name: Deploy to Production

on:
  workflow_dispatch:
    inputs:
      image_tag:
        description: "Docker image tag to deploy (commit SHA or version tag, e.g. v1.0.0)"
        required: true
        default: "latest"
        type: string

env:
  FRONTEND_IMAGE: git.koppkb.com/kopkb/my-kopkb-fe
  DEPLOY_DIR: /home/arrahn/Project

jobs:
  deploy:
    runs-on: mykopkb-production

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.image_tag }}

      - name: Login to Docker registry
        run: |
          echo "${{ secrets.REGISTRY_PASSWORD }}" | \
            docker login git.koppkb.com \
              -u "${{ secrets.REGISTRY_USERNAME }}" \
              --password-stdin

      - name: Verify image exists in registry
        run: |
          set -e
          IMAGE_TAG="${{ inputs.image_tag }}"
          IMAGE="${FRONTEND_IMAGE}:${IMAGE_TAG}"

          echo "Checking if image exists: ${IMAGE}"
          if ! docker manifest inspect "${IMAGE}" > /dev/null 2>&1; then
            echo "ERROR: Image ${IMAGE} does not exist in registry!"
            exit 1
          fi
          echo "✓ ${IMAGE} found"

      - name: Pull Docker image
        run: |
          set -e
          IMAGE_TAG="${{ inputs.image_tag }}"
          docker pull "${FRONTEND_IMAGE}:${IMAGE_TAG}"
          echo "✓ Image pulled successfully"

      - name: Sync compose file and deploy
        run: |
          set -e
          IMAGE_TAG="${{ inputs.image_tag }}"

          mkdir -p "${DEPLOY_DIR}"
          cp docker/docker-compose.production.yml "${DEPLOY_DIR}/docker-compose.frontend.yml"

          docker network inspect mykopkb-production-network >/dev/null 2>&1 \
            || docker network create mykopkb-production-network

          cd "${DEPLOY_DIR}"

          export IMAGE_TAG

          docker rm -f mykopkb-fe-production || true
          docker compose -f docker-compose.frontend.yml -p mykopkb-fe pull
          docker compose -f docker-compose.frontend.yml -p mykopkb-fe up -d

          echo "✓ Deployed frontend IMAGE_TAG=${IMAGE_TAG}"

      - name: Verify deployment
        run: |
          set -e
          cd "${DEPLOY_DIR}"

          echo "Waiting for the frontend to start..."
          sleep 10

          STATUS=$(docker compose -f docker-compose.frontend.yml -p mykopkb-fe ps --status running --format '{{.Name}}' frontend 2>/dev/null || true)
          if [ -z "$STATUS" ]; then
            echo "ERROR: frontend is not running"
            docker compose -f docker-compose.frontend.yml -p mykopkb-fe ps
            docker compose -f docker-compose.frontend.yml -p mykopkb-fe logs --tail=50 frontend || true
            exit 1
          fi
          echo "✓ frontend is running (${STATUS})"

          FE_PORT=$(grep -E '^FE_PORT=' .env 2>/dev/null | cut -d= -f2- | tr -d '"' || true)
          FE_PORT=${FE_PORT:-8081}

          for i in 1 2 3 4 5 6; do
            if curl -sf "http://127.0.0.1:${FE_PORT}/health" > /dev/null; then
              echo "✓ frontend health check passed (http://127.0.0.1:${FE_PORT}/health)"
              exit 0
            fi
            echo "Waiting for frontend... attempt ${i}/6"
            sleep 5
          done

          echo "ERROR: frontend health check failed (http://127.0.0.1:${FE_PORT}/health)"
          docker compose -f docker-compose.frontend.yml -p mykopkb-fe logs --tail=50 frontend || true
          exit 1