 'Click to share', 'jetpack' ), 'share='.$this->id );
		return str_replace( '<span>', '<span style="background-image:url(' . esc_url( $this->icon ) . ');">', $str );
	}

	public function process_request( $post, array $post_data ) {
		$url = str_replace( '&amp;', '&', $this->url );
		$url = str_replace( '%post_url%', rawurlencode( $this->get_share_url( $post->ID ) ), $url );
		$url = str_replace( '%post_full_url%', rawurlencode( get_permalink( $post->ID ) ), $url );
		$url = str_replace( '%post_title%', rawurlencode( $post->post_title ), $url );

		if ( strpos( $url, '%post_tags%' ) !== false ) {
			$tags   = get_the_tags( $post->ID );
			$tagged = '';
			
			if ( $tags ) {
				foreach ( $tags AS $tag ) {
					$tagged[] = rawurlencode( $tag->name );
				}
			
				$tagged = implode( ',', $tagged );
			}

			$url = str_replace( '%post_tags%', $tagged, $url );
		}
		
		if ( strpos( $url, '%post_excerpt%' ) !== false ) {
			$url_excerpt = $post->post_excerpt;
			if ( empty( $url_excerpt ) )
				$url_excerpt = $post->post_content;
			
			$url_excerpt = strip_tags( strip_shortcodes( $url_excerpt ) );
			$url_excerpt = wp_html_excerpt( $url_excerpt, 100 );
			$url_excerpt = rtrim( preg_replace( '/[^ .]*$/', '', $url_excerpt ) );
			$url = str_replace( '%post_excerpt%', rawurlencode( $url_excerpt ), $url );
		}

		// Record stats
		parent::process_request( $post, $post_data );

		// Redirect
		wp_redirect( $url );
		die();
	}
	
	public function display_options() {
?>
<div class="input">
	<table class="form-table">
		<tbody>
			<tr>
				<th scope="row"><?php _e( 'Label', 'jetpack' ); ?></th>
				<td><input type="text" name="name" value="<?php echo esc_attr( $this->name ); ?>" /></td>
			</tr>

			<tr>
				<th scope="row"><?php _e( 'URL', 'jetpack' ); ?></th>
				<td><input type="text" name="url" value="<?php echo esc_attr( $this->url ); ?>" /></td>
			</tr>

			<tr>
				<th scope="row"><?php _e( 'Icon', 'jetpack' ); ?></th>
				<td><input type="text" name="icon" value="<?php echo esc_attr( $this->icon ); ?>" /></td>
			</tr>

			<tr>
				<th scope="row"></th>
				<td>
					<input class="button-secondary" type="submit" value="<?php _e( 'Save', 'jetpack' ); ?>" />
					<a href="#" class="remove"><small><?php _e( 'Remove Service', 'jetpack' ); ?></small></a>
				</td>
			</tr>
		</tbody>
	</table>
</div>
<?php
	}

	public function update_options( array $data ) {
		$name  = trim( wp_html_excerpt( wp_kses( stripslashes( $data['name'] ), array() ), 30 ) );
		$url   = trim( esc_url_raw( $data['url'] ) );
		$icon  = trim( esc_url_raw( $data['icon'] ) );
		
		if ( $name )
			$this->name = $name;

		if ( $url )
			$this->url  = $url;
			
		if ( $icon )
			$this->icon = $icon;
	}

	public function get_options() {
		return array(
			'name' => $this->name,
			'icon' => $this->icon,
			'url'  => $this->url,
		);
	}
	
	public function display_preview() {
		$opts = $this->get_options();
		
		$text = '&nbsp;';
		if ( !$this->smart )
			if ( $this->button_style != 'icon' )
				$text = $this->get_name();
				
		$klasses = array( 'share-'.$this->shortname );
		
		if ( $this->button_style == 'icon' || $this->button_style == 'icon-text' )
			$klasses[] = 'share-icon';
		
		if ( $this->button_style == 'icon' ) {
			$text = '';
			$klasses[] = 'no-text';
		}
			
		if ( $this->button_style == 'text' )
			$klasses[] = 'no-icon';

		$link = sprintf(
			'<a rel="nofollow" class="%s" href="javascript:void(0);return false;" title="%s"><span style="background-image:url(%s) !important;background-position:left center;background-repeat:no-repeat;">%s</span></a>',
			implode( ' ', $klasses ),
			$this->get_name(),
			esc_url( $opts['icon'] ),
			$text
		);
		?>
		<div class="option option-smart-off">
		<?php echo $link ; ?>
		</div><?php
	}
}


class Share_Tumblr extends Sharing_Source {
	var $shortname = 'tumblr';
	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );
		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Tumblr', 'jetpack' );
	}

	public function get_display( $post ) {
		if ( $this->smart )
			return '<a href="http://www.tumblr.com/share/link/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&name=' . rawurlencode( $post->post_title ) . '" title="Share on Tumblr" style="display:inline-block; text-indent:-9999px; overflow:hidden; width:62px; height:20px; background:url(\'http://platform.tumblr.com/v1/share_2.png\') top left no-repeat transparent;">Share on Tumblr</a>';
		else
			return $this->get_link( get_permalink( $post->ID ), _x( 'Tumblr', 'share to', 'jetpack' ), __( 'Click to share on Tumblr', 'jetpack' ), 'share=tumblr' );
	}
	
	public function process_request( $post, array $post_data ) {
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Tumblr's sharing endpoint (a la their bookmarklet)
		$url = 'http://www.tumblr.com/share?v=3&u=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&t=' . rawurlencode( $post->post_title ) . '&s=';
		wp_redirect( $url );
		die();
	}
	// http://www.tumblr.com/share?v=3&u=URL&t=TITLE&s=
	public function display_footer() {
		if ( $this->smart ) {
			?><script type="text/javascript" src="http://platform.tumblr.com/v1/share.js"></script><?php
		} else {
			$this->js_dialog( $this->shortname, array( 'width' => 450, 'height' => 450 ) );
		}
	}
}

class Share_Pinterest extends Sharing_Source {
	var $shortname = 'pinterest';

	public function __construct( $id, array $settings ) {
		parent::__construct( $id, $settings );

		if ( 'official' == $this->button_style )
			$this->smart = true;
		else
			$this->smart = false;
	}
	
	public function get_name() {
		return __( 'Pinterest', 'jetpack' );
	}

	public function get_post_image( $content ) {
		$image = '';

		if ( function_exists('has_post_thumbnail') && has_post_thumbnail() ) {
			$thumb_id = get_post_thumbnail_id();
			$thumb = wp_get_attachment_image_src( $thumb_id );
			$image = remove_query_arg( array('w', 'h'), $thumb[0] ); 
		} else if ( preg_match_all('/<img (.+?)>/', $content, $matches) ) {
			foreach ( $matches[1] as $attrs ) {
				$media = $img = array();
				foreach ( wp_kses_hair( $attrs, array( 'http', 'https' ) ) as $attr )
					$img[$attr['name']] = $attr['value'];
				if ( !isset( $img['src'] ) || 0 !== strpos( $img['src'], 'http' ) ) {
					continue;
				}
				else {
					$image = $img['src'];
					break;
				}
			}
		}

		return $image;
	}

	public function get_display( $post ) {
		if ( $this->smart )
			return '<div class="pinterest_button"><a href="' . esc_url( 'http://pinterest.com/pin/create/button/?url='. rawurlencode( $this->get_share_url( $post->ID ) ) . '&description=' . rawurlencode( $post->post_title ) . '&media=' . rawurlencode( esc_url_raw( $this->get_post_image( $post->post_content ) ) ) ) . '" class="pin-it-button" count-layout="horizontal"> '. __( 'Pin It', 'jetpack') .'</a></div>';
		else
			return $this->get_link( get_permalink( $post->ID ), _x( 'Pinterest', 'share to', 'jetpack' ), __( 'Click to share on Pinterest', 'jetpack' ), 'share=pinterest' );
	}
	
	public function process_request( $post, array $post_data ) {
		$pinterest_url = esc_url_raw( 'http://pinterest.com/pin/create/button/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&description=' . rawurlencode( $post->post_title ) . '&media=' . rawurlencode( esc_url_raw( $this->get_post_image( $post->post_content ) ) ) );
		
		// Record stats
		parent::process_request( $post, $post_data );
		
		// Redirect to Pinterest
		wp_redirect( $pinterest_url );
		die();
	}	

	public function display_footer() {
		if ( !$this->smart ) {
			$this->js_dialog( $this->shortname, array( 'width' => 650, 'height' => 280 ) );
		} else {
?>
	<script type="text/javascript">
	function pinterest_async_load() {
		var s = document.createElement("script");
		s.type = "text/javascript";
		s.async = true;
		s.src = window.location.protocol + "//assets.pinterest.com/js/pinit.js";
		var x = document.getElementsByTagName("script")[0];
		x.parentNode.insertBefore(s, x);
	}
	jQuery(document).on('ready post-load', function() {
        	pinterest_async_load();
	});
	</script>
<?php
		}
	}


}
