release.yml

name: release

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Bun version for the release (e.g. 1.3.13)"
        required: true
        type: string
  push:
    branches:
      - main
    paths:
      - ".bun-version"

jobs:
  integration_test:
    uses: ./.github/workflows/integration.yml
    secrets: inherit

  release:
    needs: integration_test
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Resolve bun version
        id: bun
        run: |
          if [ -n "${{ inputs.version }}" ]; then
            VERSION="${{ inputs.version }}"
          else
            VERSION=$(cat .bun-version)
          fi
          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
          echo "Bun version: ${VERSION}"

      - name: Compute package version
        id: pkg
        run: |
          BUN_VERSION="${{ steps.bun.outputs.version }}"
          BUN_MAJOR=$(echo "$BUN_VERSION" | cut -d. -f1)
          BUN_MINOR=$(echo "$BUN_VERSION" | cut -d. -f2)
          BUN_PATCH=$(echo "$BUN_VERSION" | cut -d. -f3)

          # Package version: 2.<bun_major*100+bun_minor>.<bun_patch>
          PKG_MINOR=$((BUN_MAJOR * 100 + BUN_MINOR))
          PKG_VERSION="2.${PKG_MINOR}.${BUN_PATCH}"

          echo "version=${PKG_VERSION}" >> "$GITHUB_OUTPUT"
          echo "Package version: ${PKG_VERSION} (from Bun v${BUN_VERSION})"

      - name: Check if version already released
        id: check
        run: |
          TAG="v${{ steps.pkg.outputs.version }}"
          if git rev-parse "$TAG" >/dev/null 2>&1; then
            echo "::warning::Tag ${TAG} already exists. Skipping release."
            echo "skip=true" >> "$GITHUB_OUTPUT"
          else
            echo "skip=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Setup Bun
        if: steps.check.outputs.skip == 'false'
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        if: steps.check.outputs.skip == 'false'
        run: bun install --frozen-lockfile

      - name: Setup Node.js
        if: steps.check.outputs.skip == 'false'
        uses: actions/setup-node@v6
        with:
          node-version: "24"
          registry-url: "https://registry.npmjs.org"
          package-manager-cache: false

      - name: Build
        if: steps.check.outputs.skip == 'false'
        run: |
          bun command/buildLayer.ts
          bunx projen build
        env:
          BUN_VERSION: ${{ steps.bun.outputs.version }}

      - name: Set package version and package
        if: steps.check.outputs.skip == 'false'
        run: |
          node -e "
            const pkg = require('./package.json');
            pkg.version = '${{ steps.pkg.outputs.version }}';
            require('fs').writeFileSync('package.json', JSON.stringify(pkg, null, 2) + '\n');
          "
          bunx projen package:js

      - name: Verify layer zip exists
        if: steps.check.outputs.skip == 'false'
        run: |
          ZIP_FILE="lib/bun-lambda-layer-${{ steps.bun.outputs.version }}.zip"
          if [ ! -f "$ZIP_FILE" ]; then
            echo "::error::Layer zip not found: ${ZIP_FILE}"
            exit 1
          fi

      - name: Create GitHub Release
        if: steps.check.outputs.skip == 'false'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: "v${{ steps.pkg.outputs.version }}"
          name: "v${{ steps.pkg.outputs.version }}"
          body: |
            ## Lambda Bun Runtime v${{ steps.pkg.outputs.version }}

            Built with Bun v${{ steps.bun.outputs.version }}

            ### Versioning
            Package version `2.X.Y` maps to Bun version where `X = bun_major*100 + bun_minor` and `Y = bun_patch`.

            ### Assets
            - `bun-lambda-layer-${{ steps.bun.outputs.version }}.zip` — Prebuilt Lambda layer (Linux ARM64)
          files: "lib/bun-lambda-layer-${{ steps.bun.outputs.version }}.zip"
          fail_on_unmatched_files: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Publish to npm
        if: steps.check.outputs.skip == 'false'
        run: npm publish dist/js/*.tgz --provenance --access public