PayGo-Backend

Slide 1 – Header / Project Title

Title: PayGo Backend 🚀 Subtitle: Node.js & Express backend for a fintech wallet Visuals: Wallet icon, Paystack logo, simple background Description: A Node.js & Express backend for PayGo, a fintech wallet application with:

User authentication

Wallet management

Paystack integration

Transaction history

Slide 2 – Table of Contents

Features

Tech Stack

Setup & Installation

Environment Variables

API Endpoints

Paystack Webhooks

Testing

Deployment

License

Slide 3 – Features ✨

Icons + Bullets for Visual Appeal

🔑 User authentication (register, login, forgot/reset password)

📨 OTP verification for signup & password reset

💰 Wallet management (balance, manual & Paystack funding)

🔄 Paystack integration for wallet top-ups

📜 Transaction logging (credit/debit)

💳 Wallet-to-wallet transfers with PIN verification

👤 Admin & profile routes for management

📧 Email notifications for wallet funding & account actions

Slide 4 – Tech Stack 🛠️

Table or 3 columns with icons

Backend Database Payments & Email Docs Node.js + Express MongoDB (Mongoose) Paystack API Swagger UI JWT Authentication Atlas Nodemailer Slide 5 – Setup & Installation ⚡

Step-by-step with code blocks

1️⃣ Clone the repo

git clone https://github.com/Lecksikerm/PayGo-Bakend cd paygo-backend

2️⃣ Install dependencies

npm install

3️⃣ Create .env file (see Environment Variables)

4️⃣ Run development server

npm run dev

5️⃣ Run production server

npm start

Slide 6 – Environment Variables 🗝️ Key Description PORT Server port (e.g., 5000) MONGO_URI MongoDB connection string JWT_ACCESS_SECRET JWT secret for access tokens JWT_REFRESH_SECRET JWT secret for refresh tokens JWT_ACCESS_SECRET_EXPIRY Access token expiry (1d) JWT_REFRESH_SECRET_EXPIRY Refresh token expiry (7d) CLOUDINARY_CLOUD_NAME Cloudinary cloud name CLOUDINARY_API_KEY Cloudinary API key CLOUDINARY_API_SECRET Cloudinary API secret PAYSTACK_PUBLIC_KEY Paystack public key PAYSTACK_SECRET_KEY Paystack secret key PAYSTACK_BASE_URL Paystack API base URL BACKEND_URL Public backend URL MAIL_HOST SMTP host MAIL_PORT SMTP port MAIL_USER SMTP username MAIL_PASS SMTP password MAIL_FROM Default sender email

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Slide 7 – API Endpoints (Authentication) 🔐 Endpoint Method Description /api/auth/register POST Register user & send OTP /api/auth/verify-otp POST Verify OTP /api/auth/login POST Login user /api/auth/forgot-password POST Send OTP for password reset /api/auth/reset-password POST Reset password with OTP

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Slide 8 – API Endpoints (Wallet) 💰 Endpoint Method Description /api/wallet/balance GET Get wallet balance /api/wallet/fund/manual POST Manual wallet funding /api/wallet/fund/paystack POST Initialize Paystack payment /api/wallet/verify/:reference GET Verify Paystack transaction /api/wallet/webhook/paystack POST Auto wallet funding /api/wallet/set-pin POST Set/update 4-digit wallet PIN /api/wallet/verify-pin POST Verify PIN before actions /api/wallet/transfer POST Wallet-to-wallet transfer /api/wallet/transactions GET Paginated transaction history /api/wallet/transactions/:id GET Get single transaction

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Slide 9 – API Endpoints (Profile & Admin) 👤

Profile:

Endpoint Method Description /api/profile GET Get user profile info /api/profile PUT Update profile info

Admin:

Endpoint Method Description /api/admin/users GET Get all users (admin only) /api/admin/[id]/suspend POST Suspend user account /api/admin/[id]/activate POST Restore suspended account

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Slide 10 – Paystack Webhooks 🔔

Endpoint: POST /api/wallet/webhook/paystack

Auto funds wallet on charge.success

Validates HMAC signature for security

Prevents double-processing of transactions

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Slide 11 – Testing 🧪

Use Postman / Insomnia for API requests

Use Paystack test cards for payments

For webhook testing: ngrok or deployed backend must be public

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Slide 12 – Deployment 🚀

1️⃣ Deploy backend to Render / Heroku / Railway / Vercel 2️⃣ Update BACKEND_URL in .env to deployed URL 3️⃣ Connect frontend to deployed backend API

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Slide 13 – License ⚖️

MIT License