[Unit]
Description=Mosaic tmux fleet agent %i
Documentation=https://git.mosaicstack.dev/mosaicstack/stack
Requires=mosaic-tmux-holder.service
After=mosaic-tmux-holder.service
PartOf=mosaic-tmux-holder.service

[Service]
Type=oneshot
RemainAfterExit=yes
# No default MOSAIC_TMUX_SOCKET: an absent roster socket means the literal
# default tmux socket (no -L). The per-agent .env sets it when the roster names
# one; otherwise it stays unset and start-agent-session.sh uses the default socket.
Environment=MOSAIC_AGENT_NAME=%i
Environment=MOSAIC_AGENT_RUNTIME=pi
Environment=MOSAIC_AGENT_WORKDIR=%h
EnvironmentFile=-%h/.config/mosaic/fleet/agents/%i.env
ExecStart=/bin/bash %h/.config/mosaic/tools/fleet/start-agent-session.sh %i
ExecStop=-/bin/bash -lc 'if [ -n "${MOSAIC_TMUX_SOCKET:-}" ]; then tmux -L "$MOSAIC_TMUX_SOCKET" kill-session -t "=%i"; else tmux kill-session -t "=%i"; fi'

[Install]
WantedBy=default.target