release.yml

name: Release

on:
  push:
    branches:
      - master
  workflow_dispatch:

permissions:
  contents: write
  id-token: write

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "22"
          registry-url: "https://registry.npmjs.org"

      - name: Install dependencies
        run: npm install

      - name: Determine release state
        id: determine
        run: |
          set -euo pipefail
          CURRENT_VERSION=$(node -p "require('./package.json').version")
          echo "current_version=$CURRENT_VERSION" >> "$GITHUB_OUTPUT"
          if git rev-parse HEAD^ >/dev/null 2>&1; then
            PREVIOUS_VERSION=$(node -e "const { execSync } = require('node:child_process'); try { const data = execSync('git show HEAD^:package.json', { stdio: ['ignore', 'pipe', 'ignore'] }); const json = JSON.parse(data.toString()); if (json && typeof json.version === 'string') { process.stdout.write(json.version); } } catch (error) {}")
            PREVIOUS_VERSION=${PREVIOUS_VERSION//$'\n'/}
          else
            PREVIOUS_VERSION=""
          fi
          echo "previous_version=$PREVIOUS_VERSION" >> "$GITHUB_OUTPUT"
          if [ "$CURRENT_VERSION" = "$PREVIOUS_VERSION" ]; then
            echo "changed=false" >> "$GITHUB_OUTPUT"
          else
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi
          git fetch --tags --force
          if git tag -l "v$CURRENT_VERSION" | grep -q "v$CURRENT_VERSION"; then
            echo "tag_exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "tag_exists=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Generate release notes
        if: steps.determine.outputs.changed == 'true' && steps.determine.outputs.tag_exists == 'false'
        id: release_notes
        run: |
          set -euo pipefail
          CURRENT_VERSION="${{ steps.determine.outputs.current_version }}"
          PREVIOUS_VERSION="${{ steps.determine.outputs.previous_version }}"
          RANGE=""
          COMPARE_URL=""
          LAST_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || true)
          if [ -z "$LAST_TAG" ] && [ -n "$PREVIOUS_VERSION" ] && git rev-parse "refs/tags/v${PREVIOUS_VERSION}" >/dev/null 2>&1; then
            LAST_TAG="v${PREVIOUS_VERSION}"
          fi
          if [ -n "$LAST_TAG" ]; then
            RANGE="${LAST_TAG}..HEAD"
            COMPARE_URL="https://github.com/${GITHUB_REPOSITORY}/compare/${LAST_TAG}...v${CURRENT_VERSION}"
          fi
          if [ -n "$RANGE" ]; then
            CHANGELOG=$(git log --no-merges --pretty=format:'- %s (%h)' "$RANGE")
          else
            CHANGELOG=$(git log --no-merges --pretty=format:'- %s (%h)')
          fi
          if [ -z "$CHANGELOG" ]; then
            CHANGELOG="- No commits found for this release."
          fi
          BODY_FILE=$(mktemp)
          {
            echo "## Release v${CURRENT_VERSION}"
            echo ""
            if [ -n "$COMPARE_URL" ]; then
              echo "Compare changes: $COMPARE_URL"
              echo ""
            fi
            printf "%s\n" "$CHANGELOG"
          } >"$BODY_FILE"
          cat "$BODY_FILE"
          {
            echo "body<<EOF"
            cat "$BODY_FILE"
            echo "EOF"
          } >>"$GITHUB_OUTPUT"

      - name: Create GitHub release
        if: steps.determine.outputs.changed == 'true' && steps.determine.outputs.tag_exists == 'false'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ steps.determine.outputs.current_version }}
          name: v${{ steps.determine.outputs.current_version }}
          body: ${{ steps.release_notes.outputs.body }}

      - name: Publish to npm
        if: steps.determine.outputs.changed == 'true' && steps.determine.outputs.tag_exists == 'false'
        run: npm publish --access public