import Flutter
import GoogleMaps
import UIKit

@main
@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    // 구글 지도 키 — ios/config/Maps.xcconfig → Info.plist. 없으면 지도만 비고 앱은 정상이다.
    if let key = Bundle.main.object(forInfoDictionaryKey: "GMSApiKey") as? String, !key.isEmpty {
      GMSServices.provideAPIKey(key)
    }
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
    // 국가 표시명 — 앱 언어로 OS 가 아는 이름을 OS 정렬 순서로 준다(Dart `loadCountryNames`). `[[코드, 이름], …]`.
    guard let registrar = engineBridge.pluginRegistry.registrar(forPlugin: "FanuzuLocale") else { return }
    FlutterMethodChannel(name: "kr.co.fanuzu.app/locale", binaryMessenger: registrar.messenger())
      .setMethodCallHandler { call, result in
        guard call.method == "countryNames" else {
          result(FlutterMethodNotImplemented)
          return
        }
        let tag = (call.arguments as? [String: Any])?["locale"] as? String ?? "ko"
        let locale = Locale(identifier: tag)
        let pairs: [[String]] = Locale.isoRegionCodes
          .compactMap { code in locale.localizedString(forRegionCode: code).map { [code, $0] } }
          .sorted { $0[1].compare($1[1], locale: locale) == .orderedAscending }
        result(pairs)
      }
  }
}