Fix workflow #36

	name: Java CI with Gradle

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest

	env:
	LATEST_VERSION: "1.21"
	INCLUDE_DEVLIBS: "true"

	# Warning: Don't add too many versions because it takes a lot of space in the artifacts,
	# and I've gotten an email from GitHub about it so please just don't.
	VERSIONS_TO_BUILD: "1.16.5 1.17.1 1.18.2 1.20.4 1.21"

	steps:
	- uses: actions/checkout@v2

	- name: Set up JDK 21
	uses: actions/setup-java@v2
	with:
	java-version: '21'
	distribution: 'adopt'

	- name: Grant execute permission for gradlew
	run: chmod +x gradlew

	- name: Create versions directory and mainProject
	run: \|
	mkdir -p ./versions
	if [ ! -f ./versions/mainProject ]; then
	echo $LATEST_VERSION > ./versions/mainProject
	fi

	- name: Build with Gradle
	run: ./gradlew build

	- name: Create artifact directory structure
	run: \|
	mkdir -p artifacts
	for version in $VERSIONS_TO_BUILD; do
	mkdir -p artifacts/$version/libs
	cp ./versions/$version/build/libs/*.jar artifacts/$version/libs/
	if [ "$INCLUDE_DEVLIBS" = "true" ]; then
	mkdir -p artifacts/$version/devlibs
	cp ./versions/$version/build/devlibs/*.jar artifacts/$version/devlibs/
	fi
	done

	- name: Compute hashes
	run: \|
	touch artifacts/hashes.txt
	for jar in $(find artifacts -name '*.jar'); do
	sha256sum $jar >> artifacts/hashes.txt
	done

	- name: Archive Artifacts
	uses: actions/upload-artifact@v2
	with:
	name: Artifacts
	path: artifacts

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