algorand-updater.yml

name: Check and Update Algorand Version

on:
  schedule:
    - cron: "0 0,12 * * *" # Runs at 00:00 and 12:00 UTC every day
  workflow_dispatch: # Allows manual triggering of the workflow

jobs:
  check-and-update-algorand-version:
    runs-on: macos-15
    concurrency:
      group: algorand-updater
      cancel-in-progress: false

    steps:
      - name: Checkout homebrew-tap repository
        uses: actions/checkout@v4

      - name: Get version from algorand.rb
        id: get_version
        run: |
          current_version=$(grep -E '^\s*url\s+"https://github.com/algorand/go-algorand/releases/download/v[0-9]+\.[0-9]+\.[0-9]+-stable/node_stable_darwin-universal_[0-9]+\.[0-9]+\.[0-9]+\.tar\.gz"' Formula/algorand.rb | grep -o 'v[0-9]\+\.[0-9]\+\.[0-9]\+' | sed 's/^v//')
          echo "current_version=$current_version" >> "$GITHUB_OUTPUT"

      - name: Fetch latest go-algorand stable tag
        id: fetch_tag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          response=$(curl -s -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/algorand/go-algorand/tags")
          latest_tag=$(echo "$response" | jq -r '[.[] | select(.name | contains("-stable"))][0].name' | sed 's/^v//; s/-stable$//')
          if [ -z "$latest_tag" ]; then
            echo "Error: Failed to fetch the latest stable tag."
            exit 1
          fi
          echo "latest_tag=$latest_tag" >> "$GITHUB_OUTPUT"

      - name: Compare versions
        id: compare_versions
        run: |
          homebrew_version="${{ steps.get_version.outputs.current_version }}"
          latest_tag="${{ steps.fetch_tag.outputs.latest_tag }}"
          echo "Homebrew version: $homebrew_version"
          echo "Latest tag: $latest_tag"
          if [ "$homebrew_version" != "$latest_tag" ]; then
            echo "mismatch=true" >> "$GITHUB_OUTPUT"
          else
            echo "mismatch=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Fetch checksum for latest release
        if: steps.compare_versions.outputs.mismatch == 'true'
        id: fetch_checksum
        run: |
          checksum=$(curl -sL "https://github.com/algorand/go-algorand/releases/download/v${{ steps.fetch_tag.outputs.latest_tag }}-stable/node_stable_darwin-universal_${{ steps.fetch_tag.outputs.latest_tag }}.tar.gz" | shasum -a 256 | awk '{print $1}')
          echo "checksum=$checksum" >> "$GITHUB_OUTPUT"

      - name: Update algorand.rb
        if: steps.compare_versions.outputs.mismatch == 'true'
        run: |
          sed -i '' "s|url \"https://github.com/algorand/go-algorand/releases/download/v[0-9.]*-stable/node_stable_darwin-universal_[0-9.]*.tar.gz\"|url \"https://github.com/algorand/go-algorand/releases/download/v${{ steps.fetch_tag.outputs.latest_tag }}-stable/node_stable_darwin-universal_${{ steps.fetch_tag.outputs.latest_tag }}.tar.gz\"|" Formula/algorand.rb
          sed -i '' "s/sha256 \".*\"/sha256 \"${{ steps.fetch_checksum.outputs.checksum }}\"/" Formula/algorand.rb

      - name: Test formula installation
        if: steps.compare_versions.outputs.mismatch == 'true'
        run: |
          brew install --build-from-source ./Formula/algorand.rb --formula 2>&1
          brew --prefix algorand --installed
          "$(brew --prefix algorand)/bin/algod" -v
          brew uninstall algorand

      - name: Commit and push changes
        if: steps.compare_versions.outputs.mismatch == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git add Formula/algorand.rb
          git commit -m "Update Algorand version to ${{ steps.fetch_tag.outputs.latest_tag }}"
          git push