99 lines
2.6 KiB
TypeScript
99 lines
2.6 KiB
TypeScript
import uuid from "react-native-uuid";
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import { Area } from "convert";
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import { Transform } from "class-transformer";
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import { dimensions_t, area_t } from "./dimensions";
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import { matchDimensions } from "./dimensions";
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export type Id = string;
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export type Currency = "USD";
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export type ProductAttributes = {
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id?: string,
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name?: string,
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image?: string,
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description?: string,
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depth?: string,
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currency?: Currency,
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// [index:string]: any,
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}
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export function dimensionArea(d: dimensions_t) {
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return "w" in d ? d.w * d.l : 0;
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}
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export type ProductData = {
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id?: Id;
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pricePerUnit: number;
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dimensions: dimensions_t;
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attributes?: ProductAttributes;
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};
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export class Product {
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public id?: Id;
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constructor(public pricePerUnit: number, public dimensions: dimensions_t, public attributes: ProductAttributes = {},
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id?: Id,
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) {
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this.id = id || uuid.v4().toString();
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}
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public priceFor(dimensions: dimensions_t, damage : number): number {
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if (Number.isNaN(damage)) damage = 0;
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const dim = matchDimensions(dimensions, this.dimensions);
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return (
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dim.w ? dimensionArea(dim) / dimensionArea(this.dimensions) * this.pricePerUnit
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: (dim.l / this.dimensions.l) * this.pricePerUnit
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) * (1.0 - damage);
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}
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get priceDisplay() {
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return this.pricePerUnit.toLocaleString(undefined, {
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minimumFractionDigits: 2,
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maximumFractionDigits: 2,
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})
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}
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get pricePerUnitDisplay() {
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const p = this.priceDisplay;
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const { l, u } = this.dimensions;
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const w = (this.dimensions as area_t).w || null;
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const d = w ? `${l}${u} x ${w}${u}` : `${l}${u}`;
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return `$${p} per ${d}`
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}
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get attributesAsList() {
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return Object.entries(this.attributes).map(([key, value]) => {
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return { key, value }
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})
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}
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public removeAttribute(key: string) {
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this.attributes = Object.fromEntries(
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Object.entries(this.attributes).filter(
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([k, v]) => {
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k == key;
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}
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)
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);
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}
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get asObject(): ProductData {
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return {
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id: this.id,
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pricePerUnit: this.pricePerUnit,
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dimensions: this.dimensions,
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attributes: this.attributes,
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}
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}
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static fromObject({ id, pricePerUnit, dimensions, attributes }: ProductData) {
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return new Product(
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pricePerUnit,
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dimensions,
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attributes,
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id,
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)
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}
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} |