Big Chunk of updates on way to making the sales portion working

bookie/src/app/sales/bills/bill-resolver.service.ts

@@ -0,0 +1,18 @@
+import {Injectable} from '@angular/core';
+import {ActivatedRouteSnapshot, Resolve, Router, RouterStateSnapshot} from '@angular/router';
+import {Observable} from 'rxjs/internal/Observable';
+import {Table} from "../../core/table";
+import {TableService} from "../../tables/table.service";
+
+@Injectable({
+  providedIn: 'root'
+})
+export class BillResolver implements Resolve<Table[]> {
+
+  constructor(private ser: TableService, private router: Router) {
+  }
+
+  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<Table[]> {
+    return this.ser.list();
+  }
+}

bookie/src/app/sales/bills/bills.component.css

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+.kot {
+  background-color: red;
+  font-weight: bold;
+}
+
+.square-button {
+  min-width: 150px;
+  max-width: 150px;
+  min-height: 150px;
+}

bookie/src/app/sales/bills/bills.component.html

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+<mat-card>
+  <mat-card-title-group>
+    <mat-card-title>Bill</mat-card-title>
+  </mat-card-title-group>
+  <mat-card-content fxLayout="row wrap" fxLayoutGap="grid 20px">
+    <mat-table #table [dataSource]="dataSource" aria-label="Elements">
+      <!-- Info Column -->
+      <ng-container matColumnDef="info">
+        <mat-cell *matCellDef="let row" [class.kot]="row.isKot">{{row.info}}</mat-cell>
+      </ng-container>
+      <mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
+    </mat-table>
+  </mat-card-content>
+</mat-card>
+<router-outlet></router-outlet>

bookie/src/app/sales/bills/bills.component.spec.ts

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

bookie/src/app/sales/bills/bills.component.ts

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+import { Component, OnInit } from '@angular/core';
+import { ActivatedRoute } from "@angular/router";
+import { Table } from "../../core/table";
+
+@Component({
+  selector: 'app-bills',
+  templateUrl: './bills.component.html',
+  styleUrls: ['./bills.component.css']
+})
+export class BillsComponent implements OnInit {
+  list: Table[];
+
+  constructor(private route: ActivatedRoute) {
+  }
+
+  ngOnInit() {
+    this.route.data
+      .subscribe((data: { list: Table[] }) => {
+        this.list = data.list;
+      });
+  }
+}