/** Angular Imports */
import { Component, OnInit, ViewChild } from '@angular/core';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort } from '@angular/material/sort';
import { MatTableDataSource } from '@angular/material/table';
import { ActivatedRoute } from '@angular/router';

/**
 * Accounting rules component.
 */
@Component({
  selector: 'mifosx-accounting-rules',
  templateUrl: './accounting-rules.component.html',
  styleUrls: ['./accounting-rules.component.scss']
})
export class AccountingRulesComponent implements OnInit {

  /** Accounting rule data. */
  accountingRuleData: any;
  /** Columns to be displayed in accounting rules table. */
  displayedColumns: string[] = ['name', 'officeName', 'debitTags', 'debitAccount', 'creditTags', 'creditAccount'];
  /** Data source for accounting rules table. */
  dataSource: MatTableDataSource<any>;

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

  /**
   * Retrieves the accounting rules data from `resolve`.
   * @param {ActivatedRoute} route Activated Route.
   */
  constructor(private route: ActivatedRoute) {
    // subscribe to the data from the route
    this.route.data.subscribe((data: { accountingRules: any }) => {
      // assign the accounting rules data to the component property
      this.accountingRuleData = data.accountingRules;
    });
  }

  /**
   * Sets the accounting rules table.
   */
  ngOnInit() {
    // call the function to set the accounting rules table
    this.setAccountingRules();
  }

  /**
   * Initializes the data source, paginator and sorter for accounting rules table.
   */
  setAccountingRules() {
    // iterate over each accounting rule
    this.accountingRuleData.forEach((accountingRule: any) => {
      // join the debit tags into a comma-separated string if they exist
      accountingRule.debitTags = accountingRule.debitTags ? accountingRule.debitTags.map((debitTag: any) => debitTag.tag.name).join(', ') : '';
      // join the credit tags into a comma-separated string if they exist
      accountingRule.creditTags = accountingRule.creditTags ? accountingRule.creditTags.map((creditTag: any) => creditTag.tag.name).join(', ') : '';
    });
    // create a new MatTableDataSource instance and assign the accounting rule data
    this.dataSource = new MatTableDataSource(this.accountingRuleData);
    // set the paginator for the data source
    this.dataSource.paginator = this.paginator;
    // set the sorting data accessor for the data source
    this.dataSource.sortingDataAccessor = (accountingRule: any, property: any) => {
      // return the appropriate value for sorting based on the property
      switch (property) {
        case 'debitAccount': return accountingRule.debitAccounts[0].name;
        case 'creditAccount': return accountingRule.creditAccounts[0].name;
        default: return accountingRule[property];
      }
    };
    // set the sorter for the data source
    this.dataSource.sort = this.sort;
  }

  /**
   * Filters data in accounting rules table based on passed value.
   * @param {string} filterValue Value to filter data.
   */
  applyFilter(filterValue: string) {
    // filter the data source based on the filter value
    this.dataSource.filter = filterValue.trim().toLowerCase();
  }

}