Meet

This is my pet project to practice receiving Ethereum payments using a smart contract. It involves developing the frontend, backend, infrastructure, and the smart contract itself. The project is fully deployed with automated pipelines for:

• Planning, creating, and destroying infrastructure using Terraform.
• Deploying the Next.js frontend, which utilizes Next.js server APIs.
• Deploying the Express.js backend and applying migrations on the RDS instance.
• Deploying the smart contract on the Ethereum network.
• Using LLMs to generate dynamic onboarding documents tailored to the user's situation.
• Sending transactional emails using nodemailer.

Project Structure

The project is organized into several key components:

Backend

• Language/Framework: Express, Sequelize, HuggingFace inference client, nodemailer, etc.
• Key Files:
  • app.js: The main application file.
  • Dockerfile: Used for containerizing the backend application.
  • package.json: Lists dependencies and scripts for the backend.
• Directories:
  • models/: Contains database models.
  • routes/: Defines API routes.
  • config/: Configuration files for the application.
  • migrations/ and seeders/: For database migrations and seeding.
• Usage of LLMs:
  • The HuggingFace inference client generates tutorials for users in different countries, considering the availability of different exchanges.

Frontend

• Language/Framework: Next.js
• Key Files:
  • Dockerfile: Used for containerizing the frontend application.
  • package.json: Lists dependencies and scripts for the frontend.
  • next.config.ts: Configuration for Next.js.
• Directories:
  • app/: Main application source code.
  • public/: Static files.

Infrastructure

• Tools: Terraform for infrastructure as code, Docker, AWS EC2, and RDS.
• Key Files:
  • ec2.tf, rds.tf: Terraform configuration for AWS resources.
  • ec2setup.sh: Script for setting up EC2 instances.
  • provider.tf: Specifies the provider configuration.

Smart Contract

• Tools: Solidity, Foundry, Etherscan for verification.
• Key Files:
  • src/: Contains smart contract source files.
  • test/: Contract test files.

GitHub Actions, Secrets, Env vars

• Workflows:
  • deploy-infra.yml: Terraform workflow for infrastructure deployment.
  • deploy-backend.yml: Backend deployment workflow.
  • deploy-frontend.yml: Frontend deployment workflow.
  • deploy-contract.yml: Smart contract deployment workflow.

Domain and DNS

• Domain Registration: NameCheap for domain registration and management.
• DNS and SSL: CloudFlare for DNS management and SSL certificates.
• Key Features:
  • Free SSL certificates through CloudFlare.
  • DDoS protection.