Created service to resolve IP locations

module/Common/src/Exception/WrongIpException.php

@@ -0,0 +1,10 @@
+<?php
+namespace Shlinkio\Shlink\Common\Exception;
+
+class WrongIpException extends RuntimeException
+{
+    public static function fromIpAddress($ipAddress, \Exception $prev = null)
+    {
+        return new self(sprintf('Provided IP "%s" is invalid', $ipAddress), 0, $prev);
+    }
+}

module/Common/src/Service/IpLocationResolver.php

@@ -0,0 +1,42 @@
+<?php
+namespace Shlinkio\Shlink\Common\Service;
+
+use Acelaya\ZsmAnnotatedServices\Annotation\Inject;
+use GuzzleHttp\Client;
+use GuzzleHttp\Exception\GuzzleException;
+use Shlinkio\Shlink\Common\Exception\WrongIpException;
+
+class IpLocationResolver implements IpLocationResolverInterface
+{
+    const SERVICE_PATTERN = 'http://freegeoip.net/json/%s';
+
+    /**
+     * @var Client
+     */
+    private $httpClient;
+
+    /**
+     * IpLocationResolver constructor.
+     * @param Client $httpClient
+     *
+     * @Inject({"httpClient"})
+     */
+    public function __construct(Client $httpClient)
+    {
+        $this->httpClient = $httpClient;
+    }
+
+    /**
+     * @param $ipAddress
+     * @return array
+     */
+    public function resolveIpLocation($ipAddress)
+    {
+        try {
+            $response = $this->httpClient->get(sprintf(self::SERVICE_PATTERN, $ipAddress));
+            return json_decode($response->getBody(), true);
+        } catch (GuzzleException $e) {
+            throw WrongIpException::fromIpAddress($ipAddress, $e);
+        }
+    }
+}

module/Common/src/Service/IpLocationResolverInterface.php

@@ -0,0 +1,11 @@
+<?php
+namespace Shlinkio\Shlink\Common\Service;
+
+interface IpLocationResolverInterface
+{
+    /**
+     * @param $ipAddress
+     * @return array
+     */
+    public function resolveIpLocation($ipAddress);
+}