(Go) IBM Cloud - Text to Speech - Synthesize Audio (POST)

Synthesizes text to audio that is spoken in the specified voice. Uses a POST which allows for more text to be synthesized.

Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio

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    success := false

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

    http := Http_Ref.html">chilkat.NewHttp()

    http.SetLogin("apikey")
    http.SetPassword("my_apikey")
    http.SetBasicAuth(true)

    // Send the following request:

    // curl -X POST -u "apikey:{apikey}" 
    //    --header "Content-Type: application/json" 
    //    --header "Accept: audio/wav" 
    //    --data "{\"text\":\"When life gives you lemons, order the lobster tail.\"}" 
    //    --output lobster.wav "{url}/v1/synthesize?voice=en-US_AllisonV3Voice"

    // Use your base URL shown in the credentials web page (below your apikey)
    myBaseUrl := "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8"

    sbUrl := StringBuilder_Ref.html">chilkat.NewStringBuilder()
    sbUrl.Append(myBaseUrl)
    sbUrl.Append("/v1/synthesize?voice=en-US_AllisonV3Voice")

    http.SetAccept("audio/wav")

    json := JsonObject_Ref.html">chilkat.NewJsonObject()
    json.UpdateString("text","When life gives you lemons, order the lobster tail.")

    url := sbUrl.GetAsString()
    resp := HttpResponse_Ref.html">chilkat.NewHttpResponse()
    success = http.HttpJson("POST",*url,json,"application/json",resp)
    if success == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        sbUrl.DisposeStringBuilder()
        json.DisposeJsonObject()
        resp.DisposeHttpResponse()
        return
    }

    respStatusCode := resp.StatusCode()
    fmt.Println("response status code = ", respStatusCode)

    if respStatusCode == 200 {
        success = resp.SaveBodyBinary("qa_output/lobster.wav")
        fmt.Println("Success!")
    } else {
        fmt.Println(resp.BodyStr())
    }


    http.DisposeHttp()
    sbUrl.DisposeStringBuilder()
    json.DisposeJsonObject()
    resp.DisposeHttpResponse()