//
//  ChatViewModel.swift
//  Chat
//
//  Created by Sergey Tarasov on 10.08.2022.
//

import Foundation
import XMPPFramework
import XMPPFrameworkSwift

class ChatViewModelExample {
    static let messages: [String] = ["Display a short text message, called an alert, that draws attention to something new in your app.", "Play a notification sound.", "Set a badge number on the app’s icon to let the user know there are new items.", "Provide actions the user can take without opening the app.", "Show a media attachment.", "Be silent, allowing the app to perform a task in the background.", "No", "Group notifications into threads.", "Yes", "Edit or remove delivered notifications.", "Run code to change your notification before displaying it.", "Display a custom, interactive UI for your notification.", "And probably more.", "Yes", "Edit or remove delivered notifications.", "Run code to change your notification before displaying it.", "Display a custom, interactive UI for your notification.", "And probably more."]
}

class ChatViewModel: NSObject, ObservableObject {
    let manager: RoomManager

    @Published var messageText: String = ""
    @Published var messages: [XMPPMessage] = []

    init(with jidString: String) {
        self.manager = RoomManager(with: jidString)
        super.init()
    }

    func fetchMessages() {
        self.manager.fetchMessages()
        DispatchQueue.main.asyncAfter(deadline: .now() + 1) { [weak self] in
            self?.messages = self?.manager.messages ?? ChatViewModelExample.messages.map { text in
                let message = XMPPMessage()
                message.addBody(text)
                return message
            }
        }
    }

    func sendMessage() {
        if !self.messageText.isEmpty {
            self.manager.room.sendMessage(withBody: self.messageText)
        }
    }
}

extension ChatViewModel: XMPPRoomDelegate {
    func xmppRoom(_ sender: XMPPRoom, didReceive message: XMPPMessage, fromOccupant occupantJID: XMPPJID) {
        print(message.debugDescription)
    }
}