SwiftUI-SmartReply-MLKit.swift

import SwiftUI
import FirebaseMLNLSmartReply

struct ContentView: View {
    
    @State var name: String = ""
    @State var smartReply: String = ""

    var body: some View {
        
        VStack(alignment: .center, spacing: 20){
            TextField("Enter some text", text: $name)
                .font(.system(size: 20))
                .multilineTextAlignment(.center)
            
            Text(smartReply)

            Button(action: composeSmartReply, label: {
                Text("Smart Reply").foregroundColor(.blue)
            })
        }
    }
    
    func composeSmartReply(){        
        var conversation: [TextMessage] = []
        
        let message = TextMessage(
            text: name,
            timestamp: Date().timeIntervalSince1970,
            userID: "userId",
            isLocalUser: false)
        conversation.append(message)
        
        let naturalLanguage = NaturalLanguage.naturalLanguage()
        naturalLanguage.smartReply().suggestReplies(for: conversation) { result, error in
            guard error == nil, let result = result else {
                print("error \(error?.localizedDescription ?? "")")
                return
            }
            if (result.status == .notSupportedLanguage) {
                self.smartReply = "Language Not Supported."
            } else if (result.status == .success) {
                
                self.smartReply = result.suggestions[0].text
            }
            else if result.status == .noReply{
                self.smartReply = "Offensive text. No Reply"
            }
        }
    }
}