name: Deploy Staging

on:
  push:
    branches: [main]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: falah-mobile
  STAGING_HOST: 192.168.0.11

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Generate Prisma client
        run: npx prisma generate

      - name: Build Next.js app
        run: npm run build
        env:
          DATABASE_URL: "file:./prisma/dev.db"

      - name: Build Docker image
        run: |
          docker build -t ${{ env.IMAGE_NAME }}:staging .
          docker save ${{ env.IMAGE_NAME }}:staging | gzip > /tmp/${{ env.IMAGE_NAME }}.tar.gz

      - name: Tag current image as rollback target
        run: |
          ssh admin@${{ env.STAGING_HOST }} "\
            docker tag ${{ env.IMAGE_NAME }}:staging ${{ env.IMAGE_NAME }}:rollback 2>/dev/null; \
            echo 'Rollback tag created'"
        continue-on-error: true
        env:
          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}

      - name: Deploy to staging
        id: deploy
        run: |
          scp /tmp/${{ env.IMAGE_NAME }}.tar.gz admin@${{ env.STAGING_HOST }}:/tmp/
          ssh admin@${{ env.STAGING_HOST }} << 'ENDSSH'
            cd /var/services/homes/admin/falah-mobile
            docker load < /tmp/${{ env.IMAGE_NAME }}.tar.gz
            docker compose -f docker-compose.staging.yml down
            docker compose -f docker-compose.staging.yml up -d
            # Wait for healthy with timeout
            for i in $(seq 1 60); do
              sleep 2
              HEALTH=\\$(curl -sf http://localhost:4014/mobile/api/health 2>/dev/null)
              if echo \"\$HEALTH\" | grep -q '\"status\":\"ok\"'; then
                echo "✅ Staging is healthy"
                exit 0
              fi
              echo "Waiting... attempt \$i"
            done
            echo "❌ Deployment failed health check"
            exit 1
          ENDSSH
        env:
          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}

      - name: Auto-rollback on failure
        if: failure() && steps.deploy.outcome == 'failure'
        run: |
          echo "🚨 Deployment failed — initiating auto-rollback..."
          ssh admin@${{ env.STAGING_HOST }} << 'ENDSSH'
            cd /var/services/homes/admin/falah-mobile
            if docker images ${{ env.IMAGE_NAME }}:rollback --format '{{.ID}}' | head -1; then
              echo "🔄 Rolling back to previous image..."
              docker compose -f docker-compose.staging.yml down
              docker tag ${{ env.IMAGE_NAME }}:rollback ${{ env.IMAGE_NAME }}:staging
              docker compose -f docker-compose.staging.yml up -d
              for i in \$(seq 1 30); do
                sleep 2
                HEALTH=\\$(curl -sf http://localhost:4014/mobile/api/health 2>/dev/null)
                if echo \"\$HEALTH\" | grep -q '\"status\":\"ok\"'; then
                  echo "✅ Rollback successful — service healthy"
                  exit 0
                fi
              done
              echo "❌ Rollback also failed — manual intervention required"
              exit 1
            else
              echo "⚠️  No rollback image found — keeping current state"
              docker compose -f docker-compose.staging.yml up -d
            fi
          ENDSSH
        env:
          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}