#!/usr/bin/bash
DEFAULT_RESOLUTION=$(xdpyinfo | awk '/dimensions/{print $2}')

# Steam Deck Default
SCREEN_WIDTH=1280
SCREEN_HEIGHT=800

# Sometimes gamescope's DRM-retrieved resolution values 
# don't work well with what gamescope actually allows, 
# and can result in a "verifying installation" hang.
# To fix that we have to make some adjustments for 
# those values to ones gamescope accepts.


# 32:9
if [[ $DEFAULT_RESOLUTION == 5120x1440 ]]; then
	SCREEN_WIDTH=5120
	SCREEN_HEIGHT=1440
fi
if [[ $DEFAULT_RESOLUTION == 3840x1080 ]]; then
	SCREEN_WIDTH=3840
	SCREEN_HEIGHT=1080
fi

# 21:9
if [[ $DEFAULT_RESOLUTION == 3440x1440 ]]; then
	SCREEN_WIDTH=3440
	SCREEN_HEIGHT=1440
fi
if [[ $DEFAULT_RESOLUTION == 2160x1080 ]]; then
	SCREEN_WIDTH=2160
	SCREEN_HEIGHT=1080
fi

# 16:10
# gamescope is not friendly to 16:10 aspect ratio other than it's default 1280x800, so we have to do some conversion:

if [[ $DEFAULT_RESOLUTION == 3840x2400 ]]; then
	SCREEN_WIDTH=3840
	SCREEN_HEIGHT=2160
fi

# Oddly enough many 2560x1600 laptops dont support 2560x1440, so we have to drop them down to 1920x1080
if [[ $DEFAULT_RESOLUTION == 2560x1600 ]]; then
	SCREEN_WIDTH=1920
	SCREEN_HEIGHT=1080
fi
if [[ $DEFAULT_RESOLUTION == 1920x1200 ]]; then
	SCREEN_WIDTH=1920
	SCREEN_HEIGHT=1080
fi

# 16:9
if [[ $DEFAULT_RESOLUTION == 3840x2160 ]]; then
	SCREEN_WIDTH=3840
	SCREEN_HEIGHT=2160
fi
if [[ $DEFAULT_RESOLUTION == 2560x1440 ]]; then
	SCREEN_WIDTH=2560
	SCREEN_HEIGHT=1440
fi
if [[ $DEFAULT_RESOLUTION == 1920x1080 ]]; then
	SCREEN_WIDTH=1920
	SCREEN_HEIGHT=1080
fi
if [[ $DEFAULT_RESOLUTION == 1280x720 ]]; then
	SCREEN_WIDTH=1280
	SCREEN_HEIGHT=720
fi

#Quirk for framework laptop:
if [[ $DEFAULT_RESOLUTION == 2256x1504 ]]; then
	SCREEN_WIDTH=2160
	SCREEN_HEIGHT=1080
fi

CONFIG=$HOME/.config/environment.d/gamescope-session.conf
if [ ! -f $CONFIG ]; then
	echo "Creating $CONFIG"
	mkdir -p $HOME/.config/environment.d/
	echo 'SCREEN_WIDTH='$SCREEN_WIDTH > $CONFIG
	echo 'SCREEN_HEIGHT='$SCREEN_HEIGHT >> $CONFIG
fi