publish.yml

name: Publish to npm

on:
  release:
    types: [published]
  workflow_dispatch:

permissions:
  contents: read

jobs:
  publish:
    runs-on: ubuntu-latest
    # Publish only for released tags or manual dispatches.
    if: github.event_name == 'release' || github.event_name == 'workflow_dispatch'

    steps:
      - uses: actions/checkout@v4

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

      - name: Install dependencies
        run: npm ci

      - name: Validate version alignment
        run: |
          PACKAGE_VERSION=$(node -p "require('./package.json').version")
          SERVER_VERSION=$(node -p "require('./server.json').version")
          CONFIG_VERSION=$(node -e "const fs=require('fs'); const s=fs.readFileSync('./src/config.ts','utf8'); const m=s.match(/export const SERVER_VERSION = \"([^\"]+)\";/); if(!m){process.exit(1)}; console.log(m[1]);")

          echo "package.json version: ${PACKAGE_VERSION}"
          echo "server.json version: ${SERVER_VERSION}"
          echo "src/config.ts version: ${CONFIG_VERSION}"

          if [ "${PACKAGE_VERSION}" != "${SERVER_VERSION}" ] || [ "${PACKAGE_VERSION}" != "${CONFIG_VERSION}" ]; then
            echo "Version mismatch detected. Ensure package.json, server.json, and src/config.ts are identical."
            exit 1
          fi

      - name: Validate release tag matches package version
        if: github.event_name == 'release'
        run: |
          PACKAGE_VERSION=$(node -p "require('./package.json').version")
          RELEASE_TAG="${{ github.event.release.tag_name }}"
          EXPECTED_TAG="v${PACKAGE_VERSION}"

          echo "release tag: ${RELEASE_TAG}"
          echo "expected tag: ${EXPECTED_TAG}"

          if [ "${RELEASE_TAG}" != "${EXPECTED_TAG}" ]; then
            echo "Release tag does not match package version."
            exit 1
          fi

      - name: Check if version already exists on npm
        id: npm_check
        run: |
          PACKAGE_NAME=$(node -p "require('./package.json').name")
          PACKAGE_VERSION=$(node -p "require('./package.json').version")

          if npm view "${PACKAGE_NAME}@${PACKAGE_VERSION}" version >/dev/null 2>&1; then
            echo "already_published=true" >> "$GITHUB_OUTPUT"
            echo "Version ${PACKAGE_VERSION} is already published. Skipping publish."
          else
            echo "already_published=false" >> "$GITHUB_OUTPUT"
            echo "Version ${PACKAGE_VERSION} is not published yet."
          fi

      - name: Build
        run: npm run build

      - name: Test
        run: npm test

      - name: Publish to npm
        if: steps.npm_check.outputs.already_published == 'false'
        run: npm publish --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}