# `dist/index.js` is a special file in Actions.
# When you reference an action with `uses:` in a workflow,
# `index.js` is the code that will run.
# For our project, we generate this file using `ncc`
# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
name: Check distributables

on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
  pull_request:
    paths-ignore:
      - '**.md'
  workflow_dispatch:

jobs:
  check-dist:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      # check the node version from the .node-version file
      - name: fetch node version
        id: node-version
        run: |
          version=$(cat .node-version)
          echo "version=${version}" >> $GITHUB_OUTPUT

      - name: setup node
        uses: actions/setup-node@v3
        with:
          node-version: ${{ steps.node-version.outputs.version }}
          cache: npm

      - name: install dependencies
        run: npm ci

      - name: rebuild the dist/ directory
        run: npm run prepare

      - name: compare the expected and actual dist/ directories
        id: diff
        run: |
          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
            echo "Detected uncommitted changes after build in dist folder. See status below:"
            git diff
            exit 1
          fi

      # If index.js was different than expected, upload the expected version as an artifact
      - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # pin@v3.1.2
        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
        with:
          name: dist
          path: dist/