import Flutter
import UIKit

public class AppUpgradePlugin: NSObject, FlutterPlugin {
  public static func register(with registrar: FlutterPluginRegistrar) {
    let channel = FlutterMethodChannel(name: "yx_app_upgrade_flutter", binaryMessenger: registrar.messenger())
    let instance = AppUpgradePlugin()
    registrar.addMethodCallDelegate(instance, channel: channel)
  }

  public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
    switch call.method {
    case "getPlatformVersion":
      result(
        "iOS " + UIDevice.current.systemVersion
      )
    case "goToAppStore":
      let args = call.arguments as? [String: Any]
      let url = args?["url"] as? String
      if let url = url {
        if let appUrl = URL(string: url) {
          UIApplication.shared.open(appUrl, options: [:], completionHandler: nil)
          result(true)
        } else {
          result(false)
        }
      } else {
        result(false)
      }
    case "getDownloadPath":
      let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
      result(paths.first?.path)
    case "checkApkExists":
      // Not applicable for iOS
      result(false)
    case "goToMarket":
      // For iOS, goToMarket is the same as goToAppStore
      let args = call.arguments as? [String: Any]
      let url = args?["url"] as? String
      if let url = url, let appUrl = URL(string: url) {
        UIApplication.shared.open(appUrl, options: [:], completionHandler: nil)
        result(true)
      } else {
        result(false)
      }
    default:
      result(FlutterMethodNotImplemented)
    }
  }
}