[Unit]
Description=Piper TTS HTTP server — Chinese voice (read-aloud backend for petal)
After=network-online.target
Wants=network-online.target
# Give up loudly instead of retrying forever. This service once failed 26,800+
# times over a day without anyone noticing: RestartSec=3 means only ~3 restarts
# land inside systemd's default 10s StartLimitIntervalSec, so the default burst
# of 5 was never reached and the unit never entered `failed`. Widening the
# window to 5 minutes makes a genuinely broken Piper show up in
# `systemctl --user --failed` while still riding out transient blips.
StartLimitIntervalSec=300
StartLimitBurst=5

[Service]
Type=simple
# Bound to loopback only — petal proxies to it; never exposed off-box.
ExecStart=%h/piper/venv/bin/python -m piper.http_server \
  -m zh_CN-huayan-medium \
  --data-dir %h/piper/voices \
  --host 127.0.0.1 --port 5006
Restart=on-failure
RestartSec=3

[Install]
WantedBy=default.target