Crussell

Nail salon booking platform — Go 1.25 backend + SvelteKit 5 frontend + Docker. Built for a UK sole-trader nail artist.

Features

• Three booking flows: self-service (customer), walk-in (admin), call-in (admin)
• Slot reservations: temporary holds prevent double-booking (4 TTL types)
• Guest accounts: disposable accounts for one-off bookings, GDPR-compliant anonymization
• Service eligibility: age requirements + patch test validation
• Deposit system: 3-strike rule for late cancellations, 24-hour threshold
• Square payments: in-person Terminal + online Web Payments SDK (dev mock + prod stub, build-tagged)
• Payment methods: Card (Square Terminal/online), cash, gift card — with saved cards, refunds, and webhook handling
• Payment types: deposit, full, partial, balance, tip — admin can override service prices during payment
• Scheduling: default hours, holiday overrides, time blockers
• Loyalty & discounts: stamp-based loyalty, time-based and milestone campaigns
• Portfolio gallery: S3/R2 storage with tag/category filtering
• CardDAV sync: profile photos synced to SabreDAV contacts
• Admin notifications: priority-sorted queue with bell icon, /notifications page, acknowledge flow
• User notification preferences: per-channel toggles (email, SMS, browser) in account settings
• Enriched edit requests: side-by-side original vs proposed booking snapshots (time, services, prices, durations, user details) for admin review

Project Structure

Crussell/
├─ backend/            # Go 1.25 + chi router API
│  ├─ handlers/        # API handlers (auth, bookings, payments, scheduling, etc.)
│  │  ├─ payments/     # Square payment handlers (terminal, online, refunds, tips)
│  │  └─ webhooks/     # Square webhook handler
│  ├─ internal/        # Internal packages
│  │  └─ square/       # Square client (dev mock + prod stub, build-tagged)
│  └─ testutils/       # Test helpers (fixtures, testdb, JWT)
├─ frontend/           # SvelteKit 5 SPA (static build)
│  └─ src/lib/components/
│     ├─ payments/     # PaymentModal (admin), UserPaymentModal (user)
│     └─ booking/      # BookingFlow (5-step wizard)
├─ sabredav/           # PHP + Composer for DAV
├─ nginx/              # Nginx reverse-proxy for HTTP & HTTPS
├─ init-scripts/       # PostgreSQL init SQL
├─ compose.yml         # Docker-Compose definition
├─ local-dev-2.sh      # Dev helper using tmux (seeds DB with test data)
└─ README.md

Prerequisites

Tool	Version
Docker & Docker Compose	>= 20.10
Go	>= 1.22
Node	>= 18 (npm)
tmux	>= 3.0

Getting Started

Docker Compose

cp .env.example .env
# Edit .env — set POSTGRES_*, JWT_SECRET_KEY
docker compose up --build -d

Service	URL
Frontend	http://localhost
API	http://localhost/api
SabreDAV	http://localhost/dav

Local Development

chmod +x local-dev-2.sh
./local-dev-2.sh

Launches a tmux session (crussell-dev) with 4 panes: psql console, Go dev server, Svelte dev server, and Rustfs logs. Seeds the database with 20 users, 12 services, 43 bookings, guest accounts, time blockers, and exceptional hours.

Default login (all password: password):

• Admin: admin@example.com
• User: user@example.com

Building & Testing

# Backend
cd backend && go build -o bin/backend ./main.go

# Frontend
cd frontend && npm ci && npm run build

# Tests (438/441 passing, 3 skipped)
cd backend && go test -tags "test,dev" ./...

Full Documentation

For detailed user journeys, admin workflows, architecture, API reference, and database schema, see obsidian/Crussell/.