Files
LEDMatrix/web_interface
ChuckandClaude Opus 5.5 c3a7a110c4 fix(display): on-demand loads a disabled plugin live instead of failing (#678)
* fix(web): on-demand no longer restarts a running display service

POST /display/on-demand/start treated start_service (default true, sent by
"Preview on display", the on-demand dialog and the MQTT bridge) as
"restart": with the service running it ran systemctl stop, slept 1.5s and
started it again. Every request cold-started the display process -- every
plugin reloaded, panel blank -- to deliver a request the running process
already reads from the cache mailbox every ON_DEMAND_POLL_INTERVAL (0.25s),
including mid-dwell, mid-screen and mid-Vegas. The restart bought nothing:
startup only restores a session the display saved itself
(display_on_demand_config), so the new request arrived through the same
mailbox either way.

start_service now means "start it if it is not running". The stop route
coerces stop_service to a boolean so "false" no longer stops the service.
test_api_v3_on_demand_restart.py pinned the old restart path; it now pins
the replacement. Docs updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(display): on-demand loads a disabled plugin live instead of failing

The display process only loads enabled plugins, so an on-demand request for
a disabled one -- "Preview on display" offers it on every config page, with a
note that the plugin will be enabled for the preview -- failed with
invalid-mode. Nothing enabled it short of a restart, and the on-demand route
no longer restarts the service.

_activate_on_demand now loads an installed-but-not-running plugin through
the live-enable path (load_plugin + _register_loaded_plugin), with a new
load_plugin(force_enabled=True) so the instance runs enabled while
config.json keeps saying disabled. The plugin is tracked in
_on_demand_loaded_plugins, and the main loop unloads it through
_unregister_plugin once on-demand moves off it (stop, expiry, another
request, or a failed request that ends the session) -- right after its own
poll, where no display() is on the stack. A failed load publishes status
error with load-failed. A plugin enabled during the session stays loaded.

A session restored after a restart uses the same tracking instead of
setting enabled in the config dict config_manager caches, so its plugin is
unloaded when the session ends rather than staying loaded until the next
restart. Ending a session no longer resumes the rotation onto a plugin that
is about to be unloaded, which a restored session did.

Also: a stop sent while on-demand is inactive clears a failed request's
error, instead of /display/on-demand/status reporting status: error until
the state aged out.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 17:59:12 -04:00
..

LED Matrix Web Interface V3

Modern, production web interface for controlling the LED Matrix display.

Overview

This directory contains the active V3 web interface with the following features:

  • Real-time display preview via Server-Sent Events (SSE)
  • Plugin management and configuration
  • System monitoring and logs
  • Modern, responsive UI
  • RESTful API

Directory Structure

web_interface/
├── app.py                    # Main Flask application
├── start.py                  # Startup script
├── requirements.txt          # Python dependencies
├── blueprints/               # Flask blueprints
│   ├── api_v3/              # API endpoints (package: config, display,
│   │                        #   plugins, system, backup, fonts, misc,
│   │                        #   wifi, starlark)
│   └── pages_v3.py          # Page routes
├── templates/                # HTML templates
│   └── v3/
│       ├── base.html
│       └── partials/
└── static/                   # CSS/JS assets
    └── v3/
        ├── app.css
        ├── app.js
        ├── manifest.json     # PWA manifest
        ├── plugins_manager.js
        ├── icons/            # PWA / touch icons
        ├── js/               # Alpine, htmx, app shell, widgets, utils
        └── vendor/           # codemirror, fontawesome

Running the Web Interface

Standalone (Development)

From the project root:

python3 web_interface/start.py

As a Service (Production)

The web interface can run as a systemd service that starts automatically based on the web_display_autostart configuration setting:

sudo systemctl start ledmatrix-web
sudo systemctl enable ledmatrix-web  # Start on boot

Accessing the Interface

Once running, access the web interface at:

Configuration

The web interface reads configuration from:

  • config/config.json - Main configuration
  • config/config_secrets.json - API keys and secrets

API Documentation

The V3 API is the api_v3 blueprint, registered at /api/v3/ in app.py. For the complete list and request/response formats, see docs/REST_API_REFERENCE.md. Quick reference for the most common endpoints:

Configuration

  • GET /api/v3/config/main - Get main configuration
  • POST /api/v3/config/main - Save main configuration
  • GET /api/v3/config/secrets - Get secrets configuration
  • POST /api/v3/config/raw/main - Save raw main config (Config Editor)
  • POST /api/v3/config/raw/secrets - Save raw secrets

Display & System Control

  • GET /api/v3/system/status - System status
  • POST /api/v3/system/action - Control display (action body: start_display, stop_display, restart_display_service, restart_web_service, git_pull, reboot_system, shutdown_system, enable_autostart, disable_autostart)
  • GET /api/v3/display/current - Current display frame
  • GET /api/v3/display/on-demand/status - On-demand status
  • POST /api/v3/display/on-demand/start - Trigger on-demand display
  • POST /api/v3/display/on-demand/stop - Clear on-demand

Plugins

  • GET /api/v3/plugins/installed - List installed plugins
  • GET /api/v3/plugins/config?plugin_id=<id> - Get plugin config
  • POST /api/v3/plugins/config - Update plugin configuration
  • GET /api/v3/plugins/schema?plugin_id=<id> - Get plugin schema
  • POST /api/v3/plugins/toggle - Enable/disable plugin
  • POST /api/v3/plugins/install - Install from registry
  • POST /api/v3/plugins/install-from-url - Install from GitHub URL
  • POST /api/v3/plugins/uninstall - Uninstall plugin
  • POST /api/v3/plugins/update - Update plugin

Plugin Store

  • GET /api/v3/plugins/store/list - List available registry plugins
  • GET /api/v3/plugins/store/github-status - GitHub authentication status
  • POST /api/v3/plugins/store/refresh - Refresh registry from GitHub

Real-time Streams (SSE)

SSE stream endpoints are defined directly on the Flask app in app.py (stream_stats, stream_display, stream_logs, followed by their CSRF exemption and rate-limit hookup), not on the api_v3 blueprint:

  • GET /api/v3/stream/stats - System statistics stream
  • GET /api/v3/stream/display - Display preview stream
  • GET /api/v3/stream/logs - Service logs stream

Development

When making changes to the web interface:

  1. Edit files in this directory
  2. Test changes by running python3 web_interface/start.py
  3. Restart the service if running: sudo systemctl restart ledmatrix-web

Notes

  • Templates and static files use the v3/ prefix to allow for future versions
  • The interface uses Flask blueprints for modular organization
  • SSE streams provide real-time updates without polling