Refactor error handling internally to follow RFC7807 (#362)

* Refactor error handling internally to follow RFC7807

* style fixes

app/Exceptions/PirepCancelled.php

@@ -2,25 +2,38 @@
 
 namespace App\Exceptions;
 
-use Symfony\Component\HttpKernel\Exception\HttpException;
+use App\Models\Pirep;
 
-/**
- * Class PirepCancelled
- */
 class PirepCancelled extends HttpException
 {
-    public function __construct(
-        string $message = null,
-        \Exception $previous = null,
-        int $code = 0,
-        array $headers = []
-    ) {
+    private $pirep;
+
+    public function __construct(Pirep $pirep)
+    {
+        $this->pirep = $pirep;
         parent::__construct(
             400,
-            'PIREP has been cancelled, updates are not allowed',
-            $previous,
-            $headers,
-            $code
+            'PIREP has been cancelled, updates are not allowed'
         );
     }
+
+    /**
+     * Return the RFC 7807 error type (without the URL root)
+     */
+    public function getErrorType(): string
+    {
+        return 'pirep-cancelled';
+    }
+
+    public function getErrorDetails(): string
+    {
+        return $this->getMessage();
+    }
+
+    public function getErrorMetadata(): array
+    {
+        return [
+            'pirep_id' => $this->pirep->id,
+        ];
+    }
 }