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SUPABASE_IMPLEMENTATION.md

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Supabase Implementation Summary

Overview

This document summarizes the end-to-end Supabase data provider implementation for the Salesforce Foundations e-commerce application.

Files Created/Modified

New Files Created

  1. src/lib/supabaseClient.ts

    • Supabase client singleton with environment variable validation
    • Lazy initialization to allow app to load even without Supabase credentials

  2. supabase/schema.sql

    • Complete database schema for all entities
    • Tables: products, product_variants, product_images, reviews, review_images, orders, order_items, shipping_groups, stores, account_profiles, addresses, payment_methods, wishlists, wishlist_items
    • Includes indexes, foreign keys, and Row Level Security (RLS) policies

  3. supabase/seed.sql

    • Sample data matching mock data structure
    • 5 products, 5 reviews, 2 orders, 2 stores, 1 customer profile with addresses/payment methods/wishlist

  4. src/data/repositories/supabase/productRepository.ts

    • Full product repository implementation
    • Handles products, variants, images, filtering, sorting, pagination

  5. src/data/repositories/supabase/reviewRepository.ts

    • Review repository with pagination and filtering

  6. src/data/repositories/supabase/orderRepository.ts

    • Order repository with multi-shipment support

  7. src/data/repositories/supabase/storeRepository.ts

    • Store repository with location-based queries

  8. src/data/repositories/supabase/accountRepository.ts

    • Account repository for customer data, addresses, payment methods, wishlists

  9. src/data/repositories/supabase/index.ts

    • Exports all Supabase repositories

  10. .env.example

    • Template for environment variables

Modified Files

  1. src/data/providers/supabase.ts

    • Replaced skeleton implementations with real repository instances
    • Config repository uses mock data (can be migrated to Supabase later)

  2. src/data/index.ts

    • Added runtime validation for Supabase env vars when DATA_PROVIDER=supabase
    • Clear error messages if credentials are missing

  3. package.json

    • Added @supabase/supabase-js dependency

  4. README.md

    • Added "Run with Supabase" section with setup instructions

Implementation Details

Database Schema

  • Products: Full product catalog with variants, images, pricing, inventory
  • Reviews: Product reviews with images and ratings
  • Orders: Complete order management with multi-shipment support (BOPIS)
  • Stores: Store locations with hours and availability
  • Account: Customer profiles, addresses, payment methods, wishlists

Repository Features

All repositories implement:

  • ✅ Pagination support
  • ✅ Filtering capabilities
  • ✅ Sorting options
  • ✅ Empty state handling (returns empty arrays/undefined, doesn't crash)
  • ✅ Error handling with graceful fallbacks

Provider Switch

  • Default: DATA_PROVIDER=mock (or unset) uses mock data
  • Supabase: DATA_PROVIDER=supabase uses real database
  • Validation: Clear error if Supabase selected but credentials missing

Manual Steps Required in Supabase UI

  1. Create Supabase Project

    • Go to supabase.com
    • Create a new project
    • Wait for project to be ready

  2. Run Schema

    • Go to SQL Editor in your Supabase project
    • Copy contents of supabase/schema.sql
    • Paste and click "Run"
    • Verify all tables are created

  3. Seed Data (Optional)

    • In SQL Editor, copy contents of supabase/seed.sql
    • Paste and click "Run"
    • Verify sample data is inserted

  4. Get Credentials

    • Go to Settings → API
    • Copy "Project URL" → use as NEXT_PUBLIC_SUPABASE_URL
    • Copy "anon public" key → use as NEXT_PUBLIC_SUPABASE_ANON_KEY

  5. Configure Environment

    • Copy .env.example to .env.local
    • Set DATA_PROVIDER=supabase
    • Set NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY

Testing

With Mock Provider (Default)

# No env vars needed
npm run dev
# App works with mock data

With Supabase Provider

# Set in .env.local:
DATA_PROVIDER=supabase
NEXT_PUBLIC_SUPABASE_URL=https://your-project.supabase.co
NEXT_PUBLIC_SUPABASE_ANON_KEY=your-key

npm run dev
# App uses Supabase database

Empty Database Handling

The app gracefully handles empty databases:

  • Products page shows empty state
  • Product detail shows "not found"
  • Orders show empty list
  • No crashes or errors

Build Status

✅ TypeScript: npx tsc --noEmit passes (0 errors) ✅ Build: npm run build passes ✅ All repositories: Implemented and typed correctly

Next Steps (Optional)

  1. Migrate Config to Supabase: Move admin settings and feature flags to database
  2. Add Gift Cards/Store Credit Tables: Extend schema for these features
  3. Implement Auth Integration: Connect Supabase Auth with customer profiles
  4. Add Real-time Subscriptions: Use Supabase real-time for live inventory updates
  5. Optimize Queries: Add more indexes based on usage patterns

Notes

  • All data access remains through repository interfaces
  • UI/UX is identical between mock and Supabase providers
  • Empty states are handled gracefully
  • Error handling prevents crashes
  • Type safety maintained throughout