wip

Author: NeoIsRecursive

packages/http/src/IsRequest.php

@@ -12,6 +12,7 @@
 use function Tempest\get;
 use function Tempest\Support\Arr\get_by_key;
 use function Tempest\Support\Arr\has_key;
+use function Tempest\Support\str;
 
 /** @phpstan-require-implements \Tempest\Http\Request */
 trait IsRequest
@@ -136,6 +137,26 @@ public function hasQuery(string $key): bool
         return has_key($this->query, $key);
     }
 
+    public function accepts(ContentType $contentType): bool
+    {
+        $header = $this->headers->get(name: 'accept');
+
+        if ($header === null) {
+            return true;
+        }
+
+        $accepts = str($header)
+            ->explode(separator: ',')
+            ->map(static fn (string $item) => trim($item))
+            ->filter(static fn (string $item) => $item !== '');
+
+        if ($accepts->isEmpty() || $accepts->contains(search: '*/*')) {
+            return true;
+        }
+
+        return $accepts->contains(search: $contentType->value);
+    }
+
     public function withMethod(Method $method): self
     {
         $clone = clone $this;

packages/http/src/Request.php

@@ -57,4 +57,6 @@ public function get(string $key, mixed $default = null): mixed;
     public function getSessionValue(string $name): mixed;
 
     public function getCookie(string $name): ?Cookie;
+
+    public function accepts(ContentType $contentType): bool;
 }

packages/http/tests/GenericRequestTest.php

@@ -6,6 +6,7 @@
 
 use LogicException;
 use PHPUnit\Framework\TestCase;
+use Tempest\Http\ContentType;
 use Tempest\Http\GenericRequest;
 use Tempest\Http\Header;
 use Tempest\Http\Method;
@@ -61,4 +62,61 @@ public function test_throws_on_unset(): void
         $this->expectException(LogicException::class);
         unset($headers['x']);
     }
+
+    public function test_accepts_with_accept_header(): void
+    {
+        $request = new GenericRequest(
+            method: Method::GET,
+            uri: '/',
+            headers: [
+                'Accept' => 'application/json',
+            ],
+        );
+
+        $this->assertTrue($request->accepts(ContentType::JSON));
+        $this->assertFalse($request->accepts(ContentType::HTML));
+        $this->assertFalse($request->accepts(ContentType::XML));
+    }
+
+    public function test_accepts_with_no_accept_header(): void
+    {
+        $request = new GenericRequest(
+            method: Method::GET,
+            uri: '/',
+        );
+
+        $this->assertTrue($request->accepts(ContentType::JSON));
+        $this->assertTrue($request->accepts(ContentType::HTML));
+        $this->assertTrue($request->accepts(ContentType::XML));
+    }
+
+    public function test_accepts_with_wildcard(): void
+    {
+        $request = new GenericRequest(
+            method: Method::GET,
+            uri: '/',
+            headers: [
+                'Accept' => '*/*',
+            ],
+        );
+
+        $this->assertTrue($request->accepts(ContentType::JSON));
+        $this->assertTrue($request->accepts(ContentType::HTML));
+        $this->assertTrue($request->accepts(ContentType::XML));
+    }
+
+    public function test_accepts_with_multiple_values(): void
+    {
+        $request = new GenericRequest(
+            method: Method::GET,
+            uri: '/',
+            headers: [
+                'Accept' => 'application/json, text/html',
+            ],
+        );
+
+        $this->assertTrue($request->accepts(ContentType::JSON));
+        $this->assertTrue($request->accepts(ContentType::HTML));
+        $this->assertFalse($request->accepts(ContentType::XML));
+    }
 }