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#!/bin/bash

# Created By: srdusr
# Created On: Tue 07 Mar 2023 15:06:47 PM CAT
# Project: Agnostic scratchpad/dropdown terminal that works on most window managers

# Set the GDK_BACKEND and QT_QPA_PLATFORM environment variables to x11 to allow working in Wayland
export GDK_BACKEND=x11
export QT_QPA_PLATFORM=xcb

# List of supported terminals with dropdown class
supported_terminals=(
	"wezterm"
	"kitty"
	"alacritty"
)

# Check if any of the supported terminals with scratchpad class are running
for term in "${supported_terminals[@]}"; do
	if pgrep -f "$term.*--class scratchpad" >/dev/null; then
		my_term="$term"
		break
	fi
done

# If none of the supported terminals are running, start the first available one
if [ "$my_term" = "" ]; then
	for term in "${supported_terminals[@]}"; do
		if command -v "$term" >/dev/null 2>&1; then
			my_term="$term"
			break
		fi
	done
	if [ "$my_term" = "" ]; then
		echo "No supported terminal found."
		exit 1
	fi

	# Start the terminal with scratchpad class
	case "$my_term" in
	"wezterm")
		wezterm start --class scratchpad -e tmux new-session -A -s tmux -e bash >/dev/null 2>&1 &
		;;
	"kitty")
		kitty --class scratchpad tmux new-session -A -s tmux -e bash >/dev/null 2>&1 &
		;;
	"alacritty")
		alacritty --class scratchpad -e tmux new-session -A -s tmux -e bash >/dev/null 2>&1 &
		;;
	esac
fi

# Get the window ID of the scratchpad terminal
id="$(xdo id -N scratchpad)"

# Toggle the visibility of the scratchpad terminal
if [ "$id" != "" ]; then
	if xwininfo -id "$id" | grep "Map State: IsViewable" >/dev/null; then
		# The scratchpad window is visible, so hide it
		dimensions="$(xwininfo -id "$id" | awk '/Width:|Height:/ { printf("%s=%s;", tolower($1), $2) }')"
		xdo hide "$id" 2>/dev/null
	else
		# The scratchpad window is hidden, so show it
		xdo show "$id"
		# Restore the dimensions of the window
		xdotool windowsize "$id" "$(echo "$dimensions" | tr ';' ' ')" 2>/dev/null
	fi
fi