Some refactorings in content generation

src/Exporters/Http/HttpRequest.php

@@ -7,47 +7,64 @@ namespace PmConverter\Exporters\Http;
 use PmConverter\Exporters\Abstract\AbstractRequest;
 
 /**
- *
+ * Class to determine file content with http request format
  */
 class HttpRequest extends AbstractRequest
 {
     /**
-     * @return string
+     * @inheritDoc
      */
-    protected function prepareBody(): ?string
+    protected function prepareDescription(): array
     {
-        switch ($this->bodymode) {
-            case 'formdata':
-                $body = [];
-                foreach ($this->body as $data) {
-                    $body[] = sprintf(
-                        '%s%s=%s',
-                        empty($data->disabled) ? '' : '# ',
-                        $data->key,
-                        $data->type === 'file' ? "$data->src" : $data->value
-                    );
-                }
-                return implode(PHP_EOL, $body);
-            default:
-                return $this->body;
-        }
+        return empty($this->description)
+            ? []
+            : ['# ' . str_replace("\n", "\n# ", $this->description), ''];
     }
 
     /**
-     * @return string
+     * @inheritDoc
      */
-    public function __toString(): string
+    protected function prepareHeaders(): array
     {
-        if ($this->description) {
-            $output[] = '# ' . str_replace("\n", "\n# ", $this->description);
-            $output[] = '';
-        }
         $output[] = "$this->verb $this->url $this->http";
         foreach ($this->headers as $header_key => $header) {
             $output[] = sprintf('%s%s: %s', $header['disabled'] ? '# ' : '', $header_key, $header['value']);
         }
-        $output[] = '';
-        $output[] = (string)$this->prepareBody();
+        return $output;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function prepareBody(): array
+    {
+        switch ($this->bodymode) {
+            case 'formdata':
+                $output = [''];
+                foreach ($this->body as $data) {
+                    $output[] = sprintf(
+                        '%s%s=%s',
+                        empty($data->disabled) ? '' : '# ',
+                        $data->key,
+                        $data->type === 'file' ? $data->src : $data->value
+                    );
+                }
+                return $output;
+            default:
+                return ['', $this->body];
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function __toString(): string
+    {
+        $output = array_merge(
+            $this->prepareDescription(),
+            $this->prepareHeaders(),
+            $this->prepareBody()
+        );
         return implode(PHP_EOL, $output);
     }
 }