RESTful API Calls to Snowboy API with Swift 3 - swift

Question

I'm a mobile app noobie currently trying to send 3 wav voice samples with Swift3 to the Snowboy API server.
Per their documentation Link Here, the request needs to have the following elements:
Endpoint: https://snowboy.kitt.ai/api/v1/train/
Type: POST
Content-Type: application/json
Required Parameter - token: Secret user token
Required Parameter - name: name of the recorded hotword that's mentioned in the voice samples
Required Parameter - voice_samples: A list of 3 voice samples in .wav format encoded as base64 strings
An example of the json they're expecting would look like this:
data = {
"name": "nameOfSample",
"language": "en",
"token": "token",
"voice_samples": [
{"wave": voicesample1asBase64String},
{"wave": voicesample2asBase64String},
{"wave": voicesample3asBase64String}
]
}
With the following code, I get a 400 status code. Meaning that it recognized the token parameter and authenticated my request but the latter is somehow malformatted:
lazy var session: URLSession = URLSession(configuration: self.conf)
let url: URL
init(url: URL){
self.url = url
}
func sendDataToURL (completion: #escaping JSONDictionaryHandler)
{
var request = URLRequest(url: self.url)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
let path1 = Bundle.main.path(forResource: "voicesample1", ofType: "wav")!
let path2 = Bundle.main.path(forResource: "voicesample2", ofType: "wav")!
let path3 = Bundle.main.path(forResource: "voicesample3", ofType: "wav")!
let paths = [path1, path2, path3]
let audioFileStrings = paths.map { (path: String) -> [String:String] in
let audioURL = URL(fileURLWithPath: path)
let filename = audioURL.lastPathComponent
if let base64String = try? Data(contentsOf: audioURL).base64EncodedString(){
//print(base64String)
return ["wave":base64String]
}else{return ["":""]}
}
let parameters = ["token": "XXXXXXXXXXXXXXX",
"name": "nameOfSample",
"language": "en",
"voice_samples": audioFileStrings
] as [String : Any]
guard let httpBody = try? JSONSerialization.data(withJSONObject: parameters, options: []) else {return}
print("sending\(parameters)")
request.httpBody = httpBody
let uploadTask = session.dataTask(with: request) { (data, response, error) in
if error == nil {
if let httpResponse = response as? HTTPURLResponse{
print(httpResponse)
switch httpResponse.statusCode{
case 200: //successful
if let receiveddata = data{
print("YAAAY! DATA! \(receiveddata)")
do{
let json = try JSONSerialization.jsonObject(with: receiveddata, options: [])
print(json)
}
catch{
print(error)
}
}
default:
print("Bad HTTP response code: \(httpResponse.statusCode)")
}
}
if let receivedData = data{
}
}
else {
print("Error \(error?.localizedDescription)")
}
}
uploadTask.resume()
}
I think it's the voice_samples list that isn't well inserted in the son. Does anybody know how I can construct the request so the Snowboy server accepts it? Thanks!

Answer 1

You need a complete list of parameters. Add these:
age_group
gender
microphone
This these parameters i got 201 error. But i used bad wav files.
let parameters = ["token": "XXXXXXXX",
"name": "nameOfSample123123123",
"language": "en",
"voice_samples": audioFileStrings,
"age_group": "0_9",
"gender": "M",
"microphone": "test"