# This is a template. Do not install it directly -- run
# scripts/install/install_web_service.sh (or install_service.sh); the display
# service also installs it when automatic updates are turned on
# (src/auto_update_setup.py). Substitutes:
#   __PROJECT_ROOT_DIR__  -> the directory the project is installed in
#   __USER__              -> the user the web interface runs as
#
# Health check and rollback for the web interface's weekly automatic update
# (web_interface/auto_update.py). A separate unit because the check restarts
# ledmatrix-web.service, which would kill it if it ran there.
#
# Never enabled itself: ledmatrix-update-verify.path starts it when the web
# interface creates data/auto_update_verify.request. It runs as the web
# interface's own user, and ExecStart points at the copy the updater makes
# before pulling, so the update being checked cannot replace its checker.
# Command-line paths are quoted so an install folder with spaces still works.

[Unit]
Description=LED Matrix automatic update health check and rollback

[Service]
Type=oneshot
User=__USER__
WorkingDirectory=__PROJECT_ROOT_DIR__
# Consume the request first, so the path unit cannot start this again.
ExecStartPre=/bin/rm -f "__PROJECT_ROOT_DIR__/data/auto_update_verify.request"
ExecStart=/usr/bin/python3 "__PROJECT_ROOT_DIR__/data/auto_update_verifier.py" "__PROJECT_ROOT_DIR__"
TimeoutStartSec=30min
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=ledmatrix-update-verify