Adding adding support for custom post-types

includes/add-post-types.php

@@ -0,0 +1,153 @@
+<?php
+
+/**
+ * Add custom post-type support to Slack
+ * 
+ * @copyright Copyright (c), Forsite Media
+ * @author Forsite Media / Ryan Hellyer <ryan@forsite.nu>
+ * @since 1.0
+ */
+class WP_Slack_Add_Post_Types {
+
+	/**
+	 * Class constructor
+	 */
+	public function __construct() {
+
+		add_action( 'admin_init',     array( $this, 'register_settings' ) );
+		add_action( 'admin_menu',     array( $this, 'add_submenu_page' ) );
+		add_action( 'plugins_loaded', array( $this, 'set_post_types' ) );
+	}
+
+	/*
+	 * Custom Post Type support for WP-Slack
+	 */
+	public function set_post_types() {
+		add_filter(
+			'slack_event_transition_post_status_post_types',
+			function( $post_types ) {
+				$set_post_types = get_option( 'slack-post-types' );
+				foreach( $set_post_types as $post_type => $on ) {
+					$post_types[] = $post_type;
+				}
+
+				return $post_types;
+			}
+		);
+	}
+
+	/**
+	 * Init plugin options to white list our options
+	 */
+	public function register_settings(){
+
+		// Register our option
+		register_setting( 'slack-post-types', 'slack-post-types', array( $this, 'sanitize' ) );
+
+		// Add post post-type as default
+		add_option( 'slack-post-types', array( 'post' => 1 ) );
+	}
+
+	/**
+	 * Add the menu page
+	 */
+	public function add_submenu_page() {
+		add_submenu_page(
+			'edit.php?post_type=slack_integration',
+			__( 'Post types', 'slack-post-types' ),
+			__( 'Post types', 'slack-post-types' ),
+			'manage_options',
+			'slack-post-types',
+			array( $this, 'display_admin_page' )
+		);
+	}
+
+	/**
+	 * Output the admin page
+	 */
+	public function display_admin_page() {
+		?>
+		<div class="wrap">
+			<?php screen_icon(); ?>
+
+			<h2><?php _e( 'Slack post-types', 'slack-post-types' ); ?></h2>
+			<p><?php _e( 'Set which post-types are operational in Slack below.', 'slack-post-types' ); ?></p>
+
+			<form method="post" action="options.php">
+				<?php settings_fields( 'slack-post-types' ); ?>
+
+				<table class="form-table"><?php
+				foreach ( $this->get_post_types()  as $post_type ) {
+
+					// Grab existing setting
+					$options = get_option( 'slack-post-types' );
+					if ( isset( $options[$post_type] ) ) {
+						$option = $options[$post_type];
+					} else {
+						$option = '';
+					}
+					?>
+
+					<tr valign="top">
+						<th scope="row"><?php printf( __( 'Include the "%s" post-type?', 'slack-post-types' ), $post_type ); ?></th>
+						<td>
+							<input type="checkbox" value="1" <?php checked( $option, 1 ); ?> id="<?php echo esc_attr( 'slack-post-types-' . $post_type ); ?>" name="<?php echo esc_attr( 'slack-post-types[' . $post_type . ']' ); ?>">
+							<label class="hidden description" for="<?php echo esc_attr( 'slack-post-types-' . $post_type ); ?>"><?php _e( 'Include post-type', 'slack-post-types' ); ?></label>
+						</td>
+					</tr><?php
+
+				}
+				?>
+
+				</table>
+
+				<p class="submit">
+					<input type="submit" class="button-primary" value="<?php _e( 'Save Settings', 'slack-post-types' ); ?>" />
+				</p>
+			</form>
+		</div><?php
+	}
+
+	/**
+	 * Sanitize and validate protection level
+	 *
+	 * @param    array    $input   The array of allowed post-types
+	 * @return   array    The sanitized array of allowed post-types
+	 */
+	public function sanitize( $input ) {
+		$post_types = $this->get_post_types(); 
+		$output = array();
+
+		// Iterate through possible post-types
+		foreach ( $post_types  as $post_type ) {
+
+			// Only set if post-type exists
+			if ( isset( $input[$post_type] ) ) {
+				$output[$post_type] = 1;
+			}
+
+		}
+
+		return $output;
+	}
+
+	/**
+	 * Get existing available public WordPress post-types
+	 *
+	 * @access   private
+	 * @return   array  The available public post-types
+	 */
+	private function get_post_types() {
+
+		$output = 'names'; // names or objects, note names is the default
+		$operator = 'and'; // 'and' or 'or'
+
+		// Collate builtin and custom post-types
+		$builtin_post_types = get_post_types( array( 'public'   => true, '_builtin' => true ), $output, $operator );
+		$custom_post_types = get_post_types( array( 'public'   => true, '_builtin' => false ), $output, $operator );
+		$post_types = array_merge( $builtin_post_types, $custom_post_types );
+
+		return $post_types;
+	}
+
+}

includes/plugin.php

@@ -26,6 +26,7 @@ public function run( $path ) {
 		$this->includes_path = $this->plugin_path . trailingslashit( 'includes' );
 
 		// Instances.
+		$this->add_post_types  = new WP_Slack_Add_Post_Types();
 		$this->post_type       = new WP_Slack_Post_Type( $this );
 		$this->notifier        = new WP_Slack_Notifier( $this );
 		$this->post_meta_box   = new WP_Slack_Post_Meta_Box( $this );