Unicode C++ GMail: Lists the messages in the user's mailbox.

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Lists the messages in the user's mailbox.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/messages/list

#include <CkRestW.h>
#include <CkOAuth2W.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    CkRestW rest;
    bool success;

    //   Provide a previously obtained OAuth2 access token.
    CkOAuth2W oauth2;
    oauth2.put_AccessToken(L"OAUTH2_ACCESS_TOKEN");
    rest.SetAuthOAuth2(oauth2);

    success = rest.Connect(L"www.googleapis.com",443,true,true);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    CkStringBuilderW sbJson;
    success = rest.FullRequestNoBodySb(L"GET",L"/gmail/v1/users/me/messages",sbJson);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"Received error response code: %d\n",rest.get_ResponseStatusCode());
        wprintf(L"Response body:\n");
        wprintf(L"%s\n",sbJson.getAsString());
        return;
    }

    CkJsonObjectW json;
    json.LoadSb(sbJson);

    //  The following code parses the JSON response.
    //  A sample JSON response is shown below the sample code.
    int resultSizeEstimate;
    int i;
    int count_i;
    const wchar_t *id = 0;
    const wchar_t *threadId = 0;

    resultSizeEstimate = json.IntOf(L"resultSizeEstimate");
    i = 0;
    count_i = json.SizeOfArray(L"messages");
    while (i < count_i) {
        json.put_I(i);
        id = json.stringOf(L"messages[i].id");
        threadId = json.stringOf(L"messages[i].threadId");
        i = i + 1;
    }

    wprintf(L"Example Completed.\n");
    }

Sample JSON Response Body

{
  "messages": [
    {
      "id": "15fc237e79da4174",
      "threadId": "15fc237e79da4174"
    },
    {
      "id": "15fc23688c553739",
      "threadId": "15fc23688c553739"
    },
    {
      "id": "15fbd37d3a8f9950",
      "threadId": "15fbd37d3a8f9950"
    },
    {
      "id": "15fb5e49b822ac1d",
      "threadId": "15fb5e49b822ac1d"
    },
    {
      "id": "15fb5e49b7a0739b",
      "threadId": "15fb5e49b7a0739b"
    }
  ],
  "resultSizeEstimate": 5
}