/**
 * 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/.
 */

import { SelectionModel } from '@angular/cdk/collections';
import { DecimalPipe, NgClass } from '@angular/common';
import { Component, Input, OnChanges, OnDestroy, OnInit, SimpleChanges, ViewChild, inject } from '@angular/core';
import { MatCheckboxChange as MatCheckboxChange, MatCheckbox } from '@angular/material/checkbox';
import { MatDialog } from '@angular/material/dialog';
import { formatTabLabel } from 'app/shared/utils/format-tab-label.util';
import {
  MatTable,
  MatColumnDef,
  MatHeaderCellDef,
  MatHeaderCell,
  MatCellDef,
  MatCell,
  MatHeaderRowDef,
  MatHeaderRow,
  MatRowDef,
  MatRow
} from '@angular/material/table';
import { ActivatedRoute } from '@angular/router';
import { MatCard, MatCardContent } from '@angular/material/card';
import { Datatables } from 'app/core/utils/datatables';
import { Dates } from 'app/core/utils/dates';
import { DateFormatPipe } from 'app/pipes/date-format.pipe';
import { DatetimeFormatPipe } from 'app/pipes/datetime-format.pipe';
import { SettingsService } from 'app/settings/settings.service';
import { DeleteDialogComponent } from 'app/shared/delete-dialog/delete-dialog.component';
import { FormDialogComponent } from 'app/shared/form-dialog/form-dialog.component';
import { FormfieldBase } from 'app/shared/form-dialog/formfield/model/formfield-base';
import { SystemService } from 'app/system/system.service';
import * as _ from 'lodash';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

@Component({
  selector: 'mifosx-datatable-multi-row',
  templateUrl: './datatable-multi-row.component.html',
  styleUrls: ['./datatable-multi-row.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    FaIconComponent,
    MatCard,
    MatCardContent,
    MatTable,
    MatColumnDef,
    MatHeaderCellDef,
    MatHeaderCell,
    MatCellDef,
    MatCell,
    MatCheckbox,
    NgClass,
    MatHeaderRowDef,
    MatHeaderRow,
    MatRowDef,
    MatRow
  ]
})
export class DatatableMultiRowComponent implements OnInit, OnDestroy, OnChanges {
  formatTabLabel(label: string): string {
    return formatTabLabel(label);
  }
  private route = inject(ActivatedRoute);
  private dateUtils = inject(Dates);
  private systemService = inject(SystemService);
  private settingsService = inject(SettingsService);
  private dialog = inject(MatDialog);
  private datatables = inject(Datatables);
  private dateFormat = inject(DateFormatPipe);
  private dateTimeFormat = inject(DatetimeFormatPipe);
  private numberFormat = inject(DecimalPipe);

  SELECT_NAME_FIELD = 'select';
  /** Data Object */
  @Input() dataObject: any;
  @Input() entityId: string;
  @Input() entityType: string;

  /** Data Table Name */
  datatableName: string;
  /** Data Table Columns */
  datatableColumns: string[] = [];
  /** Data Table Data */
  datatableData: any;

  /** Toggle button visibility */
  showDeleteBotton: boolean;
  /** Row Selection Data */
  selection: SelectionModel<any>;
  isSelected = false;
  isLoading = false;

  /** Data Table Reference */
  @ViewChild('dataTable') dataTableRef: MatTable<Element>;

  /**
   * Fetches data table name from route params.
   * subscription is required due to asynchronicity.
   */
  ngOnInit() {
    this.selection = new SelectionModel(true, []);
    this.route.params.subscribe((routeParams: any) => {
      this.datatableName = routeParams.datatableName;
    });
    this.setData();
    this.isSelected = false;
  }

  ngOnDestroy(): void {
    this.resetData();
  }

  ngOnChanges(changes: SimpleChanges): void {
    this.setData();
  }

  setData() {
    this.datatableColumns = [this.SELECT_NAME_FIELD];
    this.dataObject.columnHeaders.filter((columnHeader: any) => {
      if (!this.datatables.isEntityId(columnHeader.columnName)) {
        this.datatableColumns.push(columnHeader.columnName);
        return columnHeader;
      }
    });

    this.datatableData = this.dataObject.data;
    if (this.dataTableRef) {
      this.dataTableRef.renderRows();
    }
  }

  resetData() {
    this.datatableName = null;
    this.datatableColumns = null;
    this.datatableData = null;
  }

  getData() {
    this.isLoading = true;
    this.systemService.getEntityDatatable(this.entityId, this.datatableName).subscribe((dataObject: any) => {
      this.dataObject.data = dataObject.data;
      this.showDeleteBotton = false;
      if (this.dataTableRef) {
        this.setData();
      }
      this.isSelected = false;
      this.isLoading = false;
    });
  }

  /**
   * Adds a new row to the given multi row data table.
   */
  add() {
    let dataTableEntryObject: any = { locale: this.settingsService.language.code };
    const dateTransformColumns: string[] = [];
    const columns = this.datatables.filterSystemColumns(this.dataObject.columnHeaders);
    const formfields: FormfieldBase[] = this.datatables.getFormfields(
      columns,
      dateTransformColumns,
      dataTableEntryObject
    );
    const data = {
      title: 'Add ' + formatTabLabel(this.datatableName) + ' for ' + this.entityType,
      formfields: formfields
    };
    const addDialogRef = this.dialog.open(FormDialogComponent, { data, width: '50rem' });
    addDialogRef.afterClosed().subscribe((response: any) => {
      if (response.data) {
        dateTransformColumns.forEach((column) => {
          response.data.value[column] = this.dateUtils.formatDate(
            response.data.value[column],
            dataTableEntryObject.dateFormat
          );
        });
        dataTableEntryObject = { ...response.data.value, ...dataTableEntryObject };
        this.systemService
          .addEntityDatatableEntry(this.entityId, this.datatableName, dataTableEntryObject)
          .subscribe((result: any) => {
            this.getData();
          });
      }
    });
  }

  /**
   * Deletes all rows of the given multi row data table.
   */
  delete() {
    const deleteDataTableDialogRef = this.dialog.open(DeleteDialogComponent, {
      data: { deleteContext: `the contents of ${formatTabLabel(this.datatableName)}` }
    });
    deleteDataTableDialogRef.afterClosed().subscribe((response: any) => {
      if (response.delete) {
        this.systemService.deleteDatatableContent(this.entityId, this.datatableName).subscribe(() => {
          this.getData();
        });
      }
    });
  }

  /**
   * Deletes all rows of the given multi row data table.
   */
  deleteSelected() {
    const deleteDataTableDialogRef = this.dialog.open(DeleteDialogComponent, {
      data: {
        deleteContext: `the ${this.selection.selected.length} items selected of ${formatTabLabel(this.datatableName)}`
      }
    });
    deleteDataTableDialogRef.afterClosed().subscribe((response: any) => {
      if (response.delete) {
        this.isSelected = false;
        this.selection.selected.forEach((data) => {
          this.systemService.deleteDatatableEntry(this.entityId, data.row[0], this.datatableName).subscribe(() => {
            this.datatableData.forEach((item: any, index: any) => {
              if (item.row[0] === data.row[0]) {
                this.datatableData.splice(index, 1);
                this.dataTableRef.renderRows();
                this.selection = new SelectionModel(true, []);
                this.isSelected = this.selection.selected.length > 0;
              }
            });
          });
        });
      } else {
        this.selection = new SelectionModel(true, []);
        this.isSelected = this.selection.selected.length > 0;
      }
    });
  }

  formatValue(data: any, columnName: string): any {
    let value: any = '';
    if (this.dataObject.columnHeaders) {
      let idx = 0;
      this.dataObject.columnHeaders.some((columnHeader: any) => {
        if (columnHeader.columnName === columnName) {
          const columnDisplayType = columnHeader.columnDisplayType;
          value = data.row[idx];
          if (columnDisplayType === 'DATE') {
            value = this.dateFormat.transform(value);
          } else if (columnDisplayType === 'DATETIME') {
            value = this.dateTimeFormat.transform(value);
          } else if (columnDisplayType === 'INTEGER' || columnDisplayType === 'DECIMAL') {
            if (typeof value === 'number') {
              value = this.numberFormat.transform(value);
            }
          } else if (columnDisplayType === 'CODELOOKUP') {
            if (columnHeader.columnValues && value !== null && value !== undefined) {
              const codeValue = columnHeader.columnValues.find((cv: any) => cv.id === value);
              value = codeValue ? codeValue.value : value;
            }
          }
          return true;
        }
        idx += 1;
      });
    }
    return value;
  }

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

  isAnySelected() {
    return this.selection.selected && this.selection.selected.length > 0;
  }

  /** Selects all rows if they are not all selected; otherwise clear selection. */
  masterToggle(change: MatCheckboxChange): void {
    if (change.checked) {
      this.datatableData.forEach((row: any) => this.selection.select(row));
    } else {
      this.selection = new SelectionModel(true, []);
    }
    this.isSelected = this.selection.selected.length > 0;
  }

  itemToggle(data: any): void {
    this.selection.toggle(data);
    this.isSelected = this.selection.selected.length > 0;
  }

  /** 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}`;
  }

  isToDelete(data: any): string {
    if (this.selection.isSelected(data)) {
      return 'tobe-deleted';
    }
    return '';
  }

  getInputName(attr: string): string {
    return this.datatables.getName(attr);
  }
}