RTL/src/app/lnd/transactions/create-invoice-modal/create-invoice.component.ts

import { Component, OnInit, OnDestroy, Inject } from '@angular/core';
import { DecimalPipe } from '@angular/common';
import { Subject } from 'rxjs';
import { filter, takeUntil } from 'rxjs/operators';
import { Store } from '@ngrx/store';
import { Actions } from '@ngrx/effects';
import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
import { faExclamationTriangle } from '@fortawesome/free-solid-svg-icons';

import { InvoiceInformation } from '../../../shared/models/alertData';
import { TimeUnitEnum, CurrencyUnitEnum, TIME_UNITS, CURRENCY_UNIT_FORMATS, PAGE_SIZE } from '../../../shared/services/consts-enums-functions';
import { SelNodeChild } from '../../../shared/models/RTLconfig';
import { GetInfo } from '../../../shared/models/lndModels';
import { CommonService } from '../../../shared/services/common.service';

import * as RTLActions from '../../../store/rtl.actions';
import * as fromRTLReducer from '../../../store/rtl.reducers';

@Component({
  selector: 'rtl-create-invoices',
  templateUrl: './create-invoice.component.html',
  styleUrls: ['./create-invoice.component.scss']
})
export class CreateInvoiceComponent implements OnInit, OnDestroy {
  public faExclamationTriangle = faExclamationTriangle;
  public selNode: SelNodeChild = {};
  public memo = '';
  public expiry: number;
  public invoiceValue: number;
  public invoiceValueHint = '';
  public invoicePaymentReq = '';
  public invoices: any;
  public information: GetInfo = {};
  public private = false;
  public expiryStep = 100;
  public pageSize = PAGE_SIZE;
  public timeUnitEnum = TimeUnitEnum;
  public timeUnits = TIME_UNITS;
  public selTimeUnit = TimeUnitEnum.SECS;
  public invoiceError = '';
  private unSubs: Array<Subject<void>> = [new Subject(), new Subject(), new Subject(), new Subject(), new Subject()];

  constructor(public dialogRef: MatDialogRef<CreateInvoiceComponent>, @Inject(MAT_DIALOG_DATA) public data: InvoiceInformation, private store: Store<fromRTLReducer.RTLState>, private decimalPipe: DecimalPipe, private commonService: CommonService, private actions$: Actions) {}

  ngOnInit() {
    this.pageSize = this.data.pageSize;
    this.store.select('lnd')
    .pipe(takeUntil(this.unSubs[0]))
    .subscribe((rtlStore) => {
      this.selNode = rtlStore.nodeSettings;
      this.information = rtlStore.information;
    });
    this.actions$.pipe(takeUntil(this.unSubs[1]),
    filter(action => action.type === RTLActions.EFFECT_ERROR_LND || action.type === RTLActions.FETCH_INVOICES)) //NEWLY_SAVED_INVOICE
    .subscribe((action: RTLActions.EffectErrorLnd | RTLActions.FetchInvoices) => { // NewlySavedInvoice
      if (action.type === RTLActions.FETCH_INVOICES) { // NEWLY_SAVED_INVOICE && openModal: false at line 73
        this.dialogRef.close();
      }    
      if (action.type === RTLActions.EFFECT_ERROR_LND && action.payload.action === 'SaveNewInvoice') {
        this.invoiceError = action.payload.message;
      }
    });
  }

  onAddInvoice(form: any) {
    this.invoiceError = '';
    let expiryInSecs = (this.expiry ? this.expiry : 3600);
    if (this.selTimeUnit !== TimeUnitEnum.SECS) {
      expiryInSecs = this.commonService.convertTime(this.expiry, this.selTimeUnit, TimeUnitEnum.SECS);
    }
    this.store.dispatch(new RTLActions.OpenSpinner('Adding Invoice...'));
    this.store.dispatch(new RTLActions.SaveNewInvoice({
      memo: this.memo, invoiceValue: this.invoiceValue, private: this.private, expiry: expiryInSecs, pageSize: this.pageSize, openModal: true
    }));
  }

  resetData() {
    this.memo = '';
    this.invoiceValue = undefined;
    this.private = false;
    this.expiry = undefined;
    this.invoiceValueHint = '';
    this.selTimeUnit = TimeUnitEnum.SECS;
    this.invoiceError = '';
  }

  onInvoiceValueChange() {
    if(this.selNode.fiatConversion && this.invoiceValue > 99) {
      this.invoiceValueHint = '';
      this.commonService.convertCurrency(this.invoiceValue, CurrencyUnitEnum.SATS, this.selNode.currencyUnits[2], this.selNode.fiatConversion)
      .pipe(takeUntil(this.unSubs[2]))
      .subscribe(data => {
        this.invoiceValueHint = '= ' + data.symbol + this.decimalPipe.transform(data.OTHER, CURRENCY_UNIT_FORMATS.OTHER) + ' ' + data.unit;
      });
    }
  }

  onTimeUnitChange(event: any) {
    if(this.expiry && this.selTimeUnit !== event.value) {
      this.expiry = this.commonService.convertTime(this.expiry, this.selTimeUnit, event.value);
    }
    this.selTimeUnit = event.value;
  }

  ngOnDestroy() {
    this.unSubs.forEach(completeSub => {
      completeSub.next();
      completeSub.complete();
    });
  }

}