(Go) 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.

For more information, see https://developers.facebook.com/docs/whatsapp/api/messages/media

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    http := chilkat.NewHttp()
    var success bool

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

    // Adds the "Authorization: Bearer your-auth-token" header.
    http.SetAuthToken("your-auth-token")

    resp := http.PostJson3("https://example.com/v1/messages","application/json",json)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        json.DisposeJsonObject()
        return
    }

    sbResponseBody := chilkat.NewStringBuilder()
    resp.GetBodySb(sbResponseBody)
    jResp := chilkat.NewJsonObject()
    jResp.LoadSb(sbResponseBody)
    jResp.SetEmitCompact(false)

    fmt.Println("Response Body:")
    fmt.Println(*jResp.Emit())

    respStatusCode := resp.StatusCode()
    fmt.Println("Response Status Code = ", respStatusCode)
    if respStatusCode >= 400 {
        fmt.Println("Response Header:")
        fmt.Println(resp.Header())
        fmt.Println("Failed.")
        resp.DisposeHttpResponse()
        http.DisposeHttp()
        json.DisposeJsonObject()
        sbResponseBody.DisposeStringBuilder()
        jResp.DisposeJsonObject()
        return
    }

    resp.DisposeHttpResponse()

    // 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

    var id *string = new(string)

    i := 0
    count_i := jResp.SizeOfArray("messages")
    for i < count_i {
        jResp.SetI(i)
        id = jResp.StringOf("messages[i].id")
        i = i + 1
    }


    http.DisposeHttp()
    json.DisposeJsonObject()
    sbResponseBody.DisposeStringBuilder()
    jResp.DisposeJsonObject()