name: Publish

on:
  push:
    tags:
      - 'v*'

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      # contents: write for the auto-generated GitHub release; id-token for
      # trusted publishing (OIDC) — npm authenticates the workflow itself,
      # no NPM_TOKEN secret, no long-lived token, no 2FA prompt.
      contents: write
      id-token: write
    steps:
      - uses: actions/checkout@v4

      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: pnpm
          registry-url: https://registry.npmjs.org

      # OIDC trusted publishing needs npm >= 11.5.1; the bundled npm on
      # node 22 predates it and would PUT without credentials (registry
      # answers 404 to hide the package's existence).
      - name: Upgrade npm
        run: npm install -g npm@latest

      - name: Install
        run: pnpm install --ignore-scripts --frozen-lockfile

      - name: Verify tag matches package version
        run: |
          PKG_VERSION=$(node -p "require('./package.json').version")
          if [ "v$PKG_VERSION" != "$GITHUB_REF_NAME" ]; then
            echo "::error::tag $GITHUB_REF_NAME does not match package.json version v$PKG_VERSION — bump with 'npm version <level>' before tagging"
            exit 1
          fi

      - name: Build
        run: pnpm build

      - name: Typecheck
        run: pnpm typecheck

      - name: Lint
        run: pnpm lint

      - name: Test
        run: pnpm test

      - name: Publish
        run: npm publish --access public

      - name: Create GitHub release
        run: |
          if gh release view "$GITHUB_REF_NAME" > /dev/null 2>&1; then
            echo "Release $GITHUB_REF_NAME already exists — skipping creation"
          else
            gh release create "$GITHUB_REF_NAME" --verify-tag --generate-notes
          fi
        env:
          GH_TOKEN: ${{ github.token }}