import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup } from '@angular/forms';
import { ActivatedRoute, Router } from '@angular/router';
import * as moment from 'moment';

import { ToasterService } from '../core/toaster.service';
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.css'],
})
export class CashierReportComponent implements OnInit {
  dataSource: CashierReportDataSource;
  form: FormGroup;
  activeCashiers: User[];
  info: CashierReport;

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

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private fb: FormBuilder,
    private toCsv: ToCsvService,
    private toaster: ToasterService,
    private ser: CashierReportService,
  ) {
    this.createForm();
  }

  ngOnInit() {
    this.route.data.subscribe((data: { 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, this.info.startDate, this.info.finishDate).subscribe(
      () => {
        this.toaster.show('', 'Successfully Printed');
      },
      (error) => {
        this.toaster.show('Error', error.error);
      },
    );
  }

  createForm() {
    this.form = this.fb.group({
      startDate: '',
      finishDate: '',
      cashier: '',
    });
  }

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

    return {
      cashier: new User({ id: formModel.cashier }),
      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);
  }
}