PHP8

[m6w6/seekat] / lib / API / ContentType / Handler / Json.php

diff --git a/lib/API/ContentType/Handler/Json.php b/lib/API/ContentType/Handler/Json.php
new file mode 100644 (file)
index 0000000..d5b6a58
--- /dev/null
+++ b/lib/API/ContentType/Handler/Json.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace seekat\API\ContentType\Handler;
+
+use http\Message\Body;
+use seekat\API\ContentType\Handler;
+use seekat\Exception\InvalidArgumentException;
+use seekat\Exception\UnexpectedValueException;
+use function seekat\typeof;
+
+final class Json implements Handler {
+       /**
+        * @var int
+        */
+       private $flags;
+
+       /**
+        * @inheritdoc
+        */
+       function types() : array {
+               return ["json"];
+       }
+
+       /**
+        * @param int $flags json_encode() flags
+        */
+       function __construct(int $flags = 0) {
+               $this->flags = $flags;
+       }
+
+       /**
+        * @inheritdoc
+        */
+       function encode($data): Body {
+               if (is_scalar($data)) {
+                       $json = $data;
+               } else {
+                       $json = json_encode($data, $this->flags);
+               }
+
+               if (false === $json) {
+                       throw new InvalidArgumentException(
+                               "JSON encoding failed for argument ".typeof($data).
+                               " \$data; ".json_last_error_msg());
+               }
+               return (new Body)->append($json);
+       }
+
+       /**
+        * @inheritdoc
+        */
+       function decode(Body $body) {
+               $data = json_decode($body);
+               if (!isset($data) && json_last_error()) {
+                       throw new UnexpectedValueException("Could not decode JSON: ".
+                               json_last_error_msg());
+               }
+               return $data;
+       }
+}