import {Injectable} from '@angular/core';
import {Capabilities} from './capabilities.model';
import {SystemService} from '../system/system.service';

/**
 * Handles the systems capabilities. Capabilities are settings that enable/disable certain client features.
 */
@Injectable({
  providedIn: 'root'
})
export class CapabilitiesService {

  private capabilities: Capabilities;

  /**
   * @ignore
   */
  constructor(private system: SystemService) {
  }

  /**
   * Sets the capabilities based on a given object set by auth.service
   *
   * @param userCapabilities Object containing capabilities properties
   * @param useSingleSingOn Whether or not to set up single signon on capability
   * @returns The newly created capabilities object
   */
  setCapabilities(userCapabilities: any, useSingleSingOn?: boolean): Capabilities {

    this.capabilities = {
      bpm: userCapabilities.bpm,
      favorites: userCapabilities.favorites,
      followup: userCapabilities.followup,
      subscription: userCapabilities.subscription,
      intray: userCapabilities.intray,
      storedqueries: userCapabilities.storedqueries,
      recyclebin: userCapabilities.recyclebin,
      inbox: userCapabilities.bpm || userCapabilities.followup || userCapabilities.subscription,
      notifications: userCapabilities.followup || userCapabilities.subscription,
      template: userCapabilities.template,
      sso: useSingleSingOn || false,
    };
    return this.capabilities;
  }

  /**
   * Getter for the Capabilities
   */
  getCapabilities(): Capabilities {
    return {...this.capabilities, signing: !!this.system.getObjectType('yuvsigning')};
  }

  /**
   * Check if Capability is present
   * @param capability Capability to check for
   * @returns True if the capability is set, false otherwise
   */
  hasCapability(capability: string): boolean {
    return this.capabilities[capability];
  }
}