(Unicode C++) hotelbeds.com REST API Authentication

Demonstrates how to calculate the X-Signature header and add to requests sent to api.test.hotelbeds.com.

For more information, see https://developer.hotelbeds.com/documentation/getting-started/

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#include <CkDateTimeW.h>
#include <CkStringBuilderW.h>
#include <CkCrypt2W.h>
#include <CkHttpW.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example duplicates the following CURL statement provided in the hotelbeds.com "Getting Started"
    // developer documentation:

    // #!/bin/bash 
    // apiKey="yourApiKey"
    // secret="yourSecret"
    // curl -i \
    //   -X GET \
    //   -H 'Accept:application/json' \
    //   -H 'Api-key:'$apiKey'' \
    //   -H 'X-Signature:'$(echo -n ${apiKey}${secret}$(date +%s)|sha256sum|awk '{ print $1}')'' \
    //   https://api.test.hotelbeds.com/hotel-api/1.0/status

    bool success;

    // The "date + %s" command emits a UNIX date/time number such as 1605548842
    // We need to concatenate the apiKey, secret, and current date/time in UNIX (numeric) time format.
    CkDateTimeW dt;
    dt.SetFromCurrentSystemTime();
    // Get the UNIX time string in the GMT timezone.
    bool bLocalTime = false;
    const wchar_t *unixTimeStr = dt.getAsUnixTimeStr(bLocalTime);
    wprintf(L"%s\n",unixTimeStr);

    // Use your own API key and secret.  (These are not valid values)
    const wchar_t *apiKey = L"227b20a2cb705e45f3b0a0944672dc07";
    const wchar_t *secret = L"54dc7ba9e2";

    CkStringBuilderW sb;
    sb.Append(apiKey);
    sb.Append(secret);
    sb.Append(unixTimeStr);

    CkCrypt2W crypt;
    crypt.put_HashAlgorithm(L"sha256");
    crypt.put_EncodingMode(L"hexlower");
    const wchar_t *signature = crypt.hashStringENC(sb.getAsString());

    wprintf(L"%s\n",signature);

    CkHttpW http;

    http.SetRequestHeader(L"Accept",L"application/json");
    http.SetRequestHeader(L"Api-key",apiKey);
    http.SetRequestHeader(L"X-Signature",signature);

    const wchar_t *jsonResponse = http.quickGetStr(L"https://api.test.hotelbeds.com/hotel-api/1.0/status");
    wprintf(L"%s\n",jsonResponse);
    wprintf(L"%d\n",http.get_LastStatus());

    // Sample output:  

    // 1605549542
    // 2146aefb36e7331b3b29aafd7638398ca22e689573224f1a71274d60bd201ec2
    // {"auditData":{"timestamp":"2020-11-16 18:59:02.430"},"status":"OK"}
    // 200
    }