Unicode C

WhatsApp - Send a Linked Media Message

Demonstrates how to send a media message where the media content is a link to an external URL. This example demonstrates sending an image (JPG) media message. Unicode C

#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    HCkJsonObjectW json;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    HCkJsonObjectW jResp;
    int respStatusCode;
    const wchar_t *id;
    int i;
    int count_i;

    success = FALSE;

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

    http = CkHttpW_Create();

    //  Implements the following CURL command:

    //  curl -X POST https://example.com/v1/messages \
    //    -H "Authorization: Bearer your-auth-token" \
    //    -d '
    //  {
    //      "recipient_type": "individual-or-group",
    //      "to": "whatsapp-id-or-group-id",
    //      "type": "image",
    //      "image": {
    //        "link": "http(s)://the-url",
    //        "provider": {
    //          "name" : "provider-name"
    //        },
    //      "caption": "your-image-caption"
    //    }
    //  }'

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    //  Use this online tool to generate code from sample JSON:
    //  Generate Code to Create JSON

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

    //  {
    //    "recipient_type": "individual-or-group",
    //    "to": "whatsapp-id-or-group-id",
    //    "type": "image",
    //    "image": {
    //      "link": "http(s)://the-url",
    //      "provider": {
    //        "name": "provider-name"
    //      },
    //      "caption": "your-image-caption"
    //    }
    //  }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(json,L"recipient_type",L"individual-or-group");
    CkJsonObjectW_UpdateString(json,L"to",L"whatsapp-id-or-group-id");
    CkJsonObjectW_UpdateString(json,L"type",L"image");
    CkJsonObjectW_UpdateString(json,L"image.link",L"http(s)://the-url");
    CkJsonObjectW_UpdateString(json,L"image.provider.name",L"provider-name");
    CkJsonObjectW_UpdateString(json,L"image.caption",L"your-image-caption");

    //  Adds the "Authorization: Bearer your-auth-token" header.
    CkHttpW_putAuthToken(http,L"your-auth-token");

    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpJson(http,L"POST",L"https://example.com/v1/messages",json,L"application/json",resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);
    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);
    CkJsonObjectW_putEmitCompact(jResp,FALSE);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",CkJsonObjectW_emit(jResp));

    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");
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkHttpResponseW_Dispose(resp);
        CkStringBuilderW_Dispose(sbResponseBody);
        CkJsonObjectW_Dispose(jResp);
        return;
    }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "messages": [
    //      {
    //        "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
    //      }
    //    ]
    //  }

    //  Sample code for parsing the JSON response...
    //  Use the following online tool to generate parsing code from sample JSON:
    //  Generate Parsing Code from JSON

    //  Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    //  See this example explaining how this memory should be used: const char * functions.

    i = 0;
    count_i = CkJsonObjectW_SizeOfArray(jResp,L"messages");
    while (i < count_i) {
        CkJsonObjectW_putI(jResp,i);
        id = CkJsonObjectW_stringOf(jResp,L"messages[i].id");
        i = i + 1;
    }



    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(json);
    CkHttpResponseW_Dispose(resp);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);

    }