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MVP Sprint Progress - Phase 1 Complete! ✅

Completed: Phase 1 - Setup (T001-T010)

✅ T001: Created backend directory structure

  • backend/app/ - Application code
  • backend/app/db/ - Database configuration
  • backend/app/models/ - SQLAlchemy models (ready for Phase 3)
  • backend/tests/ - Test suite
  • backend/tests/test_models/ - Model tests
  • backend/alembic/ - Alembic migration framework
  • backend/alembic/versions/ - Migration files (empty, ready for Phase 3)

✅ T002-T004: Python virtual environment and dependencies installed

  • Python 3.13 virtual environment created
  • Note: Upgraded to newer package versions for Python 3.13 compatibility
    • sqlalchemy>=2.0.35 (was 2.0.23)
    • psycopg[binary]>=3.2.3 (replaced psycopg2-binary==2.9.9 due to Python 3.13 build issues)
    • alembic>=1.13.0
    • geoalchemy2>=0.14.2
    • python-dotenv>=1.0.0
    • pytest>=8.0.0
    • pytest-postgresql>=5.0.0
    • pytest-alembic>=0.11.0

✅ T005: Alembic initialized

  • alembic.ini configured with database URL
  • alembic/env.py configured to:
    • Import Base and all models
    • Load DATABASE_URL from environment (.env file)
    • Support autogenerate for migrations

✅ T006-T010: Configuration files created

  • requirements.txt - Python dependencies
  • pyproject.toml - Project metadata and configuration
  • .env - Environment variables (DATABASE_URL)
  • .env.example - Example environment configuration
  • .gitignore - Git ignore patterns
  • README.md - Complete setup and usage documentation

✅ Foundation files created

  • app/init.py - Application package
  • app/db/init.py - Database package
  • app/db/base.py - SQLAlchemy DeclarativeBase
  • app/db/session.py - Database engine and session factory
  • app/models/init.py - Models package (empty, ready for Phase 3)
  • tests/conftest.py - Pytest fixtures for database testing
  • tests/init.py - Test suite package

Next: Phase 2 - Foundation (T011-T024) - CRITICAL BLOCKER ⚠️

Important: Phase 2 tasks MUST complete before any model development can begin!

Required Steps (in order):

  1. T011-T014: Database Setup ⚠️ REQUIRES MANUAL POSTGRESQL SETUP

    # 1. Verify PostgreSQL 17 is running on localhost:5432

# 2. Create the database
createdb celestial_signs

# 3. Enable PostGIS extension
psql celestial_signs -c "CREATE EXTENSION IF NOT EXISTS postgis;"
psql celestial_signs -c "CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";"

# 4. Create user and grant permissions (if not already exists)
psql postgres -c "CREATE USER celestial_app WITH PASSWORD 'celestial2025';"
psql postgres -c "GRANT ALL PRIVILEGES ON DATABASE celestial_signs TO celestial_app;"
psql celestial_signs -c "GRANT ALL ON SCHEMA public TO celestial_app;"

  2. T015-T020: Test Infrastructure (already complete! ✅)

    • ✅ SQLAlchemy Base created (app/db/base.py)
    • ✅ Session factory created (app/db/session.py)
    • ✅ Alembic env.py configured
    • ✅ Pytest conftest.py with fixtures created

  3. T021-T024: Package Structure (already complete! ✅)

    • ✅ All __init__.py files created

Then: Phase 3 - User Story 1 MVP (T025-T048)

Once Phase 2 is complete, we'll create:

Scientific Data Models (8 tables)

  1. EphemerisData - Celestial object positions over time
  2. OrbitalElements - Orbital parameters for celestial objects
  3. ImpactRisks - NEO impact risk assessments
  4. NeoCloseApproaches - Near-Earth Object close approach data

Geophysical Event Models (4 tables)

  1. Earthquakes - Seismic event records (with PostGIS)
  2. SolarEvents - Solar activity (flares, CMEs, storms)
  3. MeteorShowers - Annual meteor shower data
  4. VolcanicActivity - Volcanic eruption records (with PostGIS)

Deliverables

  • 8 SQLAlchemy ORM models
  • 1 Alembic migration (001_initial_scientific_schema.py)
  • 5 test files validating all functionality
  • Sample data insertion and spatial queries

Current Status Summary

Phase Status Tasks Notes
Phase 1: Setup ✅ Complete T001-T010 All backend structure created
Phase 2: Foundation ⏸️ Waiting T011-T024 Needs PostgreSQL database setup
Phase 3: MVP ⏸️ Pending T025-T048 Blocked by Phase 2
Phase 4+: US2-US5 ⏸️ Pending T049-T155 Future sprints

Action Required

Option 1: Continue with Phase 2 (Recommended if PostgreSQL is ready)

If you have PostgreSQL 17 installed and running, I can:

  1. ✅ Verify database connectivity
  2. ✅ Create the database and enable extensions
  3. ✅ Validate the setup
  4. ✅ Move directly to Phase 3 (creating models and migrations)

Option 2: Pause and Setup PostgreSQL First

If PostgreSQL is not yet set up, you should:

  1. Install PostgreSQL 17 with PostGIS 3.4+
  2. Start the PostgreSQL service
  3. Then return and we'll proceed with Phase 2

Files Created This Session

backend/
├── alembic/                    # ✅ Alembic migration framework
│   ├── versions/               # ✅ (empty, ready for migrations)
│   ├── env.py                  # ✅ Configured for autogenerate
│   ├── README                  # ✅ Alembic-generated
│   └── script.py.mako          # ✅ Migration template
├── app/                        # ✅ Application package
│   ├── __init__.py             # ✅
│   ├── db/                     # ✅ Database layer
│   │   ├── __init__.py         # ✅
│   │   ├── base.py             # ✅ DeclarativeBase
│   │   └── session.py          # ✅ Engine + SessionLocal
│   └── models/                 # ✅ (empty, ready for Phase 3)
│       └── __init__.py         # ✅
├── tests/                      # ✅ Test suite
│   ├── __init__.py             # ✅
│   ├── conftest.py             # ✅ Pytest fixtures
│   └── test_models/            # ✅ (empty, ready for Phase 3)
│       └── __init__.py         # ✅
├── venv/                       # ✅ Python virtual environment
├── .env                        # ✅ Environment variables
├── .env.example                # ✅ Example configuration
├── .gitignore                  # ✅ Git ignore patterns
├── alembic.ini                 # ✅ Alembic configuration
├── pyproject.toml              # ✅ Project metadata
├── README.md                   # ✅ Documentation
└── requirements.txt            # ✅ Dependencies

Total: 19 files/directories created, 8 dependencies installed, 1 virtual environment configured

What's Next?

Tell me: Is PostgreSQL 17 installed and running? If yes, I'll verify connectivity and proceed with Phase 2. If no, I'll provide PostgreSQL installation guidance.