//TTS func
    func speakWord(speakText: String) {
        let string = speakText
        let utterance = AVSpeechUtterance(string: string)
        utterance.voice = AVSpeechSynthesisVoice(language: "es-ES")

        let synth = AVSpeechSynthesizer()
        synth.speak(utterance)
    }



// ============ API translation ============
    func getTranslation() {

        let appId = "57223611"
        let appKey = "efb6a7d183a316f8e5552e779c7358b9"
        let language = "en"
        let target_lang = "es"
        let word = "student"
        let word_id = word.lowercased() //word id is case sensitive and lowercase is required
        let url = URL(string: "https://od-api.oxforddictionaries.com:443/api/v1/entries/\(language)/\(word_id)/translations=\(target_lang)")!
        var request = URLRequest(url: url)
        request.addValue("application/json", forHTTPHeaderField: "Accept")
        request.addValue(appId, forHTTPHeaderField: "app_id")
        request.addValue(appKey, forHTTPHeaderField: "app_key")

        let session = URLSession.shared
        _ = session.dataTask(with: request, completionHandler: { data, response, error in
        if let response = response,
        let data = data,
        let jsonData = try? JSONSerialization.jsonObject(with: data, options: .mutableContainers) {
//        print(response)
//        print(jsonData)
            print("getting data...")
            print("*********************")

            let jsonData = jsonData as! NSDictionary

            if let resultsArray = jsonData["results"] as? [Any] {
                //                                        print(resultsArray)
//                                    print(resultsArray[0])
                if let firstResultsArray = resultsArray[0] as? NSDictionary{
                    //                        print(firstResultsArray)
                    if let lexicalEntries = firstResultsArray["lexicalEntries"] as? [Any] {
                        //                            print(lexicalEntries)
                        if let lexicalArrays = lexicalEntries as? [Any] {
                            //                                print(lexicalArrays)
                            if let lexicalArray = lexicalArrays[0] as? NSDictionary {
                                //                                    print(lexicalArray)
                                if let entries = lexicalArray["entries"] as? [Any] {
                                    //                                        print(entries)
                                    if let entry = entries[0] as? NSDictionary {
                                        //                                            print(entry)
                                        if let senses = entry["senses"] as? [Any] {
                                            //                                                print(senses)
                                            if let sense = senses[0] as? NSDictionary {
//                                                                                                    print(sense)
//                                                print("-------end------")
                                                if let trans = sense["translations"] as? [Any] {
//                                                    print(trans)
                                                    if let arr = trans[0] as? NSDictionary {
//                                                        print(arr)
//                                                        print("---")
                                                        if let translatedText = arr["text"] as? String {
                                                            print(translatedText)
                                                            self.speakWord(speakText: "Esta palabra en espanol significa ," + translatedText)

                                                        }
                                                    }
                                                }
                                                }
                                            }
                                    }
                                    }
                                }
                            }
                        }
                    }
                }
        } else {
        print(error)
        print(NSString.init(data: data!, encoding: String.Encoding.utf8.rawValue))
            print("====== ERROR ======")
            print("sorry, Oxford API doesn't have a translation for that word")
        }
        }).resume()
    }