import { AfterViewInit, Component, ElementRef, OnInit, ViewChild } from '@angular/core';
import { FormBuilder, FormControl, FormGroup } from '@angular/forms';
import { MatDialog } from '@angular/material/dialog';
import { ActivatedRoute, Router } from '@angular/router';
import * as moment from 'moment';

import { CostCentre } from '../../core/cost-centre';
import { ToasterService } from '../../core/toaster.service';
import { ConfirmDialogComponent } from '../../shared/confirm-dialog/confirm-dialog.component';
import { Employee } from '../employee';
import { EmployeeService } from '../employee.service';

@Component({
  selector: 'app-employee-detail',
  templateUrl: './employee-detail.component.html',
  styleUrls: ['./employee-detail.component.css'],
})
export class EmployeeDetailComponent implements OnInit, AfterViewInit {
  @ViewChild('nameElement', { static: true }) nameElement?: ElementRef;
  form: FormGroup;
  costCentres: CostCentre[] = [];
  item: Employee = new Employee();

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private dialog: MatDialog,
    private fb: FormBuilder,
    private toaster: ToasterService,
    private ser: EmployeeService,
  ) {
    this.form = this.fb.group({
      code: { value: '', disabled: true },
      name: '',
      designation: '',
      salary: '',
      points: '',
      isActive: '',
      costCentre: '',
      joiningDate: '',
      leavingDate: '',
    });
    // Listen to IsActive Changes
    (this.form.get('isActive') as FormControl).valueChanges.subscribe((x) => {
      this.item.isActive = x;
    });
  }

  ngOnInit() {
    this.route.data.subscribe((value) => {
      const data = value as { item: Employee; costCentres: CostCentre[] };

      this.costCentres = data.costCentres;
      this.showItem(data.item);
    });
  }

  showItem(item: Employee) {
    this.item = item;
    this.form.setValue({
      code: this.item.code || '(Auto)',
      name: this.item.name || '',
      designation: this.item.designation || '',
      salary: this.item.salary || '',
      points: this.item.points || '',
      isActive: this.item.isActive,
      costCentre: this.item.costCentre.id,
      joiningDate: this.item.joiningDate
        ? moment(this.item.joiningDate, 'DD-MMM-YYYY').toDate()
        : '',
      leavingDate: this.item.isActive
        ? null
        : moment(this.item.leavingDate, 'DD-MMM-YYYY').toDate(),
    });
  }

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

  save() {
    this.ser.saveOrUpdate(this.getItem()).subscribe(
      () => {
        this.toaster.show('Success', '');
        this.router.navigateByUrl('/employees');
      },
      (error) => {
        this.toaster.show('Danger', error);
      },
    );
  }

  delete() {
    this.ser.delete(this.item.id as string).subscribe(
      () => {
        this.toaster.show('Success', '');
        this.router.navigateByUrl('/employees');
      },
      (error) => {
        this.toaster.show('Danger', error);
      },
    );
  }

  confirmDelete(): void {
    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '250px',
      data: { title: 'Delete Employee?', content: 'Are you sure? This cannot be undone.' },
    });

    dialogRef.afterClosed().subscribe((result: boolean) => {
      if (result) {
        this.delete();
      }
    });
  }

  getItem(): Employee {
    const formModel = this.form.value;
    this.item.name = formModel.name;
    this.item.designation = formModel.designation;
    this.item.salary = +formModel.salary;
    this.item.points = +formModel.points;
    this.item.isActive = formModel.isActive;
    this.item.costCentre.id = formModel.costCentre;
    this.item.joiningDate = moment(formModel.joiningDate).format('DD-MMM-YYYY');
    this.item.leavingDate = this.item.isActive
      ? null
      : moment(formModel.leavingDate).format('DD-MMM-YYYY');
    return this.item;
  }
}