import {AfterViewInit, Component, Input, OnDestroy, OnInit, ViewChild} from "@angular/core";
import {User} from "../login/utils/helper.class";
import {ActivatedRoute, Router} from "@angular/router";
import {UserManagementService} from "../services/user-management.service";
import {UserRegistryService} from "../services/user-registry.service";
import {LoginErrorCodes} from "../login/utils/guardHelper.class";
import {Subscriber, Subscription} from "rxjs";
import {UntypedFormBuilder, UntypedFormControl, Validators} from "@angular/forms";
import {AlertModal} from "../utils/modal/alert";
import {properties} from "../../../environments/environment";
import {EmailService} from "../utils/email/email.service";
import {Composer} from "../utils/email/composer";

@Component({
  selector: 'role-verification',
  template: `
    <modal-alert #managerModal [overflowBody]="false" (alertOutput)="verifyManager()" (cancelOutput)="cancel()"
                 [okDisabled]="code.invalid || loading">
      <div>
        You have been invited to join <span
          class="uk-text-bold">{{name}}</span> {{(service === 'monitor' ? 'Monitor' : 'Research Community')}} Dashboard
        as a manager.
        <span class="uk-text-primary">Fill</span> in the <span class="uk-text-primary">verification code</span>, sent to
        your
        email, to accept the invitation request.
      </div>
      <div *ngIf="!loading" class="uk-margin-medium-top uk-flex uk-flex-center">
        <div input [formInput]="code" class="uk-width-medium" placeholder="Verification code">
          <span *ngIf="error" error>{{error}}</span>
        </div>
      </div>
      <div *ngIf="loading" class="uk-margin-medium-top uk-flex uk-flex-center">
        <loading></loading>
      </div>
    </modal-alert>
    <modal-alert #memberModal [overflowBody]="false" *ngIf="service == 'monitor'" (cancelOutput)="cancel()"
                 (alertOutput)="verifyMember()" [okDisabled]="code.invalid || loading">
      <div *ngIf="!isMember">
        <div>
          You have been invited to join <span class="uk-text-bold">{{name}}</span> Monitor Dashboard as a member.
          <span class="uk-text-primary">Fill</span> in the <span class="uk-text-primary">verification code</span>, sent
          to
          your
          email, to accept the invitation request.
        </div>
        <div *ngIf="!loading" class="uk-margin-medium-top uk-flex uk-flex-wrap uk-flex-center">
          <div input [formInput]="code" class="uk-width-medium" placeholder="Verification code">
            <span *ngIf="error" error>{{error}}</span>
          </div>
        </div>
        <div *ngIf="loading" class="uk-margin-medium-top">
          <loading></loading>
        </div>
      </div>
      <div *ngIf="isMember">
        <div>
          Welcome! You are now a member of the OpenAIRE Monitor Dashboard for the <span
            class="uk-text-bold">{{name}}</span>!
          From now on, you will have access to our restricted content.
        </div>
      </div>
    </modal-alert>
    <modal-alert #errorModal (alertOutput)="cancel()" [overflowBody]="false">
      <div>
        We are unable to process the request because the link is invalid, or it has expired.
      </div>
    </modal-alert>
  `
})
export class RoleVerificationComponent implements OnInit, OnDestroy, AfterViewInit {
  
  @Input()
  public id: string;
  @Input()
  public type: string;
  @Input()
  public name: string;
  @Input()
  public service: "connect" | "monitor" = "monitor";
  public user: User;
  public verification: any;
  public code: UntypedFormControl;
  private subscriptions: any[] = [];
  private paramsSubscription: Subscription;
  @ViewChild('managerModal') managerModal: AlertModal;
  @ViewChild('memberModal') memberModal: AlertModal;
  @ViewChild('errorModal') errorModal: AlertModal;
  public error: string = null;
  public loading: boolean = false;
  public isMember: boolean = false;
  
  constructor(private route: ActivatedRoute,
              private router: Router,
              private fb: UntypedFormBuilder,
              private emailService: EmailService,
              private userManagementService: UserManagementService,
              private userRegistryService: UserRegistryService) {
  }
  
  ngOnInit() {
    this.reset();
  }
  
  ngAfterViewInit() {
    this.subscriptions.push(this.userManagementService.getUserInfo().subscribe(user => {
      this.user = user;
      if (this.paramsSubscription instanceof Subscription) {
        this.paramsSubscription.unsubscribe();
      }
      this.paramsSubscription = this.route.queryParams.subscribe(params => {
        if (params && params['verify']) {
          if (this.user) {
            this.subscriptions.push(this.userRegistryService.getInvitation(params['verify']).subscribe(verification => {
              this.verification = verification;
              if (this.user.email === this.verification.email.toLowerCase() && this.id === this.verification.entity && this.type === this.verification.type) {
                if (this.verification.verificationType === 'manager') {
                  this.openManagerModal();
                } else if (this.verification.verificationType === 'member' && this.service === "monitor") {
                  this.openMemberModal();
                } else {
                  this.openErrorModal();
                }
              } else {
                this.openErrorModal();
              }
            }, error => {
              this.openErrorModal();
            }));
          } else {
            this.router.navigate(['/user-info'], {
              queryParams: {
                'errorCode': LoginErrorCodes.NOT_LOGIN,
                'redirectUrl': this.router.url
              }
            });
          }
        }
      });
    }));
  }
  
  ngOnDestroy() {
    if (this.paramsSubscription instanceof Subscription) {
      this.paramsSubscription.unsubscribe();
    }
    this.subscriptions.forEach(subscription => {
      if (subscription instanceof Subscriber) {
        subscription.unsubscribe();
      }
    });
  }
  
  public openManagerModal() {
    this.error = null;
    this.managerModal.okButtonLeft = false;
    this.managerModal.okButtonText = 'Accept';
    this.managerModal.stayOpen = true;
    this.managerModal.cancelButtonText = 'Cancel';
    this.managerModal.alertTitle = 'Manager Invitation';
    this.managerModal.open();
  }
  
  public openMemberModal() {
    this.error = null;
    this.isMember = false;
    this.memberModal.okButtonLeft = false;
    this.memberModal.okButtonText = 'Accept';
    this.memberModal.stayOpen = true;
    this.memberModal.cancelButtonText = 'Cancel';
    this.memberModal.alertTitle = 'Member Invitation';
    this.memberModal.open();
  }
  
  public openErrorModal() {
    this.error = null;
    this.errorModal.cancelButton = false;
    this.errorModal.okButtonText = 'Ok';
    this.errorModal.alertTitle = 'Invalid request';
    this.errorModal.open();
  }
  
  public verifyManager() {
    this.loading = true;
    this.subscriptions.push(this.userRegistryService.verify(this.verification.id, this.code.value).subscribe(() => {
      this.managerModal.cancel();
      this.error = null;
      this.userManagementService.updateUserInfo(() => {
        if (this.service === "monitor") {
          this.loading = false;
          this.router.navigate(['/admin/' + this.verification.entity]);
        } else {
          this.subscriptions.push(this.emailService.notifyManagers(this.id, 'manager',
            Composer.composeEmailToInformOldManagersForTheNewOnes(this.name, this.id)).subscribe(() => {
            this.subscriptions.push(this.emailService.notifyNewManager(Composer.composeEmailForNewManager(this.id, this.name)).subscribe(
              () => {
                this.loading = false;
                window.location.href = properties.adminPortalURL + '/' + this.verification.entity;
              },
              error1 => {
                console.error(error1);
                this.loading = false;
                window.location.href = properties.adminPortalURL + '/' + this.verification.entity;
              }
            ));
          }, error => {
            console.error(error);
            this.loading = false;
            window.location.href = properties.adminPortalURL + '/' + this.verification.entity;
          }));
        }
      });
    }, error => {
      this.loading = false;
      this.error = 'The verification code is invalid';
    }));
  }
  
  public verifyMember() {
    this.loading = true;
    if (!this.isMember) {
      this.subscriptions.push(this.userRegistryService.verify(this.verification.id, this.code.value, "member").subscribe(() => {
        this.loading = false;
        this.error = null;
        this.userManagementService.updateUserInfo(() => {
          this.memberModal.cancelButton = false;
          this.memberModal.okButtonText = 'Close';
          this.isMember = true;
        });
      }, error => {
        this.loading = false;
        this.error = 'The verification code is invalid';
      }));
    } else {
      this.memberModal.cancel();
    }
  }
  
  public reset() {
    this.code = this.fb.control('', [Validators.required, Validators.pattern('^[+0-9]{6}$')]);
  }
  
  cancel() {
    this.router.navigate([this.router.url.split('?')[0]]);
  }
}