//
//  EQNUserData.swift
//  Earthquake Network
//
//  Created by Andrea Busi on 04/11/22.
//  Copyright © 2022 Earthquake Network. All rights reserved.
//

import Foundation
import CoreLocation


@objc class EQNUserData: NSObject {
    
    @objc(sharedData) static let shared = EQNUserData()
    
    
    // MARK: - Public
    
    @objc
    var isFirstStart: Bool {
        firebaseToken == nil
    }
    
    // MARK: - Firebase Token
    
    @objc
    var firebaseToken: String? {
        UserDefaults.standard.object(forKey: UserDefaults.UserDataFirebaseToken) as? String
    }
    
    @objc
    func saveFirebaseToken(_ token: String?) {
        if let token = token {
            UserDefaults.standard.set(token, forKey: UserDefaults.UserDataFirebaseToken)
        } else {
            UserDefaults.standard.removeObject(forKey: UserDefaults.UserDataFirebaseToken)
        }
    }
    
    // MARK: - User id
    
    @objc
    var userId: String? {
        let userId = UserDefaults.standard.object(forKey: UserDefaults.UserDataUserId)
        
        // nel corso delle versioni l'id è stato salvato in diversi modi
        // per evitare problemi, cerchiamo di convertirlo in modi diveri
        if let userId = userId as? String {
            return userId
        } else if let userId = userId as? Int {
            return "\(userId)"
        } else if let userId = userId as? NSNumber {
            return userId.stringValue
        }
        
        return nil
    }
    
    @objc
    func saveUserId(_ userId: String) {
        UserDefaults.standard.set(userId, forKey: UserDefaults.UserDataUserId)
    }
    
    // MARK: - Last location
    
    @objc
    var lastLocation: CLLocation? {
        guard let encodedLocation = UserDefaults.appGroup?.object(forKey: UserDefaults.UserDataLastLocation) as? Data else {
            return nil
        }

        let location = try? NSKeyedUnarchiver.unarchivedObject(ofClass: CLLocation.self, from: encodedLocation)
        return location
    }
    
    @objc
    func saveLastLocation(_ location: CLLocation) {
        guard let encodedLocation = try? NSKeyedArchiver.archivedData(withRootObject: location, requiringSecureCoding: false) else {
            return
        }
        UserDefaults.appGroup?.set(encodedLocation, forKey: UserDefaults.UserDataLastLocation)
    }
    
    // MARK: - Seismic Networks
    
    @objc
    func seismicNetworksSelected() -> [String] {
        if let savedNetworks = UserDefaults.standard.object(forKey: UserDefaults.UserDataSelectedSeismicNetworks) as? [String] {
            return savedNetworks
        }
        return []
    }
    
    func saveSelectedSeismicNetworks(_ networks: [String]) {
        UserDefaults.standard.set(networks, forKey: UserDefaults.UserDataSelectedSeismicNetworks)
    }
    
    // MARK: - Public
    
    @objc
    func removeAllData() {
        UserDefaults.standard.removeObject(forKey: UserDefaults.UserDataFirebaseToken)
        UserDefaults.standard.removeObject(forKey: UserDefaults.UserDataUserId)
        UserDefaults.appGroup?.removeObject(forKey: UserDefaults.UserDataLastLocation)
    }
}