git.m6w6.name Git - m6w6/seekat/blob - lib/API/ContentType/Handler/Json.php

   1 <?php
   2
   3 namespace seekat\API\ContentType\Handler;
   4
   5 use http\Message\Body;
   6 use seekat\API\ContentType\Handler;
   7 use seekat\Exception\InvalidArgumentException;
   8 use seekat\Exception\UnexpectedValueException;
   9 use function seekat\typeof;
  10
  11 final class Json implements Handler {
  12         /**
  13          * @var int
  14          */
  15         private $flags;
  16
  17         /**
  18          * @inheritdoc
  19          */
  20         function types() : array {
  21                 return ["json"];
  22         }
  23
  24         /**
  25          * @param int $flags json_encode() flags
  26          */
  27         function __construct(int $flags = 0) {
  28                 $this->flags = $flags;
  29         }
  30
  31         /**
  32          * @inheritdoc
  33          */
  34         function encode($data): Body {
  35                 if (is_scalar($data)) {
  36                         $json = $data;
  37                 } else {
  38                         $json = json_encode($data, $this->flags);
  39                 }
  40
  41                 if (false === $json) {
  42                         throw new InvalidArgumentException(
  43                                 "JSON encoding failed for argument ".typeof($data).
  44                                 " \$data; ".json_last_error_msg());
  45                 }
  46                 return (new Body)->append($json);
  47         }
  48
  49         /**
  50          * @inheritdoc
  51          */
  52         function decode(Body $body) {
  53                 $data = json_decode($body);
  54                 if (!isset($data) && json_last_error()) {
  55                         throw new UnexpectedValueException("Could not decode JSON: ".
  56                                 json_last_error_msg());
  57                 }
  58                 return $data;
  59         }
  60 }