# Migration Plan: Supabase to Golang VPS

## 1. Project Overview
- **Source**: Supabase (Edge Functions, PostgreSQL with RLS, Auth, Storage)
- **Target**: Golang (Gin/Echo), Self-hosted PostgreSQL, Nginx, Systemd
- **App**: Sojorn (Social Media platform with Beacons/Location features)

## 2. Infrastructure Setup (VPS)
- OS: Ubuntu 22.04 LTS
- DB: PostgreSQL 15+ with PostGIS, pg_trgm, uuid-ossp
- Proxy: Nginx (SSL via Certbot)
- Process Manager: Systemd

## 3. Database Migration
- [ ] Export schema from Supabase.
- [ ] Convert RLS policies to application logic (Go middleware/services).
- [ ] Migrate Auth users to a local `users` table (integrating with `profiles`).
- [ ] Set up Go migration tool (`golang-migrate`).
- [ ] Data migration strategy: Dump and restore, or script-based sync.

## 4. Auth System
- [ ] Implement JWT validation (compatible with Supabase or new secret).
- [ ] Login/Signup handlers porting.
- [ ] Middleware for `auth.uid()` equivalent.

## 5. API Mapping (Functions to Handlers)
| Supabase Function | Go Endpoint | Status |
|-------------------|-------------|--------|
| `signup` | `POST /api/v1/auth/signup` | Pending |
| `profile` | `GET /api/v1/profiles/:id` | Pending |
| `feed-sojorn` | `GET /api/v1/feed` | Pending |
| `publish-post` | `POST /api/v1/posts` | Pending |
| `create-beacon` | `POST /api/v1/beacons` | Pending |
| `search` | `GET /api/v1/search` | Pending |
| ... and more ... | | |

## 6. Implementation Phases
### Phase 1: Preparation
- [x] Initial Audit
- [ ] VPS Configuration
- [ ] Repository Setup (Go scaffolding)

### Phase 2: Core Engine
- [ ] Database connection & migrations
- [ ] Auth & Middleware
- [ ] Shared models & utils

### Phase 3: Feature Porting
- [ ] User & Profile management
- [ ] Posting & Feed logic
- [ ] Beacon (GIS) system
- [ ] Notifications (FCM integration)
- [ ] E2EE Chat (Session Manager)

### Phase 4: Finalization
- [ ] Unit & Integration Tests
- [ ] Deployment Scripts
- [ ] Cutover Plan

## 7. To-Be-Decided (TBD)
- [ ] Request volume and growth expectations.
- [ ] VPS specifications.
- [ ] Monitoring preferences (Prometheus/Grafana).
- [ ] Storage strategy (Local vs S3/R2).