Developer Guide

Welcome to the DBackup Developer Guide. This section covers architecture, contribution guidelines, and how to extend the application.

Overview

DBackup is built with:

• Frontend: Next.js 16 (App Router), React, TypeScript
• UI Components: Shadcn UI
• Styling: Tailwind CSS
• Database: SQLite via Prisma ORM
• Authentication: better-auth

Project Structure

src/
├── app/              # Next.js App Router
│   ├── actions/      # Server Actions
│   ├── api/          # API routes
│   └── dashboard/    # Dashboard pages
├── components/       # React components
├── lib/
│   ├── adapters/     # Database, Storage, Notification adapters
│   ├── core/         # Interfaces and types
│   └── runner/       # Backup execution pipeline
└── services/         # Business logic layer

Quick Start

Prerequisites

• Node.js 20+
• pnpm
• Docker (for testing)

Setup

# Clone repository
git clone https://github.com/Skyfay/DBackup.git
cd DBackup

# Install dependencies
pnpm install

# Configure environment
cp .env.example .env
# Edit .env with your settings

# Initialize database
npx prisma db push
npx prisma generate

# Start development server
pnpm dev

Open http://localhost:3000.

Testing

# Start test databases
docker-compose -f docker-compose.test.yml up -d

# Run unit tests
pnpm test

# Run integration tests
pnpm test:integration

# Seed test data for UI testing
pnpm test:ui

Architecture Principles

Four-Layer Architecture

1. App Router (src/app) - Route definitions only
2. Service Layer (src/services) - Business logic
3. Adapter System (src/lib/adapters) - External integrations
4. Runner Pipeline (src/lib/runner) - Backup execution

Key Rules

• Server Actions delegate to Services - No business logic in actions
• Adapters are pluggable - Follow interface contracts
• Streaming architecture - Efficient memory usage
• SSH exec over tunneling - Database tools run remotely via SSH, output streams back
• Permission checks everywhere - RBAC enforcement

Contributing

Code Style

• TypeScript strict mode
• ESLint configuration
• Prettier formatting
• kebab-case file names

PR Guidelines

1. Create feature branch
2. Write tests for new features
3. Update documentation
4. Run pnpm run build before submitting

Commit Messages

Follow conventional commits:

feat: add MongoDB adapter
fix: correct retention calculation
docs: update API documentation

Key Documentation

• Architecture - System design details
• Adapter System - How adapters work
• Runner Pipeline - Backup execution flow
• Icon System - Iconify icon mapping for adapters
• Logging System - System logger, custom errors, execution logs
• Download Tokens - Temporary download links for wget/curl
• Checksum & Integrity - SHA-256 verification throughout the backup lifecycle
• Testing Guide - Writing tests

Package Manager

Always use pnpm:

pnpm install
pnpm add package-name
pnpm test

Environment Variables

See Environment Reference for all variables and Installation Guide for Docker setup.