index.js

import { appendFile, access, unlink, constants } from "fs";
import api from "./lib/lightspeed.js";
import slugify from "slugify";
import xml from "xml";

const FILE_PATH = "./products.xml";
const BASE_URL = "https://www.shootingsuppliesltd.co.uk";

class Item {
  constructor(
    id = 0,
    title = "",
    description = "",
    link = "",
    image_link = "",
    price = 0,
    availability = "",
    condition = "",
    brand = "",
    gtin = "",
    mpn = "",
    quantity = 0
  ) {
    this.id = id;
    this.title = title;
    this.description = description;
    this.link = link;
    this.image_link = image_link;
    this.price = price;
    this.availability = availability;
    this.condition = condition;
    this.brand = brand;
    this.gtin = gtin;
    this.mpn = mpn;
    this.quantity = quantity;
  }

  toXMLObject() {
    return {
      item: [
        { "g:id": this.id },
        { "g:title": this.title },
        { "g:description": this.description },
        { "g:link": this.link },
        { "g:image_link": this.image_link },
        { "g:condition": this.condition },
        { "g:availability": this.availability },
        { "g:price": this.price + " GBP" },
        {
          "g:shipping": [
            { "g:country": "GB" },
            { "g:service": "Parcel Force" },
            { "g:price": "5.95 GBP" },
            { "g:min_handling_time": "1" },
            { "g:max_handling_time": "3" },
            { "g:min_transit_time": "1" },
            { "g:max_transit_time": "2" },
          ],
        },
        { "g:gtin": this.gtin },
        { "g:brand": this.brand },
        { "g:mpn": this.mpn },
        { "g:store_code": "5e79d2c0-c252-581a-be7a-060029190706" },
        { "g:quantity": this.quantity },
      ],
    };
  }

  static async deleteFile() {
    // Check if the file exists
    access(FILE_PATH, constants.F_OK, (err) => {
      if (err) {
        console.error("File does not exist");
        return;
      }

      // Delete the file
      unlink(FILE_PATH, (err) => {
        if (err) {
          console.error("Error deleting the file", err);
          return;
        }

        console.log("File deleted successfully");
      });
    });
  }

  static async saveAsXML(items) {
    const xmlObj = {
      rss: [
        {
          _attr: {
            "xmlns:g": "http://base.google.com/ns/1.0",
            version: "2.0",
          },
        },
        {
          channel: [
            { title: "Shooting Supplies Ltd" },
            { link: BASE_URL },
            {
              description: "This is the product feed for Shooting Supplies Ltd",
            },
            ...items.map((item) => item.toXMLObject()),
          ],
        },
      ],
    };

    const xmlString = xml(xmlObj, { declaration: true, indent: "  " });

    try {
      await appendFile(FILE_PATH, xmlString, (err) => {
        if (err) {
          console.error("Error appending to products.xml:", err);
        } else {
          console.log("Items appended to products.xml");
        }
      });
    } catch (err) {
      console.error("Error: ", err);
    }
  }
}

const startApp = async () => {
  try {
    await Item.deleteFile();

    console.log("Fetching Items...");
    const items = await api.getItems(
      `["Category", "Manufacturer", "Images", "ItemShops", "ItemECommerce", "ItemPrices", "ItemAttributes", "ItemAttributes.ItemAttributeSet", "CustomFieldValues"]`
    );

    console.log("Writing to products.xml...");
    const formattedItems = items.map((item) => {
      let imgUrl = "";
      let newItem;

      if (!item.Images?.Image) {
        imgUrl = "";
      } else if (Array.isArray(item.Images.Image)) {
        imgUrl = item.Images.Image[0].FullPath
          ? item.Images.Image[0].FullPath
          : `${item.Images.Image[0].baseImageURL}/w_250/${item.Images.Image[0].publicID}.webp`;
      } else {
        imgUrl = `${item.Images.Image.baseImageURL}/w_250/${item.Images.Image.publicID}.webp`;
      }

      const getAvailability = (item) => {
        const quantity = parseInt(item.ItemShops.ItemShop[0].qoh);

        if (quantity <= 0) {
          return "out of stock";
        } else if (quantity > 0 && quantity <= 3) {
          return "limited availability";
        } else {
          return "in stock";
        }
      };

      let description = `"${item.ItemECommerce?.shortDescription
        .replace(/<[^>]*>?/gm, "")
        .replaceAll('"', "inch")}"`;

      newItem = new Item(
        item.itemID,
        item.description
          .toLowerCase()
          .split(" ")
          .map((word) => word.charAt(0).toUpperCase() + word.slice(1))
          .join(" "),
        description,
        `${BASE_URL}/${slugify(item.description, {
          lower: true,
          replacement: "-",
          strict: true,
        })}/${item.itemID}`,
        imgUrl,
        parseFloat(item.Prices.ItemPrice[0].amount).toFixed(2),
        parseInt(item.ItemShops.ItemShop[0].qoh) <= 0 ? "Out of stock" : "In stock",
        "new",
        item.Manufacturer?.name,
        item.upc,
        item.manufacturerSku,
        item.ItemShops.ItemShop[0].qoh
      );

      return newItem;
    });

    await Item.saveAsXML(formattedItems);
    console.log("Done! 🎉");
  } catch (error) {
    console.error("There was an error: ", error);
  }
};

startApp();