import { DecimalPipe } from '@angular/common';
import { Component, OnInit } from '@angular/core';
import { FormControl, FormGroup, ReactiveFormsModule } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { MatCardModule } from '@angular/material/card';
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 { MatTableModule } from '@angular/material/table';
import { ActivatedRoute, Router } from '@angular/router';
import moment from 'moment';

import { Section } from '../core/section';
import { ToasterService } from '../core/toaster.service';
import { ToCsvService } from '../shared/to-csv.service';

import { ProductSaleReport } from './product-sale-report';
import { ProductSaleReportDataSource } from './product-sale-report-datasource';
import { ProductSaleReportService } from './product-sale-report.service';

@Component({
  selector: 'app-product-sale-report',
  templateUrl: './product-sale-report.component.html',
  styleUrls: ['./product-sale-report.component.css'],
  imports: [
    MatCardModule,
    MatButtonModule,
    ReactiveFormsModule,
    MatFormFieldModule,
    MatInputModule,
    MatIconModule,
    MatDatepickerModule,
    MatTableModule,
    MatSelectModule,
    DecimalPipe,
  ],
})
export class ProductSaleReportComponent implements OnInit {
  sections: Section[] = [];
  info: ProductSaleReport = new ProductSaleReport();
  dataSource: ProductSaleReportDataSource = new ProductSaleReportDataSource(this.info.amounts);
  form: FormGroup<{
    startDate: FormControl<Date>;
    finishDate: FormControl<Date>;
    section: FormControl<string | null>;
  }>;

  /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
  displayedColumns = ['name', 'unbilled', 'sale', 'noCharge', 'staff', 'cancel'];

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private toCsv: ToCsvService,
    private toaster: ToasterService,
    private ser: ProductSaleReportService,
  ) {
    // Create form
    this.form = new FormGroup({
      startDate: new FormControl(new Date(), { nonNullable: true }),
      finishDate: new FormControl(new Date(), { nonNullable: true }),
      section: new FormControl<string | null>(null),
    });
  }

  ngOnInit() {
    this.route.data.subscribe((value) => {
      const data = value as { sections: Section[]; info: ProductSaleReport };
      this.sections = data.sections;
      this.info = data.info;
      this.form.setValue({
        startDate: moment(this.info.startDate, 'DD-MMM-YYYY').toDate(),
        finishDate: moment(this.info.finishDate, 'DD-MMM-YYYY').toDate(),
        section: this.info.sectionId || null,
      });
      this.dataSource = new ProductSaleReportDataSource(this.info.amounts);
    });
  }

  show() {
    const info = this.getInfo();
    const params = {
      startDate: info.startDate,
      finishDate: info.finishDate,
    } as { startDate: string; finishDate: string; section?: string };
    if (info.sectionId) {
      params['section'] = info.sectionId;
    }
    this.router.navigate(['product-sale-report'], {
      queryParams: params,
    });
  }

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

    const data = new ProductSaleReport({
      startDate: moment(formModel.startDate).format('DD-MMM-YYYY'),
      finishDate: moment(formModel.finishDate).format('DD-MMM-YYYY'),
    });
    if (formModel.section) {
      data.sectionId = formModel.section;
    }
    return data;
  }

  print() {
    this.ser.print(this.info.startDate, this.info.finishDate, this.info.sectionId).subscribe({
      next: () => {
        this.toaster.show('', 'Successfully Printed');
      },
      error: (error) => {
        this.toaster.show('Error', error);
      },
    });
  }

  exportCsv() {
    const headers = {
      Name: 'name',
      Unbilled: 'kot',
      Sold: 'regularBill',
      'No Charge': 'noCharge',
      Staff: 'staff',
      Void: 'void',
    };
    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', 'product-sale-report.csv');
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
  }
}