#!/bin/sh

set -e

echo 'Creating temporary working directory...'
rm -rf /tmp/proton-ge-custom
mkdir /tmp/proton-ge-custom
cd /tmp/proton-ge-custom

echo 'Creating Steam directory if it does not exist...'
mkdir -p ~/.steam/root/compatibilitytools.d

echo 'Getting ProtonGE metadata'
METADATA=$(curl -s https://api.github.com/repos/GloriousEggroll/proton-ge-custom/releases/latest | grep browser_download_url | cut -d\" -f4)
test -n "$METADATA"
# If result is not empty, continue

echo 'Fetching tarball URL...'
TARBALL_URL=$(echo "$METADATA" | grep .tar.gz)
TARBALL_NAME=$(basename "$TARBALL_URL")
VERSION_NAME=$(echo "$TARBALL_NAME" | sed 's/.tar.gz//')
test -d ~/.steam/root/compatibilitytools.d/"$VERSION_NAME" && echo "Version $VERSION_NAME already present, aborting" && exit 0
echo "Downloading tarball: $TARBALL_NAME..."
curl -# -L "$TARBALL_URL" -o "$TARBALL_NAME" --no-progress-meter

echo 'Fetching checksum URL...'
CHECKSUM_URL=$(echo "$METADATA" | grep .sha512sum)
CHECKSUM_NAME=$(basename "$CHECKSUM_URL")
echo "Downloading checksum: $CHECKSUM_NAME..."
curl -# -L "$CHECKSUM_URL" -o "$CHECKSUM_NAME" --no-progress-meter

echo "Verifying tarball $TARBALL_NAME with checksum $CHECKSUM_NAME..."
sha512sum -c "$CHECKSUM_NAME"
# If result is ok, continue

echo "Extracting $TARBALL_NAME to Steam directory..."
tar -xf "$TARBALL_NAME" -C ~/.steam/root/compatibilitytools.d/
echo 'All done :)'