name: Build & Deploy

on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: docker

    steps:
      # --- Checkout ---
      - name: Checkout repo
        uses: actions/checkout@v3

      # --- Tools ---
      - name: Install tools
        run: |
          apt-get update
          apt-get install -y \
            docker.io \
            openssh-client \
            rsync

      # --- Docker registry login ---
      - name: Login to registry
        env:
          REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
          REGISTRY_PASS: ${{ secrets.REGISTRY_PASS }}
        run: |
          echo "$REGISTRY_PASS" | docker login registry.infra.mintel.me \
            -u "$REGISTRY_USER" \
            --password-stdin

      # --- Build image ---
      - name: Build image
        run: |
          echo "Starting Docker build..."
          docker build \
            --pull \
            -t registry.infra.mintel.me/mintel/mb-grid-solutions:latest .
          echo "Docker build completed successfully"
          echo "Built image:"
          docker images registry.infra.mintel.me/mintel/mb-grid-solutions:latest --format "table {{.Repository}}:{{.Tag}}\t{{.ID}}\t{{.CreatedSince}}"

      # --- Push image ---
      - name: Push image
        run: |
          echo "Starting Docker push..."
          docker push registry.infra.mintel.me/mintel/mb-grid-solutions:latest
          echo "Docker push completed successfully"

      # --- SSH setup ---
      - name: Setup SSH
        run: |
          mkdir -p ~/.ssh
          printf "%s\n" "${{ secrets.ALPHA_SSH_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          ssh-keyscan -H alpha.mintel.me >> ~/.ssh/known_hosts

      # --- Sync files ---
      - name: Sync files to server
        run: |
          echo "Starting file sync to server..."
          echo "Syncing docker-compose.yaml to alpha.mintel.me..."
          # Use tar to bundle files and send them via SSH in a single connection
          tar czf - docker-compose.yaml | \
          ssh -i ~/.ssh/id_ed25519 -o StrictHostKeyChecking=no -o IPQoS=0x00 deploy@alpha.mintel.me \
          "mkdir -p /home/deploy/sites/mb-grid-solutions.com/ && tar xzf - -C /home/deploy/sites/mb-grid-solutions.com/ && echo 'Files synced successfully' && ls -la /home/deploy/sites/mb-grid-solutions.com/"
          echo "File sync completed"

      # --- Deploy ---
      - name: Deploy on server
        env:
          REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
          REGISTRY_PASS: ${{ secrets.REGISTRY_PASS }}
        run: |
          echo "Starting deployment on server..."
          ssh -i ~/.ssh/id_ed25519 -o StrictHostKeyChecking=no -o IPQoS=0x00 deploy@alpha.mintel.me "
            set -e

            echo '=== Logging in to registry on server ==='
            echo '$REGISTRY_PASS' | docker login registry.infra.mintel.me -u '$REGISTRY_USER' --password-stdin
            echo 'Registry login successful'

            cd /home/deploy/sites/mb-grid-solutions.com

            echo ''
            echo '=== Checking current container status ==='
            docker compose ps app || echo 'No running containers found'

            echo ''
            echo '=== Checking current image ==='
            docker images registry.infra.mintel.me/mintel/mb-grid-solutions:latest --format 'table {{.Repository}}:{{.Tag}}\t{{.ID}}\t{{.CreatedSince}}' || echo 'No local image found'

            echo ''
            echo '=== Pulling latest image ==='
            docker compose pull app
            echo 'Image pull completed'

            echo ''
            echo '=== Checking pulled image ==='
            docker images registry.infra.mintel.me/mintel/mb-grid-solutions:latest --format 'table {{.Repository}}:{{.Tag}}\t{{.ID}}\t{{.CreatedSince}}'

            echo ''
            echo '=== Starting app container with new image (zero-downtime) ==='
            docker compose up -d --pull always --force-recreate --no-build app

            echo ''
            echo '=== Waiting for container to be healthy (10 seconds) ==='
            sleep 10

            echo ''
            echo '=== Checking container status after deployment ==='
            docker compose ps app

            echo ''
            echo '=== Checking container logs (last 30 lines) ==='
            docker compose logs --tail=30 app

            echo ''
            echo '=== Pruning old images (keep last 24h) ==='
            docker image prune -f --filter 'until=24h'

            echo ''
            echo '=== Final status check ==='
            docker compose ps app

            echo ''
            echo '=== Deployment completed successfully ==='
          "
          echo "Deployment process finished"