ScreenLockEnabledCheck.ts

import { DeviceCheck } from "../DeviceCheck";
import { DeviceCheckResult } from "../DeviceCheckResult";

declare var cordova: any;
declare var document: any;

/**
 * Security check to detect if a device has a screen lock set or not.
 */
export class ScreenLockEnabledCheck implements DeviceCheck {
  /**
   * Get the name of the check.
   */
  get name(): string {
    return "Screen Lock Check";
  }

  /**
   * Determine whether a device has a screen lock set or not.
   * If the device *has* a screen lock set then the check
   * will pass.
   *
   * @returns The result of the check.
   */
  public check(): Promise<DeviceCheckResult> {
    return new Promise((resolve, reject) => {
      if (!document) {
        reject(new Error("Cordova not fully loaded"));
      }

      document.addEventListener("deviceready", () => {
        if (!cordova || !cordova.plugins || !cordova.plugins.PinCheck) {
          reject(new Error("Could not find plugin PinCheck"));
        }

        cordova.plugins.PinCheck.isPinSetup(() => resolve({ name: this.name, passed: true }),
          () => resolve({ name: this.name, passed: false }));
      }, false);
    });
  }
}