Moved to Angular 6.0

----

Pending
* Table width for the points column in incentive
* Linting
* keyboard navigation where it was used earlier
* can remove the unused totals calculated serverside in productledger
* spinner and loading bars
* Activate Guard for Employee Function tabs
* Progress for Fingerprint uploads
* deleted reconcile and receipe features as they were not being used
* focus the right control on component load

overlord/src/app/purchase/purchase-datasource.ts

@@ -0,0 +1,18 @@
+import {DataSource} from '@angular/cdk/collections';
+import {Observable} from 'rxjs';
+import {Inventory, Journal} from '../journal/voucher';
+
+
+export class PurchaseDataSource extends DataSource<Inventory> {
+
+  constructor(private data: Observable<Inventory[]>) {
+    super();
+  }
+
+  connect(): Observable<Inventory[]> {
+    return this.data;
+  }
+
+  disconnect() {
+  }
+}

overlord/src/app/purchase/purchase-dialog.component.html

@@ -0,0 +1,37 @@
+<h1 mat-dialog-title>Edit Purchase Entry</h1>
+<div mat-dialog-content>
+  <form [formGroup]="form">
+    <div fxLayout="row" fxLayoutAlign="space-around start" fxLayout.lt-md="column" fxLayoutGap="20px"
+         fxLayoutGap.lt-md="0px">
+      <mat-form-field fxFlex="52">
+        <input type="text" matInput placeholder="Product" #productElement [matAutocomplete]="autoP"
+               formControlName="product" autocomplete="off">
+        <mat-autocomplete #autoP="matAutocomplete" autoActiveFirstOption [displayWith]="displayProductName"
+                          (optionSelected)="productSelected($event)">
+          <mat-option *ngFor="let product of products | async" [value]="product">{{product.name}}</mat-option>
+        </mat-autocomplete>
+      </mat-form-field>
+      <mat-form-field fxFlex="12">
+        <mat-label>Quantity</mat-label>
+        <input type="text" matInput placeholder="Quantity" formControlName="quantity" autocomplete="off">
+      </mat-form-field>
+      <mat-form-field fxFlex="12">
+        <mat-label>Price</mat-label>
+        <input type="text" matInput placeholder="Price" formControlName="price" autocomplete="off">
+      </mat-form-field>
+      <mat-form-field fxFlex="12">
+        <mat-label>Tax</mat-label>
+        <input type="text" matInput placeholder="Tax" formControlName="tax" autocomplete="off">
+      </mat-form-field>
+      <mat-form-field fxFlex="12">
+        <mat-label>Discount</mat-label>
+        <input type="text" matInput placeholder="Discount" formControlName="discount" autocomplete="off">
+      </mat-form-field>
+    </div>
+  </form>
+</div>
+<div mat-dialog-actions>
+  <button mat-button [mat-dialog-close]="false" cdkFocusInitial>Cancel</button>
+  <button mat-button (click)="accept()" color="primary">Ok</button>
+</div>
+

overlord/src/app/purchase/purchase-dialog.component.spec.ts

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

overlord/src/app/purchase/purchase-dialog.component.ts

@@ -0,0 +1,84 @@
+import {Component, Inject, OnInit} from '@angular/core';
+import {MAT_DIALOG_DATA, MatAutocompleteSelectedEvent, MatDialogRef} from '@angular/material';
+import {debounceTime, distinctUntilChanged, map, startWith, switchMap} from 'rxjs/operators';
+import {FormBuilder, FormGroup} from '@angular/forms';
+import {Observable, of as observableOf} from 'rxjs';
+import {Product} from '../product/product';
+import {ProductService} from '../product/product.service';
+
+@Component({
+  selector: 'app-purchase-dialog',
+  templateUrl: './purchase-dialog.component.html',
+  styleUrls: ['./purchase-dialog.component.css']
+})
+export class PurchaseDialogComponent implements OnInit {
+  products: Observable<Product[]>;
+  form: FormGroup;
+  product: Product;
+
+  constructor(
+    public dialogRef: MatDialogRef<PurchaseDialogComponent>,
+    @Inject(MAT_DIALOG_DATA) public data: any,
+    private fb: FormBuilder,
+    private productSer: ProductService) {
+    this.createForm();
+    this.listenToProductAutocompleteChange();
+  }
+
+  ngOnInit() {
+    this.form.setValue({
+      product: this.data.inventory.product,
+      quantity: this.data.inventory.quantity,
+      price: this.data.inventory.rate,
+      tax: this.data.inventory.tax,
+      discount: this.data.inventory.discount
+    });
+    this.product = this.data.inventory.product;
+  }
+
+  createForm() {
+    this.form = this.fb.group({
+      product: '',
+      quantity: '',
+      price: '',
+      tax: '',
+      discount: ''
+    });
+  }
+
+  listenToProductAutocompleteChange(): void {
+    const control = this.form.get('product');
+    this.products = control.valueChanges
+      .pipe(
+        startWith(null),
+        map(x => (x !== null && x.length >= 1) ? x : null),
+        debounceTime(150),
+        distinctUntilChanged(),
+        switchMap(x => (x === null) ? observableOf([]) : this.productSer.autocomplete(x))
+      );
+  }
+
+  displayProductName(product?: Product): string | undefined {
+    return product ? product.name : undefined;
+  }
+
+  productSelected(event: MatAutocompleteSelectedEvent): void {
+    this.product = event.option.value;
+    this.form.get('price').setValue(this.product.price);
+  }
+
+  accept(): void {
+    const formValue = this.form.value;
+    const quantity = +(formValue.quantity);
+    const price = +(formValue.price);
+    const tax = +(formValue.tax);
+    const discount = +(formValue.discount);
+    this.data.inventory.product = this.product;
+    this.data.inventory.quantity = quantity;
+    this.data.inventory.rate = price;
+    this.data.inventory.tax = tax;
+    this.data.inventory.discount = discount;
+    this.data.inventory.amount = quantity * price * (1 + tax) * (1 - discount);
+    this.dialogRef.close(this.data.inventory);
+  }
+}

overlord/src/app/purchase/purchase-resolver.service.spec.ts

@@ -0,0 +1,15 @@
+import {inject, TestBed} from '@angular/core/testing';
+
+import {PurchaseResolver} from './purchase-resolver.service';
+
+describe('PurchaseResolver', () => {
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [PurchaseResolver]
+    });
+  });
+
+  it('should be created', inject([PurchaseResolver], (service: PurchaseResolver) => {
+    expect(service).toBeTruthy();
+  }));
+});

overlord/src/app/purchase/purchase-resolver.service.ts

@@ -0,0 +1,23 @@
+import {Injectable} from '@angular/core';
+import {ActivatedRouteSnapshot, Resolve, RouterStateSnapshot} from '@angular/router';
+import {Observable} from 'rxjs/internal/Observable';
+import {Voucher} from '../journal/voucher';
+import {VoucherService} from '../journal/voucher.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class PurchaseResolver implements Resolve<Voucher> {
+
+  constructor(private ser: VoucherService) {
+  }
+
+  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<Voucher> {
+    const id = route.paramMap.get('id');
+    if (id === null) {
+      return this.ser.getOfType('Purchase');
+    } else {
+      return this.ser.get(id);
+    }
+  }
+}

overlord/src/app/purchase/purchase-routing.module.spec.ts

@@ -0,0 +1,13 @@
+import {PurchaseRoutingModule} from './purchase-routing.module';
+
+describe('PurchaseRoutingModule', () => {
+  let purchaseRoutingModule: PurchaseRoutingModule;
+
+  beforeEach(() => {
+    purchaseRoutingModule = new PurchaseRoutingModule();
+  });
+
+  it('should create an instance', () => {
+    expect(purchaseRoutingModule).toBeTruthy();
+  });
+});

overlord/src/app/purchase/purchase-routing.module.ts

@@ -0,0 +1,49 @@
+import {NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+import {RouterModule, Routes} from '@angular/router';
+import {PurchaseResolver} from './purchase-resolver.service';
+import {AuthGuard} from '../auth/auth-guard.service';
+import {PurchaseComponent} from './purchase.component';
+
+const purchaseRoutes: Routes = [
+  {
+    path: 'Purchase',
+    component: PurchaseComponent,
+    canActivate: [AuthGuard],
+    data: {
+      permission: 'Purchase'
+    },
+    resolve: {
+      voucher: PurchaseResolver
+    },
+    runGuardsAndResolvers: 'always'
+  },
+  {
+    path: 'Purchase/:id',
+    component: PurchaseComponent,
+    canActivate: [AuthGuard],
+    data: {
+      permission: 'Purchase'
+    },
+    resolve: {
+      voucher: PurchaseResolver
+    },
+    runGuardsAndResolvers: 'always'
+  }
+];
+
+@NgModule({
+  imports: [
+    CommonModule,
+    RouterModule.forChild(purchaseRoutes)
+
+  ],
+  exports: [
+    RouterModule
+  ],
+  providers: [
+    PurchaseResolver
+  ]
+})
+export class PurchaseRoutingModule {
+}

overlord/src/app/purchase/purchase.component.css

@@ -0,0 +1,32 @@
+.right {
+  display: flex;
+  justify-content: flex-end;
+}
+
+.selected {
+  background: #fff3cd
+}
+
+.unposted {
+  background: #f8d7da
+}
+
+.center {
+  display: flex;
+  justify-content: center;
+}
+
+.img-container {
+  position: relative;
+}
+
+.img-container .overlay {
+  display: none;
+}
+
+.img-container:hover > .overlay {
+  display: inline-block;
+  position: absolute;
+  left: 60px;
+  top: 0;
+}

overlord/src/app/purchase/purchase.component.html

@@ -0,0 +1,149 @@
+<mat-card>
+  <mat-card-title-group>
+    <mat-card-title>Purchase</mat-card-title>
+  </mat-card-title-group>
+  <mat-card-content>
+    <form [formGroup]="form" fxLayout="column">
+      <div fxLayout="row" fxLayoutAlign="space-around start" fxLayout.lt-md="column" fxLayoutGap="20px"
+           fxLayoutGap.lt-md="0px">
+        <mat-form-field fxFlex="40">
+          <input matInput [matDatepicker]="date" (focus)="date.open()" placeholder="Date" formControlName="date"
+                 autocomplete="off">
+          <mat-datepicker-toggle matSuffix [for]="date"></mat-datepicker-toggle>
+          <mat-datepicker #date></mat-datepicker>
+        </mat-form-field>
+        <mat-form-field fxFlex="40">
+          <input type="text" matInput placeholder="Account" #accountElement [matAutocomplete]="autoA"
+                 formControlName="account" autocomplete="off">
+          <mat-hint *ngIf="accBal">
+            Balance as on Date: <strong>{{accBal.date | currency:'INR' | accounting}}</strong> /
+            Final balance: <strong>{{accBal.total | currency:'INR' | accounting}}</strong>
+          </mat-hint>
+          <mat-autocomplete #autoA="matAutocomplete" autoActiveFirstOption [displayWith]="displayAccount"
+                            (optionSelected)="accountSelected($event)">
+            <mat-option *ngFor="let account of accounts | async" [value]="account">{{account.name}}</mat-option>
+          </mat-autocomplete>
+        </mat-form-field>
+        <mat-form-field fxFlex="20">
+          <mat-label>Amount</mat-label>
+          <span matPrefix>₹ </span>
+          <input type="text" matInput formControlName="amount">
+        </mat-form-field>
+      </div>
+
+      <div formGroupName="addRow" fxLayout="row" fxLayoutAlign="space-around start" fxLayout.lt-md="column"
+           fxLayoutGap="20px" fxLayoutGap.lt-md="0px">
+        <mat-form-field fxFlex="50">
+          <input type="text" matInput placeholder="Product" #productElement [matAutocomplete]="autoP"
+                 formControlName="product" autocomplete="off">
+          <mat-autocomplete #autoP="matAutocomplete" autoActiveFirstOption [displayWith]="displayProductName"
+                            (optionSelected)="productSelected($event)">
+            <mat-option *ngFor="let product of products | async" [value]="product">{{product.name}}</mat-option>
+          </mat-autocomplete>
+        </mat-form-field>
+        <mat-form-field fxFlex="10">
+          <mat-label>Quantity</mat-label>
+          <input type="text" matInput placeholder="Quantity" formControlName="quantity" autocomplete="off">
+        </mat-form-field>
+        <mat-form-field fxFlex="10">
+          <mat-label>Price</mat-label>
+          <input type="text" matInput placeholder="Price" formControlName="price" autocomplete="off">
+        </mat-form-field>
+        <mat-form-field fxFlex="10">
+          <mat-label>Tax</mat-label>
+          <input type="text" matInput placeholder="Tax" formControlName="tax" autocomplete="off">
+        </mat-form-field>
+        <mat-form-field fxFlex="10">
+          <mat-label>Discount</mat-label>
+          <input type="text" matInput placeholder="Discount" formControlName="discount" autocomplete="off">
+        </mat-form-field>
+
+        <button mat-raised-button color="primary" (click)="addRow()" fxFlex="10">Add</button>
+      </div>
+      <mat-table #table [dataSource]="dataSource" matSort aria-label="Elements">
+
+        <!-- Product Column -->
+        <ng-container matColumnDef="product">
+          <mat-header-cell *matHeaderCellDef>Product</mat-header-cell>
+          <mat-cell *matCellDef="let row">{{row.product.name}}</mat-cell>
+        </ng-container>
+
+        <!-- Quantity Column -->
+        <ng-container matColumnDef="quantity">
+          <mat-header-cell *matHeaderCellDef class="right">Quantity</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="right">{{row.quantity | number:'1.2-2'}}</mat-cell>
+        </ng-container>
+
+        <!-- Rate Column -->
+        <ng-container matColumnDef="rate">
+          <mat-header-cell *matHeaderCellDef class="right">Rate</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="right">{{row.rate | currency:'INR'}}</mat-cell>
+        </ng-container>
+
+        <!-- Tax Column -->
+        <ng-container matColumnDef="tax">
+          <mat-header-cell *matHeaderCellDef class="right">Tax</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="right">{{row.tax | percent:'1.2-2'}}</mat-cell>
+        </ng-container>
+
+        <!-- Discount Column -->
+        <ng-container matColumnDef="discount">
+          <mat-header-cell *matHeaderCellDef class="right">Discount</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="right">{{row.discount | percent:'1.2-2'}}</mat-cell>
+        </ng-container>
+
+        <!-- Amount Column -->
+        <ng-container matColumnDef="amount">
+          <mat-header-cell *matHeaderCellDef class="right">Amount</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="right">{{row.amount | currency:'INR'}}</mat-cell>
+        </ng-container>
+
+        <!-- Action Column -->
+        <ng-container matColumnDef="action">
+          <mat-header-cell *matHeaderCellDef class="center">Action</mat-header-cell>
+          <mat-cell *matCellDef="let row" class="center">
+            <button mat-icon-button (click)="editRow(row)">
+              <mat-icon>edit</mat-icon>
+            </button>
+            <button mat-icon-button color="warn" (click)="deleteRow(row)">
+              <mat-icon>delete</mat-icon>
+            </button>
+          </mat-cell>
+        </ng-container>
+
+        <mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
+        <mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
+      </mat-table>
+      <mat-form-field>
+        <mat-label>Narration</mat-label>
+        <textarea matInput placeholder="Narration" formControlName="narration"></textarea>
+      </mat-form-field>
+      <div fxLayout="row" fxLayoutGap="0.5%" fxLayoutAlign="center">
+        <div class="img-container" fxFlex="20%" *ngFor="let item of voucher.files">
+          <img [src]="item.thumbnail" (click)="zoomImage(item)">
+          <button mat-icon-button class="overlay" (click)="deleteImage(item)">
+            <mat-icon>delete</mat-icon>
+          </button>
+        </div>
+      </div>
+      <input type="file" multiple accept="image/*" (change)="detectFiles($event)">
+    </form>
+  </mat-card-content>
+  <mat-card-actions>
+    <button mat-raised-button color="primary" (click)="save()" [disabled]="!canSave()">
+      {{(voucher.id) ? 'Update' : 'Save'}}
+    </button>
+    <button mat-raised-button (click)="post()" *ngIf="voucher.id"
+            [disabled]="voucher.posted || auth.user.perms.indexOf('Post Vouchers') === -1">
+      {{(voucher.posted) ? 'Posted' : 'Post'}}
+    </button>
+    <button mat-raised-button color="warn" (click)="confirmDelete()" *ngIf="voucher.id" [disabled]="!canSave()">
+      Delete
+    </button>
+  </mat-card-actions>
+  <mat-card-subtitle *ngIf="voucher.id">
+    Created on <strong>{{voucher.creationDate | localTime}}</strong> and
+    Last Edited on <strong>{{voucher.lastEditDate | localTime}}</strong>
+    by <strong>{{voucher.user.name}}</strong>. {{(voucher.poster) ? 'Posted by ' + voucher.poster : ''}}
+  </mat-card-subtitle>
+</mat-card>

overlord/src/app/purchase/purchase.component.spec.ts

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

overlord/src/app/purchase/purchase.component.ts

@@ -0,0 +1,353 @@
+import {AfterViewInit, Component, ElementRef, OnInit, ViewChild} from '@angular/core';
+import {FormBuilder, FormGroup} from '@angular/forms';
+import {MatAutocompleteSelectedEvent, MatDialog} from '@angular/material';
+import {ActivatedRoute, Router} from '@angular/router';
+import {BehaviorSubject, fromEvent, Observable, of, of as observableOf, zip} from 'rxjs';
+import {PurchaseDataSource} from './purchase-datasource';
+import {Account} from '../account/account';
+import {VoucherService} from '../journal/voucher.service';
+import {AccountService} from '../account/account.service';
+import {DbFile, Inventory, Journal, Voucher} from '../journal/voucher';
+import * as moment from 'moment';
+import {AuthService} from '../auth/auth.service';
+import {ConfirmDialogComponent} from '../shared/confirm-dialog/confirm-dialog.component';
+import {ToasterService} from '../core/toaster.service';
+import {debounceTime, distinctUntilChanged, map, startWith, switchMap} from 'rxjs/operators';
+import {PurchaseDialogComponent} from './purchase-dialog.component';
+import {ImageDialogComponent} from '../shared/image-dialog/image-dialog.component';
+import {ProductService} from '../product/product.service';
+import {Product} from '../product/product';
+
+@Component({
+  selector: 'app-purchase',
+  templateUrl: './purchase.component.html',
+  styleUrls: ['./purchase.component.css']
+})
+export class PurchaseComponent implements OnInit, AfterViewInit {
+  @ViewChild('accountElement') accountElement: ElementRef;
+  @ViewChild('productElement') productElement: ElementRef;
+  public inventoryObservable = new BehaviorSubject<Inventory[]>([]);
+  dataSource: PurchaseDataSource;
+  form: FormGroup;
+  purchaseJournal: Journal;
+  voucher: Voucher;
+  account: Account;
+  product: Product;
+  accBal: any;
+
+  displayedColumns = ['product', 'quantity', 'rate', 'tax', 'discount', 'amount', 'action'];
+
+  accounts: Observable<Account[]>;
+  products: Observable<Product[]>;
+
+  constructor(
+    private route: ActivatedRoute,
+    private router: Router,
+    private fb: FormBuilder,
+    private dialog: MatDialog,
+    private toaster: ToasterService,
+    private auth: AuthService,
+    private ser: VoucherService,
+    private productSer: ProductService,
+    private accountSer: AccountService
+  ) {
+    this.createForm();
+    this.listenToAccountAutocompleteChange();
+    this.listenToProductAutocompleteChange();
+  }
+
+  ngOnInit() {
+    this.route.data
+      .subscribe((data: { voucher: Voucher }) => {
+        this.loadVoucher(data.voucher);
+      });
+  }
+
+  ngAfterViewInit() {
+    this.focusAccount();
+  }
+
+  loadVoucher(voucher) {
+    this.voucher = voucher;
+    this.purchaseJournal = this.voucher.journals.filter(x => x.debit === -1)[0];
+    this.form.setValue({
+      date: moment(this.voucher.date, 'DD-MMM-YYYY').toDate(),
+      account: this.purchaseJournal.account,
+      amount: this.purchaseJournal.amount,
+      addRow: {
+        product: '',
+        quantity: '',
+        price: '',
+        tax: '',
+        discount: ''
+      },
+      narration: this.voucher.narration
+    });
+    this.dataSource = new PurchaseDataSource(this.inventoryObservable);
+    this.updateView();
+  }
+
+  focusAccount() {
+    setTimeout(() => {
+      this.accountElement.nativeElement.focus();
+    }, 0);
+  }
+
+  addRow() {
+    const formValue = this.form.get('addRow').value;
+    const quantity = +(formValue.quantity);
+    const price = +(formValue.price);
+    const tax = +(formValue.tax);
+    const discount = +(formValue.discount);
+    if (this.product === null || quantity <= 0 || price <= 0) {
+      return;
+    }
+    const oldFiltered = this.voucher.inventories.filter((x) => x.product.id === this.product.id);
+    if (oldFiltered.length) {
+      this.toaster.show('Danger', 'Product already added');
+      return;
+    }
+    this.voucher.inventories.push({
+      id: null,
+      quantity: quantity,
+      rate: price,
+      tax: tax,
+      discount: discount,
+      amount: quantity * price * (1 + tax) * (1 - discount),
+      product: this.product,
+      batch: null
+    });
+    this.resetAddRow();
+    this.updateView();
+  }
+
+  resetAddRow() {
+    this.form.get('addRow').reset({
+      product: null,
+      quantity: '',
+      price: '',
+      tax: '',
+      discount: ''
+    });
+    this.product = null;
+    setTimeout(() => {
+      this.productElement.nativeElement.focus();
+    }, 0);
+  }
+
+  updateView() {
+    this.inventoryObservable.next(this.voucher.inventories);
+    this.purchaseJournal.amount = Math.abs(this.voucher.inventories.map((x) => x.amount).reduce((p, c) => p + c, 0));
+    this.form.get('amount').setValue(this.purchaseJournal.amount);
+  }
+
+  editRow(row: Inventory) {
+    const dialogRef = this.dialog.open(PurchaseDialogComponent, {
+      width: '750px',
+      data: {inventory: Object.assign({}, row)}
+    });
+
+    dialogRef.afterClosed().subscribe((result: boolean | Inventory) => {
+      if (!result) {
+        return;
+      }
+      const j = result as Inventory;
+      if (j.product.id !== row.product.id && this.voucher.inventories.filter((x) => x.product.id === j.product.id).length) {
+        return;
+      }
+      Object.assign(row, j);
+      this.updateView();
+    });
+  }
+
+  deleteRow(row: Inventory) {
+    this.voucher.inventories.splice(this.voucher.inventories.indexOf(row), 1);
+    this.updateView();
+  }
+
+  createForm() {
+    this.form = this.fb.group({
+      date: '',
+      account: '',
+      amount: {value: '', disabled: true},
+      addRow: this.fb.group({
+        product: '',
+        quantity: '',
+        price: '',
+        tax: '',
+        discount: ''
+      }),
+      narration: ''
+    });
+    this.accBal = null;
+  }
+
+  canSave() {
+    if (!this.voucher.id) {
+      return true;
+    } else if (this.voucher.posted && this.auth.user.perms.indexOf('Edit Posted Vouchers') !== -1) {
+      return true;
+    } else {
+      return this.voucher.user.id === this.auth.user.id || this.auth.user.perms.indexOf('Edit Other User\'s Vouchers') !== -1;
+    }
+  }
+
+  post() {
+    this.ser.post(this.voucher.id)
+      .subscribe(
+        (result) => {
+          this.loadVoucher(result);
+          this.toaster.show('Success', 'Voucher Posted');
+        },
+        (error) => {
+          this.toaster.show('Danger', error.error);
+        }
+      );
+  }
+
+  save() {
+    this.ser.save(this.getVoucher())
+      .subscribe(
+        (result) => {
+          this.loadVoucher(result);
+          this.toaster.show('Success', '');
+          this.router.navigate(['/Purchase', result.id]);
+        },
+        (error) => {
+          this.toaster.show('Danger', error.error);
+        }
+      );
+  }
+
+  getVoucher(): Voucher {
+    const formModel = this.form.value;
+    this.voucher.date = moment(formModel.date).format('DD-MMM-YYYY');
+    this.purchaseJournal.account = formModel.account;
+    this.voucher.narration = formModel.narration;
+    return this.voucher;
+  }
+
+  delete() {
+    this.ser.delete(this.voucher.id)
+      .subscribe(
+        (result) => {
+          this.toaster.show('Success', '');
+          this.router.navigate(['/Purchase'], {replaceUrl: true});
+        },
+        (error) => {
+          this.toaster.show('Danger', error.error);
+        }
+      );
+  }
+
+  confirmDelete(): void {
+    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
+      width: '250px',
+      data: {title: 'Delete Voucher?', content: 'Are you sure? This cannot be undone.'}
+    });
+
+    dialogRef.afterClosed().subscribe((result: boolean) => {
+      if (result) {
+        this.delete();
+      }
+    });
+  }
+
+  listenToAccountAutocompleteChange(): void {
+    const control = this.form.get('account');
+    this.accounts = control.valueChanges
+      .pipe(
+        startWith(null),
+        map(x => (x !== null && x.length >= 1) ? x : null),
+        debounceTime(150),
+        distinctUntilChanged(),
+        switchMap(x => (x === null) ? observableOf([]) : this.accountSer.autocomplete(x))
+      );
+  }
+
+  listenToProductAutocompleteChange(): void {
+    const control = this.form.get('addRow').get('product');
+    this.products = control.valueChanges
+      .pipe(
+        startWith(null),
+        map(x => (x !== null && x.length >= 1) ? x : null),
+        debounceTime(150),
+        distinctUntilChanged(),
+        switchMap(x => (x === null) ? observableOf([]) : this.productSer.autocomplete(x))
+      );
+  }
+
+  displayAccount(account?: Account): string | undefined {
+    return account ? account.name : undefined;
+  }
+
+  accountSelected(event: MatAutocompleteSelectedEvent): void {
+    this.account = event.option.value;
+  }
+
+  displayProductName(product?: Product): string | undefined {
+    return product ? product.name : undefined;
+  }
+
+  productSelected(event: MatAutocompleteSelectedEvent): void {
+    this.product = event.option.value;
+    this.form.get('addRow').get('price').setValue(this.product.price);
+  }
+
+  zoomImage(file: DbFile) {
+    this.dialog.open(ImageDialogComponent, {
+      width: '750px',
+      data: file.resized
+    });
+  }
+
+  deleteImage(file: DbFile) {
+    const index = this.voucher.files.indexOf(file);
+    this.voucher.files.splice(index, 1);
+  }
+
+  detectFiles(event) {
+    const files = event.target.files;
+    if (files) {
+      for (const file of files) {
+        const reader = new FileReader();
+        reader.onload = (e: any) => {
+          zip(of(e.target.result),
+            this.resizeImage(e.target.result, 100, 150),
+            this.resizeImage(e.target.result, 825, 1170)
+          ).subscribe(
+            val => this.voucher.files.push({id: null, thumbnail: val[1], resized: val[2]})
+          );
+        };
+        reader.readAsDataURL(file);
+      }
+    }
+  }
+
+  resizeImage(image, MAX_WIDTH, MAX_HEIGHT) {
+    const canvas = document.createElement('canvas');
+    const ctx = canvas.getContext('2d');
+    const img = new Image();
+    const ex = fromEvent(img, 'load').pipe(
+      map((e) => {
+        let width = img.naturalWidth,
+          height = img.naturalHeight;
+        const ratio = Math.min(1, MAX_WIDTH / width, MAX_HEIGHT / height);
+
+        if (ratio === 1) {
+          return image;
+        }
+
+        width *= ratio;
+        height *= ratio;
+
+        canvas.width = width;
+        canvas.height = height;
+        ctx.drawImage(img, 0, 0, width, height);
+        return canvas.toDataURL('image/jpeg', 0.95);
+      })
+    );
+    img.src = image;
+    return ex;
+  }
+}

overlord/src/app/purchase/purchase.module.spec.ts

@@ -0,0 +1,13 @@
+import {PurchaseModule} from './purchase.module';
+
+describe('PurchaseModule', () => {
+  let purchaseModule: PurchaseModule;
+
+  beforeEach(() => {
+    purchaseModule = new PurchaseModule();
+  });
+
+  it('should create an instance', () => {
+    expect(purchaseModule).toBeTruthy();
+  });
+});

overlord/src/app/purchase/purchase.module.ts

@@ -0,0 +1,84 @@
+import {NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+import {
+  DateAdapter,
+  MAT_DATE_FORMATS,
+  MAT_DATE_LOCALE,
+  MatAutocompleteModule,
+  MatButtonModule,
+  MatCardModule,
+  MatCheckboxModule,
+  MatDatepickerModule,
+  MatDialogModule,
+  MatFormFieldModule,
+  MatIconModule,
+  MatInputModule,
+  MatNativeDateModule,
+  MatPaginatorModule,
+  MatProgressSpinnerModule,
+  MatSelectModule,
+  MatSortModule,
+  MatTableModule
+} from '@angular/material';
+import {SharedModule} from '../shared/shared.module';
+import {ReactiveFormsModule} from '@angular/forms';
+import {CdkTableModule} from '@angular/cdk/table';
+import {PurchaseRoutingModule} from './purchase-routing.module';
+import {PurchaseComponent} from './purchase.component';
+import {MomentDateAdapter} from '@angular/material-moment-adapter';
+import {A11yModule} from '@angular/cdk/a11y';
+import {PurchaseDialogComponent} from './purchase-dialog.component';
+import {FlexLayoutModule, FlexModule} from '@angular/flex-layout';
+
+export const MY_FORMATS = {
+  parse: {
+    dateInput: 'DD-MMM-YYYY',
+  },
+  display: {
+    dateInput: 'DD-MMM-YYYY',
+    monthYearLabel: 'MMM YYYY',
+    dateA11yLabel: 'DD-MMM-YYYY',
+    monthYearA11yLabel: 'MMM YYYY',
+  },
+};
+
+@NgModule({
+  imports: [
+    A11yModule,
+    CommonModule,
+    CdkTableModule,
+    FlexModule,
+    FlexLayoutModule,
+    MatAutocompleteModule,
+    MatButtonModule,
+    MatCardModule,
+    MatCheckboxModule,
+    MatDatepickerModule,
+    MatDialogModule,
+    MatFormFieldModule,
+    MatIconModule,
+    MatInputModule,
+    MatNativeDateModule,
+    MatPaginatorModule,
+    MatProgressSpinnerModule,
+    MatSelectModule,
+    MatSortModule,
+    MatTableModule,
+    ReactiveFormsModule,
+    SharedModule,
+    PurchaseRoutingModule
+  ],
+  declarations: [
+    PurchaseComponent,
+    PurchaseDialogComponent
+  ],
+  providers: [
+    {provide: DateAdapter, useClass: MomentDateAdapter, deps: [MAT_DATE_LOCALE]},
+    {provide: MAT_DATE_FORMATS, useValue: MY_FORMATS},
+  ],
+  entryComponents: [
+    PurchaseDialogComponent
+  ]
+})
+export class PurchaseModule {
+}

overlord/src/app/purchase/purchase.service.spec.ts

@@ -0,0 +1,15 @@
+import {inject, TestBed} from '@angular/core/testing';
+
+import {VoucherService} from './purchase.service';
+
+describe('PurchaseService', () => {
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [VoucherService]
+    });
+  });
+
+  it('should be created', inject([VoucherService], (service: VoucherService) => {
+    expect(service).toBeTruthy();
+  }));
+});