root
81 lines
2.3 KiB
TypeScript
81 lines
2.3 KiB
TypeScript
import {
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calculateSweetsWeightTotal,
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formatSweetWeightLabel,
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} from '../sweets/pricing';
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/** Shared order-line model used by cart, pre-order, and table orders. */
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export type OrderPricingMode = 'standard' | 'weight';
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export interface OrderLine {
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id: string;
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name: string;
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price: number;
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quantity: number;
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image?: string;
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pricingMode?: OrderPricingMode;
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pricePerKg?: number;
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pricePerHalfKg?: number;
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}
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export type NewOrderLine = Omit<OrderLine, 'quantity'>;
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export function addOrderLine(lines: OrderLine[], item: NewOrderLine): OrderLine[] {
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const existing = lines.find((line) => line.id === item.id);
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if (existing) {
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return lines.map((line) =>
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line.id === item.id ? { ...line, quantity: line.quantity + 1 } : line
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);
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}
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return [...lines, { ...item, quantity: 1 }];
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}
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export function updateOrderLineQuantity(
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lines: OrderLine[],
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id: string,
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quantity: number
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): OrderLine[] {
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if (quantity <= 0) {
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return lines.filter((line) => line.id !== id);
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}
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return lines.map((line) => (line.id === id ? { ...line, quantity } : line));
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}
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export function removeOrderLine(lines: OrderLine[], id: string): OrderLine[] {
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return lines.filter((line) => line.id !== id);
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}
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export function calculateLineTotal(line: OrderLine): number {
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if (line.pricingMode === 'weight') {
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return calculateSweetsWeightTotal(line.quantity);
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}
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return line.price * line.quantity;
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}
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export function calculateOrderTotal(lines: OrderLine[]): number {
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return lines.reduce((sum, line) => sum + calculateLineTotal(line), 0);
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}
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export function calculateOrderItemCount(lines: OrderLine[]): number {
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return lines.reduce((sum, line) => sum + line.quantity, 0);
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}
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export function formatOrderLinesForMessage(lines: OrderLine[]): string {
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return lines
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.map((line) => {
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const total = calculateLineTotal(line);
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if (line.pricingMode === 'weight') {
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const weight = formatSweetWeightLabel(line.quantity);
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return `${line.name} (${weight}) — ${total} kr`;
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}
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return `${line.quantity} × ${line.name} — ${total} kr`;
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})
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.join('\n');
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}
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export function formatLineQuantityLabel(line: OrderLine): string {
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if (line.pricingMode === 'weight') {
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return formatSweetWeightLabel(line.quantity);
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}
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return String(line.quantity);
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} |