From c1c2725b049c95760b87ea486c1521517ff866f6 Mon Sep 17 00:00:00 2001
From: Jeremy Dormitzer <jeremy.dormitzer@gmail.com>
Date: Tue, 28 Aug 2018 19:26:18 -0400
Subject: [PATCH] Implement object GET url and hydrate object ids

---
 inc/activities/create.php | 22 +++-------------------
 inc/api.php               | 10 ++++++++++
 inc/init.php              |  4 ++--
 inc/objects.php           | 35 +++++++++++++++++++++++++++++++++++
 4 files changed, 50 insertions(+), 21 deletions(-)
 create mode 100644 inc/objects.php

diff --git a/inc/activities/create.php b/inc/activities/create.php
index 020dec3..d5920ae 100644
--- a/inc/activities/create.php
+++ b/inc/activities/create.php
@@ -1,6 +1,8 @@
 <?php
 namespace activities\create;
 
+require_once plugin_dir_path( __FILE__ ) . '/../objects.php';
+
 /*
 Create a new post or comment (depending on $activity["object"]["type"]),
 copying $activity["actor"] to the object's "attributedTo" and
@@ -31,7 +33,7 @@ function handle( $actor, $activity ) {
     $object["attributedTo"] = $actor_id;
     reconcile_receivers( $object, $activity );
     scrub_object( $object );
-    $object = persist_object( $object );
+    $object = \objects\persist_object( $object );
     $activity["object"] = $object;
     return $activity;
 }
@@ -67,22 +69,4 @@ function scrub_object( &$object ) {
     unset( $object["bcc"] );
     unset( $object["bto"] );
 }
-
-function persist_object( &$object ) {
-    global $wpdb;
-    $wpdb->insert( 'activitypub_objects', array( "object" => wp_json_encode( $object ) ) );
-    // TODO hydrate $object["id"] to URL of object using $wpdb->insert_id
-}
-
-function create_object_table() {
-    global $wpdb;
-    $wpdb->query(
-        "
-        CREATE TABLE IF NOT EXISTS activitypub_objects (
-            id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
-            object TEXT NOT NULL
-        );
-        "
-    );
-}
 ?>
diff --git a/inc/api.php b/inc/api.php
index 0fcd01d..3cc7405 100644
--- a/inc/api.php
+++ b/inc/api.php
@@ -3,6 +3,7 @@ namespace api;
 
 require_once plugin_dir_path( __FILE__ ) . '/actors.php';
 require_once plugin_dir_path( __FILE__ ) . '/outbox.php';
+require_once plugin_dir_path( __FILE__ ) . '/objects.php';
 
 function get_user_actor( $request ) {
     $handle = $request['handle'];
@@ -16,6 +17,11 @@ function post_to_outbox( $request ) {
     return \outbox\persist_activity( $handle, $activity );
 }
 
+function get_object( $request ) {
+    $id = $request['id'];
+    return \objects\get_object( $id );
+}
+
 function register_routes() {
     register_rest_route( 'activitypub/v1', '/actor/(?P<handle>[a-zA-Z0-9-]+)', array(
         'methods' => 'GET',
@@ -25,5 +31,9 @@ function register_routes() {
         'methods' => 'POST',
         'callback' => __NAMESPACE__ . '\post_to_outbox',
     ) );
+    register_rest_route( 'activitypub/v1', '/object/(?P<id>[0-9]+)', array(
+        'methods' => 'GET',
+        'callback' => __NAMESPACE__ . '\get_object',
+    ) );
 }
 ?>
diff --git a/inc/init.php b/inc/init.php
index a498c54..afc8598 100644
--- a/inc/init.php
+++ b/inc/init.php
@@ -3,7 +3,7 @@ namespace init;
 
 require_once plugin_dir_path( __FILE__ ) . '/outbox.php';
 require_once plugin_dir_path( __FILE__ ) . '/api.php';
-require_once plugin_dir_path( __FILE__ ) . '/activities/create.php';
+require_once plugin_dir_path( __FILE__ ) . '/objects.php';
 
 add_action( 'rest_api_init', function() {
     \api\register_routes();
@@ -11,6 +11,6 @@ add_action( 'rest_api_init', function() {
 
 add_action( 'activitypub_init', function() {
     \outbox\create_outbox_table();
-    \activities\create\create_object_table();
+    \objects\create_object_table();
 } );
 ?>
diff --git a/inc/objects.php b/inc/objects.php
new file mode 100644
index 0000000..4bdcdd1
--- /dev/null
+++ b/inc/objects.php
@@ -0,0 +1,35 @@
+<?php
+namespace objects;
+
+function persist_object( $object ) {
+    global $wpdb;
+    $wpdb->insert( 'activitypub_objects', array( 'object' => wp_json_encode( $object ) ) );
+    $object["id"] = get_object_url( $wpdb->insert_id );
+    return $object;
+}
+
+function get_object( $id ) {
+    global $wpdb;
+    $object = json_decode( $wpdb->get_var( sprintf(
+        'SELECT object FROM activitypub_objects WHERE id = %d', $id
+    ) ) );
+    $object["id"] = get_object_url( $id );
+    return $object;
+}
+
+function get_object_url( $id ) {
+    return get_rest_url( null, sprintf( '/activitypub/v1/object/%d', $id );
+}
+
+function create_object_table() {
+    global $wpdb;
+    $wpdb->query(
+        "
+        CREATE TABLE IF NOT EXISTS activitypub_objects (
+            id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+            object TEXT NOT NULL
+        );
+        "
+    );
+}
+?>