feat: add loan transactions tab actions (#1206)

- add export transaction
- add view transactions
- add edit transactions
- add undo transactions
- add view receipt

Fixes: #1205

src/app/loans/loans-view/transactions/view-transaction/view-transaction.component.ts

@@ -0,0 +1,70 @@
+/** Angular Imports */
+import { Component } from '@angular/core';
+import { ActivatedRoute, Router } from '@angular/router';
+import { MatDialog } from '@angular/material';
+import { DatePipe } from '@angular/common';
+
+/** Custom Services */
+import { LoansService } from 'app/loans/loans.service';
+import { ConfirmationDialogComponent } from 'app/shared/confirmation-dialog/confirmation-dialog.component';
+
+/** Custom Dialogs */
+
+/**
+ * View Transaction Component.
+ * TODO: Add support for account transfers.
+ */
+@Component({
+  selector: 'mifosx-view-transaction',
+  templateUrl: './view-transaction.component.html',
+  styleUrls: ['./view-transaction.component.scss']
+})
+export class ViewTransactionComponent {
+
+  /** Transaction data. */
+  transactionData: any;
+
+  /**
+   * Retrieves the Transaction data from `resolve`.
+   * @param {LoansService} loansService Loans Service
+   * @param {ActivatedRoute} route Activated Route.
+   * @param {Router} router Router for navigation.
+   * @param {MatDialog} dialog Dialog reference.
+   * @param {DatePipe} datePipe DatePipe.
+   */
+  constructor(private loansService: LoansService,
+              private route: ActivatedRoute,
+              private datePipe: DatePipe,
+              private router: Router,
+              public dialog: MatDialog) {
+    this.route.data.subscribe((data: { loansAccountTransaction: any }) => {
+      this.transactionData = data.loansAccountTransaction;
+    });
+  }
+
+  /**
+   * Undo the loans transaction
+   */
+  undoTransaction() {
+    const accountId = this.route.parent.parent.parent.snapshot.params['loanId'];
+    const undoTransactionAccountDialogRef = this.dialog.open(ConfirmationDialogComponent, {
+      data: { heading: 'Undo Transaction', dialogContext: `Are you sure you want undo the transaction ${this.transactionData.id}` }
+    });
+    undoTransactionAccountDialogRef.afterClosed().subscribe((response: { confirm: any }) => {
+      if (response.confirm) {
+        const locale = 'en';
+        const dateFormat = 'dd MMMM yyyy';
+        const data = {
+          transactionDate: this.datePipe.transform(this.transactionData.date && new Date(this.transactionData.date), dateFormat),
+          transactionAmount: 0,
+          dateFormat,
+          locale
+        };
+        this.loansService.executeLoansAccountTransactionsCommand(accountId, 'undo', data, this.transactionData.id).subscribe(() => {
+          this.router.navigate(['../'], { relativeTo: this.route });
+        });
+      }
+    });
+  }
+
+}