[Unit]
Description=mediapi player (X kiosk: one mpv mirrored across all HDMI outputs)
# Wait until udev has settled so the DRM/HDMI devices (/dev/dri/*) exist before
# X tries to grab them. Without this a cold-boot race can leave X unable to find
# a screen. (systemd-udev-settle is deprecated but still the simplest reliable
# gate here; the session script additionally waits for connectors to appear.)
After=local-fs.target systemd-udev-settle.service
Wants=systemd-udev-settle.service

[Service]
Type=simple
User=${MEDIAPI_USER}
# video+render: GPU/DRM access. input: evdev under X. tty: own the VT for X.
SupplementaryGroups=video render input tty
# A controlling tty so the X server can take over VT 7.
TTYPath=/dev/tty7
StandardInput=tty
StandardOutput=journal
StandardError=journal
RuntimeDirectory=mediapi
RuntimeDirectoryMode=0770
# xinit starts the X server on VT 7 and runs the session script as its client.
# The session mirrors the HDMI outputs (single DRM master) and execs one mpv.
# Non-root X is permitted via /etc/X11/Xwrapper.config (installed by install.sh).
ExecStart=/usr/bin/xinit ${PROJECT_DIR}/scripts/mediapi-session.sh -- :0 vt7 -nolisten tcp -keeptty
Restart=on-failure
RestartSec=2

[Install]
WantedBy=multi-user.target