#!/bin/bash
# ============================================================================
# DarkForge Linux — dhcpcd service
# ============================================================================
# DHCP client daemon for ethernet. Uses interface from rc.conf.
# ============================================================================

. /etc/rc.conf

DAEMON="/usr/sbin/dhcpcd"

# Auto-detect network interface if configured one doesn't exist
IFACE="${NETWORK_INTERFACE}"
if [ ! -d "/sys/class/net/${IFACE}" ] || [ "${IFACE}" = "lo" ]; then
    # Find first non-loopback ethernet interface
    for d in /sys/class/net/*; do
        name=$(basename "$d")
        [ "$name" = "lo" ] && continue
        # Skip wireless (has wireless/ subdir)
        [ -d "$d/wireless" ] && continue
        IFACE="$name"
        echo "  NOTE: ${NETWORK_INTERFACE} not found, using ${IFACE}"
        break
    done
fi

PIDFILE="/run/dhcpcd-${IFACE}.pid"

case "$1" in
    start)
        echo "  Starting dhcpcd on ${IFACE}..."
        if [ "${NETWORK_DHCP}" = "yes" ]; then
            ${DAEMON} -q "${IFACE}" && echo "  dhcpcd started"
        else
            # Static IP configuration
            ip addr add "${NETWORK_IP}/${NETWORK_MASK}" dev "${IFACE}"
            ip link set "${IFACE}" up
            ip route add default via "${NETWORK_GATEWAY}"
            if [ -n "${NETWORK_DNS}" ]; then
                echo "# Generated by rc.d/dhcpcd" > /etc/resolv.conf
                for dns in ${NETWORK_DNS}; do
                    echo "nameserver ${dns}" >> /etc/resolv.conf
                done
            fi
            echo "  Static IP configured: ${NETWORK_IP}"
        fi
        ;;
    stop)
        echo "  Stopping dhcpcd..."
        if [ -f "${PIDFILE}" ]; then
            ${DAEMON} -x "${IFACE}" 2>/dev/null
        fi
        echo "  dhcpcd stopped"
        ;;
    restart)
        $0 stop
        sleep 2
        $0 start
        ;;
    *)
        echo "Usage: $0 {start|stop|restart}"
        exit 1
        ;;
esac