#!/bin/bash

###############################################################################
# Script Name: screenshot_grab.sh
#
# Description:
#   Interactive screenshot capture tool for GNOME desktops.
#
#   The script automatically determines a destination directory from an
#   open Texmaker project when possible. If no Texmaker project is detected,
#   the user is prompted to choose a destination folder manually.
#
#   Features:
#     - Automatic Texmaker project path detection
#     - Manual directory selection fallback
#     - User-defined screenshot filenames
#     - Duplicate filename detection
#     - Automatic filename copy to clipboard
#     - Area screenshot capture using gnome-screenshot
#     - Screenshot preview/confirmation loop
#
# Requirements:
#   - Bash
#   - zenity
#   - gnome-screenshot
#   - xclip
#   - Texmaker (optional)
#
# Usage:
#   ./screenshot_grab.sh
#
# Workflow:
#   1. Detect current Texmaker project folder or ask for a directory.
#   2. Enter a screenshot filename.
#   3. Filename is copied to the clipboard automatically.
#   4. Select a screen area using gnome-screenshot.
#   5. Confirm the result.
#   6. Retake the screenshot until satisfied.
#
# Output:
#   <selected_directory>/<filename>.png
#
# Notes:
#   - The line beginning with ### contains the default fallback directory.
#   - Existing filenames are checked before capturing.
#   - Cancelling any dialog exits the script.
#
###############################################################################

###/data/DatenLucas/Dokumente/Studium/Master/3.Semester/Mechatronische Systeme/Lernunterlagen/
DEFAULT_DIR="$(cat ~/scripts/screenshot_grab.sh | grep "###" | grep -v grep | sed 's/###//g')"
cont=1
PATH="$(ps -elf | grep -v grep | grep -o -P '(?<=texmaker ).*(?=/.*\.tex)')/"
if [ "$PATH" == "/" ]; then 
#	/usr/bin/zenity --error --text="No Filepath detected"
#	exit 0
	while [ $cont -eq 1 ]; do
		PATH="$(/usr/bin/zenity  --file-selection --title="No TEX open: Where the FUCK shall I go???" --directory --width=600 --height=400  --filename="$DEFAULT_DIR")"
		ret=$?
		if [[ "$PATH" != "/" ]] && [[ -d "$PATH" ]] && [[ $ret -eq 0 ]]; then
			cont=0
		elif [[ $ret -eq 1 ]]; then
			exit 1
		fi
	done
	PATH="$PATH/"
fi
text="Filename exists:"
NAME="$(/usr/bin/zenity --entry --ok-label="Fuck" --title="Filename" --text="Enter Name:")"
while [ $cont -eq 1 ]; do
	if [ -a "$PATH$NAME.png" ]; then
		NEWNAME="$(/usr/bin/zenity --entry --entry-text="$NAME" --cancel-label="Fuck It!" --ok-label="New Fuck" --title="Shit Shit Shit" --text="$text")"
		ret=$?
		if [[ "$NEWNAME" == "" ]] && [[ $ret -eq 1 ]]; then
			cont=0
		elif [[ "$NAME" != "$NEWNAME" ]] && [[ $ret -eq 0 ]]; then
			NAME=$NEWNAME
			cont=0
		elif [[ "$NAME" == "$NEWNAME" ]] && [[ $ret -eq 0 ]]; then
			text="I said new name you stupd fucking Idiot"
		else
			/usr/bin/zenity --error --title "Fuck Fuck Fuck Error" --text='Some Fucking unexpected State'
		fi
	else
		cont=0
	fi
done
if [ "$NAME" == "" ]; then 
	exit 1;
fi
printf "%s" "$NAME" | /usr/bin/xclip -sel clip
NAME="$NAME.png"
printf "%s\n" "$PATH$NAME"
cont=1
while [ $cont -eq 1 ]; do
/usr/bin/gnome-screenshot -a -f "$PATH$NAME"
/usr/bin/zenity --title="Confirmation" --text="Picture OK?" --ok-label="Fuck Yes" --cancel-label="Fuck No" --question
cont=$?
done