(Unicode C) WhatsApp Cloud API Send Message

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Demonstrates how to send a message using the WhatsApp Cloud API (Business App)

Chilkat C/C++ Library Downloads
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#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkJsonObjectW json;
    HCkHttpResponseW resp;

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

    http = CkHttpW_Create();

    // The following JSON is sent in the request body.

    // {
    //   "messaging_product": "whatsapp",
    //   "to": "16302581871",
    //   "type": "template",
    //   "template": {
    //     "name": "hello_world",
    //     "language": {
    //       "code": "en_US"
    //     }
    //   }
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(json,L"messaging_product",L"whatsapp");
    CkJsonObjectW_UpdateString(json,L"to",L"15555555555");
    CkJsonObjectW_UpdateString(json,L"type",L"template");
    CkJsonObjectW_UpdateString(json,L"template.name",L"hello_world");
    CkJsonObjectW_UpdateString(json,L"template.language.code",L"en_US");

    CkHttpW_putAuthToken(http,L"EAANrS5....yFB9Ma");
    CkHttpW_SetRequestHeader(http,L"Content-Type",L"application/json");

    resp = CkHttpW_PostJson3(http,L"https://graph.facebook.com/v18.0/111111111111111/messages",L"application/json",json);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        return;
    }

    wprintf(L"%d\n",CkHttpResponseW_getStatusCode(resp));
    wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp));
    CkHttpResponseW_Dispose(resp);

    // Here's a screenshot of our WhatsApp test app.

    // 


    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(json);

    }