import { DecimalPipe, CurrencyPipe, AsyncPipe } from '@angular/common';
import { Component, ElementRef, OnInit, ViewChild } from '@angular/core';
import { FormGroup, FormArray, FormControl, ReactiveFormsModule, Validators } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { MatCardModule } from '@angular/material/card';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatBadgeModule } from '@angular/material/badge';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatIconModule } from '@angular/material/icon';
import { MatInputModule } from '@angular/material/input';
import { MatPaginator, MatPaginatorModule } from '@angular/material/paginator';
import { MatTableModule } from '@angular/material/table';
import { ActivatedRoute, Router } from '@angular/router';
import moment from 'moment';

import { AuthService } from '../auth/auth.service';
import { MatSnackBar } from '@angular/material/snack-bar';
import { ToCsvService } from '../shared/to-csv.service';

import { MozimoDailyRegister } from './mozimo-daily-register';
import { MozimoDailyRegisterDataSource } from './mozimo-daily-register-datasource';
import { MozimoDailyRegisterItem } from './mozimo-daily-register-item';
import { MozimoDailyRegisterService } from './mozimo-daily-register.service';
import { MatAutocompleteModule } from '@angular/material/autocomplete';
import { BehaviorSubject } from 'rxjs';
import { LocalTimePipe } from '../shared/local-time.pipe';
import { MatTooltipModule } from '@angular/material/tooltip';

@Component({
  selector: 'app-mozimo-daily-register',
  templateUrl: './mozimo-daily-register.component.html',
  styleUrls: ['./mozimo-daily-register.component.css'],
  standalone: true,
  imports: [
    AsyncPipe,
    CurrencyPipe,
    DecimalPipe,
    LocalTimePipe,
    MatAutocompleteModule,
    MatBadgeModule,
    MatButtonModule,
    MatCardModule,
    MatDatepickerModule,
    MatFormFieldModule,
    MatIconModule,
    MatInputModule,
    MatPaginatorModule,
    MatTableModule,
    MatTooltipModule,
    ReactiveFormsModule,
  ],
  providers: [LocalTimePipe],
})
export class MozimoDailyRegisterComponent implements OnInit {
  @ViewChild('dateElement', { static: false }) dateElement!: ElementRef<HTMLInputElement>;
  @ViewChild(MatPaginator, { static: true }) paginator!: MatPaginator;
  info: MozimoDailyRegister = new MozimoDailyRegister();
  body = new BehaviorSubject<MozimoDailyRegisterItem[]>([]);
  dataSource: MozimoDailyRegisterDataSource = new MozimoDailyRegisterDataSource(this.body);

  form: FormGroup<{
    date: FormControl<Date>;
    items: FormArray<
      FormGroup<{
        received: FormControl<number>;
        sale: FormControl<number>;
        nc: FormControl<number>;
        display: FormControl<number | null>;
        ageing: FormControl<number | null>;
      }>
    >;
  }>;
  /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */

  displayedColumns = ['product', 'opening', 'received', 'sale', 'nc', 'display', 'ageing', 'variance', 'closing'];

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private toCsv: ToCsvService,
    private localTimePipe: LocalTimePipe,
    private snackBar: MatSnackBar,
    public auth: AuthService,
    private ser: MozimoDailyRegisterService,
  ) {
    this.form = new FormGroup({
      date: new FormControl(new Date(), { nonNullable: true }),
      items: new FormArray<
        FormGroup<{
          received: FormControl<number>;
          sale: FormControl<number>;
          nc: FormControl<number>;
          display: FormControl<number | null>;
          ageing: FormControl<number | null>;
        }>
      >([]),
    });
  }

  ngOnInit() {
    this.route.data.subscribe((value) => {
      const data = value as { info: MozimoDailyRegister };
      this.info = data.info;
      this.form.patchValue({
        date: moment(this.info.date, 'DD-MMM-YYYY').toDate(),
      });
      this.form.controls.items.clear();
      this.info.body.forEach((x) =>
        this.form.controls.items.push(
          new FormGroup({
            received: new FormControl(x.received, { nonNullable: true, validators: [Validators.min(0)] }),
            sale: new FormControl(x.sale, { nonNullable: true, validators: [Validators.min(0)] }),
            nc: new FormControl(x.nc, { nonNullable: true, validators: [Validators.min(0)] }),
            display: new FormControl(x.display, { nonNullable: false, validators: [Validators.min(0)] }),
            ageing: new FormControl(x.ageing, { nonNullable: false, validators: [Validators.min(0)] }),
          }),
        ),
      );
      if (!this.dataSource.paginator) {
        this.dataSource.paginator = this.paginator;
      }
      this.body.next(this.info.body);
    });
  }

  show() {
    const date = moment(this.form.value.date).format('DD-MMM-YYYY');
    this.router.navigate(['/mozimo-daily-register', date]);
  }

  save() {
    this.ser.save(this.getMozimoDailyRegister()).subscribe({
      next: () => {
        this.snackBar.open('', 'Success');
      },
      error: (error) => {
        this.snackBar.open(error, 'Danger');
      },
    });
  }

  getMozimoDailyRegister(): MozimoDailyRegister {
    const formModel = this.form.value;
    this.info.date = moment(formModel.date).format('DD-MMM-YYYY');

    const array = this.form.controls.items;
    this.info.body.forEach((item, index) => {
      item.received = +(array.controls[index].value.received ?? 0);
      item.sale = +(array.controls[index].value.sale ?? 0);
      item.nc = +(array.controls[index].value.nc ?? 0);
      const display = array.controls[index].value.display ?? null;
      const ageing = array.controls[index].value.ageing ?? null;
      item.display = display == null ? null : +display;
      item.ageing = ageing == null ? null : +ageing;
    });
    return this.info;
  }

  exportCsv() {
    const headers = {
      Product: 'product',
      Opening: 'opening',
      Received: 'received',
      Sale: 'sale',
      Nc: 'nc',
      Display: 'display',
      Ageing: 'ageing',
      Variance: 'variance',
      Closing: 'closing',
      'Last Edit Date': 'lastEditDate',
    };
    const d = JSON.parse(JSON.stringify(this.dataSource.data)).map((x: MozimoDailyRegisterItem) => ({
      id: x.id,
      product: x.product.name,
      opening: x.opening,
      received: x.received,
      sale: x.sale,
      nc: x.nc,
      display: x.display,
      ageing: x.ageing,
      variance: x.variance,
      closing: x.closing,
      lastEditDate: x.lastEditDate ? this.localTimePipe.transform(x.lastEditDate ?? '') : 'Unsaved',
    }));

    const csvData = new Blob([this.toCsv.toCsv(headers, d)], {
      type: 'text/csv;charset=utf-8;',
    });
    const link = document.createElement('a');
    link.href = window.URL.createObjectURL(csvData);
    link.setAttribute('download', 'mozimo-product-register.csv');
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
  }

  updateReceived($event: Event, row: MozimoDailyRegisterItem) {
    row.received = +($event.target as HTMLInputElement).value;
    this.body.next(this.info.body);
  }

  updateSale($event: Event, row: MozimoDailyRegisterItem) {
    row.sale = +($event.target as HTMLInputElement).value;
    this.body.next(this.info.body);
  }

  updateNc($event: Event, row: MozimoDailyRegisterItem) {
    row.nc = +($event.target as HTMLInputElement).value;
    this.body.next(this.info.body);
  }

  updateDisplay($event: Event, row: MozimoDailyRegisterItem) {
    const val = ($event.target as HTMLInputElement).value;
    row.display = val === '' ? null : +val;
    this.body.next(this.info.body);
  }

  updateAgeing($event: Event, row: MozimoDailyRegisterItem) {
    const val = ($event.target as HTMLInputElement).value;
    row.ageing = val === '' ? null : +val;
    this.body.next(this.info.body);
  }
}