//
//  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")
        
        migrationV5_8()
        migrationFirstAppStat()
        migrationCriticalAlerts()
        migrationV5_9()
        migrationV5_10()
    }
    
    // MARK: - Private
    
    private func migrationV5_8() {
        let migrationPerformed = UserDefaults.standard.bool(forKey: UserDefaults.AppMigrationV5_8)
        if migrationPerformed {
            print("[EQNUserDefaultsCommand] Migration v5.8 already performed")
            return
        }

        // delete old notification settings
        let userDefaults = UserDefaults.standard
        [
            "NOTIFICHE_ATTIVA_RETI_SISMICHE_VICINE", "NOTIFICHE_ATTIVA_RETI_TERREMOTI_FORTI",
            "NOTIFICHE_ATTIVA_RETI_ENERGIA_FORTI", "NOTIFICHE_ATTIVA_RETI_LISTA_ENTI"
        ].forEach { key in
            userDefaults.removeObject(forKey: key)
        }
        
        // delete old filter values
        [
            "EQN_ETA_MASSIMA", "EQN_SISMI_FORTI_ABILITATI", "EQN_SISMI_FORTI",
            "EQN_SISMI_QUALSIASI_MAGNITUDO", "EQN_SISMI_MODIFICA_IMPOSTAZIONI"
        ].forEach { key in
            userDefaults.removeObject(forKey: key)
        }
        
        // delete old "real time alert" settings
        [
            "NOTIFICHE_ALLERA_SISMICA_IMPOSTA_VOLUME", "NOTIFICHE_ALLERA_SISMICA_TESTA_ALLARME",
            "NOTIFICHE_ALLERA_SISMICA_ABILITA_INTERVALLO", "NOTIFICHE_ALLERA_SISMICA_ORA_INIZIO",
            "NOTIFICHE_ALLERA_SISMICA_ORA_INIZIO"
        ].forEach { key in
            userDefaults.removeObject(forKey: key)
        }
        
        userDefaults.set(true, forKey: UserDefaults.AppMigrationV5_8)
    }
    
    private func migrationFirstAppStat() {
        // before v5.8.2, first app start was defined using Firebase Token
        let userDefaults = UserDefaults.standard
        let firstAppStartExecuted = userDefaults.bool(forKey: UserDefaults.FirstAppStartExecuted)
        if firstAppStartExecuted {
            print("[EQNUserDefaultsCommand] First app start already executed")
            return
        }
        
        let firebaseToken = userDefaults.object(forKey: UserDefaults.UserDataFirebaseToken) as? String
        if firebaseToken != nil {
            print("[EQNUserDefaultsCommand] First app start migrated")
            userDefaults.set(true, forKey: UserDefaults.FirstAppStartExecuted)
        }
    }
    
    private func migrationCriticalAlerts() {
        let userDefaults = UserDefaults.standard
        let migrationPerformed = userDefaults.bool(forKey: UserDefaults.AppMigrationV5_8_2)
        if migrationPerformed {
            print("[EQNUserDefaultsCommand] Migration v5.8.2 already performed")
            return
        }

        UNUserNotificationCenter.current().getNotificationSettings { settings in
            if settings.criticalAlertSetting != .enabled {
                print("[EQNUserDefaultsCommand] Critical alerts not enabled, disable settings")
                EQNSettingRealTimeAlert.shared.isCriticalAlertsEnabled = false
                EQNSettingRealTimeAlert.shared.saveUserInfo()
            } else {
                print("[EQNUserDefaultsCommand] Critical alerts enabled, do nothing")
            }
        }
        
        userDefaults.set(true, forKey: UserDefaults.AppMigrationV5_8_2)
    }
    
    private func migrationV5_9() {
        let userDefaults = UserDefaults.standard
        let migrationPerformed = userDefaults.bool(forKey: UserDefaults.AppMigrationV5_9)
        if migrationPerformed {
            print("[EQNUserDefaultsCommand] Migration v5.9 already performed")
            return
        }

        // add new intensity map
        var informations = AppPreferences.shared.seismicNetworksInformations
        if !informations.contains(.intensityMap) {
            informations.append(.intensityMap)
            print("[EQNUserDefaultsCommand] Add intensityMap to seismic informations")
        }
        AppPreferences.shared.seismicNetworksInformations = informations
        
        let cardDisplayType: SeismicNetworksViewController.CardDisplayType = informations.contains(.buttons) ? .full : .small
        AppPreferences.shared.seismicNetworksCardStyle = cardDisplayType
        
        userDefaults.set(true, forKey: UserDefaults.AppMigrationV5_9)
    }
    
    private func migrationV5_10() {
        let userDefaults = UserDefaults.standard
        let migrationPerformed = userDefaults.bool(forKey: UserDefaults.AppMigrationV5_10)
        if migrationPerformed {
            print("[EQNUserDefaultsCommand] Migration v5.10 already performed")
            return
        }
        
        print("[EQNUserDefaultsCommand] Save default value for mildQuakeSoundDisabled")
        EQNSettingRealTimeAlert.shared.isMildQuakeSoundDisabled = true
        EQNSettingRealTimeAlert.shared.saveUserInfo()

        userDefaults.set(true, forKey: UserDefaults.AppMigrationV5_10)
    }
}