Install headless Optimizely Forms JavaScript SDK for the client app

Precondition: npm install -g typescript

1. Create a React app template.

   TypeScript

   npx create-react-app headless-form --template typescript
   cd headless-form

2. Install Javascript SDK. Create a file .npmrc with content to download the package from GitHub.

   TypeScript

   @episerver:registry=https://pkgs.dev.azure.com/EpiserverEngineering/netCore/_packaging/HeadlessForms/npm/registry

   
   
   TypeScript

   npm install @episerver/forms-sdk @episerver/forms-react react-router-dom @types/react-router-dom

   📘

   Note

   Replace the react-router-dom with version =5.3.4.

3. Create file .env with content.

   TypeScript

   REACT_APP_ENDPOINT_GET_FORM_BY_PAGE_URL=http://localhost:8000/api/React/GetFormInPageByUrl?url=
   REACT_APP_HEADLESS_FORM_BASE_URL=http://localhost:8000/
   REACT_APP_AUTH_BASEURL=http://localhost:8000/api/episerver/connect/token

4. Add code to \src\App.tsx.

   TypeScript

   import "./App.css";
   import { useFetch } from "./useFetch";
   import { Form, FormLogin } from "@episerver/forms-react";
   import {
     FormCache,
     FormConstants,
     IdentityInfo,
     extractParams,
   } from "@episerver/forms-sdk";
   import { useState } from "react";
   import { useHistory, useLocation } from "react-router-dom";
   
   function App() {
     const location = useLocation();
     const { language } = extractParams(window.location.pathname);
     const url = `${process.env.REACT_APP_ENDPOINT_GET_FORM_BY_PAGE_URL}${location.pathname}`;
   
     const { data: pageData, loading } = useFetch(url);
   
     const formCache = new FormCache();
     const [identityInfo, setIdentityInfo] = useState<IdentityInfo>({
       accessToken: formCache.get<string>(FormConstants.FormAccessToken),
     } as IdentityInfo);
   
     const history = useHistory();
   
     const handleAuthen = (identityInfo: IdentityInfo) => {
       setIdentityInfo(identityInfo);
     };
   
     return (
       <div className="App">
         {loading && <div className="loading">Loading...</div>}
   
         {!loading && pageData && (
           <>
             <h1>{pageData.title}</h1>
             <div className="main">
               <div className="left">
                 {pageData.formKeys.map((c: any) => (
                   <Form
                     key={c.reference.key}
                     formKey={c.reference.key}
                     language={language ?? "en"}
                     baseUrl={process.env.REACT_APP_HEADLESS_FORM_BASE_URL ?? "/"}
                     identityInfo={identityInfo}
                     history={history}
                     currentPageUrl={pageData.pageUrl}
                   />
                 ))}
               </div>
               <div className={`right`}>
                 <h2>Login</h2>
                 <FormLogin
                   clientId="TestClient"
                   authBaseUrl={process.env.REACT_APP_AUTH_BASEURL ?? ""}
                   onAuthenticated={handleAuthen}
                 />
               </div>
             </div>
           </>
         )}
       </div>
     );
   }
   
   export default App;
   

5. Remove App.test.tsx file.

6. Update code \src\index.tsx.

   TypeScript

   import React from "react";
   import ReactDOM from "react-dom/client";
   import "./index.css";
   import App from "./App";
   import { BrowserRouter as Router, Route, Switch } from "react-router-dom";
   
   const root = ReactDOM.createRoot(
     document.getElementById("root") as HTMLElement
   );
   root.render(
     <React.StrictMode>
       <Router>
         <Switch>
           <Route path="/">
             <App />
           </Route>
         </Switch>
       </Router>
     </React.StrictMode>
   );

7. Add file \src\useFetch.ts.

   TypeScript

   import { useEffect, useState } from "react";
   
   export const useFetch = (url: string) => {
     const [data, setData] = useState<any>(null);
     const [loading, setLoading] = useState<boolean>(false);
     const [error, setError] = useState<any>(null);
   
     useEffect(() => {
       const fetchData = async () => {
         setLoading(true);
         fetch(url)
           .then(async (response: Response) => {
             if (response.ok) {
               setData(await response.json());
             }
           })
           .catch((err: any) => {
             setError(err);
           })
           .finally(() => {
             setLoading(false);
           });
       };
   
       if (!loading) {
         fetchData();
       }
   
       // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [url]);
   
     return { data, loading, error };
   };
   

8. Run client site.

   TypeScript

   npm start

9. Change the frontend's port to ClientApp's port on ManagementSite.

   • Update appsettings.json file.
   • Update on Manage Websites.
   • Use http instead of https on launchSettings.json.