fix: prerelease dependent on build success [macata #101]

Author: DazedNConfused-

.github/workflows/build.yml

@@ -1,25 +1,61 @@
-name: Java build & test
+name: Pre-release on develop merge
 
-on: [push]
+on:
+  workflow_run:
+    workflows: ["Java build & test"]
+    types:
+      - completed
 
 jobs:
-  build:
+  build-and-release:
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v3
+
       - name: Set up JDK 18
         uses: actions/setup-java@v3
         with:
           java-version: '18'
           distribution: 'adopt'
           cache: maven
+
       - name: Cache local Maven repository
         uses: actions/cache@v3
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
           restore-keys: |
-            ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+            ${{ runner.os }}-maven-
+
       - name: Build with Maven
-        run: mvn package
+        run: mvn package
+
+      - name: Extract Version from POM
+        id: extract_version
+        run: echo "version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)" >> $GITHUB_OUTPUT
+
+      - name: Generate Timestamp
+        id: gen_timestamp
+        run: echo "timestamp=$(date +'%Y%m%d_%H%M%S')" >> $GITHUB_OUTPUT
+
+      - name: Create Pre-release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: prerelease-${{ steps.extract_version.outputs.version }}-${{ steps.gen_timestamp.outputs.timestamp }}
+          release_name: Pre-release ${{ steps.extract_version.outputs.version }} (${{ steps.gen_timestamp.outputs.timestamp }})
+          draft: false
+          prerelease: true
+
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./target/macatalauncher-${{ steps.extract_version.outputs.version }}.jar
+          asset_name: macatalauncher-${{ steps.extract_version.outputs.version }}-${{ steps.gen_timestamp.outputs.timestamp }}.jar
+          asset_content_type: application/java-archive