giglez/PHASE2_PROGRESS.md

# Phase 2: Upload System - Progress Report

**Date**: 2026-01-12
**Status**: Core Implementation Complete (60%)
**Next Session**: Authentication + Background Tasks

---

## ✅ Completed (Session 1)

### 1. Environment-Aware Configuration ✅
**Files**: `.env.development`, `.env.production`, `config/settings.py`

- Complete environment detection and validation
- Mode-specific settings (development vs production)
- Validation on startup with error reporting
- Computed properties (is_production, use_redis, etc.)

### 2. FastAPI Application Structure ✅
**File**: `src/api/main.py` (280+ lines)

**Features**:
- Lifespan management (startup/shutdown)
- Configuration validation on startup
- Database connection testing
- Storage backend initialization
- CORS middleware (environment-aware)
- GZip compression
- Request timing middleware
- Request logging
- Global exception handler (debug vs production mode)
- Root endpoints (/, /health, /version)
- Conditional route loading (hardware, debug)

### 3. Storage Abstraction Layer ✅
**Files**: `src/core/storage/*.py` (400+ lines)

**Implementations**:
- `StorageBackend` - Abstract base class
- `LocalStorage` - Filesystem storage (development)
  - Content-addressed storage (SHA256 sharding)
  - Automatic directory creation
  - Storage statistics
- `S3Storage` - S3-compatible storage (production)
  - AWS S3, MinIO support
  - Presigned URLs
  - Bucket validation
  - Storage statistics
- `factory.py` - Automatic backend selection

**Key Features**:
- Unified interface for both backends
- SHA256-based content addressing
- File sharding (ab/c1/abc123...sub)
- Exists/delete operations
- URL generation
- Statistics reporting

### 4. API Dependencies ✅
**File**: `src/api/dependencies.py`

**Dependencies**:
- `get_db()` - Database session management
- `get_current_user()` - JWT authentication (environment-aware)
- `require_auth()` - Force authentication
- `optional_auth()` - Optional authentication
- `get_pagination()` - Pagination parameters
- `get_storage()` - Storage backend

### 5. Upload Endpoint ✅
**File**: `src/api/routes/captures.py` (200+ lines)

**Features**:
- JSON manifest + multiple .sub files
- SHA256 hash computation (deduplication)
- GPS coordinate validation
- .sub file parsing
- Storage backend integration
- Database persistence
- Session management
- Duplicate detection
- Error handling per file
- Upload summary response

**Manifest Format**:
```json
{
    "session_uuid": "...",
    "captures": [
        {
            "filename": "capture_001.sub",
            "latitude": 40.7128,
            "longitude": -74.0060,
            "accuracy": 5.0,
            "altitude": 10.5,
            "timestamp": "2026-01-12T10:00:00Z"
        }
    ]
}
```

### 6. Route Stubs Created ✅
**Files**: `src/api/routes/*.py`

- `devices.py` - Device catalog
- `query.py` - Geospatial queries
- `stats.py` - Platform statistics
- `hardware.py` - T-Embed control (dev mode)
- `debug.py` - Debug endpoints (dev mode)

---

## 🚧 Remaining Tasks

### 1. Authentication System (High Priority)
**File**: `src/api/auth.py` (needs creation)

**Requirements**:
- JWT token generation/validation
- API key management
- Password hashing (bcrypt)
- Login endpoint
- Token refresh
- User registration (optional)

**Dependencies**:
```python
pip install python-jose[cryptography] passlib[bcrypt]
```

### 2. Background Task System (High Priority)
**File**: `src/api/tasks.py` (needs creation)

**Requirements**:
- Synchronous mode (development)
- Celery mode (production)
- Task: Device signature matching
- Task: Materialized view refresh
- Task: Upload marker updates

**Conditional Implementation**:
```python
if settings.use_celery:
    from celery import Celery
    celery_app = Celery('giglez', broker=settings.celery_broker)
else:
    # Synchronous fallback
    def process_task_sync(func, *args):
        return func(*args)
```

### 3. Upload Marker System (Medium Priority)
**Integration**: Wigle incremental sync pattern

**Requirements**:
- Track last uploaded capture per user/session
- Query unuploaded captures
- Update marker on successful upload
- Enable resume after failure

### 4. Query Endpoints (Medium Priority)
**File**: `src/api/routes/query.py` (expand stub)

**Requirements**:
- Geospatial queries (radius, bounding box)
- Filter by protocol/frequency/device
- Time range filtering
- Pagination support
- PostGIS spatial queries

### 5. Rate Limiting Middleware (Medium Priority)
**File**: `src/api/middleware.py` (needs creation)

**Requirements**:
- Per-user rate limiting (production)
- Per-IP rate limiting (fallback)
- Disabled in development mode
- Redis-backed (production) or in-memory (dev)

**Dependencies**:
```python
pip install slowapi
```

### 6. Complete Route Implementations (Low Priority)
**Expand stubs in**:
- `devices.py` - Device catalog queries
- `stats.py` - Platform statistics
- `hardware.py` - T-Embed control

### 7. API Tests (Low Priority)
**Directory**: `tests/api/` (needs creation)

**Test Coverage**:
- Upload endpoint (success, duplicate, invalid GPS)
- Authentication (login, token validation)
- Storage backends (filesystem, S3 mock)
- GPS validation
- Query endpoints

---

## 📊 Progress Statistics

### Code Written
- **Lines**: ~1,400 lines of Python
- **Files Created**: 15+
- **Modules**: FastAPI app, storage layer, routes, dependencies

### Features Complete
- ✅ Environment configuration (100%)
- ✅ FastAPI application (90%)
- ✅ Storage abstraction (100%)
- ✅ Upload endpoint (95%)
- ✅ Dependencies (80%)
- ⏳ Authentication (0%)
- ⏳ Background tasks (0%)
- ⏳ Query endpoints (20% - stubs only)
- ⏳ Rate limiting (0%)
- ⏳ Tests (0%)

### Overall Progress: **60%**

---

## 🎯 Architecture Highlights

### Hybrid Design Achieved ✅
```
Development Mode (Termux)      Production Mode (Server)
├── LocalStorage              ├── S3Storage
├── Optional auth             ├── Required auth
├── Synchronous tasks         ├── Celery async
├── No rate limiting          ├── Rate limiting
└── Debug endpoints           └── Production endpoints
        │                              │
        └──────────┬───────────────────┘
                   │
           ┌───────▼────────┐
           │  Shared Core   │
           ├────────────────┤
           │ - Upload API   │
           │ - Storage      │
           │ - Database     │
           │ - Parser       │
           └────────────────┘
```

### Key Patterns Implemented
1. **Storage Abstraction** - Filesystem or S3 (transparent)
2. **Environment Awareness** - Settings-based feature flags
3. **Optional Authentication** - Required in prod, optional in dev
4. **Middleware Stack** - CORS, GZip, timing, logging
5. **Error Handling** - Debug vs production error messages
6. **Lifespan Management** - Startup validation, graceful shutdown

---

## 🚀 How to Test (Current Implementation)

### 1. Install Dependencies
```bash
cd /home/dell/coding/giglez
pip install -r requirements.txt
pip install python-multipart  # For file uploads
```

### 2. Setup Database (if not done)
```bash
./scripts/setup_database.sh
psql -U giglez_user -d giglez -h localhost -f scripts/create_schema.sql
```

### 3. Configure Environment
```bash
# Use development environment
cp .env.development .env

# Test configuration
python config/settings.py
```

### 4. Start API Server
```bash
# Development mode with auto-reload
python src/api/main.py

# Or with uvicorn directly
uvicorn src.api.main:app --host 127.0.0.1 --port 8000 --reload
```

### 5. Test Endpoints
```bash
# Health check
curl http://localhost:8000/health

# API info
curl http://localhost:8000/

# OpenAPI docs
open http://localhost:8000/docs
```

### 6. Test Upload (Manual)
```bash
# Create test manifest
cat > manifest.json << 'EOF'
{
    "session_uuid": "test-session-001",
    "captures": [
        {
            "filename": "test.sub",
            "latitude": 40.7128,
            "longitude": -74.0060,
            "accuracy": 5.0,
            "timestamp": "2026-01-12T10:00:00Z"
        }
    ]
}
EOF

# Create test .sub file (minimal)
cat > test.sub << 'EOF'
Filetype: Flipper SubGhz Key File
Version: 1
Frequency: 433920000
Preset: FuriHalSubGhzPresetOok270Async
Protocol: Princeton
Bit: 24
Key: 00 00 00 00 00 95 D5 D4
EOF

# Upload
curl -X POST http://localhost:8000/api/v1/captures/upload \
  -F "manifest=@manifest.json" \
  -F "files=@test.sub"
```

---

## 📝 Next Session Plan

### Priority 1: Authentication
1. Create `src/api/auth.py`
2. Implement JWT token generation
3. Implement token validation
4. Add login endpoint
5. Update dependencies.py with real JWT decoding
6. Test authentication flow

### Priority 2: Background Tasks
1. Create `src/api/tasks.py`
2. Implement sync/Celery abstraction
3. Add signature matching task
4. Integrate with upload endpoint
5. Test both modes

### Priority 3: Query Endpoints
1. Expand `src/api/routes/query.py`
2. Implement geospatial queries (PostGIS)
3. Add filtering and pagination
4. Test performance

---

## 💡 Design Decisions Made

### 1. Manifest in Form Data (vs Separate File)
**Choice**: JSON string in form data
**Reason**: Single POST request, no need for separate manifest file upload

### 2. SHA256 Primary Key
**Choice**: file_hash as primary key in Capture table
**Reason**: Automatic deduplication at database level (Wigle pattern)

### 3. Storage Path Sharding
**Choice**: ab/c1/abc123...sub (first 2+2 chars)
**Reason**: Prevents too many files in single directory (filesystem limits)

### 4. Temporary File for Parsing
**Choice**: Write to temp file before parsing
**Reason**: Existing parser expects file path, not bytes

### 5. Batch Commit
**Choice**: Commit all captures after loop
**Reason**: Atomicity - all or nothing (can be optimized later with batch size)

---

## 🔧 Technical Debt

### Items to Address Later
1. **Batch Size**: Currently commits all at once, should use 512-batch pattern
2. **Parser Interface**: Should accept bytes directly, not file path
3. **Error Recovery**: Partial uploads not resumable (need upload markers)
4. **File Validation**: Should validate .sub format before parsing
5. **Response Size**: Large uploads return large responses (consider streaming)
6. **Async Storage**: Storage operations are sync (could be async)

---

## 📚 Documentation Status

### Created
- ✅ `DEPLOYMENT_CONSIDERATIONS.md` - Comprehensive guide
- ✅ `DEPLOYMENT_SUMMARY.md` - Quick reference
- ✅ `.env.development` - Development config
- ✅ `.env.production` - Production config
- ✅ `PHASE2_PROGRESS.md` - This document

### Needed
- ⏳ API usage guide
- ⏳ Authentication guide
- ⏳ Deployment guide (production)
- ⏳ Testing guide
- ⏳ Troubleshooting guide

---

## ✅ Ready for Next Session

**Current State**: Core upload system functional
**Blocking Issues**: None
**Dependencies**: python-jose, passlib (for auth)
**Next Priority**: Authentication system

**Command to Continue**:
```
Let's implement authentication - JWT tokens and API keys
```

---

**Session End**: 2026-01-12
**Phase 2 Status**: 60% Complete
**Next Session**: Authentication + Background Tasks