# Witryna - Git-based static site deployment orchestrator
#
# NOTE: This file is for MANUAL installations only.
# The Debian package ships its own unit in debian/witryna.service.
#
# Installation:
#   1. Create system user:
#        sudo adduser --system --group --no-create-home --home /var/lib/witryna witryna
#   2. Copy binary: sudo cp target/release/witryna /usr/local/bin/
#   3. Create config dir: sudo mkdir -p /etc/witryna
#   4. Copy config: sudo cp witryna.toml /etc/witryna/
#   5. Create dirs: sudo mkdir -p /var/lib/witryna/{clones,builds,cache} /var/log/witryna
#   6. Set ownership: sudo chown -R witryna:witryna /var/lib/witryna /var/log/witryna
#   7. Install service: sudo cp scripts/witryna.service /etc/systemd/system/
#   8. Reload systemd: sudo systemctl daemon-reload
#   9. Enable service: sudo systemctl enable witryna
#  10. Start service: sudo systemctl start witryna
#
# Podman rootless prerequisites (if using container_runtime = "podman"):
#   - Allocate sub-UIDs/GIDs for the witryna user:
#       sudo usermod --add-subuids 100000-165535 --add-subgids 100000-165535 witryna
#   - Enable lingering so the user session persists:
#       sudo loginctl enable-linger witryna
#   - Allow user namespaces via a systemd drop-in:
#       sudo mkdir -p /etc/systemd/system/witryna.service.d
#       printf '[Service]\nRestrictNamespaces=no\n' | \
#         sudo tee /etc/systemd/system/witryna.service.d/namespaces.conf
#   - Set XDG_RUNTIME_DIR via a systemd drop-in:
#       printf '[Service]\nEnvironment="XDG_RUNTIME_DIR=/run/user/%%U"\n' | \
#         sudo tee /etc/systemd/system/witryna.service.d/xdg-runtime.conf
#   - Reload systemd: sudo systemctl daemon-reload
#
# Usage:
#   sudo systemctl status witryna   # Check status
#   sudo systemctl restart witryna  # Restart service
#   sudo kill -HUP $(pidof witryna) # Hot-reload config
#   sudo journalctl -u witryna -f   # View logs

[Unit]
Description=Witryna - Git-based static site deployment orchestrator
Documentation=https://git.craftknight.com/dawid/witryna
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=witryna
Group=witryna

# Start the deployment server
ExecStart=/usr/local/bin/witryna serve --config /etc/witryna/witryna.toml
ExecReload=/bin/kill -HUP $MAINPID

# Environment
Environment="RUST_LOG=info"

# Restart policy
Restart=on-failure
RestartSec=5
StartLimitBurst=3
StartLimitIntervalSec=60

# Security hardening
NoNewPrivileges=yes
PrivateTmp=yes
ProtectSystem=strict
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
LockPersonality=yes
MemoryDenyWriteExecute=yes

# Note: ProtectHome=yes is NOT set because it hides /run/user/<uid>,
# which is required for rootless Podman. The witryna user's home is
# /var/lib/witryna (covered by ReadWritePaths), not /home.

# Allow read/write to witryna directories
ReadWritePaths=/var/lib/witryna
ReadWritePaths=/var/log/witryna

# Allow access to container runtime directories
# For Podman (rootless): needs /run/user/<uid> for XDG_RUNTIME_DIR
ReadWritePaths=/run/user
# For Docker:
# SupplementaryGroups=docker
# ReadWritePaths=/var/run/docker.sock

# Capabilities (minimal for container runtime access)
CapabilityBoundingSet=
AmbientCapabilities=

# Resource limits
LimitNOFILE=65536
LimitNPROC=4096

[Install]
WantedBy=multi-user.target