# Gitea Actions Workflow for Next.js Blog Application
# This workflow builds a Docker image and deploys it to production
#
# Workflow triggers:
#   - Push to master branch (automatic deployment)
#   - Manual trigger via workflow_dispatch
#
# Required Secrets (configure in Gitea repository settings):
#   - PRODUCTION_HOST: IP address or hostname of production server
#   - PRODUCTION_USER: SSH username (e.g., 'deployer')
#   - SSH_PRIVATE_KEY: Private SSH key for authentication
#
# Environment Variables (configured below):
#   - REGISTRY: Docker registry URL
#   - IMAGE_NAME: Docker image name
#
# Docker Registry Configuration:
#   - Current registry (repository.workspace:5000) is INSECURE - no authentication required
#   - Registry login steps are SKIPPED to avoid 7+ minute timeout delays
#   - Docker push/pull operations work without credentials
#   - If switching to authenticated registry: uncomment login steps and configure secrets

name: Build and Deploy Next.js Blog to Production

on:
  push:
    branches:
      - master # Trigger on push to master branch
  workflow_dispatch: # Allow manual trigger from Gitea UI

env:
  # Docker registry configuration
  # Update this to match your private registry URL
  REGISTRY: repository.workspace:5000
  IMAGE_NAME: mypage

jobs:
  # ============================================
  # Job 1: Code Quality Checks (Linting)
  # ============================================
  lint:
    name: 🔍 Code Quality Checks
    runs-on: node-22
    # env:
    #   ACTIONS_RUNTIME_URL: http://192.168.1.53:3000 # Setează la nivel de job

    steps:
      - name: 🔎 Checkout code
        uses: actions/checkout@v4
        # with:
        #   github-server-url: ${{ env.ACTIONS_RUNTIME_URL }}

      # - name: 📦 Setup Node.js
      #   uses: actions/setup-node@v4
      #   with:
      #     node-version: "22"
      #     cache: "npm"

      - name: 📥 Install dependencies
        run: npm ci

      - name: 🔍 Run ESLint
        run: npm run lint
        continue-on-error: true

      - name: 💅 Check code formatting (Prettier)
        run: npm run format:check
        continue-on-error: true

      - name: 🔤 TypeScript type checking
        run: npx tsc --noEmit

      - name: ✅ All quality checks passed
        run: |
          echo "✅ All code quality checks passed successfully!"
          echo "  - ESLint: No linting errors"
          echo "  - Prettier: Code is properly formatted"
          echo "  - TypeScript: No type errors"

  # ============================================
  # Job 2: Build and Push Docker Image
  # ============================================
  build-and-push:
    name: 🏗️ Build and Push Docker Image
    runs-on: ubuntu-latest
    needs: [lint] # Wait for lint job to complete successfully

    steps:
      - name: 🔎 Checkout code
        uses: actions/checkout@v4

      - name: 📝 Create .env file from Gitea secrets
        run: |
          echo "Creating .env file for Docker build..."
          cat > .env << EOF
          # Build-time environment variables
          NEXT_PUBLIC_SITE_URL=${{ secrets.NEXT_PUBLIC_SITE_URL }}
          NODE_ENV=production
          NEXT_TELEMETRY_DISABLED=1

          # Add other build-time variables here as needed
          # NEXT_PUBLIC_GA_ID=${{ secrets.NEXT_PUBLIC_GA_ID }}
          EOF

          echo "✅ .env file created successfully"
          echo "Preview (secrets masked):"
          cat .env | sed 's/=.*/=***MASKED***/g'

      # Insecure registry configuration - no authentication required
      # The registry at repository.workspace:5000 does not require login
      # Docker push/pull operations work without credentials
      - name: ℹ️ Registry configuration (insecure - no login required)
        run: |
          echo "=== Docker Registry Configuration ==="
          echo "Registry: ${{ env.REGISTRY }}"
          echo "Type: Insecure (no authentication required)"
          echo ""
          echo "ℹ️ Skipping registry login - insecure registry allows push/pull without credentials"
          echo ""
          echo "If your registry requires authentication in the future:"
          echo "  1. Set REGISTRY_USERNAME and REGISTRY_PASSWORD secrets in Gitea"
          echo "  2. Uncomment the login step below this message"
          echo "  3. Change registry URL to authenticated registry"

      # Uncomment this step if registry requires authentication in the future
      # - name: 🔐 Log in to Docker Registry
      #   timeout-minutes: 1
      #   run: |
      #     if [ -n "${{ secrets.REGISTRY_USERNAME }}" ] && [ -n "${{ secrets.REGISTRY_PASSWORD }}" ]; then
      #       echo "Attempting login to ${{ env.REGISTRY }}..."
      #       timeout 30s bash -c 'echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login ${{ env.REGISTRY }} -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin' || {
      #         echo "⚠️ Login failed - continuing anyway"
      #       }
      #     fi

      - name: 🏗️ Build Docker image
        timeout-minutes: 30
        env:
          DOCKER_BUILDKIT: 1 # Enable BuildKit for faster builds and better caching
        run: |
          echo "Building Next.js Docker image with BuildKit..."
          echo "Build context size:"
          du -sh . 2>/dev/null || echo "Cannot measure context size"

          # Build the Docker image
          # - Uses Dockerfile.nextjs from project root
          # - Tags image with both 'latest' and commit SHA
          # - Enables inline cache for faster subsequent builds
          # -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }} ❗ do this if deploying on PR creation
          docker build \
            --progress=plain \
            --build-arg BUILDKIT_INLINE_CACHE=1 \
            -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest \
            -f Dockerfile.nextjs \
            .

          echo "✅ Build successful"
          echo "Image size:"
          docker images ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest

      - name: 🚀 Push Docker image to registry
        run: |
          echo "Pushing image to registry..."

          # Push both tags (latest and commit SHA)
          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          # docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}

          echo "✅ Image pushed successfully"
          echo "  - ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest"
          
          # Clean up sensitive files
          rm -f .env
          echo "✅ Cleaned up .env file"
          # echo "  - ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}"

  # ============================================
  # Job 2: Deploy to Production Server
  # ============================================
  deploy-production:
    name: 🚀 Deploy to Production
    runs-on: ubuntu-latest
    needs: [build-and-push] # Wait for build job to complete
    environment:
      name: production
      url: http://192.168.1.54:3030 # Update with your actual production URL

    steps:
      - name: 🔎 Checkout code (for docker-compose file)
        uses: actions/checkout@v4

      # Verify Docker is accessible on production server
      # Registry authentication is not required for insecure registry
      - name: ℹ️ Verify production server Docker access
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ vars.PRODUCTION_HOST }}
          username: ${{ vars.PRODUCTION_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          script: |
            echo "=== Verifying Docker is accessible ==="
            docker info > /dev/null 2>&1 || {
              echo "❌ Docker is not running or user has no access"
              echo "Please ensure Docker is installed and user is in docker group"
              exit 1
            }
            echo "✅ Docker is accessible"

            echo ""
            echo "=== Registry Configuration ==="
            echo "Registry: ${{ env.REGISTRY }}"
            echo "Type: Insecure (no authentication)"
            echo "ℹ️ Skipping registry login - push/pull will work without credentials"

      - name: 📁 Ensure application directory structure
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ vars.PRODUCTION_HOST }}
          username: ${{ vars.PRODUCTION_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          script: |
            echo "=== Ensuring application directory structure ==="

            # Verify base directory exists and is writable
            # Update /opt/mypage to match your deployment directory
            if [ ! -d /opt/mypage ]; then
              echo "❌ /opt/mypage does not exist!"
              echo "Please run manually on production server:"
              echo "  sudo mkdir -p /opt/mypage"
              echo "  sudo chown -R deployer:docker /opt/mypage"
              echo "  sudo chmod -R 775 /opt/mypage"
              exit 1
            fi

            if [ ! -w /opt/mypage ]; then
              echo "❌ /opt/mypage is not writable by $USER user"
              echo "Please run manually on production server:"
              echo "  sudo chown -R deployer:docker /opt/mypage"
              echo "  sudo chmod -R 775 /opt/mypage"
              exit 1
            fi

            # Create data directories for logs
            mkdir -p /opt/mypage/data/logs || { echo "❌ Failed to create logs directory"; exit 1; }

            echo "✅ Directory structure ready"
            ls -la /opt/mypage

      - name: 📦 Copy docker-compose.prod.yml to server
        uses: appleboy/scp-action@v0.1.7
        with:
          host: ${{ vars.PRODUCTION_HOST }}
          username: ${{ vars.PRODUCTION_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          source: "docker-compose.prod.yml"
          target: "/opt/mypage/"
          overwrite: true

      - name: 🐳 Deploy application via Docker Compose
        uses: appleboy/ssh-action@v1.0.3
        env:
          # Optional: only needed if registry requires authentication
          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD || '' }}
          REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME || '' }}
          REGISTRY_URL: ${{ env.REGISTRY }}
          IMAGE_FULL: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
        with:
          host: ${{ vars.PRODUCTION_HOST }}
          username: ${{ vars.PRODUCTION_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          envs: REGISTRY_PASSWORD,REGISTRY_USERNAME,REGISTRY_URL,IMAGE_FULL
          script_stop: true # Stop execution on any error
          script: |
            echo "=== Starting deployment to production server ==="
            cd /opt/mypage

            # Registry configuration - insecure registry does not require authentication
            echo "=== Registry Configuration ==="
            echo "Registry: $REGISTRY_URL"
            echo "Type: Insecure (no authentication required)"
            echo "ℹ️ Skipping registry login"
            echo ""

            # Pull latest image from registry
            echo "=== Pulling latest Docker image ==="
            docker pull "$IMAGE_FULL"

            if [ $? -ne 0 ]; then
              echo "❌ Failed to pull image, aborting deployment"
              exit 1
            fi

            # Deploy new container
            # - Stops old container
            # - Removes old container
            # - Creates and starts new container with fresh image
            echo "=== Deploying new container ==="
            docker compose -f docker-compose.prod.yml up -d --force-recreate

            if [ $? -ne 0 ]; then
              echo "❌ Failed to deploy new container"
              echo "Check logs above for errors"
              exit 1
            fi

            # Check container status
            echo "=== Container Status ==="
            docker compose -f docker-compose.prod.yml ps

            # Show recent logs for debugging
            echo "=== Recent application logs ==="
            docker compose -f docker-compose.prod.yml logs --tail=50

            # Clean up old/unused images to save disk space
            echo "=== Cleaning up old Docker images ==="
            docker image prune -f

            echo "✅ Deployment completed successfully ==="

      - name: ❤️ Health check
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ vars.PRODUCTION_HOST }}
          username: ${{ vars.PRODUCTION_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          script: |
            echo "=== Performing health check ==="
            cd /opt/mypage
            max_attempts=15
            attempt=1

            # Wait for container to be healthy (respect start_period from health check)
            echo "Waiting for application to start (40s start period)..."
            sleep 40

            # Retry health check up to 15 times
            while [ $attempt -le $max_attempts ]; do
              # Check if application responds at port 3030
              if curl -f http://localhost:3030/ > /dev/null 2>&1; then
                echo "✅ Health check passed!"
                echo "Application is healthy and responding to requests"
                exit 0
              fi
              echo "Attempt $attempt/$max_attempts: Health check failed, retrying in 5s..."
              sleep 5
              attempt=$((attempt + 1))
            done

            # Health check failed - gather diagnostic information
            echo "❌ Health check failed after $max_attempts attempts"
            echo ""
            echo "=== Container Status ==="
            docker compose -f docker-compose.prod.yml ps
            echo ""
            echo "=== Container Health ==="
            docker inspect mypage-prod --format='{{.State.Health.Status}}' 2>/dev/null || echo "No health status"
            echo ""
            echo "=== Recent Application Logs ==="
            docker compose -f docker-compose.prod.yml logs --tail=100

            exit 1

      - name: 📊 Deployment summary
        if: always() # Run even if previous steps fail
        run: |
          echo "### 🚀 Deployment Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- **Environment**: Production" >> $GITHUB_STEP_SUMMARY
          echo "- **Image**: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest" >> $GITHUB_STEP_SUMMARY
          echo "- **Commit**: \`${{ github.sha }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- **Workflow Run**: #${{ github.run_number }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Triggered By**: ${{ github.actor }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Status**: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Next Steps:**" >> $GITHUB_STEP_SUMMARY
          echo "1. Verify application is accessible at production URL" >> $GITHUB_STEP_SUMMARY
          echo "2. Check application logs for any errors" >> $GITHUB_STEP_SUMMARY
          echo "3. Monitor resource usage and performance" >> $GITHUB_STEP_SUMMARY