/**
 * 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, EventEmitter, Input, OnInit, Output, ViewChild} from '@angular/core';
import {TransactionForm} from '../domain/transaction-form.model';
import {FormBuilder, FormGroup, Validators} from '@angular/forms';
import {FimsValidators} from '../../../../common/validator/validators';
import {FimsCase} from '../../../../services/portfolio/domain/fims-case.model';
import {TellerTransactionCosts} from '../../../../services/teller/domain/teller-transaction-costs.model';
import {TdStepComponent} from '@covalent/core';

@Component({
  selector: 'fims-loan-transaction-form',
  templateUrl: './form.component.html'
})
export class LoanTransactionFormComponent implements OnInit {

  private _transactionCreated: boolean;

  chargesIncluded = true;

  form: FormGroup;

  @Input('caseInstances') caseInstances: FimsCase[];
  @Input('transactionCosts') transactionCosts: TellerTransactionCosts;
  @Input('transactionCreated') set transactionCreated(transactionCreated: boolean) {
    this._transactionCreated = transactionCreated;
    if (transactionCreated) {
      this.confirmationStep.open();
    }
  };

  @Input('paymentHint') paymentHint: string;

  @Output('onCreateTransaction') onCreateTransaction = new EventEmitter<TransactionForm>();
  @Output('onConfirmTransaction') onConfirmTransaction = new EventEmitter<boolean>();
  @Output('onCancelTransaction') onCancelTransaction = new EventEmitter<void>();
  @Output('onCaseSelected') onCaseSelected = new EventEmitter<FimsCase>();
  @Output('onCancel') onCancel = new EventEmitter<void>();

  @ViewChild('transactionStep') transactionStep: TdStepComponent;
  @ViewChild('confirmationStep') confirmationStep: TdStepComponent;

  constructor(private formBuilder: FormBuilder) {}

  ngOnInit(): void {
    this.form = this.formBuilder.group({
      caseInstance: ['', Validators.required],
      amount: ['', [Validators.required, FimsValidators.greaterThanValue(0)]],
    });

    this.form.get('caseInstance').valueChanges
      .subscribe(caseInstance => this.onCaseSelected.emit(caseInstance));

    this.transactionStep.open();
  }

  createTransaction(): void {
    const fimsCase: FimsCase = this.form.get('caseInstance').value;

    const formData: TransactionForm = {
      productIdentifier: fimsCase.productIdentifier,
      productCaseIdentifier: fimsCase.identifier,
      accountIdentifier: fimsCase.customerLoanAccountIdentifier,
      customerIdentifier: fimsCase.parameters.customerIdentifier,
      amount: this.form.get('amount').value
    };

    this.onCreateTransaction.emit(formData);
  }

  confirmTransaction(chargesIncluded: boolean): void {
    this.onConfirmTransaction.emit(chargesIncluded);
  }

  cancelTransaction(): void {
    this.onCancelTransaction.emit();
  }

  cancel(): void {
    this.onCancel.emit();
  }

  get transactionCreated(): boolean {
    return this._transactionCreated;
  }

  get createTransactionDisabled(): boolean {
    return this.form.invalid || this.transactionCreated;
  }
}