/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/** Angular Imports */
import { Component, OnInit, inject } from '@angular/core';
import { UntypedFormBuilder, UntypedFormGroup, Validators } from '@angular/forms';
import { RouterLink } from '@angular/router';
import { MatIconModule } from '@angular/material/icon';
import { MatButtonModule } from '@angular/material/button';
import { MatTableModule } from '@angular/material/table';
import { MatPaginatorModule, PageEvent } from '@angular/material/paginator';
import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
import { MatDialog } from '@angular/material/dialog';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

/** Custom Services */
import { ChequeBookService } from '../chequebook.service';
import { DeleteDialogComponent } from 'app/shared/delete-dialog/delete-dialog.component';

/** Cheque-leaf stationery master — leaves per book, CTS-2010 compliance, low-stock reorder threshold. */
@Component({
  selector: 'mifosx-cheque-series',
  templateUrl: './cheque-series.component.html',
  styleUrls: ['./cheque-series.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    RouterLink,
    MatIconModule,
    MatButtonModule,
    MatTableModule,
    MatPaginatorModule,
    MatSnackBarModule,
    FaIconComponent
  ]
})
export class ChequeSeriesComponent implements OnInit {
  private formBuilder = inject(UntypedFormBuilder);
  private chequeBookService = inject(ChequeBookService);
  private dialog = inject(MatDialog);
  private snackBar = inject(MatSnackBar);

  private notify(message: string, isError = false): void {
    this.snackBar.open(message, 'Dismiss', { duration: isError ? 6000 : 3000 });
  }

  seriesList: any[] = [];
  showForm = false;
  busy = false;

  statusFilter = '';
  pageSize = 10;
  pageIndex = 0;
  totalRecords = 0;
  pageSizeOptions = [
    10,
    25,
    50,
    100
  ];

  seriesForm: UntypedFormGroup;

  columns = [
    'seriesCode',
    'name',
    'leavesPerBook',
    'applicableAccountType',
    'ctsCompliant',
    'reorderLevel',
    'active',
    'actions'
  ];

  constructor() {
    this.seriesForm = this.formBuilder.group({
      seriesCode: [
        '',
        Validators.required
      ],
      name: [
        '',
        Validators.required
      ],
      leavesPerBook: [
        25,
        Validators.required
      ],
      applicableAccountType: [
        '',
        Validators.required
      ],
      ctsCompliant: [true],
      reorderLevel: [10]
    });
  }

  ngOnInit(): void {
    this.loadSeries();
  }

  loadSeries(): void {
    this.chequeBookService
      .getSeries(this.statusFilter || undefined, this.pageIndex * this.pageSize, this.pageSize)
      .subscribe((res: any) => {
        this.seriesList = res?.pageItems ?? [];
        this.totalRecords = Number(res?.totalFilteredRecords ?? 0);
      });
  }

  filterByStatus(status: string): void {
    this.statusFilter = this.statusFilter === status ? '' : status;
    this.pageIndex = 0;
    this.loadSeries();
  }

  onPageChange(event: PageEvent): void {
    this.pageSize = event.pageSize;
    this.pageIndex = event.pageIndex;
    this.loadSeries();
  }

  submit(): void {
    if (this.seriesForm.invalid || this.busy) {
      return;
    }
    this.busy = true;
    const raw = this.seriesForm.value;
    const payload: any = {
      seriesCode: raw.seriesCode,
      name: raw.name,
      leavesPerBook: raw.leavesPerBook,
      applicableAccountType: raw.applicableAccountType,
      ctsCompliant: !!raw.ctsCompliant,
      locale: 'en'
    };
    if (raw.reorderLevel !== '' && raw.reorderLevel != null) payload.reorderLevel = raw.reorderLevel;

    this.chequeBookService.createSeries(payload).subscribe({
      next: () => {
        this.busy = false;
        this.showForm = false;
        this.seriesForm.reset({ leavesPerBook: 25, applicableAccountType: '', ctsCompliant: true, reorderLevel: 10 });
        this.notify('Submitted for approval — see Approvals > Cheque Book Requests');
        this.loadSeries();
      },
      error: () => {
        this.busy = false;
        this.notify('Failed to add cheque series', true);
      }
    });
  }

  deactivate(series: any): void {
    const dialogRef = this.dialog.open(DeleteDialogComponent, {
      data: { deleteContext: `cheque series ${series.seriesCode}` }
    });
    dialogRef.afterClosed().subscribe((response: any) => {
      if (!response?.delete) {
        return;
      }
      this.chequeBookService.deactivateSeries(series.id).subscribe({
        next: () => {
          this.notify('Submitted for approval — see Approvals > Cheque Book Requests');
          this.loadSeries();
        },
        error: () => this.notify('Failed to submit for approval', true)
      });
    });
  }
}