# 🚀 WAutomator — Enterprise WhatsApp Marketing & Automation Platform ## 📌 Project Description WAutomator is a scalable, multi-tenant SaaS platform designed to streamline business communication on WhatsApp using Meta’s official WhatsApp Cloud API. The platform enables organizations to create, manage, and automate high-volume messaging campaigns, integrate AI-powered chatbots, and gain actionable insights through real-time analytics—making it a complete solution for WhatsApp-based marketing and customer engagement. --- ## 🎯 Key Features ### 🏢 Multi-Tenant SaaS Architecture - Organization-based multi-tenancy - Role-Based Access Control (RBAC) - Team and user management system - Secure API key management for integrations --- ### 💬 WhatsApp Cloud API Integration - Integrated with Meta’s official WhatsApp Cloud API - Template message synchronization - Real-time webhook handling for delivery & read status - Reliable and scalable message delivery system --- ### 📣 Campaign Management - Create and manage bulk messaging campaigns - Personalized messages using dynamic variables - Schedule campaigns with queue-based execution - Campaign performance tracking --- ### 🤖 AI-Powered Chatbots - Integrated Google Gemini AI for intelligent responses - Context-aware automated conversations - Lead qualification and auto-replies - Extensible chatbot workflows --- ### 💳 Billing & Subscription System - Razorpay integration for payments - Subscription plan management - Automated billing and usage tracking - Credit-based messaging system --- ### 📊 Advanced Analytics - Real-time dashboard with key metrics: - Message delivery rate - Read rate - Engagement analytics - Data visualization for campaign performance --- ### ⚡ High-Performance Queue System - Built with BullMQ and Redis - Reliable background job processing - Scalable message queue for bulk operations - Retry and failure handling mechanisms --- ### 🔌 Developer API - Secure API access for third-party integrations - API key-based authentication - Enables custom workflows and automation --- ## 🛠️ Tech Stack ### Frontend - Next.js 15+ (App Router) - React 19 - Tailwind CSS v4 - Shadcn UI - Framer Motion - Zustand - TanStack Query (React Query) - Recharts --- ### Backend - NestJS (TypeScript) - PostgreSQL - Prisma ORM - Redis - BullMQ - Passport.js (JWT Authentication) --- ### Integrations - WhatsApp Cloud API - Razorpay - Google Gemini AI --- ### Infrastructure & Security - Docker & Docker Compose - Helmet (Security headers) - Rate Limiting (Throttler) - AES-256 encryption for sensitive data --- ## 🏗️ System Architecture Overview User Dashboard (Next.js) │ ▼ Backend API (NestJS) │ ├── WhatsApp Cloud API (Messaging) ├── Gemini AI (Chatbot Engine) ├── Razorpay (Billing) │ ▼ Queue System (BullMQ + Redis) │ ▼ PostgreSQL Database --- --- ## 📈 Impact - Enabled scalable WhatsApp marketing automation - Improved campaign efficiency through scheduling and queuing - Reduced manual effort with AI-powered automation - Delivered real-time insights for data-driven decision making --- ## 👨‍💻 My Role - Designed and developed full-stack SaaS architecture - Implemented WhatsApp Cloud API integration - Built campaign scheduling and queue processing system - Integrated AI chatbot using Gemini - Developed billing and subscription workflows - Designed scalable database and backend modules --- ## 💡 Key Learnings - Multi-tenant SaaS architecture design - Scalable queue systems using Redis & BullMQ - WhatsApp Cloud API integration & webhook handling - Secure API design and authentication - AI chatbot integration in real-world applications ---