feat: add loan charge to existing loan accounts (#370)

- Add Loans Module.
- Add add-loan-charge component.
- Add loans-routing.module.ts
- Add loan-charge-template.resolver.ts

Fixes: #247

src/app/loans/add-loan-charge/add-loan-charge.component.html

@@ -0,0 +1,62 @@
+<div class="container">
+
+  <mat-card>
+
+    <form [formGroup]="loanChargeForm" (ngSubmit)="submit()">
+
+      <mat-card-content>
+
+        <div fxLayout="column">
+          <mat-form-field>
+            <mat-label>Charge</mat-label>
+            <mat-select required formControlName="chargeId">
+              <mat-option *ngFor="let loanCharge of loanChargeOptions" [value]="loanCharge.id">
+                  {{ loanCharge.name + ' (' + loanCharge.currency.name + ')' }}
+              </mat-option>
+            </mat-select>
+            <mat-error *ngIf="loanChargeForm.controls.chargeId.hasError('required')">
+              Charge is <strong>required</strong>
+            </mat-error>
+          </mat-form-field>
+
+          <mat-form-field>
+            <mat-label>Amount</mat-label>
+            <input type=number required matInput formControlName="amount" />
+            <mat-error *ngIf="loanChargeForm.controls.amount.hasError('required')">
+              Amount is <strong>required</strong>
+            </mat-error>
+          </mat-form-field>
+
+          <mat-form-field>
+            <mat-label>Charge Calculation</mat-label>
+            <input matInput formControlName="chargeCalculation" />
+          </mat-form-field>
+
+          <mat-form-field>
+            <mat-label>Charge Time</mat-label>
+            <input matInput formControlName="chargeTime" />
+          </mat-form-field>
+
+          <mat-form-field *ngIf="loanChargeForm.controls['dueDate']">
+            <mat-label>Due On</mat-label>
+            <input matInput [min]="minDate" [max]="maxDate" [matDatepicker]="dueDatePicker" required formControlName="dueDate">
+            <mat-datepicker-toggle matSuffix [for]="dueDatePicker"></mat-datepicker-toggle>
+            <mat-datepicker #dueDatePicker></mat-datepicker>
+            <mat-error *ngIf="loanChargeForm.controls.dueDate.hasError('required')">
+              Due Date is <strong>required</strong>
+            </mat-error>
+          </mat-form-field>
+
+        </div>
+
+        <mat-card-actions fxLayoutGap="5px" fxLayout="row" fxLayout.xs="column" fxLayoutAlign="center">
+          <button type="button" mat-raised-button [routerLink]="['../']">Cancel</button>
+          <button mat-raised-button color="primary" [disabled]="!loanChargeForm.valid">Submit</button>
+        </mat-card-actions>
+
+      </mat-card-content>
+    </form>
+
+  </mat-card>
+  
+</div>

src/app/loans/add-loan-charge/add-loan-charge.component.scss

@@ -0,0 +1,3 @@
+.container{
+    width: 37rem;
+}

src/app/loans/add-loan-charge/add-loan-charge.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { AddLoanChargeComponent } from './add-loan-charge.component';
+
+describe('AddloanchargeComponent', () => {
+  let component: AddLoanChargeComponent;
+  let fixture: ComponentFixture<AddLoanChargeComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ AddLoanChargeComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(AddLoanChargeComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/loans/add-loan-charge/add-loan-charge.component.ts

@@ -0,0 +1,108 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormGroup, FormBuilder, Validators, FormControl } from '@angular/forms';
+import { Router, ActivatedRoute } from '@angular/router';
+import { DatePipe } from '@angular/common';
+
+/** Custom Services */
+import { LoansService } from '../loans.service';
+
+/**
+ * Create Add Loan Charge component.
+ */
+@Component({
+  selector: 'mifosx-addloancharge',
+  templateUrl: './add-loan-charge.component.html',
+  styleUrls: ['./add-loan-charge.component.scss']
+})
+export class AddLoanChargeComponent implements OnInit {
+
+  /** Minimum Due Date allowed. */
+  minDate = new Date(2000, 0, 1);
+  /** Maximum Due Date allowed. */
+  maxDate = new Date();
+  /** Add Loan Charge form. */
+  loanChargeForm: FormGroup;
+  /** loan charge options. */
+  loanChargeOptions: {
+    id: number;
+    name: string;
+    amount: number;
+    chargeCalculationType: {
+      value: any;
+    };
+    chargeTimeType: {
+      id: number;
+      value: any;
+    };
+  }[];
+  /** loan Id of the loan account. */
+  loanId: string;
+
+  /**
+   * Retrieves the loan charge template data from `resolve`.
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {AccountingService} accountingService Accounting Service.
+   * @param {ActivatedRoute} route Activated Route.
+   * @param {Router} router Router for navigation.
+   */
+  constructor(private formBuilder: FormBuilder,
+              private route: ActivatedRoute,
+              private router: Router,
+              private datePipe: DatePipe,
+              private loansService: LoansService) {
+    this.route.data.subscribe((data: { loanChargeTemplate: any }) => {
+      this.loanChargeOptions = data.loanChargeTemplate.chargeOptions;
+    });
+    this.loanId = this.route.snapshot.params['loanId'];
+  }
+
+  /**
+   * Creates the Loan Charge form.
+   */
+  ngOnInit() {
+    this.createLoanChargeForm();
+    this.loanChargeForm.controls.chargeId.valueChanges.subscribe(chargeId => {
+      const chargeDetails = this.loanChargeOptions.find(option => {
+        return option.id === chargeId;
+      });
+      if (chargeDetails.chargeTimeType.id === 2) {
+        this.loanChargeForm.addControl('dueDate', new FormControl('', Validators.required));
+      } else {
+        this.loanChargeForm.removeControl('dueDate');
+      }
+      this.loanChargeForm.patchValue({
+        'amount': chargeDetails.amount,
+        'chargeCalculation': chargeDetails.chargeCalculationType.value,
+        'chargeTime': chargeDetails.chargeTimeType.value
+      });
+    });
+  }
+
+  /**
+   * Creates the Loan Charge form.
+   */
+  createLoanChargeForm() {
+    this.loanChargeForm = this.formBuilder.group({
+      'chargeId': ['', Validators.required],
+      'amount': ['', Validators.required],
+      'chargeCalculation': [{ value: '', disabled: true }],
+      'chargeTime': [{ value: '', disabled: true }]
+    });
+  }
+
+  submit() {
+    const prevDueDate: Date = this.loanChargeForm.value.dueDate;
+    // TODO: Update once language and date settings are setup
+    const dateFormat = 'yyyy-MM-dd';
+    this.loanChargeForm.patchValue({
+      dueDate: this.datePipe.transform(prevDueDate, dateFormat)
+    });
+    const loanCharge = this.loanChargeForm.value;
+    loanCharge.locale = 'en';
+    loanCharge.dateFormat = dateFormat;
+    this.loansService.createLoanCharge(this.loanId, 'charges', loanCharge).subscribe(res => {
+      this.router.navigate(['../'], { relativeTo: this.route });
+    });
+  }
+}