/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

import { Component, Input, OnInit, ViewEncapsulation } from '@angular/core';
import { DialogRef } from '@streampipes/shared-ui';
import {
  AbstractControl,
  FormBuilder,
  FormControl,
  FormGroup,
  ValidationErrors,
  ValidatorFn,
  Validators
} from '@angular/forms';
import { UserAccount, UserService } from '@streampipes/platform-services';

@Component({
  selector: 'sp-change-email-dialog',
  templateUrl: './change-email-dialog.component.html',
  styleUrls: ['./change-email-dialog.component.scss'],
  encapsulation: ViewEncapsulation.None
})
export class ChangeEmailDialogComponent implements OnInit {

  parentForm: FormGroup;

  @Input()
  user: UserAccount;

  clonedUser: UserAccount;

  email = '';
  confirmMail = '';
  confirmPw = '';

  operationApplied = false;
  error = false;
  errorMessage = '';

  constructor(private dialogRef: DialogRef<ChangeEmailDialogComponent>,
              private fb: FormBuilder,
              private userService: UserService) {

  }

  ngOnInit(): void {
    this.clonedUser = UserAccount.fromData(this.user);
    this.email = this.clonedUser.username;
    this.parentForm = this.fb.group({});
    this.parentForm.addControl('email', new FormControl(this.email, [Validators.required, Validators.email]));
    this.parentForm.addControl('emailConfirm', new FormControl(this.confirmMail, [Validators.required, Validators.email]));
    this.parentForm.addControl('passwordConfirm', new FormControl(this.confirmPw, [Validators.required]));
    this.parentForm.setValidators(this.checkEmail);

    this.parentForm.valueChanges.subscribe(v => {
      this.email = v.email;
      this.confirmMail = v.emailConfirm;
      this.confirmPw = v.passwordConfirm;
    });
  }

  close(refresh?: boolean) {
    this.dialogRef.close(refresh);
  }

  update() {
    this.clonedUser.username = this.email;
    this.clonedUser.password = this.confirmPw;
    this.userService.updateUsername(this.clonedUser).subscribe(result => {
     this.close(true);
    }, error => {
      this.operationApplied = true;
      this.error = true;
      this.errorMessage = error.error.notifications[0].title;
    });
  }

  checkEmail: ValidatorFn = (group: AbstractControl): ValidationErrors | null => {
    const email = group.get('email');
    const emailConfirm = group.get('emailConfirm');

    if (!email || !emailConfirm) {
      return null;
    }
    return email.value === emailConfirm.value ? null : {notMatching: true};
  }
}

