increment-version.yml

name: Increment version

on:
  workflow_dispatch:
    inputs:
      increment-version:
        description: Increment version (Semantic Versioning)
        required: true
        default: patch
        type: choice
        options:
          - major
          - minor
          - patch

jobs:
  increment-version:
    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:
      - name: Latest version
        run: |
          set -x
          tag=$(gh api /repos/${GITHUB_REPOSITORY}/releases/latest --jq '.tag_name')
          echo "LATEST_VERSION=$tag" >> $GITHUB_ENV
        env:
          GH_TOKEN: ${{ github.token }}
      - name: Next version
        id: next-version
        run: |
          set -x
          
          if [[ ${LATEST_VERSION} =~ ^(.*?)([0-9]+)\.([0-9]+)\.([0-9]+)$ ]]; then
            prefix=${BASH_REMATCH[1]}
            major=${BASH_REMATCH[2]}
            minor=${BASH_REMATCH[3]}
            patch=${BASH_REMATCH[4]}
          else
            exit 1
          fi
          
          case "$INCREMENT_VERSION" in
            "major")
              ((++major)); minor=0; patch=0;;
            "minor")
              ((++minor)); patch=0;;
            "patch")
              ((++patch));;
          esac
          
          next_version="${prefix}${major}.${minor}.${patch}"
          echo "NEXT_VERSION=$next_version" >> $GITHUB_ENV
        env:
          INCREMENT_VERSION: ${{ github.event.inputs.increment-version }}
    
      - uses: actions/checkout@v3
      - name: Update README
        id: version
        run: |
          set -x
          sed -i -e "s|${GITHUB_REPOSITORY}@${LATEST_VERSION}|${GITHUB_REPOSITORY}@${NEXT_VERSION}|g" README.md
          git diff
      - uses: snow-actions/git-config-user@v1.0.0
      - id: generate-token
        uses: tibdex/github-app-token@v1.7.0
        with:
          app_id: ${{ secrets.APP_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}
      - name: Commit & PR
        run: |
          set -x
          branch="release/${NEXT_VERSION}"
          git switch -c ${branch}
          git add .
          git commit -m "${NEXT_VERSION}"
          git push origin ${branch}
          gh pr create --base ${GITHUB_REF_NAME} --head ${branch} --assignee ${GITHUB_ACTOR} --title ${NEXT_VERSION} --body ''
        env:
          GH_TOKEN: ${{ steps.generate-token.outputs.token }}