From d890265cb2965eb9d7548b335baeeabd57686211 Mon Sep 17 00:00:00 2001
From: Travis Weston <anubisthejackle@users.noreply.github.com>
Date: Fri, 28 Jul 2023 15:24:54 -0400
Subject: [PATCH 1/2] WIP: PEERS-606


From 0a0c68bc52889a12fa4d224b1ccf66383a53a11f Mon Sep 17 00:00:00 2001
From: Travis Weston <anubisthejackle@users.noreply.github.com>
Date: Fri, 28 Jul 2023 16:20:28 -0400
Subject: [PATCH 2/2] Make it so post meta can be attached to all post types

---
 config/post-meta.json   |  4 +---
 src/class-generator.php |  2 +-
 src/meta.php            | 32 ++++++++++++++++++++++++++------
 3 files changed, 28 insertions(+), 10 deletions(-)

diff --git a/config/post-meta.json b/config/post-meta.json
index 3028aaf..10a1f2e 100644
--- a/config/post-meta.json
+++ b/config/post-meta.json
@@ -2,8 +2,6 @@
   "wp_pdf_generator_show": {
     "default": true,
     "type": "boolean",
-    "post_types": [
-      "post"
-    ]
+    "post_types": "all"
   }
 }
diff --git a/src/class-generator.php b/src/class-generator.php
index 816ebd1..e9cbe35 100644
--- a/src/class-generator.php
+++ b/src/class-generator.php
@@ -48,7 +48,7 @@ public function add_download_button( $content ): string {
 	 */
 	public function generate_pdf(): void {
 		if (
-			! is_single() ||
+			! is_singular() ||
 			! get_the_ID() ||
 			! (bool) get_post_meta( get_the_ID(), 'wp_pdf_generator_show', true ) ||
 			! isset( $_GET['download_pdf'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
diff --git a/src/meta.php b/src/meta.php
index 9ba3ab7..edb1f75 100644
--- a/src/meta.php
+++ b/src/meta.php
@@ -19,14 +19,14 @@
  * @see \register_term_meta
  *
  * @param string               $object_type  The type of meta to register, which must be one of 'post' or 'term'.
- * @param string[]             $object_slugs The post type or taxonomy slugs to register with.
+ * @param string|string[]      $object_slugs The post type or taxonomy slugs to register with.
  * @param string               $meta_key     The meta key to register.
  * @param array<string, mixed> $args         Optional. Additional arguments for register_post_meta or register_term_meta. Defaults to an empty array.
  * @return bool True if the meta key was successfully registered in the global array, false if not.
  */
 function register_meta_helper(
 	string $object_type,
-	array $object_slugs,
+	string|array $object_slugs,
 	string $meta_key,
 	array $args = []
 ) : bool {
@@ -46,7 +46,7 @@ function register_meta_helper(
 	 *
 	 * @link https://developer.wordpress.org/reference/functions/register_meta/
 	 *
-	 * @param array  $args {
+	 * @param array        $args {
 	 *     Array of args to be passed to register_meta().
 	 *
 	 *     @type string     $object_subtype    A subtype; e.g. if the object type is "post", the post type. If left empty,
@@ -67,9 +67,9 @@ function register_meta_helper(
 	 *                                         complex meta values this argument may optionally be an array with 'schema'
 	 *                                         or 'prepare_callback' keys instead of a boolean.
 	 * }
-	 * @param string $object_type  The type of meta to register, which must be one of 'post' or 'term'.
-	 * @param array  $object_slugs The post type or taxonomy slugs to register with.
-	 * @param string $meta_key     The meta key to register.
+	 * @param string       $object_type  The type of meta to register, which must be one of 'post' or 'term'.
+	 * @param string|array $object_slugs The post type or taxonomy slugs to register with.
+	 * @param string       $meta_key     The meta key to register.
 	 */
 	$args = apply_filters(
 		'wp_pdf_generator_register_meta_helper_args',
@@ -86,6 +86,26 @@ function register_meta_helper(
 		$meta_key
 	);
 
+	// Allow setting meta for all of an object type.
+	if (
+		(
+			is_array( $object_slugs ) &&
+			count( $object_slugs ) === 1 &&
+			'all' === $object_slugs[0]
+		) ||
+		(
+			is_string( $object_slugs ) &&
+			'all' === $object_slugs
+		)
+	) {
+		return register_meta( $object_type, $meta_key, $args );
+	}
+
+	// Fix potential errors since we're allowing `$object_slugs` to be a string or array.
+	if ( is_string( $object_slugs ) ) {
+		$object_slugs = [ $object_slugs ];
+	}
+
 	// Fork for object type.
 	switch ( $object_type ) {
 		case 'post':