changelog.yml

name: Auto Changelog Update

on:
  push:
    branches:
      - main

jobs:
  update_changelog:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 1

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'

      - name: Configure Git
        run: |
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git config --global user.name "github-actions[bot]"

      - name: Check if "auto-changelog-update-do-not-create-manually" branch exists
        id: check_branch
        run: |
          if [ -n "$(git ls-remote --heads origin auto-changelog-update-do-not-create-manually)" ]; then
            git fetch origin auto-changelog-update-do-not-create-manually
            echo "branch_exists=true" >> $GITHUB_ENV
          else
            echo "branch_exists=false" >> $GITHUB_ENV
          fi

      - name: Generate Changelog Update and update if branch exists
        run: |
          npm install -g conventional-changelog-cli
          if [ "$branch_exists" == "true" ]; then
            git checkout auto-changelog-update-do-not-create-manually
            git merge main --strategy-option theirs --allow-unrelated-histories --no-edit
            conventional-changelog -p angular -i CHANGELOG.md -s
            git add CHANGELOG.md
            git commit -m "Update CHANGELOG.md [skip ci]"
            git push origin auto-changelog-update-do-not-create-manually
            exit 0
          else
            git checkout main
            git checkout -b auto-changelog-update-do-not-create-manually
            git push origin auto-changelog-update-do-not-create-manually
            conventional-changelog -p angular -i CHANGELOG.md -s
          fi

      - name: Create Pull Request
        if: env.branch_exists == 'false'
        id: cpr
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "Update CHANGELOG.md [skip ci]"
          title: "Chore(changelog): Automated Changelog Update [skip ci]"
          body: "Update the CHANGELOG.md with recent pushes to branch main."
          base: "main"
          branch: "auto-changelog-update-do-not-create-manually"
          delete-branch: true

      - name: Check outputs
        if: env.branch_exists == 'false'
        run: |
          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"

      - name: Log if PR updated
        if: steps.cpr.outputs.pull-request-operation == 'updated'
        run: |
          echo "Changelog PR updated due to new commit to main."