/**
 * 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 { ActivatedRoute, Router, RouterLink } from '@angular/router';
import { SelectionModel } from '@angular/cdk/collections';
import { UntypedFormBuilder, UntypedFormGroup, ReactiveFormsModule } from '@angular/forms';
import {
  MatTableDataSource,
  MatTable,
  MatColumnDef,
  MatHeaderCellDef,
  MatHeaderCell,
  MatCellDef,
  MatCell,
  MatHeaderRowDef,
  MatHeaderRow,
  MatRowDef,
  MatRow
} from '@angular/material/table';
import { MatDialog } from '@angular/material/dialog';
import { MatIcon } from '@angular/material/icon';

/** Custom Services */
import { TasksService } from '../../tasks.service';
import { SettingsService } from 'app/settings/settings.service';

/** Dialog Components */
import { ConfirmationDialogComponent } from 'app/shared/confirmation-dialog/confirmation-dialog.component';
import { Dates } from 'app/core/utils/dates';
import { TranslateService } from '@ngx-translate/core';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { MatCheckbox } from '@angular/material/checkbox';
import { DateFormatPipe } from '../../../pipes/date-format.pipe';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

@Component({
  selector: 'mifosx-checker-inbox',
  templateUrl: './checker-inbox.component.html',
  styleUrls: ['./checker-inbox.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    FaIconComponent,
    MatTable,
    MatColumnDef,
    MatHeaderCellDef,
    MatHeaderCell,
    MatCheckbox,
    MatCellDef,
    MatCell,
    MatHeaderRowDef,
    MatHeaderRow,
    MatRowDef,
    MatRow,
    DateFormatPipe,
    MatIcon
  ]
})
export class CheckerInboxComponent implements OnInit {
  private route = inject(ActivatedRoute);
  private dialog = inject(MatDialog);
  private dateUtils = inject(Dates);
  private router = inject(Router);
  private translateService = inject(TranslateService);
  private tasksService = inject(TasksService);
  private settingsService = inject(SettingsService);
  private formBuilder = inject(UntypedFormBuilder);

  /** Data to be displayed */
  searchData: any;
  /** Maker Checker Template */
  makerCheckerTemplate: any;
  /** Checks if there is any data based on the search */
  noSearchedData = false;
  /** Checks if there is any checker data */
  checkerData = false;
  /** Show/hide advanced search form */
  showAdvancedSearch = false;
  /** Maker Checker Search Form */
  makerCheckerSearchForm: UntypedFormGroup;
  /** Minimum date allowed. */
  minDate = new Date(2000, 0, 1);
  /** Maximum date allowed. */
  maxDate = new Date(2100, 0, 1);
  /** DataSource */
  dataSource: MatTableDataSource<any>;
  /** Selecting rows from table */
  selection: SelectionModel<any>;
  /** Displayed Column in table */
  displayedColumns: string[] = [
    'select',
    'id',
    'madeOnDate',
    'status',
    'user',
    'action',
    'entity'
  ];

  /**
   * Entities whose pending edits are gated by our own custom staging tables (m_savings_product_temp
   * for products, the savings account edit-request table for Nominee/Digital-Feature edits) rather
   * than the native command-source pipeline. They're excluded from Checker Inbox entirely -
   * approving/rejecting them here would call the native /makercheckers/{id}?command=approve endpoint,
   * which replays the original command handler directly and never touches our staging table, leaving
   * its lock/hold stuck forever. Action them from Approvals -> Pending Product Edits / Pending Account
   * Edits instead, where that's handled correctly.
   */
  private readonly productEditEntities = [
    'SAVINGSPRODUCT',
    'CURRENTPRODUCT',
    'SHAREPRODUCT',
    'FIXEDDEPOSITPRODUCT',
    'RECURRINGDEPOSITPRODUCT',
    'SAVINGSACCOUNT',
    'CURRENTACCOUNT'
  ];

  private excludeProductEdits(items: any[]): any[] {
    return (items || []).filter(
      (item: any) => !(this.productEditEntities.includes(item?.entityName) && item?.actionName === 'UPDATE')
    );
  }

  /**
   * Retrieves the maker checker data from `resolve`.
   * @param {ActivatedRoute} route Activated Route.
   * @param {Dialog} dialog MatDialog.
   * @param {Dates} dateUtils Date Utils.
   * @param {router} router Router.
   * @param {SettingsService} settingsService Settings Service.
   * @param {TasksService} tasksService Tasks Service.
   * @param {FormBuilder} formBuilder Form Builder.
   */
  constructor() {
    this.route.data.subscribe((data: { makerCheckerResource: any; makerCheckerTemplate: any }) => {
      const raw = data.makerCheckerResource;
      this.searchData = this.excludeProductEdits(Array.isArray(raw) ? raw : (raw?.pageItems ?? []));
      this.checkerData = this.searchData.length > 0;
      this.makerCheckerTemplate = data.makerCheckerTemplate ?? {};
      this.dataSource = new MatTableDataSource(this.searchData);
      this.selection = new SelectionModel(true, []);
    });
  }

  ngOnInit() {
    this.createMakerCheckerSearchForm();
  }

  /**
   * Creates the standing instruction form.
   */
  createMakerCheckerSearchForm() {
    this.makerCheckerSearchForm = this.formBuilder.group({
      makerDateTimeFrom: [''],
      makerDateTimeto: [''],
      actionName: [''],
      entityName: [''],
      resourceId: ['']
    });
  }

  /**
   * Toggle advanced search form visibility.
   */
  toggleAdvancedSearch() {
    this.showAdvancedSearch = !this.showAdvancedSearch;
  }

  search() {
    const dateFormat = this.settingsService.dateFormat;
    const makerCheckerSearchParams = {
      ...this.makerCheckerSearchForm.value,
      makerDateTimeFrom: this.dateUtils.formatDate(this.makerCheckerSearchForm.value.makerDateTimeFrom, dateFormat),
      makerDateTimeto: this.dateUtils.formatDate(this.makerCheckerSearchForm.value.makerDateTimeto, dateFormat)
    };
    this.tasksService.getMakerCheckerData(makerCheckerSearchParams).subscribe((response: any) => {
      this.searchData = this.excludeProductEdits(response);
      if (this.searchData.length === 0) {
        this.noSearchedData = true;
      } else {
        this.noSearchedData = false;
      }
      this.dataSource = new MatTableDataSource(this.searchData);
      this.selection = new SelectionModel(true, []);
    });
  }

  /** Whether the number of selected elements matches the total number of rows. */
  isAllSelected() {
    const numSelected = this.selection.selected.length;
    const numRows = this.dataSource.data.length;
    return numSelected === numRows;
  }

  /** Selects all rows if they are not all selected; otherwise clear selection. */
  masterToggle() {
    this.isAllSelected()
      ? this.selection.clear()
      : this.dataSource.data.forEach((row: any) => this.selection.select(row));
  }

  /** The label for the checkbox on the passed row */
  checkboxLabel(row?: any): string {
    if (!row) {
      return `${this.isAllSelected() ? 'select' : 'deselect'} all`;
    }
    return `${this.selection.isSelected(row) ? 'deselect' : 'select'} row ${row.position + 1}`;
  }

  approveChecker() {
    const approveCheckerDialogRef = this.dialog.open(ConfirmationDialogComponent, {
      data: {
        heading: this.translateService.instant('labels.heading.Approve Checker'),
        dialogContext: this.translateService.instant('labels.dialogContext.Are you sure you want to approve checker')
      }
    });
    approveCheckerDialogRef.afterClosed().subscribe((response: { confirm: any }) => {
      if (response.confirm) {
        this.bulkCheckerApproveorReject('approve');
      }
    });
  }

  rejectChecker() {
    const rejectCheckerDialogRef = this.dialog.open(ConfirmationDialogComponent, {
      data: {
        heading: this.translateService.instant('labels.heading.Reject Checker'),
        dialogContext: this.translateService.instant('labels.dialogContext.Are you sure you want to reject checker')
      }
    });
    rejectCheckerDialogRef.afterClosed().subscribe((response: { confirm: any }) => {
      if (response.confirm) {
        this.bulkCheckerApproveorReject('reject');
      }
    });
  }

  deleteChecker() {
    const deleteCheckerDialogRef = this.dialog.open(ConfirmationDialogComponent, {
      data: {
        heading: this.translateService.instant('labels.heading.Delete Checker'),
        dialogContext: this.translateService.instant('labels.dialogContext.Are you sure you want to delete checker')
      }
    });
    deleteCheckerDialogRef.afterClosed().subscribe((response: { confirm: any }) => {
      if (response.confirm) {
        this.bulkDeleteChecker();
      }
    });
  }

  bulkCheckerApproveorReject(action: any) {
    const selectedAccounts = this.selection.selected.length;
    const listSelectedAccounts = this.selection.selected;
    let approvedAccounts = 0;
    listSelectedAccounts.forEach((element: any) => {
      this.tasksService.executeMakerCheckerAction(element.id, action).subscribe((response: any) => {
        approvedAccounts++;
        if (selectedAccounts === approvedAccounts) {
          this.reload();
        }
      });
    });
  }

  bulkDeleteChecker() {
    const selectedAccounts = this.selection.selected.length;
    const listSelectedAccounts = this.selection.selected;
    let approvedAccounts = 0;
    listSelectedAccounts.forEach((element: any) => {
      this.tasksService.deleteMakerChecker(element.id).subscribe((response: any) => {
        approvedAccounts++;
        if (selectedAccounts === approvedAccounts) {
          this.reload();
        }
      });
    });
  }

  applyFilter(filterValue: string = '') {
    this.dataSource.filter = filterValue.trim().toLowerCase();
  }

  /**
   * Refetches data for the component
   * TODO: Replace by a custom reload component instead of hard-coded back-routing.
   */
  reload() {
    const url: string = this.router.url;
    this.router
      .navigateByUrl(`/checker-inbox-and-tasks`, { skipLocationChange: true })
      .then(() => this.router.navigate([url]));
  }
}