1YsjzgWB

1use GuzzleHttp\Exception\GuzzleException;
2use GuzzleHttp\Client;
3use Carbon\Carbon;
4use DateTime;
5use Exception;
6
7public static function hitAPI($phoneNumber)
8{
9    $clientId 	= env('CLIENT_ID');
10    $secretKey 	= env('SECRET_KEY);
11    $apiUrl		= env('API_URL');
12    $mediaType  = "VOI"; 
13
14    $timestamp = Carbon::now()->format(DateTime::ISO8601);
15
16    $queryString 	= 'timestamp=' . $timestamp . '&clientId=' . $clientId . '&appType=' . $appType .
17    '&mediaType=' . $mediaType . '&phoneNumber'= . $phoneNumber;
18
19    $queryString = self::generateKokattoAPISignedRequest($queryString, $secretKey);
20
21    $client = new Client();
22
23    $response = $client->request('GET', $apiUrl . '/v2/otpm/create?' . $queryString);
24
25    return json_decode($response->getBody(), TRUE);
26}
27
28private static function generateKokattoAPISignedRequest($queryString, $secretKey)
29{
30
31    //construct query string into map
32    parse_str($queryString, $queryStringMap);
33
34    //sort map by key
35    ksort($queryStringMap);
36
37    //construct map into query string
38    $query = http_build_query($queryStringMap);
39
40    //md5 hash query string
41    $queryMd5 = md5($query);
42
43    //generate hmac hash with sha256 method
44    $queryHmacSha256 = hash_hmac('sha256', $queryMd5, $secretKey);
45
46    //url encode hmac hash
47    $signatureEncoded = urlencode($queryHmacSha256);
48
49    //append the signature in query parameters
50    $queryEncoded = $queryString . "&signature=" . $signatureEncoded;
51
52    return $queryEncoded;
53
54}
55
56