(C) Create GMail Draft

Demonstrates how to create a new GMail draft email.

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#include <C_CkEmail.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>
#include <C_CkHttp.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmail email;
    HCkStringBuilder sbMime;
    HCkJsonObject json;
    HCkHttp http;
    const char *url;
    HCkHttpResponse resp;

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

    // Use the Chilkat Email API to create or load an email.
    email = CkEmail_Create();
    CkEmail_putSubject(email,"This is a test GMail email created using Chilkat.");
    CkEmail_putCharset(email,"utf-8");
    CkEmail_AddPlainTextAlternativeBody(email,"This is a test");
    CkEmail_AddHtmlAlternativeBody(email,"<html><body><p>This is a <b>test</b></body></html>");

    // We'll need to get the full MIME of the email encoded to a base64url string.
    sbMime = CkStringBuilder_Create();
    CkEmail_GetMimeSb(email,sbMime);
    CkStringBuilder_Encode(sbMime,"base64url","utf-8");

    // The body of the HTTP request will be JSON..
    json = CkJsonObject_Create();
    CkJsonObject_UpdateSb(json,"message.raw",sbMime);

    // Upload the email to GMail as a draft.
    http = CkHttp_Create();
    CkHttp_putAuthToken(http,"GMAIL-ACCESS-TOKEN");

    url = "https://www.googleapis.com/gmail/v1/users/me/drafts";
    resp = CkHttp_PostJson3(http,url,"application/json",json);
    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkEmail_Dispose(email);
        CkStringBuilder_Dispose(sbMime);
        CkJsonObject_Dispose(json);
        CkHttp_Dispose(http);
        return;
    }

    // A status code of 200 indicates success.
    printf("Response status code: %d\n",CkHttpResponse_getStatusCode(resp));
    printf("Response body:\n");
    printf("%s\n",CkHttpResponse_bodyStr(resp));
    CkHttpResponse_Dispose(resp);

    // The response body contains JSON.
    // Use the online tool at Generate JSON Parsing Code
    // to generate JSON parsing code.

    // A sample successful JSON response:

    // {
    //  "id": "r-2607584557788895307",
    //  "message": {
    //   "id": "166f09932c662e93",
    //   "threadId": "166f09932c662e93",
    //   "labelIds": [
    //    "DRAFT"
    //   ]
    //  }
    // }


    CkEmail_Dispose(email);
    CkStringBuilder_Dispose(sbMime);
    CkJsonObject_Dispose(json);
    CkHttp_Dispose(http);

    }