initial checkin

[m6w6/seekat] / lib / Exception / RequestException.php

diff --git a/lib/Exception/RequestException.php b/lib/Exception/RequestException.php
new file mode 100644 (file)
index 0000000..877664e
--- /dev/null
+++ b/lib/Exception/RequestException.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace seekat\Exception;
+
+use seekat\Exception;
+
+use http\Header;
+use http\Client\Response;
+
+class RequestException extends \Exception implements Exception
+{
+       private $errors = [];
+       private $response;
+
+       function __construct(Response $response) {
+               $this->response = $response;
+
+               if (($h = $response->getHeader("Content-Type", Header::class))
+               &&      $h->match("application/json", Header::MATCH_WORD)
+               &&      $failure = json_decode($response->getBody())) {
+                       $message = $failure->message;
+                       if (isset($failure->errors)) {
+                               $this->errors = (array) $failure->errors;
+                       }
+               } else {
+                       $message = trim($response->getBody()->toString());
+               }
+
+               if (!strlen($message)) {
+                       $message = $response->getTransferInfo("error");
+               }
+               if (!strlen($message)) {
+                       $message = $response->getResponseStatus();
+               }
+
+               parent::__construct($message, $response->getResponseCode(), null);
+       }
+
+       function getErrors() : array {
+               return $this->errors;
+       }
+
+       function getErrorsAsString() {
+               static $reasons = [
+                       "missing" => "The resource %1\$s does not exist\n",
+                       "missing_field" => "Missing field %2\$s of resource %1\$s\n",
+                       "invalid" => "Invalid formatting of field %2\$s of resource %1\$s\n",
+                       "already_exists" => "A resource %1\$s with the same value of field %2\$s already exists\n",
+               ];
+
+               if (!$this->errors) {
+                       return $this->response;
+               }
+
+               $errors = "JSON errors:\n";
+               foreach ($this->errors as $error) {
+                       if ($error->code === "custom") {
+                               $errors .= $error->message . "\n";
+                       } else {
+                               $errors .= sprintf($reasons[$error->code], $error->resource, $error->field);
+                       }
+               }
+               return $errors;
+       }
+
+       function __toString() : string {
+               return parent::__toString() . "\n". $this->getErrorsAsString();
+       }
+}