From b25345a46dc638565abaedc0516b69967331d562 Mon Sep 17 00:00:00 2001
From: Kendrick Chan <kc@jankstudio.com>
Date: Sun, 7 Jan 2018 00:49:18 +0800
Subject: [PATCH] Add ACL generator component with test controller and route

---
 config/acl.yaml                   |  32 +++++++++
 config/routes.yaml                |   4 ++
 config/services.yaml              |   9 ++-
 src/Access/Generator.php          | 108 ++++++++++++++++++++++++++++++
 src/Controller/TestController.php |  19 ++++++
 5 files changed, 171 insertions(+), 1 deletion(-)
 create mode 100644 config/acl.yaml
 create mode 100644 src/Access/Generator.php
 create mode 100644 src/Controller/TestController.php

diff --git a/config/acl.yaml b/config/acl.yaml
new file mode 100644
index 00000000..cc59b3fb
--- /dev/null
+++ b/config/acl.yaml
@@ -0,0 +1,32 @@
+access_keys:
+    - id: dashboard
+      label: Dashboard Access
+      acls:
+        - id: dashboard.menu
+          label: Menu
+    - id: user
+      label: User Access
+      acls:
+        - id: user.menu
+          label: Menu
+        - id: user.list
+          label: List
+        - id: user.add
+          label: Add
+        - id: user.update
+          label: Update
+        - id: user.delete
+          label: Delete
+    - id: role
+      label: Role Access
+      acls:
+        - id: role.menu
+          label: Menu
+        - id: role.list
+          label: List
+        - id: role.add
+          label: Add
+        - id: role.update
+          label: Update
+        - id: role.delete
+          label: Delete
diff --git a/config/routes.yaml b/config/routes.yaml
index f2c6674d..e2127d9a 100644
--- a/config/routes.yaml
+++ b/config/routes.yaml
@@ -17,3 +17,7 @@ logout:
 user_list:
     path: /users
     controller: App\Controller\UserController::index
+
+test_acl:
+    path: /test_acl
+    controller: App\Controller\TestController::index
diff --git a/config/services.yaml b/config/services.yaml
index 927ff453..6d6cf31a 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -15,7 +15,7 @@ services:
     # this creates a service per class whose id is the fully-qualified class name
     App\:
         resource: '../src/*'
-        exclude: '../src/{Entity,Migrations,Tests,Menu}'
+        exclude: '../src/{Entity,Migrations,Tests,Menu,Access}'
 
     # controllers are imported separately to make sure services can be injected
     # as action arguments even if you don't extend any base controller class
@@ -31,3 +31,10 @@ services:
             $router: "@router.default"
             $cache_dir: "%kernel.cache_dir%"
             $config_dir: "%kernel.root_dir%/../config"
+
+    App\Access\Generator:
+        class: App\Access\Generator
+        arguments:
+            $router: "@router.default"
+            $cache_dir: "%kernel.cache_dir%"
+            $config_dir: "%kernel.root_dir%/../config"
diff --git a/src/Access/Generator.php b/src/Access/Generator.php
new file mode 100644
index 00000000..1ec1d098
--- /dev/null
+++ b/src/Access/Generator.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace App\Access;
+
+use Symfony\Component\Routing\Exception\RouteNotFoundException;
+use Symfony\Component\Yaml\Parser as YamlParser;
+use Symfony\Component\Config\ConfigCache;
+use Symfony\Component\Config\Resource\FileResource;
+
+use Symfony\Component\Routing\RouterInterface;
+
+class Generator
+{
+    protected $router;
+    protected $cache_dir;
+    protected $config_dir;
+
+    public function __construct(RouterInterface $router, string $cache_dir, string $config_dir)
+    {
+        $this->router = $router;
+        $this->cache_dir = $cache_dir;
+        $this->config_dir = $config_dir;
+    }
+
+    public function getACL()
+    {
+        $key = 'access_keys';
+
+        // cache config
+        $cache_file = $this->cache_dir . '/' . $key . '.serial';
+        $cache = new ConfigCache($cache_file, true);
+
+        // cache not fresh
+        if (!$cache->isFresh())
+        {
+            $files = [];
+            $resources = [];
+
+            try
+            {
+                // get location of acl.yaml
+                $path = $this->config_dir . '/acl.yaml';
+                $files[] = $path;
+                $resources[] = new FileResource($path);
+
+                // process acl config file
+                $data = $this->parseMenu($path, $key);
+            }
+            catch (\InvalidArgumentException $e)
+            {
+                error_log($e->getMessage());
+                error_log($key . ' key not found in acl.yaml file.');
+                return $data;
+            }
+
+            $acl_serial = serialize($data);
+            $cache->write($acl_serial, $resources);
+        }
+        else
+        {
+            $acl_serial = file_get_contents($cache_file);
+            $data = unserialize($acl_serial);
+        }
+
+        return $data;
+    }
+
+    protected function parseMenu($path, $key)
+    {
+        $parser = new YamlParser();
+        $config = $parser->parse(file_get_contents($path));
+
+        // check if we have menu items
+        if (!isset($config[$key]))
+        {
+            error_log('No ' . $key . ' found for ' . $path);
+            return;
+        }
+
+        $acl_hierarchy = [];
+        $acl_index = [];
+
+        // go through each one
+        foreach ($config[$key] as $acl_data)
+        {
+            // build hierarchy
+            $acl_hierarchy[$acl_data['id']] = [
+                'label' => $acl_data['label'],
+                'acls' => []
+            ];
+
+            foreach ($acl_data['acls'] as $acl)
+            {
+                $id = $acl['id'];
+                $label = $acl['label'];
+
+                // set hierarchy and index
+                $acl_hierarchy[$acl_data['id']]['acls'][$id] = $label;
+                $acl_index[$id] = $label;
+            }
+        }
+
+        return [
+            'hierarchy' => $acl_hierarchy,
+            'index' => $acl_index
+        ];
+    }
+}
diff --git a/src/Controller/TestController.php b/src/Controller/TestController.php
new file mode 100644
index 00000000..04eb7c11
--- /dev/null
+++ b/src/Controller/TestController.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Controller;
+
+use App\Ramcar\BaseController;
+use App\Access\Generator;
+
+class TestController extends BaseController
+{
+    public function index(Generator $acl_gen)
+    {
+        $params = $this->initParameters('home');
+
+        $acl_data = $acl_gen->getACL();
+        error_log(print_r($acl_data, true));
+
+        return $this->render('home.html.twig', $params);
+    }
+}