/**
 * 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 { Component, OnInit, ViewChild, inject } from '@angular/core';
import { ViewJournalEntryComponent } from '../view-journal-entry/view-journal-entry.component';
import { MatDialog } from '@angular/material/dialog';
import { ActivatedRoute } from '@angular/router';
import { MatSort, MatSortHeader } from '@angular/material/sort';
import { MatPaginator } from '@angular/material/paginator';
import {
  MatTableDataSource,
  MatTable,
  MatColumnDef,
  MatHeaderCellDef,
  MatHeaderCell,
  MatCellDef,
  MatCell,
  MatHeaderRowDef,
  MatHeaderRow,
  MatRowDef,
  MatRow
} from '@angular/material/table';
import { Location, NgClass } from '@angular/common';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { DateFormatPipe } from '../../../pipes/date-format.pipe';
import { DatetimeFormatPipe } from '../../../pipes/datetime-format.pipe';
import { FormatNumberPipe } from '../../../pipes/format-number.pipe';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
import { YesnoPipe } from '@pipes/yesno.pipe';
import { MatCardModule } from '@angular/material/card';
import { MatTooltipModule } from '@angular/material/tooltip';

@Component({
  selector: 'mifosx-view-journal-entry-transaction',
  templateUrl: './view-journal-entry-transaction.component.html',
  styleUrls: ['./view-journal-entry-transaction.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    FaIconComponent,
    MatTable,
    MatSort,
    MatColumnDef,
    MatHeaderCellDef,
    MatHeaderCell,
    MatSortHeader,
    MatCellDef,
    MatCell,
    MatHeaderRowDef,
    MatHeaderRow,
    MatRowDef,
    MatRow,
    NgClass,
    DateFormatPipe,
    DatetimeFormatPipe,
    FormatNumberPipe,
    MatCardModule,
    MatTooltipModule
  ]
})
export class ViewJournalEntryTransactionComponent implements OnInit {
  private route = inject(ActivatedRoute);
  dialog = inject(MatDialog);
  private location = inject(Location);

  title: string;
  journalEntriesData: any[];
  transaction: any;
  transactionId: string;

  displayedColumns: string[] = [
    'id',
    'glAccountType',
    'glAccountCode',
    'glAccountName',
    'savingsAccountNo',
    'entryType',
    'debit',
    'credit'
  ];

  dataSource: MatTableDataSource<any>;

  @ViewChild(MatPaginator, { static: true }) paginator: MatPaginator;
  @ViewChild(MatSort, { static: true }) sort: MatSort;

  isJournalEntryLoaded = false;
  isManualJournalEntry = false;

  ngOnInit() {
    this.route.data.subscribe((data: { title: string; transaction: any; transferJournalEntryData: any }) => {
      this.title = data.title;
      this.isJournalEntryLoaded = false;
      if (this.isViewTransaction()) {
        this.transaction = data.transaction;
        if (data.transaction.pageItems.length > 0) {
          this.isJournalEntryLoaded = true;
          this.transactionId = data.transaction.pageItems[0].transactionId;
          this.isManualJournalEntry = data.transaction.pageItems[0].manualEntry;
        }
      } else if (this.isViewTransfer()) {
        this.journalEntriesData = data.transferJournalEntryData.journalEntryData.content;
        this.isJournalEntryLoaded = true;
      }
      this.setTransaction();
    });
  }

  isViewTransaction(): boolean {
    return this.title === 'View Transaction';
  }
  isViewTransfer(): boolean {
    return this.title === 'View Transfer';
  }

  setTransaction() {
    if (this.journalEntriesData != null) {
      this.dataSource = new MatTableDataSource(this.journalEntriesData);
    } else {
      this.dataSource = new MatTableDataSource(this.transaction.pageItems);
      this.dataSource.sortingDataAccessor = (transaction: any, property: any) => {
        switch (property) {
          case 'glAccountType':
            return transaction.glAccountType.value;
          case 'debit':
            return transaction.amount;
          case 'credit':
            return transaction.amount;
          default:
            return transaction[property];
        }
      };
    }
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
  }

  viewJournalEntry(journalEntry: any) {
    this.dialog.open(ViewJournalEntryComponent, { data: { journalEntry } });
  }

  goBack(): void {
    this.location.back();
  }

  getTotalDebit(): number {
    return (this.dataSource?.data || [])
      .filter((e) => e.entryType?.value === 'DEBIT')
      .reduce((sum, e) => sum + (e.amount || 0), 0);
  }

  getTotalCredit(): number {
    return (this.dataSource?.data || [])
      .filter((e) => e.entryType?.value === 'CREDIT')
      .reduce((sum, e) => sum + (e.amount || 0), 0);
  }

  isBalanced(): boolean {
    return Math.abs(this.getTotalDebit() - this.getTotalCredit()) < 0.01;
  }

  getAccountTypeBadgeClass(type: string): string {
    const map: Record<string, string> = {
      ASSET: 'txn-badge--asset',
      LIABILITY: 'txn-badge--liability',
      INCOME: 'txn-badge--income',
      EXPENSE: 'txn-badge--expense',
      EQUITY: 'txn-badge--equity'
    };
    return map[type] || 'txn-badge--default';
  }
}