#!/bin/sh

BLUR_FACTOR=64;

OPTIONAL_CMDS=("convert" "python3" "grim")

for CMD in $OPTIONAL_CMDS; do
	if ! command -v "$CMD" &> /dev/null
	then
		echo "$CMD could not be found, falling back to basic mode."

		swaylock --config ~/.config/sway/swaylock.config --color 302f3b $@

		exit 0
	fi
done

BASE_IMAGE_PATH="$(mktemp)"
INDEX=1

image_path() {
	echo "$BASE_IMAGE_PATH$1.jpg"
}

UPSCALE="$(python3 -c "print(100*$BLUR_FACTOR, end='')")%"
DOWNSCALE="$(python3 -c "print(100/$BLUR_FACTOR, end='')")%"

grim "$(image_path 1)"

convert -scale $DOWNSCALE -scale $UPSCALE "$(image_path 1)" "$(image_path 2)"
convert -composite -gravity center "$(image_path 2)" ~/.config/sway/ferris-stamp.png "$(image_path 3)"

swaylock --config ~/.config/sway/swaylock.config --image "$(image_path 3)"