RTL/src/app/shared/components/ln-services/loop/loop.component.ts

import { Component, OnInit, OnDestroy } from '@angular/core';
import { Router, ResolveEnd, Event } from '@angular/router';
import { Subject } from 'rxjs';
import { takeUntil, filter } from 'rxjs/operators';
import { Store } from '@ngrx/store';
import { faInfinity } from '@fortawesome/free-solid-svg-icons';

import { LoopTypeEnum } from '../../../services/consts-enums-functions';
import { LoopModalComponent } from './loop-modal/loop-modal.component';
import { LoopQuote, LoopSwapStatus } from '../../../models/loopModels';
import { LoopService } from '../../../services/loop.service';

import { RTLState } from '../../../../store/rtl.state';
import { openAlert } from '../../../../store/rtl.actions';

@Component({
  selector: 'rtl-loop',
  templateUrl: './loop.component.html',
  styleUrls: ['./loop.component.scss']
})
export class LoopComponent implements OnInit, OnDestroy {

  public faInfinity = faInfinity;
  private targetConf = 2;
  public inAmount = 250000;
  public quotes: LoopQuote[] = [];
  public LoopTypeEnum = LoopTypeEnum;
  public selectedSwapType: LoopTypeEnum = LoopTypeEnum.LOOP_OUT;
  public storedSwaps: LoopSwapStatus[] = [];
  public filteredSwaps: LoopSwapStatus[] = [];
  public emptyTableMessage = 'No swap data available.';
  public flgLoading: Array<Boolean | 'error'> = [true];
  public links = [{ link: 'loopout', name: 'Loop Out' }, { link: 'loopin', name: 'Loop In' }];
  public activeTab = this.links[0];
  private unSubs: Array<Subject<void>> = [new Subject(), new Subject(), new Subject(), new Subject()];

  constructor(private router: Router, private loopService: LoopService, private store: Store<RTLState>) { }

  ngOnInit() {
    this.loopService.listSwaps();
    const linkFound = this.links.find((link) => this.router.url.includes(link.link));
    this.activeTab = linkFound ? linkFound : this.links[0];
    this.selectedSwapType = linkFound && linkFound.link === 'loopin' ? LoopTypeEnum.LOOP_IN : LoopTypeEnum.LOOP_OUT;
    this.router.events.pipe(takeUntil(this.unSubs[0]), filter((e) => e instanceof ResolveEnd)).
      subscribe({
        next: (value: ResolveEnd | Event) => {
          const linkFound = this.links.find((link) => (<ResolveEnd>value).urlAfterRedirects.includes(link.link));
          this.activeTab = linkFound ? linkFound : this.links[0];
          this.selectedSwapType = linkFound && linkFound.link === 'loopin' ? LoopTypeEnum.LOOP_IN : LoopTypeEnum.LOOP_OUT;
        }
      });
    this.loopService.swapsChanged.
      pipe(takeUntil(this.unSubs[1])).
      subscribe({
        next: (swaps: LoopSwapStatus[]) => {
          this.flgLoading[0] = false;
          this.storedSwaps = swaps;
          this.filteredSwaps = this.storedSwaps?.filter((swap) => swap.type === this.selectedSwapType);
        }, error: (err) => {
          this.flgLoading[0] = 'error';
          this.emptyTableMessage = err.message ? err.message : 'No loop ' + ((this.selectedSwapType === LoopTypeEnum.LOOP_IN) ? 'in' : 'out') + ' available.';
        }
      });
  }

  onSelectedIndexChange(activeTab: any) {
    this.selectedSwapType = (activeTab.link === 'loopin') ? LoopTypeEnum.LOOP_IN : LoopTypeEnum.LOOP_OUT;
    this.filteredSwaps = this.storedSwaps?.filter((swap) => swap.type === this.selectedSwapType);
  }

  onLoop(direction: LoopTypeEnum) {
    if (direction === LoopTypeEnum.LOOP_IN) {
      this.loopService.getLoopInTermsAndQuotes(this.targetConf).
        pipe(takeUntil(this.unSubs[2])).
        subscribe({
          next: (response) => {
            this.store.dispatch(openAlert({
              payload: {
                data: {
                  minQuote: response[0],
                  maxQuote: response[1],
                  direction: direction,
                  component: LoopModalComponent
                }
              }
            }));
          }
        });
    } else {
      this.loopService.getLoopOutTermsAndQuotes(this.targetConf).
        pipe(takeUntil(this.unSubs[3])).
        subscribe({
          next: (response) => {
            this.store.dispatch(openAlert({
              payload: {
                data: {
                  minQuote: response[0],
                  maxQuote: response[1],
                  direction: direction,
                  component: LoopModalComponent
                }
              }
            }));
          }
        });
    }
  }

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

}