import uuid from "react-native-uuid";
import { dimensions_t, area_t, dimensionsDisplay } 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: ProductAttributes) {
  return Object.entries(attributes).map(([key, value]) => {
    return { key, value };
  });
}

export function productLabel(
  product: Product,
  { pricing }: { pricing: boolean } = { pricing: false }
) {
  const n = product.attributes?.name || `Product ${product.id}`;
  const p = priceDisplay(product.pricePerUnit);
  const d = dimensionsDisplay(product.dimensions);
  if (!pricing) {
    return n;
  }
  return `${n} ($${p} per ${d})`;
}

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