From 4e2be47479e95dd8ac1906342edd8d489168078b Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Tue, 1 Mar 2016 19:50:12 +0100
Subject: [PATCH 1/2] Lint gpm

---
 classes/gpm.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/classes/gpm.php b/classes/gpm.php
index 2b429e4b..45f35d9c 100644
--- a/classes/gpm.php
+++ b/classes/gpm.php
@@ -9,10 +9,16 @@ use Grav\Common\GPM\Upgrader;
 use Grav\Common\Filesystem\Folder;
 use Grav\Common\GPM\Common\Package;
 
+/**
+ * Class Gpm
+ * @package Grav\Plugin\Admin
+ */
 class Gpm
 {
     // Probably should move this to Grav DI container?
+    /** @var GravGPM */
     protected static $GPM;
+
     public static function GPM()
     {
         if (!static::$GPM) {
@@ -86,8 +92,6 @@ class Gpm
             Installer::install($local, $options['destination'], ['install_path' => $package->install_path, 'theme' => $options['theme']]);
             Folder::delete(dirname($local));
 
-            $errorCode = Installer::lastErrorCode();
-
             if (Installer::lastErrorCode() & (Installer::ZIP_OPEN_ERROR | Installer::ZIP_EXTRACT_ERROR)) {
                 return false;
             }

From 97e17500f436b4ad64f02db3d833453feddb3894 Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Tue, 1 Mar 2016 19:52:24 +0100
Subject: [PATCH 2/2] Add dependencies() method in Admin

Generate an array of nested dependencies for a package, optionally
without duplicates
---
 classes/admin.php | 50 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/classes/admin.php b/classes/admin.php
index 0d4ec834..18a18a2e 100644
--- a/classes/admin.php
+++ b/classes/admin.php
@@ -476,6 +476,56 @@ class Admin
         });
     }
 
+    /**
+     * Generate an array of nested dependencies for a package
+     *
+     * @param string $slug               The package slug
+     * @param bool   $remove_duplicates  True if should remove duplicates after first occurrence
+     * @param array  $keys_already_added Used for recursion
+     *
+     * @return array|bool
+     */
+    public function dependencies($slug, $remove_duplicates = false, $keys_already_added = [])
+    {
+        $gpm = $this->gpm();
+
+        if (!$gpm) {
+            return false;
+        }
+
+        $package = $this->plugins(true)[$slug];
+        if (!$package) {
+            $package = $this->themes(true)[$slug];
+        }
+
+        $dependencies = [];
+
+        if ($package) {
+            if ($package->dependencies) {
+                if (!$keys_already_added) {
+                    $keys_already_added = array_values($package->dependencies);
+                }
+
+                foreach ($package->dependencies as $dependency) {
+                    $temp_dependencies = $this->dependencies($dependency, $keys_already_added);
+
+                    if ($remove_duplicates) {
+                        foreach($keys_already_added as $key => $value) {
+                            if (is_string($value)) {
+                                unset($temp_dependencies[$value]);
+                            }
+                        }
+                    }
+
+                    $keys_already_added = array_merge($keys_already_added, array_values($temp_dependencies));
+                    $dependencies[$dependency] = $temp_dependencies;
+                }
+            }
+        }
+
+        return $dependencies;
+    }
+
     /**
      * Get all themes.
      *