import {ChangeDetectionStrategy, Component, OnInit, ViewChild} from '@angular/core';
import {MatPaginator} from '@angular/material/paginator';
import {MatSort} from '@angular/material/sort';
import {LoggingService, TokenService} from '@app/_services';
import {MatTableDataSource} from '@angular/material/table';
import {Router} from '@angular/router';
import {exportCsv} from '@app/_helpers';
import {TokenRegistry} from '../../_eth';
import {Token} from '../../_models';

@Component({
  selector: 'app-tokens',
  templateUrl: './tokens.component.html',
  styleUrls: ['./tokens.component.scss'],
  changeDetection: ChangeDetectionStrategy.OnPush
})
export class TokensComponent implements OnInit {
  dataSource: MatTableDataSource<any>;
  columnsToDisplay: Array<string> = ['name', 'symbol', 'address', 'supply'];
  @ViewChild(MatPaginator) paginator: MatPaginator;
  @ViewChild(MatSort) sort: MatSort;
  tokens: Array<Promise<string>>;

  constructor(
    private tokenService: TokenService,
    private loggingService: LoggingService,
    private router: Router
  ) { }

  async ngOnInit(): Promise<void> {
    this.tokenService.LoadEvent.subscribe(async () => {
      this.tokens = await this.tokenService.getTokens();
    });
    this.tokens = await this.tokenService.getTokens();
    this.loggingService.sendInfoLevelMessage(this.tokens);
    this.dataSource = new MatTableDataSource(this.tokens);
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
  }

  doFilter(value: string): void {
    this.dataSource.filter = value.trim().toLocaleLowerCase();
  }

  async viewToken(token): Promise<void> {
    await this.router.navigateByUrl(`/tokens/${token.symbol}`);
  }

  downloadCsv(): void {
    exportCsv(this.tokens, 'tokens');
  }
}