cake_wallet/ios/Runner/AppDelegate.swift

import UIKit
import Flutter
import UnstoppableDomainsResolution

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    lazy var resolution : Resolution? =  {
           return  try? Resolution()
        }()

    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        let controller : FlutterViewController = window?.rootViewController as! FlutterViewController
        let legacyMigrationChannel = FlutterMethodChannel(
            name: "com.cakewallet.cakewallet/legacy_wallet_migration",
            binaryMessenger: controller.binaryMessenger)
        legacyMigrationChannel.setMethodCallHandler({
        let batteryChannel = FlutterMethodChannel(name: "com.cakewallet.cakewallet/legacy_wallet_migration",
                                                  binaryMessenger: controller.binaryMessenger)
        let unstoppableDomainChannel = FlutterMethodChannel(name: "com.cakewallet.cake_wallet/unstoppable-domain", binaryMessenger: controller.binaryMessenger)

        batteryChannel.setMethodCallHandler({
            (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
            
            switch call.method {
            case "decrypt":
                guard let args = call.arguments as? Dictionary<String, Any>,
                      let data = args["bytes"] as? FlutterStandardTypedData,
                      let key = args["key"] as? String,
                      let salt = args["salt"] as? String else {
                    result(nil)
                    return
                }
                
                let content = decrypt(data: data.data, key: key, salt: salt)
                result(content)
            case "read_user_defaults":
                guard let args = call.arguments as? Dictionary<String, Any>,
                      let key = args["key"] as? String,
                      let type = args["type"] as? String else {
                    result(nil)
                    return
                }
                
                var value: Any?
                
                switch (type) {
                case "string":
                    value = UserDefaults.standard.string(forKey: key)
                case "int":
                    value = UserDefaults.standard.integer(forKey: key)
                case "bool":
                    value = UserDefaults.standard.bool(forKey: key)
                default:
                    break
                }
                
                result(value)
            default:
                result(FlutterMethodNotImplemented)
            }
        })

        let utilsChannel = FlutterMethodChannel(
            name: "com.cake_wallet/native_utils",
            binaryMessenger: controller.binaryMessenger)
        utilsChannel.setMethodCallHandler({ (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
            switch call.method {
            case "sec_random":
                guard let args = call.arguments as? Dictionary<String, Any>,
                      let count = args["count"] as? Int else {
                    result(nil)
                    return
                }

                result(secRandom(count: count))
            default:
                result(FlutterMethodNotImplemented)
            }
        })

        unstoppableDomainChannel.setMethodCallHandler({ [weak self]
                    (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
                    switch call.method {
                    case "getUnstoppableDomainAddress":
                        guard let args = call.arguments as? Dictionary<String, String>,
                              let domain = args["domain"],
                              let ticker = args["ticker"] else {
                            result(nil)
                            return
                        }

                        guard let resolution = self?.resolution else {
                            result(nil)
                            return
                        }

                        resolution.addr(domain: domain, ticker: ticker) { addrResult in
                          var address : String = ""

                          switch addrResult {
                              case .success(let returnValue):
                                address = returnValue
                              case .failure(let error):
                                print("Expected Address, but got \(error)")
                            }

                            result(address)
                        }
                    default:
                        result(FlutterMethodNotImplemented)
                    }
                })

        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
}