deploy-command.yml

# Inputs:
#  client_payload.pull_request.number - PR number
#  client_payload.pull_request.head.sha - PR SHA

name: Create PR Staging Environment

on:
  repository_dispatch:
    types: [deploy-command]

env:
  DOMAIN: ${{ format('{0}-{1}-pr{2}.surge.sh', github.event.repository.owner.login, github.event.repository.name, github.event.client_payload.pull_request.number) }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Dump context
        env:
          CONTEXT: ${{ toJson(github) }}
        run: |
          echo "Context: $CONTEXT"

      - name: Checkout
        uses: actions/checkout@v2
        with:
          ref: ${{ github.event.client_payload.pull_request.head.sha }}

      - name: Install dependencies
        run: npm ci

      - name: Build static site
        run: npx gatsby build

      - name: Publish to surge.sh
        run: npx surge ./public ${{ env.DOMAIN }}
        env:
          SURGE_LOGIN: ${{ secrets.SURGE_LOGIN }}
          SURGE_TOKEN: ${{ secrets.SURGE_TOKEN }}
        
      - name: Add comment to PR
        uses: peter-evans/create-or-update-comment@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body: |
            ${{ format('Published to [staging environment](https://{0})', env.DOMAIN) }}

            To teardown, comment with the `/teardown` command.