(Unicode C) WaTrend Send WhatsApp Text

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Send a WhatsApp text.

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

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkHttpRequestW req;
    HCkStringBuilderW sbUrl;
    const wchar_t *responseBodyStr;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    int respStatusCode;
    HCkJsonObjectW jResp;
    const wchar_t *status;

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

    http = CkHttpW_Create();

    // Use your actual access token instead of 555555555555555555555555555555
    req = CkHttpRequestW_Create();
    CkHttpRequestW_AddParam(req,L"number",L"84933313xxx");
    CkHttpRequestW_AddParam(req,L"type",L"text");
    CkHttpRequestW_AddParam(req,L"message",L"This is a test message");
    CkHttpRequestW_AddParam(req,L"instance_id",L"609ACF283XXXX");
    CkHttpRequestW_AddParam(req,L"access_token",L"555555555555555555555555555555");

    // Note: The WaTrend online documentation indicate a POST should be used.
    // However, it seems you might actually need to send a GET request.
    // It is unclear.  
    // If a GET is neeed, you would just send to the URL w/ query params like this:
    sbUrl = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sbUrl,L"https://app.watrend.com/api/send.php?");
    CkStringBuilderW_Append(sbUrl,CkHttpRequestW_getUrlEncodedParams(req));
    responseBodyStr = CkHttpW_quickGetStr(http,CkStringBuilderW_getAsString(sbUrl));
    // The responseBodyStr contains the JSON response from the server..

    // If a POST is needed, then it is sent like this:
    resp = CkHttpW_PostUrlEncoded(http,L"https://app.watrend.com/api/send.php",req);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkStringBuilderW_Dispose(sbUrl);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);

    respStatusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",CkHttpResponseW_header(resp));
        wprintf(L"Failed.\n");
        CkHttpResponseW_Dispose(resp);
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkStringBuilderW_Dispose(sbUrl);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

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

    // Both success and failed responses use 200 status code.

    // A success response contains this JSON in the response body:
    // {"status":"success", ... }

    // A failed response will contain something like this:
    // {"status":"error","message":"License Invalidated"}

    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);

    status = CkJsonObjectW_stringOf(jResp,L"status");
    wprintf(L"status: %s\n",status);

    CkHttpResponseW_Dispose(resp);


    CkHttpW_Dispose(http);
    CkHttpRequestW_Dispose(req);
    CkStringBuilderW_Dispose(sbUrl);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);

    }