name: Docs Deploy

on:
  push:
    branches:
      - dev
      - staging
      - main

jobs:
  build-and-deploy:
    name: Build and deploy docs-site
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@f43a3398dc5d8737c2dbc7bf8ad6b50918d7a3d4

      - name: Resolve environment
        id: env
        run: |
          case "$GITHUB_REF_NAME" in
            dev)
              target_env="dev"
              docs_url="https://dev.docs.blackroad.systems"
              ;;
            staging)
              target_env="staging"
              docs_url="https://staging.docs.blackroad.systems"
              ;;
            main)
              target_env="prod"
              docs_url="https://docs.blackroad.systems"
              ;;
            *)
              echo "Branch $GITHUB_REF_NAME is not mapped to a Railway environment" >&2
              exit 1
              ;;
          esac

          echo "env_name=$target_env" >> "$GITHUB_OUTPUT"
          echo "docs_url=$docs_url" >> "$GITHUB_OUTPUT"

      - name: Setup Node.js
        uses: actions/setup-node@b829d2ab59ffb3738572edf3c6dbd9bfebc477f1
        with:
          node-version: '18'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Build docs
        env:
          NODE_ENV: production
          PUBLIC_DOCS_URL: ${{ steps.env.outputs.docs_url }}
        run: npm run build

      - name: Install Railway CLI
        run: npm install -g @railway/cli

      - name: Deploy to Railway
        env:
          RAILWAY_TOKEN: ${{ secrets.RAILWAY_TOKEN }}
        run: railway up --service docs-site --environment ${{ steps.env.outputs.env_name }} --ci

      - name: Smoke check
        run: |
          url="${{ steps.env.outputs.docs_url }}/health"
          echo "Pinging $url"
          curl -fL "$url"