changelog.yml

---
name: Changelog

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 4
    if: "!contains(github.event.head_commit.message, 'update changelog')"
    steps:
      - uses: actions/checkout@v4
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 3.1.0
      - name: Install `github_changelog_generator`
        run: |
          command gem install github_changelog_generator
      - name: Install `markdownlint`
        run: |
          command npm install markdownlint
          command npm install markdownlint-cli
      - name: Create local changes
        run: |
          command github_changelog_generator \
            --user "$(
              command git config --get-regexp -- 'remote.*url' |
                command sed -E \
                  -e 's/(git@|https:\/\/)//' \
                  -e 's/:/\//' \
                  -e 's/\.git$//' |
                command awk -F '/' '{print $2}' |
                command head -n 1
            )" \
            --project "$(
              command git remote get-url "$(
                {
                  command git config --get --worktree checkout.defaultRemote ||
                    command git config --get --local checkout.defaultRemote ||
                    command git config --get --system checkout.defaultRemote ||
                    command git config --get --global checkout.defaultRemote
                } 2>/dev/null ||
                  printf 'origin'
              )" |
                command tr -d '[:space:]' |
                command xargs basename |
                command sed -e 's/\.git$//'
            )" \
            --token ${{ secrets.GITHUB_TOKEN || secrets.PAT }} \
            --exclude-labels 'duplicate,question,invalid,wontfix,nodoc' \
            --output "$(
              command find -- . \
                -maxdepth 1 \
                -type f \
                -name '*.m*d*' \
                '(' \
                -name 'change*log*' -o \
                -name 'CHANGE*LOG*' \
                ')' |
                command sed -e 's/^.\///'
            )"
      - name: Repair changelog credit
        run: |
          command find -- . \
            -maxdepth 1 \
            -type f \
            -name '*.m*d*' \
            '(' \
            -name 'change*log*' -o \
            -name 'CHANGE*LOG*' \
            ')' \
            -print \
            -exec sed -i \
            -e 's/This Changelog/This changelog/' \
            -e 's/automatically generated/\[automatically generated\]()/' \
            -e 's/\]()/\](.\/.github\/workflows\/changelog.yml)/' \
            -e 's/generator)\*/generator).\*/' '{}' '+'
      - name: Lint changelog
        run: |
          command find -- . \
            -maxdepth 1 \
            -type f \
            -name '*.m*d*' \
            '(' \
            -name 'change*log*' -o \
            -name 'CHANGE*LOG*' \
            ')' \
            -print \
            -exec npm exec -- markdownlint --fix -- '{}' ';'
      - name: Commit files
        run: |
          command git config -- user.email 'actions@github.com'
          command git config -- user.name 'GitHub'
          command find -- . \
            -maxdepth 1 \
            -type f \
            -name '*.m*d*' \
            '(' \
            -name 'change*log*' -o \
            -name 'CHANGE*LOG*' \
            ')' \
            -print \
            -exec git add --verbose -- '{}' ';'
          command git commit --verbose \
            --message='update changelog' ||
            exit 0
      - name: Push changes
        uses: ad-m/github-push-action@v0.8.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN || secrets.PAT }}
          branch: ${{ github.ref }}