Ai Writter - Automate document writting publish to platforms

Description

Ai Doc Writter is such a platform that generates content using LLM depending on users topic and detailed prompt and then export to different kind of documents like PDF, Word, Google docs, Google Sheets etc or upload directly to platforms like Google Drive, Woocommerce and so one.

It saves users time effort by generating high quality content using LLMs like Open Ai, Claude, Gemini, Lama etc and automate repetitive work.

It focuses on subscription based SASS model built with Node.js, Express.js, Typescript, Next.js, Langgraph.js.

Project Links

Live Demo

• Frontend: https://assignment-writer-app.vercel.app
• Backend API: https://assignment-writer-server.onrender.com

GitHub

• Frontend Repository: https://github.com/nabilsiddik/Assignment-Writer-App
• Backend Repository: https://github.com/nabilsiddik/Assignment-Writer-Server

Key Features

• AI Content Generation: High quality content generation using LLMs like Open Ai, Claude, Gemini, Lama etc and automate repetitive work.
• Export Import Products: Export product from AMAZON, ALIEXPRESS, DARAZ and import to google sheet or direct upload to woocommerce after ai writter.
• Dynamic Tool Registry: Very Scalable code to add new document types in langgraph in minutes without logic changes.
• Multi-Format Export: Binary streaming for .docx, HTML-to-PDF via Puppeteer, and Google Docs, google drive, google sheet, woocommerce API integration.
• Subscription Lifecycle: Full Stripe subscription implemented with different type plans.
• Authentication & Authorization: JWT access token and refresh token based authentication and role based authorization and redirect with email and reset password otp verification proccess.
• Rate Limit: Upstash Redis for global rate-limiting depending on subscription plans.
• Middleware: Different type of middlewares to make the platform fully secured like checkAuth, checkSubscriptionPlan, checkRateLimit etc.
• Storage Integration: Upload document to cloudinary, delete from cloudinary if necessary to save cost.
• Advance Dashboard Analytics: Unlike random dashbaord analytics, it includes deep details like how many tokens are using for each input and output and cost for each response. Platform revenue based on subscriptions and LLM cost etc.

Tools & Technologies

• Runtime: Node.js (v20+)
• Language: TypeScript
• Framework: Express.js, Next.js
• Database: PostgreSQL (Prisma ORM)
• AI Stack: LangChain, LangGraph JS, Claude 3.5 (Anthropic), Open Ai, Gemini, Lama etc.
• Security: JWT, OAuth 2.0 (Google)
• Payments: Stripe API
• Rate Limit: Upstash Redis
• Storage: Cloudinary, Google Drive
• HTML to PDF: Puppeteer
• Animation & Icon: Framer motion, Lucid React, React Icon Library

API Endpoints

User Management

Method	Endpoint	Description
POST	/user/register	Register a new user with profile image
GET	/user	Get all users (Admin, Super Admin)
GET	/user/profile	Get authenticated user's profile
GET	/user/me	Get authenticated user information
GET	/user/:id	Get user details by ID (Admin, Super Admin)
PATCH	/user/:id	Update authenticated user's profile
DELETE	/user/delete	Delete authenticated user's account
PATCH	/user/soft-delete/:id	Soft delete a user (Admin, Super Admin)
PATCH	/user/update-status/:id	Update user status (Admin, Super Admin)

---

Authentication

Method	Endpoint	Description
POST	/auth/login	Login with email and password
POST	/auth/verify-email	Verify email OTP
POST	/auth/resend-otp	Resend email verification OTP
POST	/auth/forgot-password	Send password reset email
POST	/auth/reset-password	Reset password
PATCH	/auth/change-password	Change authenticated user's password
GET	/auth/google	Trigger Google OAuth 2.0 Flow
GET	/auth/google/callback	Google OAuth callback
GET	/auth/facebook	Trigger Facebook OAuth Flow
GET	/auth/facebook/callback	Facebook OAuth callback
GET	/auth/github	Trigger GitHub OAuth Flow
GET	/auth/github/callback	GitHub OAuth callback

---

AI Document Generation

Method	Endpoint	Description
GET	/document	Get all generated documents
GET	/document/my-generations	Get authenticated user's generations
GET	/document/generation-details/:generationId	Get generation details
POST	/document/generate-content	Generate AI document/content
POST	/document/:id/generate-pdf	Generate PDF document
POST	/document/:id/export-google-docs	Export document to Google Docs
POST	/document/:id/download-docx	Download document as Word (.docx)
POST	/document/:id/save-to-drive	Save document to Google Drive
POST	/document/:id/publish-woo	Publish document to WooCommerce
POST	/document/connect-woocommerce	Connect WooCommerce store
GET	/document/my-woo-store	Get connected WooCommerce store

---

Stripe Subscription

Method	Endpoint	Description
POST	/stripe/create-subscription	Create Stripe subscription checkout session

---

Admin Dashboard

Method	Endpoint	Description
GET	/admin/dashboard-stats	Get admin dashboard statistics
GET	/admin/financial-overview	Get financial overview
GET	/admin/users	Get all users
GET	/admin/users/:id	Get single user details
GET	/admin/subscriptions	Get all subscriptions
GET	/admin/subscriptions/:id	Get single subscription details
GET	/admin/transactions	Get all transactions
GET	/admin/transactions/:id	Get single transaction details
GET	/admin/documents	Get all generated documents
GET	/admin/documents/:id	Get single generated document

Backend Folder Structure

src/
├── app/
│   ├── ai/                     # AI prompts, agents & generation logic
│   ├── config/                 # Environment configuration
│   ├── errorHelpers/           # Global error handling utilities
│   ├── interfaces/             # Shared TypeScript interfaces
│   ├── middlewares/            # Authentication, validation & custom middlewares
│   ├── modules/
│   │   ├── admin/              # Admin APIs (Dashboard, Users, Documents)
│   │   ├── analysis/           # AI content analysis module
│   │   ├── assignment/         # Document generation & export
│   │   ├── auth/               # Authentication & OAuth
│   │   ├── stripe/             # Stripe subscription & payment
│   │   └── user/               # User management
│   ├── routes/                 # Application route registry
│   └── utils/                  # File upload, helpers & integrations
├── generated/                  # Prisma generated client
├── lib/                        # Shared libraries & external clients
├── types/                      # Global TypeScript types
├── app.ts                      # Express application
├── server.ts                   # Application entry point
├── prisma.config.ts            # Prisma configuration
└── render-build.ts             # Render deployment build script

Frontend Folder Structure

app/
├── (mainLayout)/               # Shared public layout
├── favicon.ico
├── globals.css
└── layout.tsx                  # Root layout

animations/                     # Framer Motion animations

components/                     # Reusable UI components

config/                         # Frontend configuration

hooks/                          # Custom React hooks

lib/                            # Utilities & helper functions

public/                         # Static assets

services/
├── admin/                      # Admin API services
├── ai/                         # AI generation services
├── auth/                       # Authentication services
├── generation/                 # Document generation services
├── subscription/               # Stripe subscription services
└── user/                       # User-related services

types/                          # Global TypeScript types

zod/                            # Zod validation schemas

proxy.ts                        # API proxy configuration

next.config.ts                  # Next.js configuration

package.json                    # Project dependencies

Backend Installation Guide

# Clone the repository
git clone https://github.com/your-username/repo-name.git

# Navigate to the project directory
cd project-folder

# Install dependencies
npm install

# Install Puppeteer Chrome
npx puppeteer browsers install chrome

# Generate Prisma Client
npx prisma generate

# Run database migrations
npx prisma migrate dev

# Start development server
npm run dev

# Build for production
npm run build

# Start production server
npm start

# Environment variables
PORT=
NODE_ENV=
DATABASE_URL=

# AI Models
GEMINI_API_KEY=
FREEMODEL_API_KEY=
OPENROUTER_API_KEY=

UPSTASH_REDIS_URL=
UPSTASH_REDIS_TOKEN=

# SECURITY
SALT_ROUND=

# CLIENT
CLIENT_URL=

# JWT
JWT_ACCESS_SECRET=
JWT_ACCESS_SECRET_EXPIRES_IN=

JWT_REFRESH_SECRET=
JWT_REFRESH_SECRET_EXPIRES_IN=

JWT_RESET_PASS_SECRET=
JWT_RESET_PASS_SECRET_EXPIRES_IN=

# CLOUDINARY
CLOUDINARY_CLOUD_NAME=
CLOUDINARY_API_KEY=
CLOUDINARY_API_SECRET=

# STRIPE
STRIPE_SECRET_KEY=
STRIPE_WEBHOOK_SECRET=
STRIPE_STARTER_PRICE_ID=
STRIPE_PREMIUM_PRICE_ID=

# EMAIL SENDER
EMAIL_SENDER_EMAIL=
EMAIL_SENDER_APP_PASS=

# SOCIAL LOGIN
GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=
GOOGLE_REDIRECT_URI=

Frontend Installation Guide

# Clone the repository
git clone https://github.com/your-username/repo-name.git

# Navigate to the project directory
cd project-folder

# Install dependencies
npm install

# Start development server
npm run dev

# Build for production
npm run build

# Start production server
npm start

# Environment variables
NEXT_PUBLIC_SERVER_URL=
NODE_ENV=

# jwt
JWT_ACCESS_SECRET=
JWT_REFRESH_SECRET=

NEXT_PUBLIC_STRIPE_STARTER_PRICE_ID=
NEXT_PUBLIC_STRIPE_PREMIUM_PRICE_ID=