add conditional proxy

Gummibeer · Gummibeer · commit 073ac899a316 · 2020-06-10T20:51:54.000+02:00
diff --git a/src/BaseObject.php b/src/BaseObject.php
@@ -9,8 +9,18 @@ abstract class BaseObject
     /** @var BaseObject[] */
     protected array $tags = [];
 
-    public function when(bool $condition, Closure $callback)
+    /**
+     * @param $condition
+     * @param Closure|null $callback
+     *
+     * @return $this|ConditionalProxy
+     */
+    public function when($condition, ?Closure $callback = null)
     {
+        if ($callback === null) {
+            return new ConditionalProxy($this, boolval($condition));
+        }
+
         if ($condition) {
             $callback($this);
         }
diff --git a/src/ConditionalProxy.php b/src/ConditionalProxy.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Astrotomic\OpenGraph;
+
+/** @mixin BaseObject */
+class ConditionalProxy
+{
+    protected BaseObject $object;
+    protected bool $condition;
+
+    public function __construct(BaseObject $object, bool $condition)
+    {
+        $this->object = $object;
+        $this->condition = $condition;
+    }
+
+    public function __call(string $name, array $arguments)
+    {
+        if($this->condition) {
+            call_user_func_array([$this->object, $name], $arguments);
+        }
+
+        return $this->object;
+    }
+}
diff --git a/tests/GlobalTypesTest.php b/tests/GlobalTypesTest.php
@@ -34,6 +34,32 @@ public function __toString()
     assertMatchesHtmlSnapshot((string) $og);
 })->group('global', 'website');
 
+it('can generate website tags with conditional callbacks', function () {
+    $og = Website::make('Title | Example')
+        ->url('http://www.example.com')
+        ->description('Description')
+        ->locale('en_US')
+        ->when(false, fn(Website $og) => $og->alternateLocale('de_DE'))
+        ->when(true, fn(Website $og) => $og->alternateLocale('en_GB'))
+        ->siteName('Example')
+        ->image('http://www.example.com/image1.jpg');
+
+    assertMatchesHtmlSnapshot((string) $og);
+})->group('global', 'website');
+
+it('can generate website tags with conditional proxies', function () {
+    $og = Website::make('Title | Example')
+        ->url('http://www.example.com')
+        ->description('Description')
+        ->locale('en_US')
+        ->when(false)->alternateLocale('de_DE')
+        ->when(true)->alternateLocale('en_GB')
+        ->siteName('Example')
+        ->image('http://www.example.com/image1.jpg');
+
+    assertMatchesHtmlSnapshot((string) $og);
+})->group('global', 'website');
+
 it('can generate article tags', function () {
     $og = Article::make('Article | Example')
         ->url('http://www.example.com/article')
diff --git a/tests/__snapshots__/GlobalTypesTest__it_can_generate_website_tags_with_conditional_callbacks__1.html b/tests/__snapshots__/GlobalTypesTest__it_can_generate_website_tags_with_conditional_callbacks__1.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
+<html><head>
+<meta property="og:type" content="website">
+<meta property="og:title" content="Title | Example">
+<meta property="og:url" content="http://www.example.com">
+<meta property="og:description" content="Description">
+<meta property="og:locale" content="en_US">
+<meta property="og:locale:alternate" content="en_GB">
+<meta property="og:site_name" content="Example">
+<meta property="og:image:url" content="http://www.example.com/image1.jpg">
+</head></html>
diff --git a/tests/__snapshots__/GlobalTypesTest__it_can_generate_website_tags_with_conditional_proxies__1.html b/tests/__snapshots__/GlobalTypesTest__it_can_generate_website_tags_with_conditional_proxies__1.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
+<html><head>
+<meta property="og:type" content="website">
+<meta property="og:title" content="Title | Example">
+<meta property="og:url" content="http://www.example.com">
+<meta property="og:description" content="Description">
+<meta property="og:locale" content="en_US">
+<meta property="og:locale:alternate" content="en_GB">
+<meta property="og:site_name" content="Example">
+<meta property="og:image:url" content="http://www.example.com/image1.jpg">
+</head></html>
