From 74a6edf3000d4820b9323d00afc89601ced1eeeb Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Sun, 17 Jan 2021 11:29:13 +1030
Subject: [PATCH] Polyfill old behavior

---
 src/Context.php       | 16 ++++++++++++++++
 src/Handler/Index.php | 12 +++++++++++-
 src/Schema/Type.php   | 11 +++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 src/Context.php

diff --git a/src/Context.php b/src/Context.php
new file mode 100644
index 0000000..dcac9ed
--- /dev/null
+++ b/src/Context.php
@@ -0,0 +1,16 @@
+<?php
+/*
+ * This file is part of tobyz/json-api-server.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Tobyz\JsonApiServer;
+
+class Context
+{
+    public $query;
+}
diff --git a/src/Handler/Index.php b/src/Handler/Index.php
index b0302db..4e71004 100644
--- a/src/Handler/Index.php
+++ b/src/Handler/Index.php
@@ -19,6 +19,7 @@ use JsonApiPhp\JsonApi\Link\PrevLink;
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
 use Psr\Http\Server\RequestHandlerInterface;
+use Tobyz\JsonApiServer\Context;
 use Tobyz\JsonApiServer\Exception\BadRequestException;
 use Tobyz\JsonApiServer\JsonApi;
 use Tobyz\JsonApiServer\JsonApiResponse;
@@ -75,6 +76,14 @@ class Index implements RequestHandlerInterface
         foreach ($models as $model) {
             $serializer->add($this->resource, $model, $include);
         }
+        
+        $context = new Context;
+        $context->query = $query;
+        $documentMeta = [];
+
+        foreach ($schema->getDocumentMeta() as $key => $value) {
+            $documentMeta[] = new Structure\Meta($key, $value($context));
+        }
 
         return new JsonApiResponse(
             new Structure\CompoundDocument(
@@ -86,7 +95,8 @@ class Index implements RequestHandlerInterface
                 new Structure\Link\SelfLink($this->buildUrl($request)),
                 new Structure\Meta('offset', $offset),
                 new Structure\Meta('limit', $limit),
-                ...($total !== null ? [new Structure\Meta('total', $total)] : [])
+                ...($total !== null ? [new Structure\Meta('total', $total)] : []),
+                ...$documentMeta
             )
         );
     }
diff --git a/src/Schema/Type.php b/src/Schema/Type.php
index 78d50fd..4789413 100644
--- a/src/Schema/Type.php
+++ b/src/Schema/Type.php
@@ -35,6 +35,7 @@ final class Type
     private $updatable = false;
     private $deletable = false;
     private $deleteCallback;
+    private $documentMeta = [];
 
     /**
      * Set the description of the type for documentation generation.
@@ -483,4 +484,14 @@ final class Type
     {
         return $this->defaultFilter;
     }
+
+    public function documentMeta($key, $value)
+    {
+        $this->documentMeta[$key] = $value;
+    }
+
+    public function getDocumentMeta()
+    {
+        return $this->documentMeta;
+    }
 }