Converts WoW TGA screenshots to PNG after Lutris is closed

wowtga2png.sh

#!/usr/bin/env bash

# Instructions
# - Copy contents of this script to a file `wowtga2png.sh`.
# - Make the script executable with `chmod +x wowtga2png.sh`.
# - Check that the paths of WOW_DIR and OUT_DIR are correct and use absolute paths for directories.
# - In Lutris:
#   - Click on the game and select "Configure".
#   - Toggle "Advance" in the dialog that just popped up.
#   - Go to "System Options" tab and scroll down to "Post-exit script".
#   - "Browse" and locate your script.
#   - Save and when you will exit Lutris screenshots will be converted to the format of your choosing.

# Set the WoW Screenshot directory and OUTPUT directory.
WOW_DIR=/home/m/Games/Turtle/Screenshots
OUT_DIR=/home/m/Pictures/WoW
OUT_FORMAT=png   # Should be a valid extension (png, jpg, bmp)

# check if there are any tga files in the TGA directory
if [ ! -e "$WOW_DIR"/*.tga ]; then
 	echo "No TGA files found in $WOW_DIR."
 	exit 1
fi

# Loop through all WoW tga files in the Screenshots directory.
for file in "$WOW_DIR"/*.tga; do
	# Get the filename without extension.
	filename=$(basename "$file" .tga)

	# Check if a corresponding file exists in the OUT directory.
	if [ -e "$OUT_DIR/$filename.png" ]; then
		echo "Skipping $filename.tga: $filename.$OUT_FORMAT already exists in $OUT_DIR."
	else
		# Convert WoW TGA Screenshot to OUT format and save in the OUT directory.
		convert "$file" "$OUT_DIR/$filename.$OUT_FORMAT"
		echo "Converted $filename.tga to $filename.$OUT_FORMAT and saved in $OUT_DIR."
	fi
done