PlayPersonalVoice.swift

//
//  ContentView.swift
//  PlayAVFoundation
//
//  Created by Igor Dvorkin on 10/22/23.
//

import SwiftUI
import AVFoundation
import Swifter
import Foundation


class PersonalSynth{
    var invocation=0
    let synth = AVSpeechSynthesizer()
    var personalVoice = AVSpeechSynthesisVoice()
    public func speak(text:String){
        print("\(invocation)> \(text)")
        let utterance = AVSpeechUtterance(string: text)
        utterance.voice = personalVoice
        synth.speak(utterance)
        print("\(invocation)> done")
        invocation += 1
    }

    init()
    {
        AVSpeechSynthesizer.requestPersonalVoiceAuthorization(completionHandler: { (result) in
            print("Complete \(result)")
        })
        for voice in AVSpeechSynthesisVoice.speechVoices()
        {
            if voice.identifier.contains("personalvoice")
            {
                print(voice.identifier)
                personalVoice = voice
                return
            }
        }
        print ("Personal Voice not Found")
    }
}

let synth = PersonalSynth()

class TalkingWebResponder{
    init()
    {
        let port:in_port_t = 9007
        let server = HttpServer()
        server["/speak"] = { request in
            print ("R \(request)")
            print ("R.QP \(request.queryParams)")
            print ("R.P \(request.params)")
            
            // Do URL decoding, including '+' to ' '
            let text_to_speak = String(request.queryParams.first?.1.replacingOccurrences(of:"+",with:" ").removingPercentEncoding ?? "")
            synth.speak(text:text_to_speak)
            return HttpResponse.ok(.text(text_to_speak))
        }
        server.listenAddressIPv4="127.0.0.1" // Only listen on locahost
        do {
            print ("Starting Server: \(port)")
            try server.start(port, forceIPv4: true)
            print ("Ending Server")
            // without the sleep, the server never runs.
            sleep(1)

        }
        catch
        {
            print("Server Error \(error)")
        }
        
    }
    public func forceAlive()
    {
        print("Force Alive")
    }
}
let webServer = TalkingWebResponder()


struct ContentView: View {
    @State var textInTextBox:String = "Hey, the computer is talking for me"
    var body: some View {
        VStack {
            TextField("Igor in Text Feild", text:$textInTextBox, onEditingChanged: {starting in
                if !starting {
                    speakText()
                }
            })
            .frame(maxWidth: .infinity)
            .font(Font.system(size: 20, design: .default))
            Button("Ugly"){
                speakText()
            }.frame(maxWidth: .infinity)
        }
        .padding()
    }
    func speakText(){
        synth.speak(text:textInTextBox)
    }
    init()
    {
        webServer.forceAlive()
    }
}
#Preview {
    ContentView()
}