From a6e7cdb37da916af798097dd339182031c1c90e8 Mon Sep 17 00:00:00 2001
From: Eder Soares <edersoares@me.com>
Date: Mon, 9 Sep 2024 09:57:58 -0300
Subject: [PATCH] Adds cache to proxy type

---
 src/FrontendProxyController.php       | 14 +++++++++++++-
 src/Frontier.php                      |  8 ++++++++
 tests/FrontendProxyControllerTest.php | 26 ++++++++++++++++++++++++++
 3 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/src/FrontendProxyController.php b/src/FrontendProxyController.php
index 41a9775..0cca8c2 100644
--- a/src/FrontendProxyController.php
+++ b/src/FrontendProxyController.php
@@ -16,8 +16,16 @@ public function __construct(protected Request $request)
 
     public function __invoke($uri, $config): Response
     {
+        $method = $this->request->getMethod();
         $accept = $this->request->header('accept', '*/*');
         $url = trim($config['url'], '/') . '/' . trim($uri, '/');
+        $cacheKey = str($config['url'])->replace(['/', '.'], '-')->value();
+
+        $path = storage_path("framework/views/frontier-$method-$cacheKey");
+
+        if ($method === 'GET' && $config['cache'] && file_exists($path)) {
+            return new Response(file_get_contents($path));
+        }
 
         if ($config['rewrite']) {
             $url = str_replace(
@@ -31,7 +39,7 @@ public function __invoke($uri, $config): Response
             'Accept' => $accept,
         ]);
 
-        $response = match ($this->request->getMethod()) {
+        $response = match ($method) {
             'GET' => $http->get($url),
             'HEAD' => $http->head($url),
             'POST' => $http->post($url, $this->request->all()),
@@ -51,6 +59,10 @@ public function __invoke($uri, $config): Response
             );
         }
 
+        if ($config['cache']) {
+            file_put_contents($path, $content);
+        }
+
         return new Response($content, headers: [
             'content-type' => $contextType,
         ]);
diff --git a/src/Frontier.php b/src/Frontier.php
index 205f0a0..089e0b6 100644
--- a/src/Frontier.php
+++ b/src/Frontier.php
@@ -45,9 +45,16 @@ private static function proxy(array $config): void
             $methods = [];
             $replaces = [];
             $rewrite = [];
+            $cache = false;
             $proxyAll = true;
 
             foreach ($segments as $segment) {
+                $cache = false;
+
+                if ($segment === 'cache') {
+                    $cache = true;
+                }
+
                 if ($segment === 'exact') {
                     $proxyAll = false;
                 }
@@ -99,6 +106,7 @@ private static function proxy(array $config): void
                         'replaces' => $replaces,
                         'rewrite' => $rewrite,
                         'methods' => $methods,
+                        'cache' => $cache,
                     ],
                 ]);
         }
diff --git a/tests/FrontendProxyControllerTest.php b/tests/FrontendProxyControllerTest.php
index 6ed835c..5009e5b 100644
--- a/tests/FrontendProxyControllerTest.php
+++ b/tests/FrontendProxyControllerTest.php
@@ -20,6 +20,7 @@
         '/all::replace(Replace,is amazing!)',
         '/web',
         '/all-methods::methods(get,head,options,post,put,patch,delete)',
+        '/with-cache::cache',
     ],
 ]));
 
@@ -163,3 +164,28 @@
 
     Http::assertSent(fn (Request $request) => $request->method() === 'DELETE');
 });
+
+test('proxy and do cache', function () {
+    $file = storage_path('framework/views/frontier-GET-frontier-test-with-cache');
+    $text = 'Frontier by HTTP';
+
+    Http::fake([
+        'frontier.test/*' => Http::response($text),
+    ]);
+
+    $this->assertFileDoesNotExist($file);
+
+    $this->get('/with-cache')
+        ->assertStatus(200)
+        ->assertSeeText($text);
+
+    $this->assertFileExists($file);
+    $this->assertStringEqualsFile($file, $text);
+
+    $this->get('/with-cache')
+        ->assertStatus(200)
+        ->assertSeeText($text);
+
+    // Remove cache
+    $this->artisan('view:clear');
+});