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Only zero is empty, and the last day is worth reading
Two separate floors were collapsing a live cartridge into a spent one, and
removing either alone changes nothing.

EMPTY_LEVEL was 5, so everything at or below 5% was assigned daysleft 0
outright. The reasoning was that a printer at 1% is out of toner as far as
anyone standing at it is concerned. But the row exists to say how long is
left, and 2% draining a point a day has two days in it. Flooring put that
cartridge beside ones that genuinely are empty with no way back to the
difference. It is 0 now: empty means empty.

int(level / rate) then truncated the division, so anything under a full day
arrived as 0 whatever the floor did - a cartridge with six hours in it was
indistinguishable from one with nothing, and the band read it as empty.
daysleft is fractional now, rounded to two places, which is about a quarter of
an hour: finer than the estimate deserves, but it costs nothing and keeps the
ordering of two nearly-spent cartridges meaningful.

daysText reads in whatever unit carries meaning: "6 hours", "1 hour", "29 min",
"4 days". Below an hour it goes to minutes with a floor of one, because
rounding hours would land back on "empty" - the same bug one rung down.

BEHAVIOUR CHANGE worth knowing: a cartridge at 1-5% with NO history used to get
daysleft 0 from the floor and land on the order list. A rate needs two
readings; with none there is nothing to divide, and the old answer was right by
accident - it said "empty" about a level nobody had watched move. It now
reports 'no history' and shows under "No estimate yet". This reaches only
printers newly added to Zabbix; anything that got to 3% the ordinary way has
the history to forecast from.

Five existing tests pinned the old rule. They recorded a real decision, so they
are rewritten to the new one rather than deleted. One of them was passing for
the wrong reason: its series (2.0, 1.7, 1.4, 1.1) drops 0.9, under
MIN_DROP_FOR_ESTIMATE, so it never had a rate at all and only passed because
the floor short-circuited ahead of the rate check. It now uses a real 20-day
drop at a tenth of a point a day and asserts the ten days its docstring always
described.

The forecast fixture's black cartridge moves from 1% to 0% so the empty band
keeps its API-level coverage, and a magenta at 3% covers hours-left end to end.
2026-08-21 11:57:02 -04:00
2026-02-17 12:47:08 -05:00

ShopDB Flask

A modern rewrite of the classic ASP/VBScript ShopDB application using Flask (Python) and Vue 3. This application manages shop floor machines, PCs, printers, applications, and related infrastructure for manufacturing environments.

Overview

ShopDB tracks and manages:

  • Machines - CNC equipment, CMMs, inspection systems, etc.
  • PCs - Shopfloor computers, engineering workstations
  • Printers - Network printers with Zabbix supply integration
  • Network devices - Switches, routers, and the subnet browser
  • Measuring tools - Gage-lab instruments with calibration tracking
  • Applications - Software deployed across the shop floor, with per-PC install tracking
  • Employees - Directory, recognition and training notifications
  • Warranties - Coverage records with Dell warranty lookups
  • USB devices - CMMC check-in/out tracking
  • Knowledge Base - Documentation and troubleshooting guides
  • GE-Enforce manifests - Imaging/software manifest editing and fleet compliance

Tech Stack

Backend:

  • Python 3.14 with Flask
  • SQLAlchemy ORM
  • MySQL 5.7+ database (5.6 works with extra utf8mb4 config; see docs/DEPLOY.md)
  • JWT authentication
  • Plugin architecture for extensibility

Frontend:

  • Vue 3 with Composition API
  • Vue Router for navigation
  • Pinia for state management
  • Vite build system

Project Structure

shopdb-flask/
+-- shopdb/                 # Flask application
|   +-- core/
|   |   +-- api/            # REST API endpoints
|   |   +-- models/         # SQLAlchemy models
|   |   +-- schemas/        # Validation schemas
|   |   `-- services/       # Business logic
|   +-- plugins/            # Plugin system
|   `-- utils/              # Shared utilities
+-- frontend/               # Vue 3 application
|   +-- src/
|   |   +-- api/            # API client
|   |   +-- components/     # Reusable components
|   |   +-- views/          # Page components
|   |   +-- router/         # Route definitions
|   |   `-- stores/         # Pinia stores
|   `-- public/             # Static assets
+-- plugins/                # Bundled and external plugins
+-- migrations/             # Alembic migration chain (flask db upgrade)
+-- scripts/                # Import and utility scripts
`-- tests/                  # Test suite

Naming Conventions

To maintain consistency with the legacy ShopDB database and codebase, the following naming standards apply:

Database

  • Table names: Lowercase, single word, no underscores or dashes
    • Examples: assets, computers, printers, businessunits
  • Column names: Lowercase, single word, no underscores or dashes
    • Examples: assetid, assetnumber, hostname, isactive, createddate
  • Foreign keys: Referenced table name + id
    • Examples: locationid, vendorid, modelnumberid, computertypeid
  • Boolean columns: Prefixed with is or has
    • Examples: isactive, isshopfloor, iscolor, isdhcp, islicenced

Code

  • Python variables: Follow database naming where applicable (lowercase, no underscores for model fields)
  • JavaScript variables: camelCase for local variables, but match API field names from backend
  • Vue components: PascalCase for component names
  • CSS classes: Lowercase with dashes for multi-word classes

API

  • Endpoints: Lowercase, plural nouns
    • Examples: /api/machines, /api/computers, /api/locations
  • Query parameters: Lowercase, single word
    • Examples: ?locationid=5, ?isactive=true, ?assettype=computer

Style Guidelines

  • No emojis in code, comments, documentation, or UI
  • Keep UI functional and professional
  • Dark theme is the default
  • Consistent table layouts across all list views

Setup

Prerequisites

  • Python 3.14
  • Node.js 18+
  • MySQL 5.7+ (5.6 works with extra utf8mb4 config; see docs/DEPLOY.md)

ShopDB Flask uses MySQL as the canonical database. SQLite is used only for the test suite (TestingConfig in shopdb/config.py points at an in-memory SQLite). Do not run dev or production against SQLite.

Distribution

Source lives here. The Windows installer ships as a release asset rather than a file in the repository - it is around 240 MB, well past what a repository takes and well inside what a release asset does. There is no package or image registry; a site installs from that .exe or builds from source.

Fast path (Docker)

The Docker image builds the Vue frontend and serves it from the API container, so a container deploy needs no separate Node build step.

cp .env.example .env
# Edit .env: set SECRET_KEY, JWT_SECRET_KEY, DATABASE_URL, CORS_ORIGINS,
# and the MYSQL_* passwords (see docs/CONFIG.md for every variable).

docker compose up -d --build

# Create the schema and seed the platform data (idempotent, safe to re-run):
docker compose exec api flask db upgrade
docker compose exec api flask seed permissions
docker compose exec api flask seed settings
docker compose exec api flask seed reference-data

Then browse to the site and complete the first-run setup wizard at /setup (it creates the first admin account and captures site identity). To create the admin headlessly instead of using the wizard:

docker compose exec api flask seed admin --username admin --email admin@facility.example.com

Manual path (venv + Node)

# Backend
python -m venv venv
source venv/bin/activate
pip install -r requirements.txt
cp .env.example .env
# Edit .env with your database credentials and secrets.

export FLASK_APP=shopdb
flask db upgrade
flask plugin upgrade-all      # per-plugin schema (ADR-008)
flask seed permissions
flask seed settings
flask seed reference-data
flask run --port 5001         # MUST be 5001 - the frontend dev server proxies here

# Frontend (separate terminal)
cd frontend
npm install
npm run dev          # dev server on :5173
npm run build        # production build into frontend/dist (served by Flask)

Complete first-run setup at /setup, or run flask seed admin for a headless admin account. The repo ships VS Code config in .vscode/ (F5 debugs the backend; a "Dev site" task runs both servers). A fuller day-one walkthrough, including VS Code and troubleshooting, is the DEVELOPMENT-SETUP page in the project wiki.

To import a site's legacy data, use the HTTP import surface: an admin API token plus docs/IMPORT-API.md drive the whole migration through documented endpoints (X-Import-Mode preserves original timestamps). scripts/site_imports/wjf/ is the reference site's loader, kept as a worked example of the whole sequence.

Which deployment route

Target Use
Windows Server + IIS (how sister sites run) docs/INSTALL-WINDOWS.md - one installer .exe, offline, no manual IIS work. Day 2: docs/OPERATE-WINDOWS.md
Linux / Docker, air-gapped docs/DEPLOY-AIRGAP.md
Linux / Docker, connected docs/DEPLOY.md

For every environment variable and Setting key see docs/CONFIG.md.

What the Windows installer requires

The installer checks all of this before it changes anything and refuses rather than half-installing.

Minimum Notes
Windows Server 2019 (build 10.0.17763) Ships IIS 10.0, which is therefore the earliest IIS supported. Server 2016 is also IIS 10.0 but falls below the build floor and is refused.
Windows client (test boxes) 10 22H2 (build 10.0.19045) or 11 Pro or higher - Home has no IIS at all.
Architecture 64-bit The payload is cp314 win_amd64.
IIS Web Server role installed beforehand Install-WindowsFeature -Name Web-Server -IncludeManagementTools. Needs no internet.
Free disk 5 GB Refused below this. 40 GB is comfortable once uploads and config backups accumulate.
Database bundled MySQL 8.4 LTS, or your own Bring credentials if you use an existing server.

The binding constraint is the operating system rather than IIS: the payload is Python 3.14 plus HttpPlatformHandler and URL Rewrite, and the handler itself runs on older IIS. An older host is untested rather than known-broken.

If you must deploy onto something older, docs/INSTALL-WINDOWS-IIS.md is the manual procedure and has no OS gate - it even documents MySQL 5.6, which is that era of machine. The trade is stated there: it produces a server the installer will not subsequently upgrade.

Configuration

Environment variables (.env):

Variable Description
DATABASE_URL MySQL connection string
SECRET_KEY Flask secret key
JWT_SECRET_KEY JWT signing key
JWT_ACCESS_TOKEN_EXPIRES Access token TTL (seconds)
LOG_LEVEL Logging verbosity

API Documentation

The REST API follows standard conventions:

Method Endpoint Description
GET /api/machines List machines (filterable by type)
GET /api/machines/:id Get machine details
POST /api/machines Create machine
PUT /api/machines/:id Update machine
DELETE /api/machines/:id Soft delete machine

Each asset plugin exposes the same CRUD pattern on its own prefix (/api/computers, /api/printers, /api/network, /api/measuringtools), and cross-cutting asset endpoints live under /api/assets.

Query parameters for list endpoints:

  • page - Page number (default: 1)
  • perpage - Items per page
  • sort - Sort field
  • dir - Sort direction (asc/desc)
  • search - Search term
  • assettype - Filter by asset type (computer, printer, machine, networkdevice, measuringtool)

Where to start

docs/START-HERE.md routes by what you are here to do - standing up a site, deploying the shop-floor tools, writing a plugin, integrating with the API, or diagnosing something. On the published mirror the same page is the wiki's front door.

Plugin System

ShopDB supports plugins for extending functionality. See CONTRIBUTING.md for plugin development guidelines.

The image bundles these plugins; only the ones a site installs are loaded. The current count and each plugin's version and migration head are in docs/PROJECT-MAP.md, which is generated:

  • backups - Machine configuration backups (NTLARS/DNC, CMM, part marker, UDC) with revision history and diffs
  • computers - Shopfloor PCs and workstations, collector fleet ingest
  • employees - Employee directory
  • geenforce - GE-Enforce imaging/software manifests and fleet compliance
  • machines - CNC, CMM, and other shop-floor machines
  • measuringtools - Gage-lab instruments with calibration tracking
  • knowledgebase - Documentation and troubleshooting guides
  • network - Network devices and subnets
  • notifications - Shopfloor notifications and recognition feed
  • printedparts - 3D-printed part catalogue, kiosk issue tracking and stock alerts
  • printers - Extended printer management with Zabbix integration
  • slides - TV/kiosk slideshows
  • tools - Tech Tools: barcode and QR generation laid out for real label stock
  • usb - CMMC USB check-in/out tracking
  • warranty - Warranty records with Dell lookups

Legacy Migration

This project replicates functionality from the classic ASP/VBScript ShopDB site. Key mappings:

Legacy Modern
ASP/VBScript Flask/Python
Classic ADO SQLAlchemy
Server-side HTML Vue 3 SPA
Session auth JWT tokens

License

Internal use only.

Description
Shop Database Flask Application with Vue 3 Frontend
Readme 43 MiB
Languages
Python 49.7%
JavaScript 21.6%
Vue 20%
PowerShell 6%
Inno Setup 1%
Other 1.6%