import { Component, OnDestroy, OnInit } 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 { SwapTypeEnum } from '../../../services/consts-enums-functions';
import { SwapModalComponent } from './swap-modal/swap-modal.component';
import { ReverseSwap, Swap, ListSwaps } from '../../../models/boltzModels';
import { BoltzService } from '../../../services/boltz.service';

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

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

  public swapTypeEnum = SwapTypeEnum;
  public selectedSwapType: SwapTypeEnum = SwapTypeEnum.SWAP_OUT;
  public swaps: ListSwaps = {};
  public swapsData: Swap[] | ReverseSwap[] = [];
  public emptyTableMessage = 'No swap data available.';
  public flgLoading: Array<Boolean | 'error'> = [true];
  public links = [{ link: 'swapout', name: 'Swap Out' }, { link: 'swapin', name: 'Swap In' }];
  public activeTab = this.links[0];
  private unSubs: Array<Subject<void>> = [new Subject(), new Subject(), new Subject(), new Subject()];

  constructor(private router: Router, private store: Store<RTLState>, private boltzService: BoltzService) { }

  ngOnInit() {
    this.boltzService.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 === 'swapin' ? SwapTypeEnum.SWAP_IN : SwapTypeEnum.SWAP_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 === 'swapin' ? SwapTypeEnum.SWAP_IN : SwapTypeEnum.SWAP_OUT;
        }
      });
    this.boltzService.swapsChanged.
      pipe(takeUntil(this.unSubs[1])).
      subscribe({
        next: (swaps: ListSwaps) => {
          this.swaps = swaps;
          this.swapsData = (this.selectedSwapType === SwapTypeEnum.SWAP_IN && swaps.swaps) ? swaps.swaps : (this.selectedSwapType === SwapTypeEnum.SWAP_OUT && swaps.reverseSwaps) ? swaps.reverseSwaps : [];
          this.flgLoading[0] = false;
        }, error: (err) => {
          this.flgLoading[0] = 'error';
          this.emptyTableMessage = err.message ? err.message : 'No swap ' + ((this.selectedSwapType === SwapTypeEnum.SWAP_IN) ? 'in' : 'out') + ' available.';
        }
      });
  }

  onSelectedIndexChange(activeTab: any) {
    if (activeTab.link === 'swapin') {
      this.selectedSwapType = SwapTypeEnum.SWAP_IN;
      this.swapsData = this.swaps.swaps || [];
    } else {
      this.selectedSwapType = SwapTypeEnum.SWAP_OUT;
      this.swapsData = this.swaps.reverseSwaps || [];
    }
  }

  onSwap(direction: SwapTypeEnum) {
    this.boltzService.serviceInfo().
      pipe(takeUntil(this.unSubs[2])).
      subscribe({
        next: (response: any) => {
          this.store.dispatch(openAlert({
            payload: {
              data: {
                serviceInfo: response,
                direction: direction,
                component: SwapModalComponent
              }
            }
          }));
        }
      });
  }

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

}