# Forgejo Actions Workflow for Hugo Blog Auto-Deployment                                                                                                            
#                                                                                                                                                                   
# This workflow automatically builds and deploys your Hugo site when you push to main                                                                               
                                                                                                                                                                    
name: Build and Deploy Hugo Site                                                                                                                                    
                                                                                                                                                                    
on:                                                                                                                                                                 
  push:                                                                                                                                                             
    branches:
      - main
  workflow_dispatch:  # Allow manual triggering

jobs:
  deploy:
    runs-on: docker

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive  # Required for Hugo themes
          fetch-depth: 0         # Fetch full history for .GitInfo and .Lastmod

      - name: Generate timestamp
        id: timestamp
        run: echo "BUILD_TIME=$(date +%Y%m%d-%H%M%S)" >> $GITHUB_OUTPUT

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.24'
          cache: true

      - name: Install Hugo
        run: |
          go install -tags extended github.com/gohugoio/hugo@latest
          echo "$(go env GOPATH)/bin" >> $GITHUB_PATH

      - name: Verify Hugo installation
        run: hugo version

      - name: Build Hugo site
        run: hugo --minify

      - name: Set up SSH
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/deploy_key
          chmod 600 ~/.ssh/deploy_key
          echo "${{ vars.SSH_KNOWN_HOSTS }}" > ~/.ssh/known_hosts

      - name: Create deployment directory 
        env:
          SSH_HOST: ${{ vars.SSH_HOST }}
          SSH_USER: ${{ vars.SSH_USER }}
          SSH_PORT: ${{ vars.SSH_PORT }}
          DEPLOY_PATH: ${{ vars.DEPLOY_PATH }}
          BUILD_TIME: ${{ steps.timestamp.outputs.BUILD_TIME }}
        run: |
          ssh -i ~/.ssh/deploy_key -p ${SSH_PORT} ${SSH_USER}@${SSH_HOST} \
            "mkdir -p ${DEPLOY_PATH}-${BUILD_TIME}"

      - name: Deploy via SCP
        env:
          SSH_HOST: ${{ vars.SSH_HOST }}
          SSH_USER: ${{ vars.SSH_USER }}
          SSH_PORT: ${{ vars.SSH_PORT }}
          DEPLOY_PATH: ${{ vars.DEPLOY_PATH }}
          BUILD_TIME: ${{ steps.timestamp.outputs.BUILD_TIME }}
        run: |
          scp -i ~/.ssh/deploy_key -P ${SSH_PORT} -r public/* \
            ${SSH_USER}@${SSH_HOST}:${DEPLOY_PATH}-${BUILD_TIME}/


      - name: Update symlink
        env:
          SSH_HOST: ${{ vars.SSH_HOST }}
          SSH_USER: ${{ vars.SSH_USER }}
          SSH_PORT: ${{ vars.SSH_PORT }}
          DEPLOY_PATH: ${{ vars.DEPLOY_PATH }}
          BUILD_TIME: ${{ steps.timestamp.outputs.BUILD_TIME }}
        run: |
          ssh -i ~/.ssh/deploy_key -p ${SSH_PORT} ${SSH_USER}@${SSH_HOST} \
            "ln -sfn ${DEPLOY_PATH}-${BUILD_TIME} ${DEPLOY_PATH}"

      - name: Clean up old deployments
        env:
          SSH_HOST: ${{ vars.SSH_HOST }}
          SSH_USER: ${{ vars.SSH_USER }}
          SSH_PORT: ${{ vars.SSH_PORT }}
          DEPLOY_PATH: ${{ vars.DEPLOY_PATH }}
        run: |
          ssh -i ~/.ssh/deploy_key -p ${SSH_PORT} ${SSH_USER}@${SSH_HOST} \
            "cd $(dirname ${DEPLOY_PATH}) && ls -dt public-* | tail -n +6 | xargs rm -rf"
        continue-on-error: true  # Don't fail if cleanup fails

      - name: Deployment summary
        run: |
          echo "✅ Hugo site deployed successfully!"
          echo "Build time: ${{ steps.timestamp.outputs.BUILD_TIME }}"
          echo "Deployed to: ${{ vars.SSH_HOST }}"