Refactor backtunnel-share with cleanup logic, duration-based termination, and improved error handling; introduce backtunnel-share-gui for streamlined GUI-based operation

scripts/backtunnel-share-gui

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2025. LUXIM d.o.o., Slovenia - Matjaž Mozetič.
+
+# GUI wrapper for BackTunnel "Share" action (Dolphin service menu)
+# Prompts for parameters via kdialog and launches backtunnel-share in Konsole.
+
+set -euo pipefail
+
+# --- Selection from Dolphin ---
+FOLDER="${1:-}"
+if [[ -z "$FOLDER" ]]; then
+  kdialog --error "No folder selected." || true
+  exit 1
+fi
+
+# --- Defaults ---
+REMOTE_DEFAULT="user@vps.example.com"
+DURATION_DEFAULT="2h"
+TPORT_DEFAULT="2222"
+LPORT_DEFAULT="22"
+INVITE_MOUNT_DEFAULT="/mnt/remote-rssh"
+
+# --- Prompts ---
+REMOTE="$(kdialog --inputbox "Remote (user@host or user:host):" "$REMOTE_DEFAULT")" || exit 1
+DUR="$(kdialog --combobox "Share duration" 30m 2h 6h 1d 2d --editable "$DURATION_DEFAULT")" || exit 1
+TPORT="$(kdialog --inputbox "Tunnel port on remote:" "$TPORT_DEFAULT")" || exit 1
+LPORT="$(kdialog --inputbox "Local SSH port to expose:" "$LPORT_DEFAULT")" || exit 1
+
+INV=""   # explicit if-then; avoids SC2015 ("A && B || C is not if-then-else")
+if kdialog --yesno "Print invite line for chat?"; then
+  INV="-i"
+fi
+
+QR=""
+if kdialog --yesno "Show QR code for the invite?"; then
+  QR="--qr"
+fi
+
+MP="$(kdialog --inputbox "Suggested mount point in invite:" "$INVITE_MOUNT_DEFAULT")" || exit 1
+
+# --- Run share in Konsole (keeps session open) ---
+exec konsole --noclose -e backtunnel-share \
+  "$FOLDER" with "$REMOTE" for "$DUR" \
+  -p "$TPORT" -l "$LPORT" $INV $QR --invite-mount "$MP"