393 lines
13 KiB
TypeScript
393 lines
13 KiB
TypeScript
import { SelectionModel } from '@angular/cdk/collections';
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import { Injectable } from '@angular/core';
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import { MatDialog } from '@angular/material/dialog';
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import { round } from 'mathjs';
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import { BehaviorSubject, throwError } from 'rxjs';
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import { Observable } from 'rxjs/internal/Observable';
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import { tap } from 'rxjs/operators';
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import { BillViewItem } from '../core/bill-view-item';
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import { ModifierCategory } from '../core/modifier-category';
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import { Product } from '../core/product';
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import { ReceivePaymentItem } from '../core/receive-payment-item';
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import { SaleCategory } from '../core/sale-category';
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import { Table } from '../core/table';
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import { ToasterService } from '../core/toaster.service';
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import { ModifierCategoryService } from '../modifier-categories/modifier-category.service';
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import { Bill } from './bills/bill';
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import { BillSelectionItem } from './bills/bill-selection-item';
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import { Inventory } from './bills/inventory';
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import { Kot } from './bills/kot';
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import { VoucherType } from './bills/voucher-type';
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import { VoucherService } from './bills/voucher.service';
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import { ModifiersComponent } from './modifiers/modifiers.component';
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@Injectable()
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export class BillService {
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public dataObs: BehaviorSubject<BillViewItem[]>;
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public bill: Bill = new Bill();
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public netAmount: BehaviorSubject<number>;
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public discountAmount: BehaviorSubject<number>;
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public taxAmount: BehaviorSubject<number>;
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public amount: Observable<number>;
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public amountVal: number;
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public selection = new SelectionModel<string>(true, []);
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private amountBs: BehaviorSubject<number>;
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private updateTable: boolean;
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constructor(
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private dialog: MatDialog,
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private toaster: ToasterService,
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private ser: VoucherService,
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private modifierCategoryService: ModifierCategoryService,
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) {
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this.dataObs = new BehaviorSubject<BillViewItem[]>([]);
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this.netAmount = new BehaviorSubject(0);
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this.discountAmount = new BehaviorSubject(0);
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this.taxAmount = new BehaviorSubject(0);
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this.amountBs = new BehaviorSubject(0);
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this.amountVal = 0;
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this.updateTable = true;
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this.amount = this.amountBs.pipe(tap((x) => (this.amountVal = x)));
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}
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displayBill(): void {
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const data = this.transformBillToView(this.bill);
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this.dataObs.next(data);
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this.updateAmounts();
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}
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transformBillToView(bill: Bill): BillViewItem[] {
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const view: BillViewItem[] = bill.kots
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.map((k: Kot) => [
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new BillViewItem({
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kotId: k.id,
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isKot: true,
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info: k.id ? `Kot: ${k.code} / ${k.date} (${k.user.name})` : '== New Kot ==',
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}),
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...k.inventories.map(
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(i) =>
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new BillViewItem({
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id: i.id,
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kotId: k.id,
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isKot: false,
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productId: i.product.id,
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isHappyHour: i.isHappyHour,
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isPrinted: !!k.id,
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info: `${i.product.name} @ ${i.price} - ${round(i.discount * 100, 2)}%`,
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quantity: i.quantity,
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modifiers: i.modifiers,
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}),
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),
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])
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.reduce((a, c) => a.concat(c), []);
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return view;
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}
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loadData(bill: Bill, updateTable: boolean): void {
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this.updateTable = updateTable;
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bill.kots.push(new Kot());
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this.bill = bill;
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this.selection.clear();
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this.displayBill();
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}
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minimum(productId: string, happyHour: boolean): number {
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return this.bill.kots.reduce(
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(t, k) =>
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k.inventories.reduce(
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(a, c) =>
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c.product.id === productId && c.isHappyHour === happyHour ? a + c.quantity : a,
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0,
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) + t,
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0,
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);
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}
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addProduct(product: Product, quantity: number, discount: number): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === product.id && x.isHappyHour === product.hasHappyHour,
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);
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if (quantity < 0) {
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const minimum = this.minimum(product.id as string, product.hasHappyHour) + quantity;
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if (minimum + quantity < 0) {
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this.toaster.show('Error', 'Total quantity cannot be negative!');
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return;
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}
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}
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if (old !== undefined) {
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old.quantity += quantity;
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} else {
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const item = new Inventory({
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product,
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quantity,
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price: product.price,
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isHappyHour: product.hasHappyHour,
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taxRate: product.tax.rate,
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tax: product.tax,
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discount,
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modifiers: [],
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});
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newKot.inventories.push(item);
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this.modifierCategoryService.listForProduct(product.id as string).subscribe((result) => {
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if (result.reduce((a: number, c: ModifierCategory) => a + c.minimum, 0)) {
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this.showModifier(item);
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}
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});
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}
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this.displayBill();
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}
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showModifier(item: Inventory): void {
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// [routerLink]="['/sales', 'modifiers', item.id]"
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const dialogRef = this.dialog.open(ModifiersComponent, {
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position: {
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top: '10vh',
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},
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data: {
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list: this.modifierCategoryService.listForProduct(item.product.id as string),
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selected: item.modifiers,
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},
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});
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dialogRef.afterClosed().subscribe((result) => {
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if (result !== undefined) {
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item.modifiers = result;
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}
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});
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this.displayBill();
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}
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addOne(item: BillViewItem): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === item.productId && x.isHappyHour === item.isHappyHour,
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) as Inventory;
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old.quantity += 1;
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this.displayBill();
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}
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quantity(item: BillViewItem, quantity: number): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === item.productId && x.isHappyHour === item.isHappyHour,
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) as Inventory;
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old.quantity = quantity;
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this.displayBill();
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}
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subtractOne(item: BillViewItem, canEdit: boolean): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === item.productId && x.isHappyHour === item.isHappyHour,
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) as Inventory;
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if (
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item.quantity > 1 ||
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(canEdit && this.minimum(item.productId as string, item.isHappyHour) >= 1)
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) {
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old.quantity -= 1;
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} else if (item.quantity === 0) {
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newKot.inventories.splice(newKot.inventories.indexOf(old), 1);
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}
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this.displayBill();
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}
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removeItem(item: BillViewItem): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === item.productId && x.isHappyHour === item.isHappyHour,
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) as Inventory;
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newKot.inventories.splice(newKot.inventories.indexOf(old), 1);
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this.displayBill();
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}
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modifier(item: BillViewItem): void {
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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const old = newKot.inventories.find(
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(x) => x.product.id === item.productId && x.isHappyHour === item.isHappyHour,
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) as Inventory;
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this.showModifier(old);
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}
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discount(discounts: { id: string; name: string; discount: number }[]): void {
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for (const kot of this.bill.kots) {
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const noDiscount = kot.inventories
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.filter((x) => x.isHappyHour)
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.map((x) => x.product.id as string);
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for (const inventory of kot.inventories) {
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const e = discounts.find(
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(d) => d.id === (inventory.product.saleCategory as SaleCategory).id,
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);
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if (e === undefined || noDiscount.indexOf(inventory.product.id as string) !== -1) {
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continue;
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}
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inventory.discount = e.discount;
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}
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}
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this.displayBill();
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}
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printKot(guestBookId: string | null): Observable<boolean> {
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const item = JSON.parse(JSON.stringify(this.bill));
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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if (newKot.inventories.length === 0) {
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return throwError('Cannot print a blank KOT\nPlease add some products!');
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}
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if (!this.happyHourItemsBalanced() || this.happyHourItemsMoreThanRegular()) {
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return throwError('Happy hour products are not balanced.');
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}
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return this.ser.saveOrUpdate(item, VoucherType.Kot, guestBookId, this.updateTable);
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}
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printBill(guest_book_id: string | null, voucherType: VoucherType): Observable<boolean> {
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const item = JSON.parse(JSON.stringify(this.bill));
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const newKot = this.bill.kots.find((k) => k.id === undefined) as Kot;
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if (item.kots.length === 1 && newKot.inventories.length === 0) {
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return throwError('Cannot print a blank Bill\nPlease add some products!');
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}
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if (!this.happyHourItemsBalanced() || this.happyHourItemsMoreThanRegular()) {
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return throwError('Happy hour products are not balanced.');
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}
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return this.ser.saveOrUpdate(item, voucherType, guest_book_id, this.updateTable);
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}
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receivePayment(value: { choices: ReceivePaymentItem[]; reason: string }): Observable<boolean> {
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return this.ser.receivePayment(
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this.bill.id as string,
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value.choices,
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value.reason,
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this.updateTable,
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);
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}
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moveTable(table: Table): Observable<boolean> {
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return this.ser.moveTable(this.bill.id as string, table);
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}
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mergeTable(table: Table): Observable<boolean> {
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return this.ser.mergeTable(this.bill.id as string, table);
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}
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moveKot(kotId: string, table: Table): Observable<boolean> {
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return this.ser.moveKotToNewTable(this.bill.id as string, kotId, table);
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}
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mergeKot(kotId: string, table: Table): Observable<boolean> {
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return this.ser.mergeKotWithOldBill(this.bill.id as string, kotId, table);
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}
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voidBill(reason: string): Observable<boolean> {
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return this.ser.voidBill(this.bill.id as string, reason, this.updateTable);
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}
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updateAmounts() {
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this.netAmount.next(
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round(
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this.bill.kots.reduce(
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(t, k) =>
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k.inventories.reduce((a, c) => a + (c.isHappyHour ? 0 : c.price) * c.quantity, 0) + t,
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0,
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),
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),
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);
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this.discountAmount.next(
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round(
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this.bill.kots.reduce(
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(t, k) =>
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k.inventories.reduce(
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(a, c) => a + (c.isHappyHour ? 0 : c.price) * c.quantity * c.discount,
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0,
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) + t,
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0,
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),
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),
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);
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this.taxAmount.next(
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round(
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this.bill.kots.reduce(
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(t, k) =>
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k.inventories.reduce(
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(a, c) =>
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a + (c.isHappyHour ? 0 : c.price) * c.quantity * (1 - c.discount) * c.taxRate,
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0,
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) + t,
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0,
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),
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),
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);
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this.amountBs.next(
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round(
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this.bill.kots.reduce(
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(t, k) =>
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k.inventories.reduce(
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(a, c) =>
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a + (c.isHappyHour ? 0 : c.price) * c.quantity * (1 - c.discount) * (1 + c.taxRate),
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0,
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) + t,
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0,
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),
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),
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);
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}
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splitBill(inventories: string[], table: Table): Observable<boolean> {
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return this.ser.splitBill(this.bill.id as string, inventories, table, this.updateTable);
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}
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public getInventories(saleCategories: string[]): { move: string[]; keep: string[] } {
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const data: { move: string[]; keep: string[] } = { move: [], keep: [] };
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for (const kot of this.bill.kots) {
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for (const inv of kot.inventories) {
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if (saleCategories.indexOf(inv.product.saleCategory?.id as string) === -1) {
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data.keep.push(inv.id as string);
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} else {
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data.move.push(inv.id as string);
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}
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}
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}
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return data;
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}
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private happyHourItemsBalanced(): boolean {
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for (const kot of this.bill.kots) {
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const happyHourItems = kot.inventories
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.filter((x) => x.isHappyHour)
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.map((x) => ({ id: x.product.id as string, quantity: x.quantity }));
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for (const item of happyHourItems) {
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const q = kot.inventories.find(
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(x) => !x.isHappyHour && x.product.id === item.id && x.quantity === item.quantity,
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);
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if (q === undefined) {
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return false;
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}
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}
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}
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return true;
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}
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private happyHourItemsMoreThanRegular(): boolean {
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const invs: { [id: string]: { normal: number; happy: number } } = {};
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for (const kot of this.bill.kots) {
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for (const inventory of kot.inventories) {
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const pid = inventory.product.id as string;
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if (invs[pid] === undefined) {
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invs[pid] = { normal: 0, happy: 0 };
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}
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if (inventory.isHappyHour) {
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invs[pid].happy += inventory.quantity;
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} else {
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invs[pid].normal += inventory.quantity;
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}
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}
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}
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for (const [, value] of Object.entries(invs)) {
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if (value.happy > value.normal) {
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return true;
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}
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}
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return false;
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}
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}
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