Add workflow to automate Gradle wrapper updates in shared

.github/workflows/gradle-wrapper-update.yml

@@ -0,0 +1,117 @@
+name: MT Update Gradle Wrapper
+on:
+  workflow_dispatch: # manual
+    inputs:
+      gradle-version:
+        description: 'Gradle version to update to (e.g., 8.13)'
+        required: true
+        type: string
+      gradle-distribution-sha256-sum:
+        description: 'SHA256 checksum of the Gradle distribution (find at https://gradle.org/release-checksums/)'
+        required: true
+        type: string
+# gh workflow run gradle-wrapper-update.yml --ref <branch> -f gradle-version=8.13 -f gradle-distribution-sha256-sum=<sha256>
+# gh run list --workflow=gradle-wrapper-update.yml
+env:
+  MT_BOT_USER_NAME: ${{ vars.MT_BOT_USER_NAME }}
+  MT_BOT_USER_EMAIL: ${{ vars.MT_BOT_USER_EMAIL }}
+  MT_BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
+jobs:
+  MT-UPDATE-GRADLE-WRAPPER-JOB:
+    name: "MT Update Gradle wrapper"
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: MT select main repo checkout branch
+        id: mt-pick-main-repo-checkout-branch
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          MAIN_REPO_URL="https://github.com/mtransitapps/mtransit-for-android.git"
+          BRANCH_EXISTS=$(git ls-remote --heads $MAIN_REPO_URL $MT_BRANCH_NAME | wc -l);
+          if [ $BRANCH_EXISTS -eq 1 ]; then
+            CHECKOUT_BRANCH=$MT_BRANCH_NAME
+          else
+            echo "WARNING: no match for current branch!!!"
+            DEFAULT_REPO_BRANCH=$(gh api repos/mtransitapps/mtransit-for-android --jq '.default_branch');
+            CHECKOUT_BRANCH=$DEFAULT_REPO_BRANCH
+          fi
+          echo "Checkout branch: '$CHECKOUT_BRANCH'."
+          echo "mt_checkout_branch=$CHECKOUT_BRANCH" >> "$GITHUB_OUTPUT"
+      - name: MT check out main repo
+        uses: actions/checkout@v6
+        with:
+          repository: mtransitapps/mtransit-for-android
+          ref: ${{ steps.mt-pick-main-repo-checkout-branch.outputs.mt_checkout_branch }}
+          submodules: true
+          token: ${{ secrets.MT_PAT || secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
+      - name: MT check out submodules
+        run: ./checkout_submodules.sh
+      - name: MT check out this module repo branch
+        run: |
+          REPOSITORY_OWNER_AND_NAME=${{ github.repository }};
+          REPOSITORY_NAME=$(basename $REPOSITORY_OWNER_AND_NAME);
+          echo "Repository name: '$REPOSITORY_NAME'."
+          echo "Fetching from repo '$REPOSITORY_NAME':"
+          git -C $REPOSITORY_NAME fetch -v --all;
+          echo "Checking out this repo '$REPOSITORY_NAME' workflow branch '$MT_BRANCH_NAME':"
+          git -C $REPOSITORY_NAME switch $MT_BRANCH_NAME;
+          echo "Pulling from repo '$REPOSITORY_NAME':"
+          git -C $REPOSITORY_NAME pull -v;
+      - name: MT setup
+        run: ./.github/actions/setup/run.sh
+      - name: MT set up JDK 17
+        uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+      - name: MT update gradle wrapper
+        run: |
+          echo "Updating Gradle wrapper to version ${{ inputs.gradle-version }}..."
+          ./gradlew wrapper --gradle-version ${{ inputs.gradle-version }} --gradle-distribution-sha256-sum=${{ inputs.gradle-distribution-sha256-sum }}
+          echo "Gradle wrapper updated successfully."
+      - name: MT copy gradle files to commons/shared
+        run: |
+          echo "Copying gradle files to commons/shared/..."
+          cp -R ./gradle commons/shared/
+          cp ./gradlew commons/shared/
+          cp ./gradlew.bat commons/shared/
+          echo "Files copied successfully."
+          echo "Verifying copied files:"
+          ls -la commons/shared/gradle commons/shared/gradlew*
+      - name: MT commit and push changes
+        run: |
+          cd commons || exit 1;
+          git config user.name "$MT_BOT_USER_NAME";
+          git config user.email "$MT_BOT_USER_EMAIL";
+          git add -v shared/gradle*;
+          git diff --staged --quiet || git commit -m "Update Gradle wrapper to ${{ inputs.gradle-version }}";
+          git push;
+          cd .. || exit 1;
+      - name: MT create pull request
+        env:
+          GH_TOKEN: ${{ secrets.MT_PAT || secrets.GITHUB_TOKEN }}
+        run: |
+          cd commons || exit 1;
+          PR_TITLE="Update Gradle wrapper to ${{ inputs.gradle-version }}"
+          PR_BODY="This PR updates the Gradle wrapper to version ${{ inputs.gradle-version }}.
+
+          **Gradle Version:** ${{ inputs.gradle-version }}
+          **SHA256 Checksum:** ${{ inputs.gradle-distribution-sha256-sum }}
+
+          Generated by workflow: ${{ github.workflow }}
+          Triggered by: @${{ github.actor }}"
+          # Check if PR already exists
+          EXISTING_PR=$(gh pr list --head "$MT_BRANCH_NAME" --json number --jq '.[0].number' || echo "")
+
+          if [ -n "$EXISTING_PR" ]; then
+            echo "Pull request #$EXISTING_PR already exists for branch $MT_BRANCH_NAME"
+            gh pr view $EXISTING_PR
+          else
+            echo "Creating pull request..."
+            gh pr create --title "$PR_TITLE" --body "$PR_BODY" --head "$MT_BRANCH_NAME" || echo "PR creation failed or PR already exists"
+          fi
+          cd .. || exit 1;

.gitignore

@@ -1,5 +1,8 @@
 # IntelliJ
 *.iml
 
+# Gradle
+.gradle/
+
 # TOML Dependency updater file
 *.updates.toml