build.yml

# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".

name: build
on:
  pull_request: {}
  workflow_dispatch: {}
jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    outputs:
      self_mutation_happened: ${{ steps.self_mutation.outputs.self_mutation_happened }}
    env:
      CI: "true"
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20.x
      - name: Install dependencies
        run: npm install
      - name: build
        run: npx projen build
      - name: Find mutations
        id: self_mutation
        run: |-
          git add .
          git diff --staged --patch --exit-code > .repo.patch || echo "self_mutation_happened=true" >> $GITHUB_OUTPUT
        working-directory: ./
      - name: Upload patch
        if: steps.self_mutation.outputs.self_mutation_happened
        uses: actions/upload-artifact@v4
        with:
          name: .repo.patch
          path: .repo.patch
          overwrite: true
      - name: Fail build on mutation
        if: steps.self_mutation.outputs.self_mutation_happened
        run: |-
          echo "::error::Files were changed during build (see build log). If this was triggered from a fork, you will need to update your branch."
          cat .repo.patch
          exit 1
      - name: Backup artifact permissions
        run: cd dist && getfacl -R . > permissions-backup.acl
        continue-on-error: true
      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: build-artifact
          path: dist
          overwrite: true
  self-mutation:
    needs: build
    runs-on: ubuntu-latest
    permissions:
      contents: write
    if: always() && needs.build.outputs.self_mutation_happened && !(github.event.pull_request.head.repo.full_name != github.repository)
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
      - name: Download patch
        uses: actions/download-artifact@v4
        with:
          name: .repo.patch
          path: ${{ runner.temp }}
      - name: Apply patch
        run: '[ -s ${{ runner.temp }}/.repo.patch ] && git apply ${{ runner.temp }}/.repo.patch || echo "Empty patch. Skipping."'
      - name: Set git identity
        run: |-
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"
      - name: Push changes
        env:
          PULL_REQUEST_REF: ${{ github.event.pull_request.head.ref }}
        run: |-
          git add .
          git commit -s -m "chore: self mutation"
          git push origin HEAD:$PULL_REQUEST_REF
  package-js:
    needs: build
    runs-on: ubuntu-latest
    permissions: {}
    if: "! needs.build.outputs.self_mutation_happened"
    steps:
      - uses: actions/setup-node@v4
        with:
          node-version: 20.x
      - name: Download build artifacts
        uses: actions/download-artifact@v4
        with:
          name: build-artifact
          path: dist
      - name: Restore build artifact permissions
        run: cd dist && setfacl --restore=permissions-backup.acl
        continue-on-error: true
      - name: Prepare Repository
        run: mv dist .repo
      - name: Install Dependencies
        run: cd .repo && npm ci
      - name: Create js artifact
        run: cd .repo && npx projen package:js
      - name: Collect js Artifact
        run: mv .repo/dist dist