find mime type

Signed-off-by: rahul <[email protected]>

Author: rcsofttech85

composer.json

@@ -19,12 +19,12 @@
     "php": ">8.2",
     "ext-sodium": "*",
     "ext-ctype": "*",
-    "ext-zip": "*"
+    "ext-zip": "*",
+    "ext-fileinfo": "*"
   },
   "require-dev": {
     "phpunit/phpunit": "^10",
     "squizlabs/php_codesniffer": "^3.7",
-    "symfony/dotenv": "^6.3",
-    "ext-fileinfo": "*"
+    "symfony/dotenv": "^6.3"
   }
 }

src/FileHandler.php

@@ -2,6 +2,7 @@
 
 namespace rcsofttech85\FileHandler;
 
+use finfo;
 use Generator;
 use rcsofttech85\FileHandler\Exception\FileHandlerException;
 use ZipArchive;
@@ -69,6 +70,24 @@ public function compress(string $filename, string $zipFilename): void
         $zip->close();
     }
 
+    /**
+     * @throws FileHandlerException
+     */
+    public function getMimeType(string $filename): string
+    {
+        if (!file_exists($filename)) {
+            throw new FileHandlerException('file does not exist.');
+        }
+
+        $fileInfo = new finfo(FILEINFO_MIME_TYPE);
+        $mimeType = $fileInfo->file($filename);
+        if (!$mimeType) {
+            throw new FileHandlerException('unknown mime type');
+        }
+
+        return $mimeType;
+    }
+
     /**
      * @throws FileHandlerException
      */

tests/unit/FileHandlerTest.php

@@ -2,7 +2,6 @@
 
 namespace unit;
 
-use finfo;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\Attributes\TestDox;
@@ -135,6 +134,7 @@ public function studioIsFoundForExactNameMatch(string $keyword)
         $this->assertTrue($isStudioFound);
     }
 
+
     #[Test]
     public function successfulCompression()
     {
@@ -143,13 +143,22 @@ public function successfulCompression()
 
         $this->fileHandler->compress($testFile, $compressedZipFilename);
 
-        $fileInfo = new finfo(FILEINFO_MIME_TYPE);
-        $mimeType = $fileInfo->file($compressedZipFilename);
+        $mimeType = $this->fileHandler->getMimeType($compressedZipFilename);
 
         $this->assertFileExists($compressedZipFilename);
         $this->assertEquals('application/zip', $mimeType);
     }
 
+    #[Test]
+    public function getMimeTypeFunctionReturnsCorrectInfo()
+    {
+        $csvFile = $this->fileHandler->getMimeType("movie.csv");
+        $zipFile = $this->fileHandler->getMimeType("compressed.zip");
+
+        $this->assertEquals("text/csv", $csvFile);
+        $this->assertEquals('application/zip', $zipFile);
+    }
+
     #[Test]
     public function successfulDecompression()
     {