#!/bin/bash

OUT="/run/BastionGuard.env"
rm -f "$OUT"

# Trova la sessione grafica attiva
SESSION=$(loginctl list-sessions --no-legend | awk '$3 ~ /tty|wayland|x11/ {print $1; exit}')

if [ -z "$SESSION" ]; then
    exit 0
fi

USER=$(loginctl show-session "$SESSION" -p Name --value)
UID=$(id -u "$USER")
RUNTIME="/run/user/$UID"

# DISPLAY
DISPLAY=$(loginctl show-session "$SESSION" -p Display --value)

# Se non c'è DISPLAY, prova Wayland
if [ -z "$DISPLAY" ] && [ -e "$RUNTIME/wayland-0" ]; then
    DISPLAY=""
    WAYLAND_DISPLAY="wayland-0"
fi

# DBus session bus
BUS="unix:path=$RUNTIME/bus"

# Scrivi l'ambiente
{
    echo "BastionGuard_USER=$USER"
    echo "BastionGuard_UID=$UID"
    echo "XDG_RUNTIME_DIR=$RUNTIME"
    echo "DBUS_SESSION_BUS_ADDRESS=$BUS"
    [ -n "$DISPLAY" ] && echo "DISPLAY=$DISPLAY"
    [ -n "$WAYLAND_DISPLAY" ] && echo "WAYLAND_DISPLAY=$WAYLAND_DISPLAY"
} > "$OUT"

chmod 644 "$OUT"