PR 合併後自動新增版本號

auto-tag-after-pr.yml

name: Create Version Tag on PR Merge

on:
  pull_request:
    types:
      - closed

jobs:
  create_tag:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true && (startsWith(github.event.pull_request.head.ref, 'hotfix') || startsWith(github.event.pull_request.head.ref, 'feature'))

    steps:
    - name: Checkout code
      uses: actions/checkout@v2

    - name: Set up Git
      run: git config user.email "actions@github.com" && git config user.name "GitHub Actions"

    - name: Fetch latest tags
      run: git fetch --tags

    - name: Determine New Version
      id: version
      run: |
        branch_name="${{ github.event.pull_request.head.ref }}"
        latest_tag=$(git describe --tags `git rev-list --tags --max-count=1`)
        IFS='.' read -r -a version_parts <<< "$latest_tag"
        major_version="${version_parts[0]}"
        minor_version="${version_parts[1]}"
        patch_version="${version_parts[2]}"

        new_patch_version="${patch_version}"
        new_minor_version="${minor_version}"

        if [[ $branch_name == "hotfix"* ]]; then
          new_patch_version=$((patch_version + 1))
        elif [[ $branch_name == "feature"* ]]; then
          new_minor_version=$((minor_version + 1))
          new_patch_version="0"
        fi

        new_version="$major_version.$new_minor_version.$new_patch_version"
        echo "new_version=$new_version" >> $GITHUB_OUTPUT
      shell: bash

    - name: Create and Push New Version Tag
      run: |
        TAG="${{ steps.version.outputs.new_version }}"
        git tag $TAG
        git push origin $TAG
      shell: bash