shopdb-flask/CLAUDE.md

ShopDB Flask Project

Modern rewrite of the classic-ASP shopdb. Built as a framework so sister GE Aerospace sites can adopt it. Plugin system is the product.

Database

• Active database: shopdb_flask (MySQL, asset-based schema)
• Legacy database: shopdb (Classic ASP schema, used only for one-time data import via scripts/import_from_mysql.py)
• Connection: .env file. See .env.example.

Architecture decisions live in docs/adr/. Read those before making schema or contract changes.

• ADR-001: Asset model is the platform contract (Machine retires) - ACCEPTED
• ADR-002: Plugin contract versioning (semver) - ACCEPTED
• ADR-003: Plugin distribution model (in-tree bundled + filesystem-based external) - ACCEPTED
• ADR-004: Deployment topology (per-site instances, not multi-tenant) - ACCEPTED
• ADR-005: Equipment vs measuringtools plugin scope - ACCEPTED
• ADR-006: Plugin collector contract pattern - ACCEPTED

Coding convention

CONTRIBUTING.md defines naming rules (DB tables, columns, Python, JS, Vue, API). Pre-commit hook at scripts/check-naming-and-style.sh enforces them. Read CONTRIBUTING.md before naming any new identifier.

Current state (as of 2026-07-10)

Refactor phases 0-5 landed; phase 6 (multi-site distribution readiness) in progress.

Phases done

• Phase 0: 6 ADRs accepted, naming convention v1, pre-commit style hook
• Phase 1: 8 smoke tests + 7 production-config tests, Flask-SQLAlchemy 3 fixtures, uv lockfile, hardened ProductionConfig
• Phase 2: contract surface defined (__contract_version__, BasePlugin hooks, docs/PLUGIN-HOOKS.md), 51 contract tests
• Phase 3: manifest-first loader, fail-loud/isolate policy, contract-version range checking, auto-register core blueprints, shopdb.api namespace, BasePlugin.get_setting/set_setting helpers
• Phase 4: flask plugin new <name> CLI, scaffold templates, 14 canary tests, docs/PLUGIN-QUICKSTART.md
• Phase 5: ADRs moved to docs/adr/, Alembic baseline migration, per-site deploy artifacts (Dockerfile, docker-compose.yml, docs/DEPLOY.md)

Active state

• 206 tests passing, naming/style check green
• __contract_version__ at 0.5.0
• 10 bundled plugins all satisfy contract: computers, employees, equipment, knowledgebase, network, notifications, printers, slides, usb, warranty
• Single core Alembic chain: baseline 68b3947ae14f -> head 7d16_directoryemployees (23 migrations). A fresh site runs flask db upgrade from empty; it is reproducible and idempotent.
• Pre-1.0 framework; sister sites should pin tight core_version ranges until contract reaches 1.0

Deferred

• Equipment data migration (one-shot script for legacy ASP shopdb -> assets). Per ADR-001, only category='Equipment' AND machinenumber IS NOT NULL migrates. Skill migrating-asset-schema documents the pattern; the actual one-shot script lives in scripts/migration/ when run.
• Printers retirement: legacy PrinterData model + frontend changes. Coordinated with the equipment data migration.
• measuringtools plugin (ADR-005). First plugin to be built using the scaffold.
• Frontend hook contract for asset-detail, map markers, search results
• Alembic per-plugin migration chains (the framework supports them; bundled plugins haven't moved off db.create_all() yet)

Quick start

# Start dev environment
~/start-dev-env.sh

# Activate venv and install deps
cd /home/camp/projects/shopdb-flask
source venv/bin/activate
pip install -r requirements.txt

# Configure environment
cp .env.example .env
# Edit .env with DB credentials, JWT secrets

# Create / update database tables via the Alembic chain
flask db upgrade

# Seed RBAC, default settings, and reference data (all idempotent)
flask seed permissions
flask seed settings
flask seed reference-data

# Restart services
pm2 restart shopdb-flask-api shopdb-flask-ui

Service URLs

• Flask API: http://localhost:5001
• Flask UI: http://localhost:5173
• Legacy ASP (data source for one-time import): http://192.168.122.151:8080

Plugin structure

plugins/
  <plugin_name>/
    __init__.py
    plugin.py          # BasePlugin implementation
    manifest.json      # Plugin metadata (name, version, dependencies, api_prefix)
    models/
      __init__.py      # Export all models
      <model>.py       # SQLAlchemy models
    api/
      __init__.py
      routes.py        # Flask Blueprint
    services/          # Optional, business logic
    schemas/           # Optional, marshmallow schemas
    migrations/        # Optional, plugin-specific Alembic migrations

Each plugin must have:

• models/__init__.py exports all models
• plugin.py extends BasePlugin
• manifest.json with metadata (single source of truth per ADR-002)
• No direct imports from core code (use the contract surface defined in ADR-001)

Key files

• shopdb/__init__.py - app factory, blueprint registration
• shopdb/plugins/base.py - BasePlugin ABC, PluginMeta dataclass
• shopdb/plugins/loader.py - filesystem discovery, dependency-aware loading
• shopdb/core/api/assets.py - example of optional plugin imports
• frontend/src/router/index.js - frontend routing
• frontend/src/components/AppSidebar.vue - navigation menu
• docs/adr/ - architecture decision records

Migration notes

• migrations/DATA_MIGRATION_GUIDE.md - one-time import from legacy ASP shopdb
• migrations/MIGRATE_USB_DEVICES_FROM_EQUIPMENT.md - USB device migration from equipment table
• migrations/FIX_LOCATIONONLY_EQUIPMENT_TYPES.md - LocationOnly equipment type fix
• migrations/PRODUCTION_MIGRATION_GUIDE.md - production import methods
• migrations/rename_underscore_columns.sql - one-time rename of snake_case columns to lowercase concatenated (per CONTRIBUTING.md)
• migrations/versions/ - the core Alembic chain (baseline 68b3947ae14f -> head 7d16_directoryemployees). Run flask db upgrade to apply.