//
//  EQNUserDefaultsCommand.swift
//  Earthquake Network
//
//  Created by Busi Andrea on 26/09/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

import Foundation
import CoreLocation


public class EQNUserDefaultsCommand: EQNCommandProtocol {
    
    // MARK: - Public
    
    func execute() {
        print("EQNUserDefaultsCommand: start execute")
        
        applyDefaultSettings()
        saveMissingValues()
        
        migrationV5_3()
    }
    
    // MARK: - Private
    
    private func applyDefaultSettings() {
        
        // seismic card settings
        if UserDefaults.standard.array(forKey: EQNUserDefaultKeySesmicInformations) == nil {
            let informations: [SeismicNetworkTableViewCell.InformationType] = [.buttons, .distance, .coordinate, .population]
            UserDefaults.standard.set(informations.map { $0.rawValue }, forKey: EQNUserDefaultKeySesmicInformations)
        }
    }
    
    private func saveMissingValues() {
        // `raggio sismi forti` was not saved before v2.3
        if UserDefaults.standard.object(forKey: UserDefaults.AllertaSismicaRaggioSismiForti) == nil {
            UserDefaults.standard.set("600", forKey: UserDefaults.AllertaSismicaRaggioSismiForti)
        }
    }
    
    private func migrationV5_3() {
        let migrationPerformed = UserDefaults.standard.bool(forKey: EQNUserDefaultMigrationV5_3)
        if migrationPerformed {
            print("[EQNUserDefaultsCommand] Migration v5.3 already performed")
            return
        }
        
        // l'ultima posizione era salvata come array, la trasformiamo in valore singolo
        let lastLocations = EQNUtility.loadArray(of: CLLocation.self, fromUserDefaultsForKey: EQNUserDefaultLastLocation) as? [CLLocation]
        if let lastLocation = lastLocations?.last {
            UserDefaults.standard.removeObject(forKey: EQNUserDefaultLastLocation)
            EQNUserData.shared.saveLastLocation(lastLocation)
        }
        
        // resettiamo il Firebase token in modo da ri-eseguire la procedura di registrazione corretta
        EQNUserData.shared.saveFirebaseToken(nil)
        
        UserDefaults.standard.set(true, forKey: EQNUserDefaultMigrationV5_3)
    }
}