@shopify/shopify-app-remix/dist/esm/server/authenticate/flow/authenticate.mjs

Shopify Remix - to simplify the building of Shopify Apps with Remix

import { adminClientFactory } from '../../clients/admin/factory.mjs';

function authenticateFlowFactory(params) {
    const { api, config, logger } = params;
    return async function authenticate(request) {
        logger.info('Authenticating flow request');
        if (request.method !== 'POST') {
            logger.debug('Received a non-POST request for flow. Only POST requests are allowed.', { url: request.url, method: request.method });
            throw new Response(undefined, {
                status: 405,
                statusText: 'Method not allowed',
            });
        }
        const rawBody = await request.text();
        const result = await api.flow.validate({
            rawBody,
            rawRequest: request,
        });
        if (!result.valid) {
            logger.error('Received an invalid flow request', { reason: result.reason });
            throw new Response(undefined, {
                status: 400,
                statusText: 'Bad Request',
            });
        }
        const payload = JSON.parse(rawBody);
        logger.debug('Flow request is valid, looking for an offline session', {
            shop: payload.shopify_domain,
        });
        const sessionId = api.session.getOfflineId(payload.shopify_domain);
        const session = await config.sessionStorage.loadSession(sessionId);
        if (!session) {
            logger.info('Flow request could not find session', {
                shop: payload.shopify_domain,
            });
            throw new Response(undefined, {
                status: 400,
                statusText: 'Bad Request',
            });
        }
        logger.debug('Found a session for the flow request', { shop: session.shop });
        return {
            session,
            payload,
            admin: adminClientFactory({ params, session }),
        };
    };
}

export { authenticateFlowFactory };
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