Change signature of internal methods

The following internal methods now return enum MediaType instead of
string.

Intervention\Image\AbstractDecoder::getMediaTypeByFilePath()
Intervention\Image\AbstractDecoder::getMediaTypeByBinary()

src/Drivers/Gd/Decoders/AbstractDecoder.php

@@ -7,6 +7,7 @@ namespace Intervention\Image\Drivers\Gd\Decoders;
 use Intervention\Image\Drivers\SpecializableDecoder;
 use Intervention\Image\Exceptions\DecoderException;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Intervention\Image\MediaType;
 
 abstract class AbstractDecoder extends SpecializableDecoder implements SpecializedInterface
 {
@@ -15,9 +16,9 @@ abstract class AbstractDecoder extends SpecializableDecoder implements Specializ
      *
      * @param string $filepath
      * @throws DecoderException
-     * @return string
+     * @return MediaType
      */
-    protected function getMediaTypeByFilePath(string $filepath): string
+    protected function getMediaTypeByFilePath(string $filepath): MediaType
     {
         $info = @getimagesize($filepath);
 
@@ -29,7 +30,7 @@ abstract class AbstractDecoder extends SpecializableDecoder implements Specializ
             throw new DecoderException('Unable to decode input');
         }
 
-        return $info['mime'];
+        return MediaType::from($info['mime']);
     }
 
     /**
@@ -37,9 +38,9 @@ abstract class AbstractDecoder extends SpecializableDecoder implements Specializ
      *
      * @param string $data
      * @throws DecoderException
-     * @return string
+     * @return MediaType
      */
-    protected function getMediaTypeByBinary(string $data): string
+    protected function getMediaTypeByBinary(string $data): MediaType
     {
         $info = @getimagesizefromstring($data);
 
@@ -51,6 +52,6 @@ abstract class AbstractDecoder extends SpecializableDecoder implements Specializ
             throw new DecoderException('Unable to decode input');
         }
 
-        return $info['mime'];
+        return MediaType::from($info['mime']);
     }
 }

src/Drivers/Gd/Decoders/FilePathImageDecoder.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Intervention\Image\Drivers\Gd\Decoders;
 
 use Intervention\Image\Exceptions\DecoderException;
+use Intervention\Image\Format;
 use Intervention\Image\Interfaces\ColorInterface;
 use Intervention\Image\Interfaces\DecoderInterface;
 use Intervention\Image\Interfaces\ImageInterface;
@@ -21,23 +22,16 @@ class FilePathImageDecoder extends NativeObjectDecoder implements DecoderInterfa
         // detect media (mime) type
         $mediaType = $this->getMediaTypeByFilePath($input);
 
-        $image = match ($mediaType) {
+        $image = match ($mediaType->format()) {
             // gif files might be animated and therefore cannot
             // be handled by the standard GD decoder.
-            'image/gif' => $this->decodeGif($input),
+            Format::GIF => $this->decodeGif($input),
-            default => parent::decode(match ($mediaType) {
+            default => parent::decode(match ($mediaType->format()) {
-                'image/jpeg', 'image/jpg', 'image/pjpeg' => @imagecreatefromjpeg($input),
+                Format::JPEG => @imagecreatefromjpeg($input),
-                'image/webp', 'image/x-webp' => @imagecreatefromwebp($input),
+                Format::WEBP => @imagecreatefromwebp($input),
-                'image/png', 'image/x-png' => @imagecreatefrompng($input),
+                Format::PNG => @imagecreatefrompng($input),
-                'image/avif', 'image/x-avif' => @imagecreatefromavif($input),
+                Format::AVIF => @imagecreatefromavif($input),
-                'image/bmp',
+                Format::BMP => @imagecreatefrombmp($input),
-                'image/ms-bmp',
-                'image/x-bitmap',
-                'image/x-bmp',
-                'image/x-ms-bmp',
-                'image/x-win-bitmap',
-                'image/x-windows-bmp',
-                'image/x-xbitmap' => @imagecreatefrombmp($input),
                 default => throw new DecoderException('Unable to decode input'),
             }),
         };

src/Origin.php

@@ -40,12 +40,15 @@ class Origin
     /**
      * Set media type of current instance
      *
-     * @param string $type
+     * @param string|MediaType $type
      * @return Origin
      */
-    public function setMediaType(string $type): self
+    public function setMediaType(string|MediaType $type): self
     {
-        $this->mediaType = $type;
+        $this->mediaType = match (true) {
+            is_string($type) => $type,
+            default => $type->value,
+        };
 
         return $this;
     }

tests/Unit/Drivers/Gd/Decoders/AbstractDecoderTest.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Intervention\Image\Tests\Unit\Drivers\Gd\Decoders;
 
 use Intervention\Image\Drivers\Gd\Decoders\AbstractDecoder;
+use Intervention\Image\MediaType;
 use Intervention\Image\Tests\BaseTestCase;
 use Mockery;
 
@@ -13,12 +14,18 @@ final class AbstractDecoderTest extends BaseTestCase
     public function testGetMediaTypeFromFilePath(): void
     {
         $decoder = Mockery::mock(AbstractDecoder::class)->makePartial();
-        $this->assertEquals('image/jpeg', $decoder->getMediaTypeByFilePath($this->getTestResourcePath('test.jpg')));
+        $this->assertEquals(
+            MediaType::IMAGE_JPEG,
+            $decoder->getMediaTypeByFilePath($this->getTestResourcePath('test.jpg'))
+        );
     }
 
     public function testGetMediaTypeFromFileBinary(): void
     {
         $decoder = Mockery::mock(AbstractDecoder::class)->makePartial();
-        $this->assertEquals('image/jpeg', $decoder->getMediaTypeByBinary($this->getTestResourceData('test.jpg')));
+        $this->assertEquals(
+            MediaType::IMAGE_JPEG,
+            $decoder->getMediaTypeByBinary($this->getTestResourceData('test.jpg')),
+        );
     }
 }