tag-patches.yml

name: Tag new patch releases on branch push

on:
  push:
    branches: [ stable ]
  workflow_dispatch:

jobs:
  build:
    name: Tag new patch release
    runs-on: ubuntu-latest
    if: "github.event_name == 'workflow_dispatch' || startsWith(github.event.head_commit.message, 'New translations') || startsWith(github.event.head_commit.message, 'New Crowdin updates') "
    concurrency: tag-patches

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0 #we need to fetch tags to calculate new patch number
      
      - name: Tag new version
        run: |
          BASE_VERSION="2.22"

          PREVIOUS_TAG=$(git tag --list | awk -v s="$BASE_VERSION." 'index($0, s) == 1' | sort -r --version-sort | head -n1)
          echo "Previous tag is $PREVIOUS_TAG"
          PREVIOUS_PATCH=$(echo "$PREVIOUS_TAG" | cut -d. -f3)

          regex='^[0-9]+$'
          if [[ "$PREVIOUS_PATCH" =~ ^[0-9]+$ ]]; then
            PATCH_VERSION="$(($PREVIOUS_PATCH+1))"
          elif [[ "$PREVIOUS_PATCH" == "" ]]; then
            PATCH_VERSION="0"
          else
            echo "Can't calculate next patch number from tag $PREVIOUS_TAG"
            exit 1
          fi

          FULL_VERSION="$BASE_VERSION.$PATCH_VERSION"

          echo "Tagging version $FULL_VERSION"

          git config user.name github-actions
          git config user.email github-actions@github.com
          git tag "$FULL_VERSION"
      
      - name: Push changes
        run: git push origin --tags