/**
 * 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, ViewChild, inject } from '@angular/core';
import { ActivatedRoute, RouterLink } from '@angular/router';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort, MatSortHeader } from '@angular/material/sort';
import {
  MatTableDataSource,
  MatTable,
  MatColumnDef,
  MatHeaderCellDef,
  MatHeaderCell,
  MatCellDef,
  MatCell,
  MatHeaderRowDef,
  MatHeaderRow,
  MatRowDef,
  MatRow
} from '@angular/material/table';
import { DatetimeFormatPipe } from '../../../pipes/datetime-format.pipe';
import { TranslatePipe } from '../../../pipes/translate.pipe';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

/**
 * View Audit Component.
 */
@Component({
  selector: 'mifosx-view-audit',
  templateUrl: './view-audit.component.html',
  styleUrls: ['./view-audit.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    MatTable,
    MatSort,
    MatColumnDef,
    MatHeaderCellDef,
    MatHeaderCell,
    MatSortHeader,
    MatCellDef,
    MatCell,
    MatHeaderRowDef,
    MatHeaderRow,
    MatRowDef,
    MatRow,
    DatetimeFormatPipe,
    TranslatePipe
  ]
})
export class ViewAuditComponent implements OnInit {
  private route = inject(ActivatedRoute);

  /** Audit Trail Data. */
  auditTrailData: any;
  /** Columns to be displayed in audit trail table. */
  displayedColumns: string[] = [
    'command',
    'commandValue'
  ];
  /** Data source for audit trail table. */
  dataSource: MatTableDataSource<any>;

  /** Paginator for audit trails table. */
  @ViewChild(MatPaginator) paginator: MatPaginator;
  /** Sorter for audit trails table. */
  @ViewChild(MatSort, { static: true }) sort: MatSort;

  /**
   * Retrieves the audit trail data from `resolve`.
   * @param {ActivatedRoute} route Activated Route.
   */
  constructor() {
    this.route.data.subscribe((data: { auditTrail: any }) => {
      this.auditTrailData = data.auditTrail;
    });
  }

  /**
   * Sets the audit trail commands table.
   */
  ngOnInit() {
    this.setAuditTrailCommands();
  }

  /**
   * Initalizes Audit Trail Commands Data.
   */
  get auditTrailCommandsData() {
    if (!this.auditTrailData || !this.auditTrailData.commandAsJson) {
      return [];
    }

    try {
      const parsed = JSON.parse(this.auditTrailData.commandAsJson);
      if (parsed && typeof parsed === 'object' && !Array.isArray(parsed)) {
        return Object.entries(parsed).map(
          ([
            key,
            value
          ]) => ({ command: key, commandValue: value })
        );
      }
      return [];
    } catch (err) {
      console.error('Invalid commandAsJson in audit trail:', err);
      return [];
    }
  }

  /**
   * Initializes the data source, paginator and sorter for audit trail commands table.
   */
  setAuditTrailCommands() {
    this.dataSource = new MatTableDataSource(this.auditTrailCommandsData);
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
  }
}