init: added workflows for auto bump

.github/workflows/bump-ttymer.yml

@@ -0,0 +1,61 @@
+name: Bump TTYmer
+
+on:
+  workflow_dispatch:  # manual trigger
+  schedule:
+    - cron: '0 * * * *'  # hourly check
+  repository_dispatch:
+    types: [release]
+
+jobs:
+  bump-formula:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Setup Ruby (for Homebrew)
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.1
+
+      - name: Install dependencies
+        run: gem install --no-document toml-rb
+
+      - name: Fetch latest release info
+        id: release
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const { data: release } = await github.rest.repos.getLatestRelease({
+              owner: 'darwincereska',
+              repo: 'ttymer'
+            })
+            return release
+
+      - name: Calculate SHA256 of tarball
+        id: sha256
+        run: |
+          curl -L -o release.tar.gz ${{ steps.release.outputs.data.tarball_url }}
+          sha256sum release.tar.gz | awk '{ print $1 }' > sha256.txt
+          echo "::set-output name=hash::$(cat sha256.txt)"
+
+      - name: Update formula file
+        run: |
+          VERSION=${{ steps.release.outputs.data.tag_name }}
+          SHA256=${{ steps.sha256.outputs.hash }}
+          FORMULA_FILE=Formula/ttymer.rb
+          # Replace url and sha256 in the formula
+          sed -i "s|url \".*\"|url \"https://github.com/darwincereska/ttymer/archive/refs/tags/${VERSION}.tar.gz\"|g" $FORMULA_FILE
+          sed -i "s/sha256 \".*\"/sha256 \"${SHA256}\"/g" $FORMULA_FILE
+          sed -i "s/version \".*\"/version \"${VERSION#v}\"/g" $FORMULA_FILE || echo "No version line to update"
+
+      - name: Commit and push changes
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add Formula/ttymer.rb
+          git commit -m "Bump ttymer to $VERSION" || echo "No changes to commit"
+          git push origin HEAD:main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}