#!/bin/bash

# This script launches IntelliJ IDEA with the current project
# directory. The script is designed to be run by double-clicking it in
# the GNOME Nautilus file manager.

# First, we change the current working directory to the directory of
# the script.

# "${0%/*}" gives us the path of the script itself, without the
# script's filename.

# This command basically tells the system "change the current
# directory to the directory containing this script".

cd "${0%/*}"

# Then, we move up one directory level.
# The ".." tells the system to go to the parent directory of the current directory.
# This is done because we assume that the project directory is one level up from the script.
cd ..

# Now, we use the 'setsid' command to start a new session and run
# IntelliJ IDEA in the background. 'setsid' is a UNIX command that
# runs a program in a new session.

# The command 'idea .' opens IntelliJ IDEA with the current directory
# as the project directory.  The '&' at the end is a UNIX command that
# runs the process in the background.  The '> /dev/null' part tells
# the system to redirect all output (both stdout and stderr, denoted
# by '&') that would normally go to the terminal to go to /dev/null
# instead, which is a special file that discards all data written to
# it.

setsid idea . &>/dev/null &

# The 'disown' command is a shell built-in that removes a shell job
# from the shell's active list. Therefore, the shell will not send a
# SIGHUP to this particular job when the shell session is terminated.

# '-h' option specifies that if the shell receives a SIGHUP, it also
# doesn't send a SIGHUP to the job.

# '$!' is a shell special parameter that expands to the process ID of
# the most recent background job.
disown -h $!


sleep 2

# Finally, we use the 'exit' command to terminate the shell script.
# This command tells the system to close the terminal window after
# IntelliJ IDEA has been opened.
exit