import uuid from "react-native-uuid";
import { dimensions_t, area_t } from "./dimensions";
import { matchDimensions } from "./dimensions";
import { Area, Length, Unit } from "convert";

export type Id = string;

export type Currency = "USD";

export type ProductAttributes = {
    id?: string,
    name?: string,
    image?: string,
    description?: string,
    depth?: string,
    currency?: Currency,
    [index:string]: any,
}

export function dimensionArea(d: dimensions_t) {
    return "w" in d ? d.w * d.l : 0;
}

export const PRODUCT_TYPES = [
    "lumber",
    "area_rug",
] as const;

export type product_type_t = typeof PRODUCT_TYPES[number];


export type Product = {
    id?: Id;
    pricePerUnit: number;
    dimensions: dimensions_t;
    type: product_type_t;
    attributes?: ProductAttributes;
};

export type LumberProduct = Product & {
    type: "lumber"
}

export type AreaRugProduct = Product & {
    type: "lumber"
}

export function productPriceFor(product : Product, dimensions: dimensions_t, damage: number = 0): number {
    if (Number.isNaN(damage)) damage = 0;
    const dim = matchDimensions(dimensions, product.dimensions);
    return (
        dim.w ? dimensionArea(dim) / dimensionArea(product.dimensions) * product.pricePerUnit
            : (dim.l / product.dimensions.l) * product.pricePerUnit
    ) * (1.0 - damage);
}

export function priceDisplay(price : number) {
    return price.toLocaleString(undefined, {
        minimumFractionDigits: 2,
        maximumFractionDigits: 2,
    })
}

export function pricePerUnitDisplay(product : Product) {
        const p = priceDisplay(product.pricePerUnit);
        const { l, u } = product.dimensions;
        const w = (product.dimensions as area_t).w || null;
        const d = w ? `${l}${u} x ${w}${u}` : `${l}${u}`;
        return `$${p} per ${d}`
}

export function attributesAsList(attributes : {[key:string]: any}) {
    return Object.entries(attributes).map(([key, value]) => {
        return { key, value }
    })
}

export function removeAttribute(attributes: {[key: string]: any}, key: string) {
    return Object.fromEntries(
        Object.entries(attributes).filter(
            ([k, v]) => {
                k == key;
            }
        )
    );
}