name: Release

on:
  push:
    tags:
      - "v*.*.*"

permissions:
  contents: write
  id-token: write

jobs:
  release:
    name: Publish release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Setup Node
        uses: actions/setup-node@v6
        with:
          node-version: "24"
          registry-url: "https://registry.npmjs.org"

      - name: Verify tag matches package.json version
        run: |
          tag="${GITHUB_REF_NAME#v}"
          pkg=$(node -p "require('./package.json').version")
          if [ "$tag" != "$pkg" ]; then
            echo "Tag v$tag does not match package.json version $pkg" >&2
            exit 1
          fi

      - name: Install dev deps
        run: bun install --frozen-lockfile || bun install

      - name: Type-check
        run: bunx tsc --noEmit

      - name: Type-check tests
        run: bunx tsc --noEmit --project tsconfig.tests.json

      - name: Syntax check (no bundle)
        run: bun build --target=node --no-bundle src/index.ts > /dev/null

      - name: Run tests
        run: bun test

      - name: Pack tarball
        id: pack
        run: |
          file=$(npm pack --silent)
          echo "file=$file" >> "$GITHUB_OUTPUT"
          echo "Packed $file"
          tar -tzf "$file"

      - name: Generate changelog
        id: changelog
        run: |
          tag="$GITHUB_REF_NAME"
          prev=$(git tag --sort=-creatordate | grep -v "^${tag}$" | head -n1 || true)
          {
            echo "## ${tag}"
            echo
            if [ -n "$prev" ]; then
              echo "Changes since \`${prev}\`:"
              echo
              git log --no-merges --pretty=format:'- %s (%h)' "${prev}..${tag}"
              echo
              echo
              echo "**Full diff:** https://github.com/${GITHUB_REPOSITORY}/compare/${prev}...${tag}"
            else
              echo "Initial release."
              echo
              git log --no-merges --pretty=format:'- %s (%h)' "${tag}"
            fi
          } > CHANGELOG_RELEASE.md
          cat CHANGELOG_RELEASE.md

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v3
        with:
          name: ${{ github.ref_name }}
          body_path: CHANGELOG_RELEASE.md
          draft: false
          prerelease: ${{ contains(github.ref_name, '-') }}
          files: ${{ steps.pack.outputs.file }}

      - name: Publish to npm
        if: ${{ env.NPM_TOKEN != '' }}
        env:
          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
        run: npm publish --provenance --access public