Add attendee survey to wordcamps.

public_html/wp-content/mu-plugins/wcorg-network-plugin-control.php

@@ -93,6 +93,7 @@ function _get_network_plugin_state_list( $state ) {
 		$network_plugin_state['activated'][] = 'tagregator/bootstrap.php';
 	} elseif ( EVENTS_NETWORK_ID === $network_id ) {
 		$network_plugin_state['deactivated'][] = 'tagregator/bootstrap.php';
+		$network_plugin_state['activated'][]   = 'camptix-attendee-survey/camptix-attendee-survey.php';
 	}
 
 	return $network_plugin_state[ $state ];

public_html/wp-content/plugins/camptix-attendee-survey/camptix-attendee-survey.php

@@ -0,0 +1,159 @@
+<?php
+/**
+ * Plugin Name:     CampTix Attendee Survey
+ * Plugin URI:      https://wordcamp.org
+ * Description:     Send survey to WordCamp attendees.
+ * Author:          WordCamp.org
+ * Author URI:      https://wordcamp.org
+ * Version:         1
+ *
+ * @package         CampTix\AttendeeSurvey
+ */
+
+namespace CampTix\AttendeeSurvey;
+
+use function CampTix\AttendeeSurvey\Email\{add_email, delete_email};
+use function CampTix\AttendeeSurvey\Page\{add_page, delete_page};
+
+defined( 'WPINC' ) || die();
+
+/**
+ * Local dependencies.
+ */
+require_once get_includes_path() . 'email.php';
+require_once get_includes_path() . 'page.php';
+
+/**
+ * Plugin activation and deactivation hooks.
+ */
+register_deactivation_hook( __FILE__, __NAMESPACE__ . '\deactivate' );
+
+/**
+ * Actions & hooks
+ */
+add_action( 'plugins_loaded', __NAMESPACE__ . '\load' );
+
+/**
+ * Get the ID of the survey feature.
+ */
+function get_feature_id() {
+	return 'attendee_survey';
+}
+
+/**
+ * Check dependencies for loading the plugin.
+ *
+ * @return bool
+ */
+function can_load() {
+	$skip_feature = wcorg_skip_feature( get_feature_id() );
+
+	return ! $skip_feature;
+}
+
+/**
+ * Include the rest of the plugin.
+ *
+ * @return void
+ */
+function load() {
+	if ( ! can_load() ) {
+		return;
+	}
+
+	// We only want to admin panel on central, nothing else.
+	if ( WORDCAMP_ROOT_BLOG_ID === get_current_blog_id() ) {
+		require_once get_includes_path() . 'admin-page.php';
+	}
+
+	if ( is_wordcamp_type( 'next-gen' ) ) {
+		require_once get_includes_path() . 'cron.php';
+		add_action( 'init', __NAMESPACE__ . '\activate_on_current_site' );
+	}
+}
+
+/**
+ * The activation routine for a single site.
+ *
+ * @return void
+ */
+function activate_on_current_site() {
+	add_page();
+	add_email();
+
+	// Flushing the rewrite rules is buggy in the context of `switch_to_blog`.
+	// The rules will automatically get recreated on the next request to the site.
+	delete_option( 'rewrite_rules' );
+}
+
+/**
+ * Remove the survey page.
+ *
+ * @param bool $is_network True if deactivating network-wide.
+ *
+ * @return void
+ */
+function deactivate( $is_network = false ) {
+	if ( $is_network ) {
+		deactivate_on_network();
+	} else {
+		deactivate_on_current_site();
+	}
+}
+
+/**
+ * Run the deactivation routine on all valid sites in the network.
+ *
+ * @return void
+ */
+function deactivate_on_network() {
+	$valid_sites = get_site_ids_without_skip_flag();
+
+	foreach ( $valid_sites as $blog_id ) {
+		switch_to_blog( $blog_id );
+		deactivate_on_current_site();
+		restore_current_blog();
+	}
+}
+
+/**
+ * The deactivation routine for a single site.
+ *
+ * @return void
+ */
+function deactivate_on_current_site() {
+	delete_page();
+	delete_email();
+}
+
+/**
+ * Get the IDs of sites that do not have the FEATURE_ID skip feature flag.
+ *
+ * @return array
+ */
+function get_site_ids_without_skip_flag() {
+	global $wpdb;
+
+	$blog_ids = $wpdb->get_col(
+		$wpdb->prepare("
+			SELECT b.blog_id
+			FROM $wpdb->blogs AS b
+			LEFT OUTER JOIN $wpdb->blogmeta AS m
+			ON b.blog_id = m.blog_id AND m.meta_key = 'wordcamp_skip_feature' AND m.meta_value = %s
+			WHERE m.meta_value IS NULL
+			",
+			get_feature_id()
+		)
+	);
+
+	return array_map( 'absint', $blog_ids );
+}
+
+/**
+ * Shortcut to the includes directory.
+ *
+ * @return string
+ */
+function get_includes_path() {
+	return plugin_dir_path( __FILE__ ) . 'includes/';
+}

public_html/wp-content/plugins/camptix-attendee-survey/includes/admin-page.php

@@ -0,0 +1,145 @@
+<?php
+/**
+ * Adds a page to the central admin.
+ */
+
+namespace CampTix\AttendeeSurvey\AdminPage;
+
+defined( 'WPINC' ) || die();
+
+use CampTix_Plugin;
+
+use function CampTix\AttendeeSurvey\{get_feature_id};
+use function CampTix\AttendeeSurvey\Email\{get_email_id};
+use function CampTix\AttendeeSurvey\Page\{get_page_id};
+use function CampTix\AttendeeSurvey\Cron\{get_wordcamp_attendees_id};
+
+add_action( 'init', __NAMESPACE__ . '\init' );
+
+/**
+ * Registered the appropriate filters and actions.
+ */
+function init() {
+	add_action( 'admin_menu', __NAMESPACE__ . '\admin_menu' );
+}
+
+/**
+ * Add a menu item.
+ */
+function admin_menu() {
+	add_menu_page(
+		__( 'WordCamp Attendee Survey', 'wordcamporg' ),
+		__( 'Attendee Survey', 'wordcamporg' ),
+		'manage_options',
+		get_feature_id(),
+		__NAMESPACE__ . '\render_menu_page',
+		'dashicons-feedback',
+		58
+	);
+}
+
+/**
+ * Get stats for each feedback for all sites.
+ *
+ * @return array[] An array of custom elements.
+ *                Each element has the following structure:
+ *                [
+ *                  'title' => string,
+ *                  'sent' => string,
+ *                  'responses' => string,
+ *                  'rate' => string,
+ *                ]
+ */
+function get_feedback_details() {
+	/* @var CampTix_Plugin $camptix */
+	global $camptix;
+
+	$wordcamps = get_posts( array(
+		'post_type' => WCPT_POST_TYPE_ID,
+		'post_status' => 'wcpt-closed',
+		'posts_per_page' => -1,
+	) );
+
+	$feedback_details = array();
+
+	foreach ( $wordcamps as $camp ) {
+		$site_id = get_post_meta( $camp->ID, '_site_id', true );
+
+		switch_to_blog( $site_id );
+
+		$blog_details = get_blog_details( $site_id );
+
+		// TODO: This should be tested elsewhere.
+		if ( 'events.wordpress.test' !== $blog_details->domain ) {
+			continue;
+		}
+
+		$query = new \WP_Query( array(
+			'post_type'      => 'feedback',
+			'post_parent'    => get_page_id(),
+			'posts_per_page' => -1,
+		) );
+
+		$sent      = (int) $camptix->get_sent_email_count( get_email_id() );
+		$responses = (int) $query->found_posts;
+
+		$feedback_details[] = array(
+			'title' => $blog_details->blogname,
+			'admin_url' => admin_url(),
+			'email_url' => get_edit_post_link( get_email_id() ),
+			'responses_url' => admin_url( sprintf( 'edit.php?post_type=feedback&jetpack_form_parent_id=%s', get_page_id() ) ),
+			'sent' => $sent,
+			'responses' => $responses,
+			'rate' => 0 !== $sent ? ( $responses / $sent ) * 100 . '%' : '',
+		);
+
+		// Restore the original site context.
+		restore_current_blog();
+	}
+
+	// Reset the global post object.
+	wp_reset_postdata();
+
+	return $feedback_details;
+}
+
+/**
+ * Render the menu page.
+ */
+function render_menu_page() {
+	?>
+	<div class="wrap">
+		<h1><?php echo esc_html__( 'Attendee Survey', 'wordcamporg' ); ?></h1>
+
+		<table class="wp-list-table widefat fixed striped table-view-list">
+			<thead>
+				<tr>
+					<td><?php esc_html_e( 'Event', 'wordcamporg' ); ?></td>
+					<td><?php esc_html_e( 'Total Sent', 'wordcamporg' ); ?></td>
+					<td><?php esc_html_e( 'Total Responses', 'wordcamporg' ); ?></td>
+					<td><?php esc_html_e( 'Response rate', 'wordcamporg' ); ?></td>
+				</tr>
+			</thead>
+			<tbody>
+			<?php
+			$feedback_details = get_feedback_details();
+
+			foreach ( $feedback_details as $feedback_detail ) {
+				echo '<tr>';
+				echo '<td><a href="'. esc_url( $feedback_detail['admin_url'] ) . '">' . esc_html( $feedback_detail['title'] ) . '</a></td>';
+				echo '<td><a href="'. esc_url( $feedback_detail['email_url'] ) . '">' . esc_html( $feedback_detail['sent'] ) . '</a></td>';
+				echo '<td><a href="'. esc_url( $feedback_detail['responses_url'] ) . '">' . esc_html( $feedback_detail['responses'] ) . '</a></td>';
+				echo '<td>' . esc_html( $feedback_detail['rate'] ) . '</td>';
+				echo '</tr>';
+			}
+
+			if ( empty( $feedback_details ) ) {
+				echo '<tr><td colspan="4">' . esc_html__( 'Nothing to report', 'wordcamporg' ) . '</td></tr>';
+			}
+
+			?>
+			</tbody>
+		</table>
+	</div>
+	<?php
+}