Build an AI-Powered SaaS with Next.js 16, ChatGPT API & RAG

Install Node.js from the official site, verify with node -v, and set up Visual Studio Code with essential extensions like auto close tag and material icon theme.

Next.js, a React-based framework by Vercel, enables server-side rendering and static site generation, simplifying full-stack web app development.

Contrast React.js, a JavaScript library for building user interfaces, with Next.js, a React-based framework offering server-side rendering, static generation, file-based routing, and distinct data-fetching approaches.

Create a fresh Next.js project using npx create next app, configure Tailwind CSS, and run development server with npm run dev, exploring file structure and build steps.

Explore the next.js project structure, including the next folder, public assets, app folder with layout.js, and global css setup. Learn to build for production, integrate tailwind, and run dev server.

Define a default root layout and a page.js to render home, about, and profile routes in Next.js. Create functional components with rsc and h1 headings using global and tailwind CSS.

Learn how to load static assets in a Next.js project by placing a demo.png in public/images and referencing it in an image tag with alt text and width and height.

Explore global and module CSS in a Next.js 16 project, adding global styles in layout.js and creating component-scoped module CSS for pages like profile and about.

Explore client-side rendering and server-side rendering in Next.js 16 with a live example that fetches dummy json data using useEffect, renders product details, and contrasts client versus server rendering.

Learn to implement server side rendering in Next.js by converting client side data fetches to a server fetch, returning json and rendering fully on the server.

Learn when to use server components versus client components in Next.js, including data fetching on the server, keeping keys secure, and using client components for interactive events.

Balance server-side and client-side rendering, and use the use client directive to enable client-only code, including onclick interactions and alerts.

Explore how Next.js routing works through the app folder, where routes are created by folder names like home, about, and contact and loaded by page.js or page.jsx components.

Explore nested routing in Next.js by creating brand, apple, and iphone folders with page.jsx files, loading corresponding pages such as this is brand page and this is apple page.

Create a reusable navigation menu using a link component in a Next.js based app, wiring home, about, admin, and contact routes and nested routes like brand/apple/iphone.

Install and integrate the next n progress bar in a Next.js project, load it globally on route changes, and customize color, height, and spinner.

Learn to manage an active link in a Next.js 16 app by using global css and use path name to apply conditional classes on home, about, admin, and contact paths.

Explore how to pass and retrieve query parameters with Next.js Link, using path names, query properties, and use of search params to display name and price on the about page.

Learn to pass and read query data with use search pattern in Next.js navigation, extracting name and price from path name and query, and apply use client to fix rendering.

Explore how the next.js link component uses href, replace, and prefetch to control navigation behavior, history storage, and data fetching for faster, streamlined page transitions.

Learn to programmatically navigate with useRouter in Next.js, using push, replace, refresh, back, forward, and prefetch, pass query params, and manage client-side routing alongside link components.

Explore how to balance server components and client components in Next.js, securing data fetching and database operations on the server while optimizing performance with minimized client bundles.

Explore why client components enable on click and on change interactivity in Next.js, using the use client directive, and understand pre-rendering on the server with hydration on the client.

Learn to configure Next.js with a base path and environment variables using Next.config.mjs or .env, and distinguish server and client components for secure API keys.

Learn to configure headers in Next.js with an async headers function, passing key-value data to specific routes like home and about, and observe request-response headers in the dev server.

Configure and secure headers for a Next.js app by applying x-frame-options and content security policy, enabling iframe controls, script and style sources, and preventing clickjacking.

Learn to configure header security with content security policy and permission policy, controlling camera, microphone, geolocation, and browsing topics, and implement strict transport security with preload and include subdomains.

Explore header security configurations in Next.js, including x content type option to control file downloads, hiding the x powered by header, and managing page extensions and production build output.

Explore next.js connection keep alive and http agent options for reusing server connections. Understand compression for rendering content and static files, and how to enable or disable it.

Optimize images in next.js using image component, load from public assets or third-party domains, configure domains in next.config.js, and apply responsive, fixed, or priority layouts with webp conversion for performance.

Explore font optimization in Next.js using Roboto from Google Fonts. Apply a global font variable across the app via an HTML class and CSS.

Explore loading google fonts and adding a local sunshine tropical font in a Next.js project, organizing fonts folder, defining font variables, and applying fonts via global styles and component classes.

Learn how to load cdn scripts in a Next.js app by adding a script tag in the main layout and including cdn links like xeos or bootstrap, then verify loading.

Explore how middleware in Next.js sits at the center of requests, enabling authentication and authorization, conditional redirects, and server side rewriting to control access to admin and other pages.

Explore how to set up and test Next.js middleware, pass requests through next(), log request data, and implement redirects and matchers to route to home, about, and admin pages.

Learn how to customize Next.js 404 not found pages by creating a not-found.js, choosing server or client components, and displaying the requested path with use path and use param.

Build an ai-powered book summarize SaaS with Next.js 16 and the ChatGPT API, generating summaries and audio. Explore admin and user dashboards to upload books, manage reviews, and handle subscriptions.

Install and verify Node.js, set up the environment, and begin building an ai-powered book summary saas with Next.js 16 and the ChatGPT API, following step-by-step, across Windows, Mac, and Linux.

Set up xampp to run a local mysql database, start apache and mysql, and use phpmyadmin to create the database named book wise for the project.

set up VS Code extensions for efficient coding, including auto close tag, auto rename tag, ES6, npm intelligence, Postman, Tailwind CSS intelligence, and Pisma, to support the ai-powered saas project.

Initialize a new Next.js 16 project with pnpx create next app, name it book wise, enable typescript, tailwind css, app router, and run npm run dev on localhost:3000.

Install essential dependencies for a Next.js 16 AI SaaS, including Prisma, NextAuth beta 5, Prisma adapter, OpenAI, UUID, Formidable, mysql2, and schema validation plus toast tooling.

Create and configure a .env file to manage database url, OpenAI API key, and app settings for a Next.js project running on localhost:3000.

Set up tailwind css configuration for a Next.js project by downgrading to v3.4, updating postcss, creating tailwind config and global css, and validating styles on multiple pages.

Create a structured project skeleton by adding components, library, types, and app/api folders, plus nexus group routes for admin auth, admin dashboard, and user.

Learn to push your project to GitHub, set up a repository, configure git ignore for env and node_modules, and push with git bash to share lecture-by-lecture code.

Learn Prisma ORM essentials for a Node.js and TypeScript app, from defining models and migrations to using the Prisma client for find unique, find many, create, update, and delete operations.

Initialize prisma in the project, install and run npx prisma init to create prisma files, configure mysql as the data source, update the database url, then create the user table.

Design a Prisma user table with fields like id, email, password hash, full name, and role. Define enums for user role and subscription status with defaults and field maps.

Define a user table and related tables to model one-to-many and one-to-one relationships, including books created by user, reviews, favorites, reading history, payment transitions, subscriptions orders, and admin activity logs.

Continuing the database schema, the lecture defines user, category, book, and book summary tables. It details fields like id, name, slug, description, text, is_active, created_at, and a category-to-book relationship.

Builds and validates a comprehensive database schema with book, chapter, review, user favorites, reading history, payment transaction, and subscription tables using prisma db push and MySQL.

Create and push new database tables, like system setting with enum fields, using prisma db push to manage schema updates for an ai-powered saas.

Design a simple home page layout using Tailwind CSS in a Next.js app, outlining header, navigation, and future user and admin dashboards before implementing authentication.

Create a responsive homepage layout with tailwind css, including sign in, get started, and register actions, plus login routes and a hero with features.

Explore how next auth v5, now authjs, provides a complete authentication solution for a Next.js app by handling login, logout, sessions, and protected routes.

Set up a next.js auth session provider in tsx and enable client-side rendering. Integrate the next-auth react provider into the app layout for authentication in the ai-powered saas project.

Configure Next.js 16's next auth with credentials provider and prisma adapter, wire sign in and sign out handlers, and prepare jwt-based session, mapping email and password fields for secure login.

Develop password verification by hashing and comparing passwords, return a user object with id, email, full name, role, and subscription tier, and configure jwt tokens and session data for login.

Create and refine auth configuration in Next.js by defining user role and subscription style types, augmenting next-auth types, and wiring Prisma client data into the session interface.

Implement and configure next-auth with Prisma in a Next.js 16 SaaS, set up a global Prisma client, fix a subscription style typo, and prepare sign-in and sign-out flows.

Set up a Next.js api route with a catch-all next-auth handler and gate or post exports. Configure a Prisma client in the library to enable user registration and database access.