name: Publish Blog

on: push

jobs:
  deploy:

    runs-on: ubuntu-22.04

    steps:

      # CHEKCOUT REPOSITORY

      - name: Git checkout
        uses: actions/checkout@v3

      # SETUP HUGO

      # Read environemnt variable for subsequent actions.
      # See: https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-environment-variable 
      - name: Read .env
        run: |
          . ./.env
          echo "HUGO_VERSION=${HUGO_VERSION}" >> $GITHUB_ENV          

      - name: Setup Hugo
        uses: peaceiris/actions-hugo@v2
        with:
          hugo-version: '${{ env.HUGO_VERSION }}'
          extended: true

      - name: Cache Hugo
        uses: actions/cache@v3
        with:
          path: /tmp/hugo_cache
          key: ${{ runner.os }}-hugomod-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-hugomod-            

      - name: Build Blog
        env:
          TZ: 'Europe/Rome'
        run: hugo --minify

      # DEPLOY TO REMOTE SERVER

      - name: Install SSH Key
        uses: shimataro/ssh-key-action@v2
        with:
          key: ${{ secrets.PRIVATE_SSH_KEY }} 
          known_hosts: 'placeholder'

      - name: Adding Known Hosts
        run: ssh-keyscan -H ${{ secrets.DEPLOY_HOST_IP }} >> ~/.ssh/known_hosts

      - name: Deploy with rsync
        run: rsync -avz --delete ./public/ ${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST_IP }}:${{ secrets.DEPLOY_PATH }}