Why configure authorized domains for a YouTube clone?
Because auth providers only allow redirects from authorized domains. If you forget to add your deployed domain, auth redirects fail in production even though they work on localhost. Add your domain in the provider's console before deploying.
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More FAQs in How to Add User Authentication to a YouTube Clone in React
Choose an auth approach like Firebase, set up an AuthContext that tracks the user, protect routes with a ProtectedRoute component, build a login page, and configure authorized domains for production. Use the user to personalize content.
Use the signed-in user to support subscriptions to channels, likes with your account, and a watch history and watch later list tied to your user id. This turns a demo into a real, per-user experience.
Create a ProtectedRoute component that checks auth state and redirects unauthenticated users to login. Wrap pages that require login, like uploading a video or accessing a watch later list, in it.
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