import { CurrencyPipe } from '@angular/common';
import { Component, OnInit, inject } from '@angular/core';
import { FormControl, FormGroup, ReactiveFormsModule } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { MatOptionModule } from '@angular/material/core';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatIconModule } from '@angular/material/icon';
import { MatInputModule } from '@angular/material/input';
import { MatSelectModule } from '@angular/material/select';
import { MatSnackBar } from '@angular/material/snack-bar';
import { MatTableModule } from '@angular/material/table';
import { ActivatedRoute, Router } from '@angular/router';
import moment from 'moment';

import { User } from '../core/user';
import { ToCsvService } from '../shared/to-csv.service';
import { CashierReport } from './cashier-report';
import { CashierReportDataSource } from './cashier-report-datasource';
import { CashierReportService } from './cashier-report.service';

@Component({
  selector: 'app-cashier-report',
  templateUrl: './cashier-report.component.html',
  styleUrls: ['./cashier-report.component.sass'],
  imports: [
    CurrencyPipe,
    MatButtonModule,

    MatDatepickerModule,
    MatFormFieldModule,
    MatIconModule,
    MatInputModule,
    MatOptionModule,
    MatSelectModule,
    MatTableModule,
    ReactiveFormsModule,
  ],
})
export class CashierReportComponent implements OnInit {
  private route = inject(ActivatedRoute);
  private router = inject(Router);
  private toCsv = inject(ToCsvService);
  private snackBar = inject(MatSnackBar);
  private ser = inject(CashierReportService);

  activeCashiers: User[] = [];
  info: CashierReport = new CashierReport();
  dataSource: CashierReportDataSource = new CashierReportDataSource(this.info.amounts);
  form: FormGroup<{
    startDate: FormControl<Date>;
    finishDate: FormControl<Date>;
    cashier: FormControl<string | null>;
  }>;

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

  constructor() {
    // Create form
    this.form = new FormGroup({
      startDate: new FormControl(new Date(), { nonNullable: true }),
      finishDate: new FormControl(new Date(), { nonNullable: true }),
      cashier: new FormControl<string | null>(null),
    });
  }

  ngOnInit() {
    this.route.data.subscribe((value) => {
      const data = value as { cashiers: User[]; info: CashierReport };
      this.activeCashiers = data.cashiers;
      this.info = data.info;
      this.form.setValue({
        cashier: this.info.cashier.id ?? '',
        startDate: moment(this.info.startDate, 'DD-MMM-YYYY').toDate(),
        finishDate: moment(this.info.finishDate, 'DD-MMM-YYYY').toDate(),
      });
      this.dataSource = new CashierReportDataSource(this.info.amounts);
    });
  }

  show() {
    const info = this.getInfo();
    const url = ['cashier-report'];
    if (info.cashier.id) {
      url.push(info.cashier.id);
    }
    this.router.navigate(url, {
      queryParams: {
        startDate: info.startDate,
        finishDate: info.finishDate,
      },
    });
  }

  print() {
    this.ser.print(this.info.cashier.id as string, this.info.startDate, this.info.finishDate).subscribe({
      next: () => {
        this.snackBar.open('Successfully Printed', '');
      },
      error: (error) => {
        this.snackBar.open(error, 'Error');
      },
    });
  }

  getInfo(): CashierReport {
    const formModel = this.form.value;

    return new CashierReport({
      cashier: new User({ id: formModel.cashier ?? undefined }),
      cashiers: this.info.cashiers,
      startDate: moment(formModel.startDate).format('DD-MMM-YYYY'),
      finishDate: moment(formModel.finishDate).format('DD-MMM-YYYY'),
    });
  }

  exportCsv() {
    const headers = {
      Name: 'name',
      Amount: 'amount',
    };
    const csvData = new Blob([this.toCsv.toCsv(headers, this.dataSource.data)], {
      type: 'text/csv;charset=utf-8;',
    });
    const link = document.createElement('a');
    link.href = window.URL.createObjectURL(csvData);
    link.setAttribute('download', 'cashier-report.csv');
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
  }
}