[Unit]
Description=DECNET API Service
Documentation=https://git.resacachile.cl/anti/DECNET/wiki/REST-API-Reference
After=network-online.target docker.service
Wants=network-online.target
Requires=docker.service

[Service]
Type=simple
User={{ user }}
Group={{ group }}
# docker.sock is group-readable by 'docker'; the API ingester tails container logs.
SupplementaryGroups=docker
WorkingDirectory={{ install_dir }}
EnvironmentFile=-{{ install_dir }}/.env.local
Environment=DECNET_SYSTEM_LOGS=/var/log/decnet/decnet.api.log
# ProtectHome=read-only (below) makes the user's $HOME read-only inside
# the unit's namespace, which breaks `docker compose build` because the
# CLI writes ~/.docker/buildx/activity/. Redirect the docker CLI's
# config root into install_dir (already in ReadWritePaths) so the
# hardening stays on without crippling the build path.
Environment=DOCKER_CONFIG={{ install_dir }}/.docker
Environment=BUILDX_CONFIG={{ install_dir }}/.docker/buildx
# Provision the Node toolchain used by fingerprint canaries. Non-fatal
# (leading '-'): if Node is missing the API still boots; minting a
# fingerprint canary returns a clear error at request time. Idempotent.
ExecStartPre=-{{ venv_dir }}/bin/decnet canary-install-toolchain
ExecStart={{ venv_dir }}/bin/decnet api
StandardOutput=append:/var/log/decnet/decnet.api.log
StandardError=append:/var/log/decnet/decnet.api.log

# MACVLAN/IPVLAN setup runs from the API lifespan when the embedded sniffer is on.
CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_RAW
AmbientCapabilities=CAP_NET_ADMIN CAP_NET_RAW

# Security Hardening
NoNewPrivileges=yes
ProtectSystem=full
#ProtectHome=read-only
PrivateTmp=yes
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes
RestrictSUIDSGID=yes
LockPersonality=yes
ReadWritePaths={{ install_dir }} /var/log/decnet

Restart=on-failure
RestartSec=5
TimeoutStopSec=15

[Install]
WantedBy=multi-user.target
