FizzBuzz REST Api on PHP

Author: oksana-yudenko

Diff for: .idea/vcs.xml

@@ -0,0 +1,128 @@
+<?php
+
+/** FizzBuzz REST api allowing GET requests in the following format: domain.com/api/fizzbuzz/100
+ *  where 100 could be any number
+ *  To use this api just require the class and call:
+ *  $api = new Api();
+ *  echo $api->run();
+ *  Author: @absolutic
+ */
+class FizzBuzzApi
+{
+    /**
+     * @var string
+     */
+    public $apiName = 'api';
+
+    /**
+     * @var array
+     */
+    public $actions = [
+        'fizzbuzz' => 'fizzBuzzAction'
+    ];
+
+    /**
+     * @var string
+     */
+    protected $method = 'GET';
+
+    /**
+     * @var array
+     */
+    public $requestUri = [];
+
+    /**
+     * Api constructor.
+     */
+    public function __construct()
+    {
+        // Set headers to allow client requests
+        header("Access-Control-Allow-Orgin: *");
+        header("Access-Control-Allow-Methods: GET");
+        header("Content-Type: application/json");
+
+        // Read Url and params to properties
+        $this->requestUri = explode('/', trim($_SERVER['REQUEST_URI'],'/'));
+
+        // If request method is not GET return error
+        if ($this->method !== $_SERVER['REQUEST_METHOD']) {
+            return $this->response('Invalid request method');
+        }
+    }
+
+    /**
+     * @return mixed
+     */
+    public function run()
+    {
+        if (array_shift($this->requestUri) !== $this->apiName) {
+            throw new RuntimeException('API not found', 404);
+        }
+
+        $uriAction = array_shift($this->requestUri);
+        if (!in_array($uriAction, array_keys($this->actions))) {
+            throw new RuntimeException('Action not found', 404);
+        } else {
+            $action = $this->actions[$uriAction];
+        }
+
+        // Check and run api method
+        if (method_exists($this, $action)) {
+            return $this->{$action}();
+        } else {
+            throw new RuntimeException('Invalid Method', 405);
+        }
+    }
+
+    /**
+     *
+     */
+    public function fizzBuzzAction()
+    {
+        $number = array_shift($this->requestUri);
+        $result = [];
+        foreach (range(1, $number) as $i) {
+            $result[] = $this->fizzbuzz($i, 15, 'FizzBuzz')
+                ?: $this->fizzbuzz($i, 5, 'Fizz')
+                    ?: $this->fizzbuzz($i, 3, 'Buzz') ?: $i;
+        }
+        return $this->response($result, 200);
+    }
+
+    /**
+     * @param $val
+     * @param $num
+     * @param $str
+     * @return bool
+     */
+    protected function fizzBuzz($val, $num, $str)
+    {
+        return $val % $num == 0 ? $str : false;
+    }
+
+    /**
+     * @param $data
+     * @param int $status
+     * @return false|string
+     */
+    protected function response($data, $status = 500)
+    {
+        header("HTTP/1.1 " . $status . " " . $this->requestStatus($status));
+        return json_encode($data);
+    }
+
+    /**
+     * @param $code
+     * @return mixed
+     */
+    private function requestStatus($code)
+    {
+        $status = array(
+            200 => 'OK',
+            404 => 'Not Found',
+            405 => 'Method Not Allowed',
+            500 => 'Internal Server Error',
+        );
+        return $status[$code]?: $status[500];
+    }
+}