script to set display settings based on the existence of a screen

screen.sh

#/usr/bin/env bash

set -x +o pipefail

# Get the current output of hyprland monitors command
output=$(hyprctl monitors -j)

# Check if the HDMI-A-1 display exists in the output
# use grep because it fails if it doesn't find anything, unlike jq.
if echo "$output" | grep "HDMI-A-1"; then
    # If the external display exists, set the eDPI-1 resolution to 1920x1200 at 60fps
    # Set the resolution of the external display to its maximum size and refresh rate
    max_size=$(echo "$output" | jq '.[] | select(.name == "HDMI-A-1") | .width, .height' | head -n 1 | awk '{printf "%dx%d", $1, $2}')
    max_refresh=$(echo "$output" | jq '.[] | select(.name == "HDMI-A-1") | .refreshRate' | head -n 1)

    hyprctl --batch "keyword monitor eDP-1, 1920x1200@60, 0x0, 1; keyword monitor HDMI-A-1, ${max_size}@${max_refresh}, -${max_size}x0, 1"
else
    hyprctl keyword monitor eDP-1, 2560x1600@60, 0x0, 1
fi