add build.yml

Author: programmer1o1

.github/workflows/build.yml

@@ -0,0 +1,67 @@
+name: Build
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: [
+          "1.16", "1.16.1", "1.16.2", "1.16.3", "1.16.4", "1.16.5",
+          "1.17", "1.17.1", "1.18", "1.18.1", "1.18.2",
+          "1.19", "1.19.1", "1.19.2", "1.19.3", "1.19.4",
+          "1.20", "1.20.1", "1.20.2", "1.20.4", "1.20.6",
+          "1.21", "1.21.1", "1.21.2", "1.21.3", "1.21.4", "1.21.5", "1.21.8"
+        ]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v3
+
+      - name: Build with Gradle for MC ${{ matrix.version }}
+        run: |
+          ./gradlew "Set active project to ${{ matrix.version }}"
+          ./gradlew build
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: GreenTextMod-${{ matrix.version }}
+          path: build/libs/*.jar
+
+  collect-artifacts:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Organize artifacts
+        run: |
+          mkdir -p all-versions
+          find artifacts -name "*.jar" -exec cp {} all-versions/ \;
+
+      - name: Upload combined artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: GreenTextMod-all-versions
+          path: all-versions/*.jar