const Koa = require('koa');
const Router = require('koa-router');
const views = require('koa-views');
const serve = require('koa-static');
const path = require('path');
require('@shopify/shopify-api/adapters/web-api');
const { shopifyApi, LATEST_API_VERSION } = require('@shopify/shopify-api');
const { MemorySessionStorage } = require('@shopify/shopify-app-session-storage-memory');
const dotenv = require('dotenv');

dotenv.config();

const app = new Koa();
const router = new Router();

const shopify = shopifyApi({
    apiKey: process.env.SHOPIFY_API_KEY,
    apiSecretKey: process.env.SHOPIFY_API_SECRET,
    scopes: process.env.SHOPIFY_SCOPES.split(','),
    hostScheme: "https",
    hostName: process.env.SHOPIFY_HOST.replace(/^https:///, ''),
    apiVersion: LATEST_API_VERSION,
    isEmbeddedApp: true,
    sessionStorage: new MemorySessionStorage(),
    level: "debug",
});

router.get('/auth', async (ctx) => {
    try {
        const sanitizedShop = shopify.utils.sanitizeShop(ctx.query.shop, true);

        const redirectUrl = await shopify.auth.begin({
            shop: sanitizedShop,
            callbackPath: '/auth/callback',
            isOnline: false,
            rawRequest: ctx.req,
            rawResponse: ctx.res,
        });

        if (!redirectUrl) {
            throw new Error('Failed to get redirect URL from Shopify API');
        }

        console.log('Redirect URL:', redirectUrl);
        ctx.redirect(redirectUrl);
    } catch (error) {
        console.error('Error during /auth:', error);
        ctx.status = 500;
        ctx.body = 'Auth Error';
    }
});

router.get('/auth/callback', async (ctx) => {
    try {

        const session = await shopify.auth.callback({
            rawRequest: ctx.req,
            rawResponse: ctx.res,
            query: ctx.query,
        });

        console.log('Access Token:', session.accessToken);
        console.log('Shop Name:', session.shop);
        console.log('Session ID:', session.id);

        await shopify.sessionStorage.storeSession(session);

        ctx.redirect(`/?shop=${session.shop}`);
    } catch (error) {
        console.error('Error during auth callback:', error);
        ctx.status = 500;
        ctx.body = 'Auth Callback Error';
    }
});

router.get('/', async (ctx) => {
    await ctx.render('app', {
        apiKey: process.env.SHOPIFY_API_KEY,
        shop: ctx.query.shop
    });
});

app.use(serve(path.join(__dirname, 'public')));

app.use(views(path.join(__dirname, 'views'), {
    extension: 'ejs'
}));

app.use(router.routes()).use(router.allowedMethods());

app.listen(3060, () => {
    console.log('App listening at http://localhost:3060');
});

hi,

above is my code, i am getting the following error,
Auth Error
[shopify-api/INFO] Beginning OAuth | {shop: ********.myshopify.com, isOnline: false, callbackPath: /auth/callback}
Error during /auth: TypeError: request.headers.entries is not a function or its return value is not iterable

please advise what am i doing wrong.