import {Component, OnInit, ViewChild} from "@angular/core";
import {AuthenticationService} from "../../model/network/authentication.service";
import {UserDTO, UserRoles} from "../../../../common/entities/UserDTO";
import {Utils} from "../../../../common/Utils";
import {UserManagerSettingsService} from "./usermanager.settings.service";
import {ModalDirective} from "ngx-bootstrap/modal";
import {NavigationService} from "../../model/navigation.service";
import {NotificationService} from "../../model/notification.service";
import {ErrorCodes, ErrorDTO} from "../../../../common/entities/Error";

@Component({
  selector: 'settings-usermanager',
  templateUrl: './usermanager.settings.component.html',
  styleUrls: ['./usermanager.settings.component.css',
    './../_abstract/abstract.settings.component.css'],
  providers: [UserManagerSettingsService],
})
export class UserMangerSettingsComponent implements OnInit {
  @ViewChild('userModal') public childModal: ModalDirective;
  public newUser = <UserDTO>{};
  public userRoles: Array<any> = [];
  public users: Array<UserDTO> = [];
  public enabled = true;
  public error: string = null;
  public inProgress = false;

  constructor(private _authService: AuthenticationService,
              private _navigation: NavigationService,
              private _userSettings: UserManagerSettingsService,
              private notification: NotificationService) {
  }


  ngOnInit() {
    if (!this._authService.isAuthenticated() ||
      this._authService.user.value.role < UserRoles.Admin) {
      this._navigation.toLogin();
      return;
    }
    this.userRoles = Utils
      .enumToArray(UserRoles)
      .filter(r => r.key != UserRoles.LimitedGuest)
      .filter(r => r.key <= this._authService.user.value.role)
      .sort((a, b) => a.key - b.key);

    this.getSettings();
    this.getUsersList();
  }

  private async getUsersList() {
    try {
      this.users = await this._userSettings.getUsers();
    } catch (err) {
      this.users = [];
      if ((<ErrorDTO>err).code != ErrorCodes.USER_MANAGEMENT_DISABLED) {
        throw err;
      }
    }
  }

  private async getSettings() {
    this.enabled = await this._userSettings.getSettings();
  }


  canModifyUser(user: UserDTO): boolean {
    let currentUser = this._authService.user.value;
    if (!currentUser) {
      return false;
    }

    return currentUser.name != user.name && currentUser.role >= user.role;
  }

  initNewUser() {
    this.newUser = <UserDTO>{role: UserRoles.User};
    this.childModal.show();
  }

  async addNewUser() {
    await this._userSettings.createUser(this.newUser);
    await this.getUsersList();
    this.childModal.hide();
  }

  async updateRole(user: UserDTO) {
    await this._userSettings.updateRole(user);
    await this.getUsersList();
    this.childModal.hide();
  }

  async deleteUser(user: UserDTO) {
    await this._userSettings.deleteUser(user);
    await this.getUsersList();
    this.childModal.hide();
  }

  async switched(event: { previousValue: false, currentValue: true }) {
    this.inProgress = true;
    this.error = "";
    this.enabled = event.currentValue;
    try {
      await this._userSettings.updateSettings(this.enabled);
      await this.getSettings();
      if (this.enabled == true) {
        this.notification.success('Password protection enabled', "Success");
        this.getUsersList();
      } else {
        this.notification.success('Password protection disabled', "Success");
      }
    } catch (err) {
      console.log(err);
      if (err.message) {
        this.error = (<ErrorDTO>err).message;
      }
    }
    this.inProgress = false;
  }
}