import {Component, OnInit, ViewChild} from '@angular/core';
import {MatTableDataSource} from '@angular/material/table';
import {SelectionModel} from '@angular/cdk/collections';
import {MatPaginator} from '@angular/material/paginator';
import {MatSort} from '@angular/material/sort';
import {UserService} from '@app/_services';
import {Router} from '@angular/router';

@Component({
  selector: 'app-accounts',
  templateUrl: './accounts.component.html',
  styleUrls: ['./accounts.component.scss']
})
export class AccountsComponent implements OnInit {
  dataSource: MatTableDataSource<any>;
  accounts: any[] = [];
  displayedColumns = ['name', 'phone', 'created', 'balance', 'type', 'status', 'location', 'failedPinAttempts', 'select'];
  initialSelection = [];
  allowMultiSelect = true;
  selection: SelectionModel<any>;
  accountsType = 'all';

  @ViewChild(MatPaginator) paginator: MatPaginator;
  @ViewChild(MatSort) sort: MatSort;

  constructor(
    private userService: UserService,
    private router: Router
  ) {
    this.userService.getAccounts();
  }

  ngOnInit(): void {
    this.userService.accountsSubject.subscribe(accounts => {
      this.dataSource = new MatTableDataSource<any>(accounts);
      this.dataSource.paginator = this.paginator;
      this.dataSource.sort = this.sort;
      this.accounts = accounts;
    });
    this.selection = new SelectionModel<any>(this.allowMultiSelect, this.initialSelection);
  }

  isAllSelected(): boolean {
    const numSelected = this.selection.selected.length;
    const numRows = this.dataSource.data.length;
    return numSelected === numRows;
  }

  masterToggle(): void {
    this.isAllSelected() ? this.selection.clear() : this.dataSource.data.forEach(row => this.selection.select(row));
  }

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

  viewAccount(account): void {
    this.router.navigateByUrl(`/accounts/${account.id}`).then();
  }

  approveAccount(): void {
    for (const account of this.selection.selected) {
      account.status = 'approved';
    }
  }

  filterAccounts(): void {
    if (this.accountsType === 'all') {
      this.userService.accountsSubject.subscribe(accounts => {
        this.dataSource.data = accounts;
        this.accounts = accounts;
      });
    } else {
      this.dataSource.data = this.accounts.filter(account => account.type === this.accountsType);
    }
  }
}