const projectId = <your project_id from PA>;

const apiKey = <your api key from PA>;

const buff = new Buffer(`${projectId}:${apiKey}`);

const basicAuth = buff.toString('base64')

function sleep(ms) {

   return new Promise(resolve => setTimeout(resolve, ms));

}

async function getItems() {

   // receive items from the original system or read from a pre-prepared file

   return items;

}

function prepareData(items) {

   // format items in accordance with API requirements

   return formattedItems;

}

async function createItem(item) {

   const url = `https://store.xsolla.com/api/v2/project/${projectId}/admin/items/virtual_items`;



   return await fetch(url, {

       method: "POST",

       headers: {

           Authorization: "Basic " + basicAuth,

           "Content-Type": "application/json"

       },

       body: JSON.stringify(item),

   });

}

async function checkItemExist(sku) {

   const url = `https://store.xsolla.com/api/v2/project/${projectId}/admin/items/virtual_items/sku/${sku}`;

   const response = await fetch(url, {

       method: "GET",

       headers: {

           Authorization: "Basic " + basicAuth

       }

   });

   return response.status !== 404;

}

async function createItems(items) {

   let success = 0;

   let alreadyCreated = 0;

   for (let i = 0; i < items.length; i++) {

       const item = items[i];

       if (item['sku'] === undefined) {

           console.log(`${i} Field "sku" not specified`);

           continue;

       }

       const sku = item['sku'];

       if (await checkItemExist(sku)) {

           console.log(`${i} Item with sku "${sku}" already created`);

           alreadyCreated++;

           continue;

       }

       const response = await createItem(item);

       if (response.status === 201) {

           console.log(`${i} Item with sku "${sku}" successfully created`)

           success++;

       } else {

           const jsonData = await response.json();

           console.log(`${i} An error occurred while creating the items with sku "${sku}"`);

           console.log(jsonData);

       }

       // add a delay so as not to run into rate limits

       await sleep(500);

   }

   console.log(`${success} items out of ${items.length} created. ${alreadyCreated} items already existed`);

}

async function run() {

 const items = await getItems();

 const formattedItems = prepareData(items);

 await createItems(formattedItems);

}

import fetch from "node-fetch";

const projectId = <your project_id from PA>;
const apiKey = <your api key from PA>;
const buff = new Buffer(`${projectId}:${apiKey}`);
const basicAuth = buff.toString('base64')

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}

async function getItems() {
    // receive items from the original system or read from a pre-prepared file
    return items;
}

function prepareData(items) {
    // format items in accordance with API requirements
    return formatedItems;
}

async function createItem(item) {
    const url = `https://store.xsolla.com/api/v2/project/${projectId}/admin/items/virtual_items`;

    return await fetch(url, {
        method: "POST",
        headers: {
            Authorization: "Basic " + basicAuth,
            "Content-Type": "application/json"
        },
        body: JSON.stringify(item),
    });
}

async function isItemExisted(sku) {
    const url = `https://store.xsolla.com/api/v2/project/${projectId}/admin/items/virtual_items/sku/${sku}`;
    const response = await fetch(url, {
        method: "GET",
        headers: {
            Authorization: "Basic " + basicAuth
        }
    });
    return response.status !== 404;
}

async function createItems(items) {
    let success = 0;
    let alreadyCreated = 0;
    for (let i = 0; i < items.length; i++) {
        const item = items[i];
        if (item['sku'] === undefined) {
            console.log(`${i} Field "sku" not specified`);
            continue;
        }
        const sku = item['sku'];
        if (await isItemExisted(sku)) {
            console.log(`${i} Item with sku "${sku}" already created`);
            alreadyCreated++;
            continue;
        }
        const response = await createItem(item);
        if (response.status === 201) {
            console.log(`${i} Item with sku "${sku}" successfully created`)
            success++;
        } else {
            const jsonData = await response.json();
            console.log(`${i} An error occurred while creating the items with sku "${sku}"`);
            console.log(jsonData);
        }
        // add a delay so as not to run into rate limits
        await sleep(500);
    }
    console.log(`${success} items out of ${items.length} created. ${alreadyCreated} items already existed`);
}

async function run() {
  const items = await getItems();
  const formattedItems = prepareData(items);
  await createItems(formattedItems);
}

run();