From be297677e8940b27aaa32a12dbdc212ab88162de Mon Sep 17 00:00:00 2001
From: Matias Griese <matias@kunena.org>
Date: Thu, 18 Feb 2016 14:16:37 +0200
Subject: [PATCH] Blueprint extend: Fix extending blueprints for configuration

---
 composer.lock                                 |   8 +-
 .../Grav/Common/Config/CompiledBlueprints.php | 105 +++++++++++++++++-
 2 files changed, 106 insertions(+), 7 deletions(-)

diff --git a/composer.lock b/composer.lock
index 527905e1b..093ff4a34 100644
--- a/composer.lock
+++ b/composer.lock
@@ -637,12 +637,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/rockettheme/toolbox.git",
-                "reference": "a88015f9e6e473e5ddf4294f747d8fe434de3857"
+                "reference": "2c6f703d6da8570ec2ab51d5111189e284d5a12e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/rockettheme/toolbox/zipball/a88015f9e6e473e5ddf4294f747d8fe434de3857",
-                "reference": "a88015f9e6e473e5ddf4294f747d8fe434de3857",
+                "url": "https://api.github.com/repos/rockettheme/toolbox/zipball/2c6f703d6da8570ec2ab51d5111189e284d5a12e",
+                "reference": "2c6f703d6da8570ec2ab51d5111189e284d5a12e",
                 "shasum": ""
             },
             "require": {
@@ -677,7 +677,7 @@
                 "php",
                 "rockettheme"
             ],
-            "time": "2016-02-16 10:01:59"
+            "time": "2016-02-18 12:10:06"
         },
         {
             "name": "symfony/console",
diff --git a/system/src/Grav/Common/Config/CompiledBlueprints.php b/system/src/Grav/Common/Config/CompiledBlueprints.php
index d35bbbd45..bd028c0c3 100644
--- a/system/src/Grav/Common/Config/CompiledBlueprints.php
+++ b/system/src/Grav/Common/Config/CompiledBlueprints.php
@@ -4,6 +4,7 @@ namespace Grav\Common\Config;
 use Grav\Common\File\CompiledYamlFile;
 use Grav\Common\Grav;
 use RocketTheme\Toolbox\Blueprints\Blueprints;
+use RocketTheme\Toolbox\ResourceLocator\UniformResourceLocator;
 
 /**
  * The Compiled Blueprints class.
@@ -46,6 +47,11 @@ class CompiledBlueprints extends CompiledBase
         $this->object = (new Blueprints($data))->setTypes($this->getTypes());
     }
 
+    /**
+     * Get list of form field types.
+     *
+     * @return array
+     */
     protected function getTypes()
     {
         return Grav::instance()['plugins']->formFieldTypes;
@@ -63,12 +69,105 @@ class CompiledBlueprints extends CompiledBase
      * Load single configuration file and append it to the correct position.
      *
      * @param  string  $name  Name of the position.
-     * @param  string  $filename  File to be loaded.
+     * @param  array   $files  Files to be loaded.
      */
-    protected function loadFile($name, $filename)
+    protected function loadFile($name, $files)
     {
+        $data = $this->loadBlueprints($files);
+
+        // Merge all extends into a single blueprint.
+        foreach ($data as $content) {
+            $this->object->embed($name, $content, '/', 1);
+        }
+    }
+
+    protected function loadBlueprints(array $files)
+    {
+        $filename = array_shift($files);
         $file = CompiledYamlFile::instance($filename);
-        $this->object->embed($name, $file->content(), '/');
+        $content = $file->content();
         $file->free();
+
+        $extends = isset($content['@extends']) ? (array) $content['@extends']
+            : (isset($content['extends@']) ? (array) $content['extends@'] : null);
+
+        $data = isset($extends) ? $this->extendBlueprint($files, $extends) : [];
+        $data[] = $content;
+
+        return $data;
+    }
+
+    protected function extendBlueprint(array $parents, array $extends)
+    {
+        if (is_string(key($extends))) {
+            $extends = [$extends];
+        }
+
+        $data = [];
+        foreach ($extends as $extendConfig) {
+            // Accept array of type and context or a string.
+            $extendType = !is_string($extendConfig)
+                ? !isset($extendConfig['type']) ? null : $extendConfig['type'] : $extendConfig;
+
+            if (!$extendType) {
+                continue;
+            }
+
+            if ($extendType === '@parent' || $extendType === 'parent@') {
+                $files = $parents;
+
+            } else {
+                if (strpos($extendType, '://')) {
+                    $path = $extendType;
+                } elseif (empty($extendConfig['context'])) {
+                    $path = "blueprints://{$extendType}";
+                } else {
+                    $separator = $extendConfig['context'][strlen($extendConfig['context'])-1] === '/' ? '' : '/';
+                    $path = $extendConfig['context'] . $separator . $extendType;
+                }
+                if (!preg_match('/\.yaml$/', $path)) {
+                    $path .= '.yaml';
+                }
+
+                /** @var UniformResourceLocator $locator */
+                $locator = Grav::instance()['locator'];
+
+                $files = $locator->findResources($path);
+            }
+
+            if ($files) {
+                $data = array_merge($data, $this->loadBlueprints($files));
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * Load and join all configuration files.
+     *
+     * @return bool
+     * @internal
+     */
+    protected function loadFiles()
+    {
+        $this->createObject();
+
+        // Convert file list into parent list.
+        $list = [];
+        foreach ($this->files as $files) {
+            foreach ($files as $name => $item) {
+                $list[$name][] = $this->path . $item['file'];
+            }
+        }
+
+        // Load files.
+        foreach ($list as $name => $files) {
+            $this->loadFile($name, $files);
+        }
+
+        $this->finalizeObject();
+
+        return true;
     }
 }