Summary of "Build a Complete SaaS Platform with Next.js 13, React, Prisma, tRPC, Tailwind | Full Course 2023"

Video Title

Build a Complete SaaS Platform with Next.js 13, React, Prisma, tRPC, Tailwind | Full Course 2023

Overview

Josh, a software engineer, demonstrates building a full SaaS platform from scratch using modern web technologies including Next.js 13, React, Prisma, tRPC, Tailwind CSS, and more. The course covers all aspects of a SaaS app: landing page, authentication, PDF file upload and chat functionality, subscription plans with Stripe payments, and deployment.

Key Technological Concepts & Tools

Next.js 13: Utilizes the new app router, server and client components, dynamic routing, and middleware.
React: Functional components, hooks (useState, useEffect, useRef, useContext), and context API for state management.
TypeScript: Strong typing, interfaces, utility types (e.g., Awaited, Omit), and integration with tRPC.
Tailwind CSS: Utility-first styling, extended configuration, plugins for animation and typography.
tRPC: Type-safe API routes, infinite queries, optimistic updates, and integration with React Query.
Prisma: ORM for database schema, migrations, and queries with PlanetScale as the MySQL-compatible cloud database.
Kind Authentication: Secure passwordless authentication integrated with Next.js.
UploadThing: Managed file upload service wrapping AWS S3, integrated with Next.js API routes.
React Dropzone: Drag and drop file upload UI.
React PDF: Rendering PDFs in React with zoom, rotate, pagination, and full-screen support.
LangChain + Pinecone: Semantic querying of PDFs via vector embeddings for AI-powered chat.
OpenAI API: Streaming chat completions with GPT-3.5 Turbo for answering PDF queries.
Stripe: Subscription payments with customer and billing portal integration.
Vercel: Deployment platform with environment variables, GitHub integration, and serverless functions.

Product Features & Functionalities Built

Landing Page
- Responsive design with Tailwind CSS.
- Navigation bar with conditional rendering based on auth state.
- Pricing page with plans, features, and upgrade buttons.
- SEO optimized with custom metadata and favicons.
Authentication
- Passwordless email login via Kind.
- Sync authenticated users with Prisma database.
- Protected routes with Next.js middleware.
PDF Upload & Chat
- Drag and drop file upload with UploadThing.
- File size and page limits enforced per subscription plan.
- Real-time progress bar with simulated progress.
- PDF rendering with React PDF (zoom, rotate, pagination, full screen).
- Chat interface streaming AI responses in real time.
- Optimistic UI updates for instant message feedback.
- Infinite scroll loading for chat messages.
- Semantic search of PDF content using LangChain + Pinecone vector DB.
- AI answers generated via OpenAI GPT-3.5 Turbo with streaming.
Subscription & Payments
- Stripe subscription plans: Free and Pro.
- Stripe checkout session creation and billing portal.
- Webhook handling for subscription updates.
- UI reflects subscription status with ability to upgrade or manage plan.
- Limits on file size and pages per PDF vary by plan.
Deployment
- GitHub integration and Vercel deployment.
- Environment variables configured for production.
- Redirects and middleware configured for auth and routes.
- Stripe and Kind configured with deployed URLs and webhooks.

Tutorials & Guides Included

Step-by-step Next.js 13 project setup with TypeScript and Tailwind CSS.
Creating reusable UI components (MaxWidthWrapper, Button, Modal, Tooltip, etc.).
Implementing secure passwordless auth with Kind.
Setting up Prisma schema and syncing users/files/messages.
Integrating UploadThing for file uploads with drag & drop.
Rendering PDFs with React PDF and enhancing UX (zoom, rotate, full screen).
Building a chat UI with optimistic updates and infinite scroll.
Using LangChain and Pinecone for semantic PDF querying.
Streaming AI responses with OpenAI and just-ai package.
Creating subscription plans and payment flows with Stripe.
Deploying the full app on Vercel with environment variables and webhooks.
Adding SEO metadata, favicons, and social sharing images.
Responsive navigation including mobile menu with conditional auth links.

Summary of Main Components Built

LandingPage, PricingPage, DashboardPage, AuthCallbackPage, BillingPage
UI Components: MaxWidthWrapper, Navbar, MobileNav, UploadButton, PDFRenderer, ChatWrapper, Messages, ChatInput, UserAccountNav, UpgradeButton, BillingForm
API Routes via tRPC: auth, uploadThing