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@shopify/shopify-app-remix

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

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{"version":3,"file":"auth-code-flow.mjs","sources":["../../../../../../../src/server/authenticate/admin/strategies/auth-code-flow.ts"],"sourcesContent":["import {\n CookieNotFound,\n GraphqlQueryError,\n HttpResponseError,\n InvalidHmacError,\n InvalidOAuthError,\n Session,\n Shopify,\n} from '@shopify/shopify-api';\n\nimport type {BasicParams} from '../../../types';\nimport {\n beginAuth,\n handleClientErrorFactory,\n redirectToAuthPage,\n redirectToShopifyOrAppRoot,\n redirectWithExitIframe,\n triggerAfterAuthHook,\n validateShopAndHostParams,\n} from '../helpers';\nimport {AppConfig, AppConfigArg} from '../../../config-types';\nimport {getSessionTokenHeader} from '../../helpers';\nimport {HandleAdminClientError} from '../../../clients';\nimport type {\n ApiConfigWithFutureFlags,\n ApiFutureFlags,\n} from '../../../future/flags';\n\nimport {AuthorizationStrategy, SessionContext, OnErrorOptions} from './types';\n\nexport class AuthCodeFlowStrategy<\n Config extends AppConfigArg,\n> implements AuthorizationStrategy {\n protected api: Shopify<\n ApiConfigWithFutureFlags<Config['future']>,\n ApiFutureFlags<Config['future']>\n >;\n\n protected config: AppConfig;\n protected logger: Shopify['logger'];\n\n public constructor({api, config, logger}: BasicParams) {\n this.api = api;\n this.config = config;\n this.logger = logger;\n }\n\n public async respondToOAuthRequests(request: Request): Promise<void | never> {\n const {api, config} = this;\n\n const url = new URL(request.url);\n const isAuthRequest = url.pathname === config.auth.path;\n const isAuthCallbackRequest = url.pathname === config.auth.callbackPath;\n\n if (isAuthRequest || isAuthCallbackRequest) {\n const shop = api.utils.sanitizeShop(url.searchParams.get('shop')!);\n if (!shop) throw new Response('Shop param is invalid', {status: 400});\n\n if (isAuthRequest) {\n throw await this.handleAuthBeginRequest(request, shop);\n } else {\n throw await this.handleAuthCallbackRequest(request, shop);\n }\n }\n\n if (!getSessionTokenHeader(request)) {\n // This is a document request that doesn't contain a session token. We check if the app is installed.\n // If the app isn't installed, we initiate the OAuth auth code flow.\n // Requests with a header can only happen after the app is installed.\n await this.ensureInstalledOnShop(request);\n }\n }\n\n public async authenticate(\n request: Request,\n sessionContext: SessionContext,\n ): Promise<Session | never> {\n const {api, config, logger} = this;\n\n const {shop, session} = sessionContext;\n\n if (!session) {\n logger.debug('No session found, redirecting to OAuth', {shop});\n await redirectToAuthPage({config, logger, api}, request, shop);\n } else if (!session.isActive(config.scopes)) {\n logger.debug(\n 'Found a session, but it has expired, redirecting to OAuth',\n {shop},\n );\n await redirectToAuthPage({config, logger, api}, request, shop);\n }\n\n logger.debug('Found a valid session', {shop});\n\n return session!;\n }\n\n public handleClientError(request: Request): HandleAdminClientError {\n const {api, config, logger} = this;\n return handleClientErrorFactory({\n request,\n onError: async ({session, error}: OnErrorOptions) => {\n if (error.response.code === 401) {\n throw await redirectToAuthPage(\n {api, config, logger},\n request,\n session.shop,\n );\n }\n },\n });\n }\n\n private async ensureInstalledOnShop(request: Request) {\n const {api, config, logger} = this;\n\n validateShopAndHostParams({api, config, logger}, request);\n\n const url = new URL(request.url);\n let shop = url.searchParams.get('shop');\n\n // Ensure app is installed\n logger.debug('Ensuring app is installed on shop', {shop});\n\n if (!(await this.hasValidOfflineId(request))) {\n logger.info(\"Could not find a shop, can't authenticate request\");\n throw new Response(undefined, {\n status: 400,\n statusText: 'Bad Request',\n });\n }\n\n const offlineSession = await this.getOfflineSession(request);\n const isEmbedded = url.searchParams.get('embedded') === '1';\n\n if (!offlineSession) {\n logger.info(\"Shop hasn't installed app yet, redirecting to OAuth\", {\n shop,\n });\n if (isEmbedded) {\n redirectWithExitIframe({api, config, logger}, request, shop!);\n } else {\n throw await beginAuth({api, config, logger}, request, false, shop!);\n }\n }\n\n shop = shop || offlineSession.shop;\n\n if (config.isEmbeddedApp && !isEmbedded) {\n try {\n logger.debug('Ensuring offline session is valid before embedding', {\n shop,\n });\n await this.testSession(offlineSession);\n\n logger.debug('Offline session is still valid, embedding app', {shop});\n } catch (error) {\n await this.handleInvalidOfflineSession(error, request, shop);\n }\n }\n }\n\n private async handleAuthBeginRequest(\n request: Request,\n shop: string,\n ): Promise<never> {\n const {api, config, logger} = this;\n\n logger.info('Handling OAuth begin request', {shop});\n\n // If we're loading from an iframe, we need to break out of it\n if (\n config.isEmbeddedApp &&\n request.headers.get('Sec-Fetch-Dest') === 'iframe'\n ) {\n logger.debug('Auth request in iframe detected, exiting iframe', {shop});\n throw redirectWithExitIframe({api, config, logger}, request, shop);\n } else {\n throw await beginAuth({api, config, logger}, request, false, shop);\n }\n }\n\n private async handleAuthCallbackRequest(\n request: Request,\n shop: string,\n ): Promise<never> {\n const {api, config, logger} = this;\n\n logger.info('Handling OAuth callback request', {shop});\n\n try {\n const {session, headers: responseHeaders} = await api.auth.callback({\n rawRequest: request,\n expiring: config.future.expiringOfflineAccessTokens,\n });\n\n await config.sessionStorage!.storeSession(session);\n\n if (config.useOnlineTokens && !session.isOnline) {\n logger.info('Requesting online access token for offline session', {\n shop,\n });\n await beginAuth({api, config, logger}, request, true, shop);\n }\n\n logger.debug('Request is valid, loaded session from OAuth callback', {\n shop: session.shop,\n isOnline: session.isOnline,\n });\n\n await triggerAfterAuthHook({api, config, logger}, session, request, this);\n\n throw await redirectToShopifyOrAppRoot(\n request,\n {api, config, logger},\n responseHeaders,\n );\n } catch (error) {\n if (error instanceof Response) throw error;\n\n throw await this.oauthCallbackError(error, request, shop);\n }\n }\n\n private async getOfflineSession(\n request: Request,\n ): Promise<Session | undefined> {\n const offlineId = await this.getOfflineSessionId(request);\n return this.config.sessionStorage!.loadSession(offlineId!);\n }\n\n private async hasValidOfflineId(request: Request) {\n return Boolean(await this.getOfflineSessionId(request));\n }\n\n private async getOfflineSessionId(\n request: Request,\n ): Promise<string | undefined> {\n const {api} = this;\n const url = new URL(request.url);\n const shop = url.searchParams.get('shop');\n\n return shop\n ? api.session.getOfflineId(shop)\n : api.session.getCurrentId({isOnline: false, rawRequest: request});\n }\n\n private async testSession(session: Session): Promise<void> {\n const {api} = this;\n\n const client = new api.clients.Graphql({\n session,\n });\n\n await client.request(`#graphql\n query shopifyAppShopName {\n shop {\n name\n }\n }\n `);\n }\n\n private async oauthCallbackError(\n error: Error,\n request: Request,\n shop: string,\n ) {\n const {logger} = this;\n logger.error('Error during OAuth callback', {shop, error: error.message});\n\n if (error instanceof CookieNotFound) {\n return this.handleAuthBeginRequest(request, shop);\n }\n\n if (\n error instanceof InvalidHmacError ||\n error instanceof InvalidOAuthError\n ) {\n return new Response(undefined, {\n status: 400,\n statusText: 'Invalid OAuth Request',\n });\n }\n\n return new Response(undefined, {\n status: 500,\n statusText: 'Internal Server Error',\n });\n }\n\n private async handleInvalidOfflineSession(\n error: Error,\n request: Request,\n shop: string,\n ) {\n const {api, logger, config} = this;\n if (error instanceof HttpResponseError) {\n if (error.response.code === 401) {\n logger.info('Shop session is no longer valid, redirecting to OAuth', {\n shop,\n });\n throw await beginAuth({api, config, logger}, request, false, shop);\n } else {\n const message = JSON.stringify(error.response.body, null, 2);\n logger.error(`Unexpected error during session validation: ${message}`, {\n shop,\n });\n\n throw new Response(undefined, {\n status: error.response.code,\n statusText: error.response.statusText,\n });\n }\n } else if (error instanceof GraphqlQueryError) {\n const context: Record<string, string> = {shop};\n if (error.response) {\n context.response = JSON.stringify(error.body);\n }\n\n logger.error(\n `Unexpected error during session validation: ${error.message}`,\n context,\n );\n\n throw new Response(undefined, {\n status: 500,\n statusText: 'Internal Server Error',\n });\n }\n 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