main.yml

name: Gatsby Publish

env:
  DELTA_THRESHOLD: .90

on:
  push:
    branches:
      - main
    

jobs:
  publish-smoke-test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3.5.3
      - uses: enriikke/gatsby-gh-pages-action@v2
        env:
          GH_API_KEY: ${{ secrets.GITHUB_TOKEN }}
        with:
          access-token: ${{ secrets.demo }}
          deploy-branch: smoke-test
  verify-smoke-test:
    runs-on: ubuntu-latest
    needs: publish-smoke-test
    steps:
      - name: Checkout Smoke Test Branch
        uses: actions/checkout@v3.5.3
        with:
          path: smoke-test
          ref: smoke-test
      - name: Calculate total lines in smoke-test branch
        run: |
          export ST_LC=$(find ./smoke-test -type f -print0 | wc -l --files0=- | tail -n 1 | cut -d ' ' -f 1)
          echo $ST_LC
          echo "SMOKE_TEST_LINE_COUNT=$ST_LC" >> $GITHUB_ENV
      - name: Checkout Published Branch
        uses: actions/checkout@v3.5.3
        with:
          path: published
          ref: gh-pages
      - name: Calculate total lines in published branch
        run: |
          export PUB_LC=$(find ./published -type f -print0 | wc -l --files0=- | tail -n 1 | cut -d ' ' -f 1)
          echo $PUB_LC
          echo "PUBLISHED_LINE_COUNT=$PUB_LC" >> $GITHUB_ENV
      - name: Generate percentile diff
        run: |
          export PERCENTILE_DIFF=$(bc<<<"scale=2;${{ env.SMOKE_TEST_LINE_COUNT}} / ${{ env.PUBLISHED_LINE_COUNT }}")
          echo $PERCENTILE_DIFF
          if [ 1 -eq $(bc<<<"$PERCENTILE_DIFF < ${{ env.DELTA_THRESHOLD }}") ]; then
            exit 1
          else
            exit 0
          fi

  publish-live:
    needs: verify-smoke-test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3.5.3
        with:
          ref: gh-pages
      - name: merge commit push
        env:
          GITHUB_TOKEN: ${{ secrets.demo }}
        run: |
          git config --global user.name 'Gatsby Publish Workflow'
          git config --global user.email 'gatsby-publish-workflow@users.noreply.github.com'
          git fetch --all
          git reset --hard origin/smoke-test
          git push -f origin gh-pages