favoritter/dist/postinstall.sh

#!/bin/sh
# Post-install script for Favoritter .deb/.rpm package.
# Creates the system user, sets directory permissions, and handles upgrades.
#
# Debian/Ubuntu: called with "configure" on install/upgrade.
# RPM: called with 1 on first install, 2+ on upgrade.
set -e

# Create system user if it doesn't exist.
if ! getent passwd favoritter >/dev/null 2>&1; then
    useradd -r -s /usr/sbin/nologin -d /var/lib/favoritter favoritter
fi

# Ensure data directories exist with correct ownership.
install -d -o favoritter -g favoritter -m 0750 /var/lib/favoritter
install -d -o favoritter -g favoritter -m 0750 /var/lib/favoritter/uploads

# Reload systemd to pick up any service file changes.
if command -v systemctl >/dev/null 2>&1; then
    systemctl daemon-reload

    # On upgrade: restart the service if it was running.
    # This picks up the new binary without losing enable/disable state.
    if systemctl is-active --quiet favoritter 2>/dev/null; then
        systemctl restart favoritter
    fi
fi