import { AfterViewInit, Component, ElementRef, inject, OnInit, ViewChild } from '@angular/core';
import { FormControl, FormGroup, ReactiveFormsModule } from '@angular/forms';
import { MatAnchor } from '@angular/material/button';
import { MatCard, MatCardContent, MatCardHeader, MatCardTitle, MatCardTitleGroup } from '@angular/material/card';
import { MatFormField, MatLabel, MatSuffix } from '@angular/material/form-field';
import { MatIcon } from '@angular/material/icon';
import { MatInput } from '@angular/material/input';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort, MatSortHeader } from '@angular/material/sort';
import {
  MatCell,
  MatCellDef,
  MatColumnDef,
  MatHeaderCell,
  MatHeaderCellDef,
  MatHeaderRow,
  MatHeaderRowDef,
  MatRow,
  MatRowDef,
  MatTable,
} from '@angular/material/table';
import { ActivatedRoute, RouterLink } from '@angular/router';
import { Observable } from 'rxjs';
import { debounceTime, distinctUntilChanged } from 'rxjs/operators';

import { Account } from '../../core/account';
import { AccountType } from '../../core/account-type';
import { AccountListDataSource } from './account-list-datasource';

@Component({
  selector: 'app-account-list',
  templateUrl: './account-list.component.html',
  styleUrls: ['./account-list.component.css'],
  imports: [
    MatCard,
    MatCardHeader,
    MatCardTitleGroup,
    MatCardTitle,
    MatAnchor,
    RouterLink,
    MatIcon,
    MatCardContent,
    ReactiveFormsModule,
    MatFormField,
    MatLabel,
    MatInput,
    MatTable,
    MatSort,
    MatColumnDef,
    MatHeaderCellDef,
    MatHeaderCell,
    MatSortHeader,
    MatCellDef,
    MatCell,
    MatSuffix,
    MatHeaderRowDef,
    MatHeaderRow,
    MatRowDef,
    MatRow,
    MatPaginator,
  ],
})
export class AccountListComponent implements OnInit, AfterViewInit {
  private route = inject(ActivatedRoute);

  @ViewChild('filterElement', { static: true }) filterElement!: ElementRef<HTMLInputElement>;
  @ViewChild(MatPaginator, { static: true }) paginator!: MatPaginator;
  @ViewChild(MatSort, { static: true }) sort!: MatSort;
  dataSource: AccountListDataSource;
  filter: Observable<string>;
  form: FormGroup<{
    filter: FormControl<string>;
  }>;

  list: Account[] = [];
  accountTypes: AccountType[] = [];

  /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
  displayedColumns = ['name', 'type', 'isActive', 'isReconcilable', 'costCentre'];

  constructor() {
    this.form = new FormGroup({
      filter: new FormControl<string>('', { nonNullable: true }),
    });
    // Listen to Filter Change
    this.filter = this.form.controls.filter.valueChanges.pipe(debounceTime(150), distinctUntilChanged());

    this.dataSource = new AccountListDataSource(this.list, this.filter, this.paginator, this.sort);
  }

  ngOnInit() {
    this.route.data.subscribe((value) => {
      const data = value as { list: Account[]; accountTypes: AccountType[] };
      this.accountTypes = data.accountTypes;
      data.list.forEach((x) => (x.typeName = this.accountTypes.find((y) => y.id === x.type)?.name ?? ''));
      this.list = data.list;
    });
    this.dataSource = new AccountListDataSource(this.list, this.filter, this.paginator, this.sort);
  }

  ngAfterViewInit() {
    setTimeout(() => {
      this.filterElement.nativeElement.focus();
    }, 0);
  }
}