fb-social-publisher-mentioning.php

<?php
add_action( 'admin_init','fb_friend_page_autocomplete' );
add_filter( 'the_content', 'fb_social_publisher_mentioning_output', 30 );
add_action( 'wp_ajax_my_action', 'fb_friend_page_autocomplete' );

function fb_friend_page_autocomplete() {
	global $facebook;

	$output = array();
	$nonce = '';

	if (isset($_GET) && isset($_GET['autocompleteNonce']))
		$nonce = $_GET['autocompleteNonce'];

	// check to see if the submitted nonce matches with the
	// generated nonce we created earlier
	if ( wp_verify_nonce( $nonce, 'fb_autocomplete_nonce' ) ) {
		if ( ! empty($_GET['fb-friends']) ) {
			if ( ! isset( $facebook ) )
				return;

			if ( false === ( $friends = get_transient( 'fb_friends_' . $facebook->getUser() ) ) ) {
				try {
					$friends = $facebook->api('/me/friends', 'GET', array('ref' => 'fbwpp'));
				}
				catch (WP_FacebookApiException $e) {}

				set_transient( 'fb_friends_' . $facebook->getUser(), $friends, 60*15 );
			}

			foreach($friends['data'] as $friend) {
				$friends_clean[$friend['name']] = $friend['id'];
			}

			if (isset($_GET['q']) && isset($friends_clean)) {
				$q = strtolower($_GET['q']);

				if ($q) {
					foreach ($friends_clean as $key => $value) {
						if ( strpos( strtolower($key), $q ) !== false )
							$results[] = array($key, $value);
					}
				}
			}

			if ( ! empty($results) ) {
				$count = 0;

				foreach ($results as $result) {
					$output[$count]['id'] = '[' . esc_attr($result[1]) . '|' . esc_attr($result[0]) . ']';
					$output[$count]['uid'] = $result[1];
					$output[$count]['name'] = $result[0];
					$count++;
				}
			}

			if ( ! headers_sent() )
				header( 'Content-Type: application/json; charset=utf-8', true );
			echo json_encode($output);
			exit;
		}

		if ( ! empty( $_GET['fb-pages'] ) ) {
			if ( ! isset( $facebook ) )
				return;

			if ( false === ( $pages = get_transient( 'fb_pages_' . $_GET['q']) ) ) {
				try {
					$pages = $facebook->api( '/search', 'GET', array( 'type' => 'page', 'fields' => 'picture,name,id,likes', 'ref' => 'fbwpp', 'q' => $_GET['q'] ) );
				}
				catch (WP_FacebookApiException $e) {}
				set_transient( 'fb_pages_' . $_GET['q'], $pages, 60*60 );
			}

			if ( isset($pages['data']) ) {
				$pages_clean = array();
				foreach($pages['data'] as $page) {
					if (isset($page['name']) && isset($page['picture']) && isset($page['id']) && isset($page['likes']))
						$pages_clean[$page['name']] = array($page['picture'], $page['name'], $page['id'], $page['likes']);
				}
			} else {
				echo 'Error returning results.';
				exit;
			}

			$results = array();
			if ( isset($_GET['q']) ) {
				$q = strtolower($_GET['q']);

				if ( $q && isset($pages_clean) ) {
					foreach ($pages_clean as $key => $value) {
						if (strpos(strtolower($key), $q) !== false)
							$results[] = array($key, $value);
					}
				}
			}

			if ( ! empty($results) ) {
				$count = 0;

				foreach ($results as $result) {
					$item = array();
					$item['id'] = '[' . esc_attr($result[1][2]) . '|' . esc_attr($result[1][1]) . ']';

					$image_uri = esc_url_raw( $result[1][0], array('http','https') );
					if ( $image_uri )
						$item['image'] = $image_uri;
					unset( $image_uri );

					$item['name'] = $result[1][1];

					$likes = absint( $result[1][3] );
					if ( $likes )
						$item['likes'] = $likes;
					unset( $likes );

					$output[$count] = $item;
					unset($item);
					$count++;
				}
			}

			if ( ! headers_sent() )
				header( 'Content-Type: application/json; charset=utf-8', true );
			echo json_encode($output);
			exit;
		}
	}
}

add_action( 'add_meta_boxes', 'fb_add_page_mention_box' );
add_action( 'save_post', 'fb_add_page_mention_box_save' );

function fb_add_page_mention_box() {
	global $post;
	global $facebook;
	$options = get_option('fb_options');

	if ($post->post_status == 'publish')
		return;

	if ( isset( $options['social_publisher']['enabled'] ) ) {
		$post_types = get_post_types(array('public' => true));
		unset($post_types['attachment']);
		$post_types = array_values($post_types);

		foreach ( $post_types as $post_type ) {
			add_meta_box(
				'fb_page_mention_box_id',
				__( 'Mention Facebook Pages', 'facebook' ),
				'fb_add_page_mention_box_content',
				$post_type,
				'side'
			);
		}
	}
}

function fb_add_page_mention_box_content( $post ) {
	global $facebook;

	wp_enqueue_script('suggest');

	// Use nonce for verification
	wp_nonce_field( plugin_basename( __FILE__ ), 'fb_page_mention_box_noncename' );

	$fb_user = fb_get_current_user();

	if (isset ( $fb_user ) ) {
		$perms = $facebook->api('/me/permissions', 'GET', array('ref' => 'fbwpp'));
	}

	if ( isset ( $fb_user ) && isset($perms['data'][0]['manage_pages']) && isset($perms['data'][0]['publish_actions']) && isset($perms['data'][0]['publish_stream'])) {
		// The actual fields for data entry
		echo '<label for="fb_page_mention_box_autocomplete">';
		_e("Page's Name", 'facebook' );
		echo '</label> ';
		echo '<input type="text" class="widefat" id="suggest-pages" autocomplete="off" name="fb_page_mention_box_autocomplete" value="" size="44" placeholder="' . esc_attr__('Type to find a page.', 'facebook') . '" />';
		echo '<label for="fb_page_mention_box_message">';
		_e('Message', 'facebook' );
		echo '</label> ';
		echo '<input type="text" class="widefat" id="pages-mention-message" name="fb_page_mention_box_message" value="" size="44" placeholder="'.esc_attr__('Write something...').'" />';
		echo '<p class="howto">';
		if ( $post->post_type == 'page' ) {
			echo esc_html( __( 'This will add the page and message to the Timeline of each Facebook Page mentioned. They will also appear in the contents of the page.', 'facebook' ) );
		} else {
			echo esc_html( __( 'This will add the post and message to the Timeline of each Facebook Page mentioned. They will also appear in the contents of the post.', 'facebook') );
		}
		echo '</p>';
	} else {
		echo '<p>' . esc_html( __( 'Facebook social publishing is enabled.', 'facebook' ) ) . '</p>';
		echo '<p>' . esc_html( sprintf( __( '%s to get full functionality, including adding new Posts to your Timeline and mentioning friends Facebook Pages.', 'facebook' ), '<strong><a href="#" onclick="authFacebook(); return false;">' . esc_html( __( 'Link your Facebook account to your WordPress account', 'facebook' ) ) . '</a></strong>' ) ) . '</p>';
	}
}

function fb_add_page_mention_box_save( $post_id ) {
	// verify if this is an auto save routine.
	// If it is our form has not been submitted, so we dont want to do anything
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
			return;

	$fb_user = fb_get_current_user();

	if (!$fb_user)
		return;

	// verify this came from the our screen and with proper authorization,
	// because save_post can be triggered at other times

	if ( empty($_POST['fb_page_mention_box_noncename']) || !wp_verify_nonce( $_POST['fb_page_mention_box_noncename'], plugin_basename( __FILE__ ) ) )
			return;


	// Check permissions
	if ( 'page' == $_POST['post_type'] ) {
		if ( !current_user_can( 'edit_page', $post_id ) )
			return;
	}
	else {
		if ( !current_user_can( 'edit_post', $post_id ) )
			return;
	}

	// OK, we're authenticated: we need to find and save the data
	if ( isset ( $_POST ) && isset( $_POST['fb_page_mention_box_autocomplete'] ) ) {
		$autocomplete_data = $_POST['fb_page_mention_box_autocomplete'];

		preg_match_all(
			'/\[(.*?)\|(.*?)\]/su',
			$autocomplete_data,
			$page_details,
			PREG_SET_ORDER // formats data into an array of posts
		);

		// probably using add_post_meta(), update_post_meta(), or
		// a custom table (see Further Reading section below)

		$pages_details_meta = array();

		foreach($page_details as $page_detail) {
			$pages_details_meta[] = array('id' => sanitize_text_field($page_detail[1]), 'name' => sanitize_text_field($page_detail[2]));
		}

		update_post_meta($post_id, 'fb_mentioned_pages', $pages_details_meta );

		update_post_meta($post_id, 'fb_mentioned_pages_message', sanitize_text_field($_POST['fb_page_mention_box_message']) );
	}
}

add_action( 'add_meta_boxes', 'fb_add_friend_mention_box' );
add_action( 'save_post', 'fb_add_friend_mention_box_save' );

function fb_add_friend_mention_box() {
	global $post;
	global $facebook;
	$options = get_option('fb_options');

	if ($post->post_status == 'publish')
		return;

	if ( isset( $options['social_publisher']['enabled'] ) ) {
		$post_types = get_post_types(array('public' => true));
		unset($post_types['attachment']);
		$post_types = array_values($post_types);

		foreach ( $post_types as $post_type ) {
			add_meta_box(
				'fb_friend_mention_box_id',
				__( 'Mention Facebook Friends', 'facebook' ),
				'fb_add_friend_mention_box_content',
				$post_type,
				'side'
			);
		}
	}
}

function fb_add_friend_mention_box_content( $post ) {
	global $facebook;

	wp_enqueue_script('suggest');

	// Use nonce for verification
	wp_nonce_field( plugin_basename( __FILE__ ), 'fb_friend_mention_box_noncename' );

	$fb_user = fb_get_current_user();

	if ( isset( $fb_user ) )
		$perms = $facebook->api('/me/permissions', 'GET', array('ref' => 'fbwpp'));

	if ( isset ( $fb_user ) && isset($perms['data'][0]['manage_pages']) && isset($perms['data'][0]['publish_actions']) && isset($perms['data'][0]['publish_stream'])) {
		// The actual fields for data entry
		echo '<label for="suggest-friends">';
		echo esc_html__( "Friend's Name", 'facebook' );
		echo '</label> ';
		echo '<input type="text" class="widefat" id="suggest-friends" autocomplete="off" name="fb_friend_mention_box_autocomplete" value="" size="44" placeholder="' . esc_attr__( 'Type to find a friend.', 'facebook' ) . '" />';
		echo '<label for="friends-mention-message">';
		echo esc_html__('Message', 'facebook' );
		echo '</label> ';
		echo '<input type="text" class="widefat" id="friends-mention-message" name="fb_friend_mention_box_message" value="" size="44" placeholder="' . esc_attr__( 'Write something...', 'facebook' ) . '" />';

		echo '<p class="howto">';
		if ( $post->post_type == 'page' ) {
			echo esc_html__( 'This will add the page and message to the Timeline of each friend mentioned. They will also appear in the contents of the page.', 'facebook' );
		} else {
			echo esc_html__( 'This will add the post and message to the Timeline of each friend mentioned. They will also appear in the contents of the post.', 'facebook' );
		}
		echo '</p>';
	} else {
		echo '<p>' . esc_html( __('Facebook social publishing is enabled.', 'facebook') ) .'</p>';
		echo '<p>' . esc_html( sprintf( __( '%s to get full functionality, including adding new Posts to your Timeline and mentioning friends Facebook Pages.', 'facebook'), '<a href="#" onclick="authFacebook(); return false;"><strong>' . esc_html( __( 'Link your Facebook account to your WordPress account', 'facebook' ) ) . ' </strong></a>' ) ) .'</p>';
	}
}

function fb_add_friend_mention_box_save( $post_id ) {
	// verify if this is an auto save routine.
	// If it is our form has not been submitted, so we dont want to do anything
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
			return;

	$fb_user = fb_get_current_user();

	if (!$fb_user)
		return;

	// verify this came from the our screen and with proper authorization,
	// because save_post can be triggered at other times

	if ( empty($_POST['fb_friend_mention_box_noncename']) || !wp_verify_nonce( $_POST['fb_friend_mention_box_noncename'], plugin_basename( __FILE__ ) ) )
			return;


	// Check permissions
	if ( 'page' == $_POST['post_type'] ) {
		if ( !current_user_can( 'edit_page', $post_id ) )
			return;
	}
	else {
		if ( !current_user_can( 'edit_post', $post_id ) )
			return;
	}

	// OK, we're authenticated: we need to find and save the data
	if ( isset ($_POST) && isset( $_POST['fb_page_mention_box_autocomplete'] ) ) {
		$autocomplete_data = $_POST['fb_friend_mention_box_autocomplete'];

		preg_match_all(
			'/\[(.*?)\|(.*?)\]/su',
			$autocomplete_data,
			$friend_details,
			PREG_SET_ORDER // formats data into an array of posts
		);

		// probably using add_post_meta(), update_post_meta(), or
		// a custom table (see Further Reading section below)

		$friends_details_meta = array();

		foreach($friend_details as $friend_detail) {
			$friends_details_meta[] = array('id' => sanitize_text_field($friend_detail[1]), 'name' => sanitize_text_field($friend_detail[2]));
		}

		update_post_meta($post_id, 'fb_mentioned_friends', $friends_details_meta);

		update_post_meta($post_id, 'fb_mentioned_friends_message', sanitize_text_field($_POST['fb_friend_mention_box_message']));
	}
}


function fb_social_publisher_mentioning_output($content) {
	global $post;

	$options = get_option('fb_options');

	if( $post ) {
		$fb_mentioned_pages	 = get_post_meta($post->ID, 'fb_mentioned_pages', true);
		$fb_mentioned_friends = get_post_meta($post->ID, 'fb_mentioned_friends', true);

		$mentions_entities = '';

		if ( ! empty($fb_mentioned_friends) ){
			foreach( $fb_mentioned_friends as $fb_mentioned_friend ) {
				$mentions_entities .= '<a target="_blank" href="http://www.facebook.com/' . esc_attr($fb_mentioned_friend['id']) . '" title="'.sprintf(esc_attr__('Click to visit %s\'s profile on Facebook.','facebook'), esc_attr($fb_mentioned_friend['name'])) .'"><img src="http://graph.facebook.com/' . esc_attr($fb_mentioned_friend['id']) . '/picture?width=16&height=16" width="16" height="16"> ' . esc_html($fb_mentioned_friend['name']) . '</a> ';
			}
		}

		if ( ! empty($fb_mentioned_pages) ) {
			foreach( $fb_mentioned_pages as $fb_mentioned_page ) {
				$mentions_entities .= '<a target="_blank" href="http://www.facebook.com/' . esc_attr($fb_mentioned_page['id']) . '" title="'.sprintf(esc_attr__('Click to visit %s\'s profile on Facebook.','facebook'), esc_attr($fb_mentioned_page['name'])).'"><img src="http://graph.facebook.com/' . esc_attr($fb_mentioned_page['id']) . '/picture?width=16&height=16" width="16" height="16"> ' . esc_html($fb_mentioned_page['name']) . '</a> ';
			}
		}

		if ($mentions_entities) {
			$mentions = '<div class="fb-mentions entry-meta">' . $mentions_entities . 'mentioned.</div>';

			$new_content = '';

			if ( isset($options['social_publisher']) ) {
				switch ($options['social_publisher']['mentions_position']) {
					case 'top':
						$new_content = $mentions . $content;
						break;
					case 'bottom':
						$new_content = $content . $mentions;
						break;
					case 'both':
						$new_content = $mentions . $content;
						$new_content .= $mentions;
						break;
					default:
						$new_content = $content;
				}

				if ( empty( $options['social_publisher']['mentions_show_on_homepage'] ) && is_singular() )
					$content = $new_content;
				else if ( isset($options['social_publisher']['mentions_show_on_homepage']) )
					$content = $new_content;
			}
		}
	}


	return $content;
}