name: Deploy

on:
  push:
    branches: [main, master]
  workflow_dispatch:
    inputs:
      environment:
        description: 'Environment to deploy to'
        required: true
        default: 'staging'
        type: choice
        options:
          - staging
          - production

env:
  NODE_VERSION: '20'

jobs:
  # Run CI first
  ci:
    uses: ./.github/workflows/ci.yml

  # Deploy Backend
  deploy-backend:
    name: Deploy Backend
    runs-on: ubuntu-latest
    needs: ci
    if: success()
    environment:
      name: ${{ github.event.inputs.environment || 'staging' }}
      url: ${{ vars.API_URL }}

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

      - name: Download backend artifacts
        uses: actions/download-artifact@v4
        with:
          name: backend-dist
          path: apps/backend/dist

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}

      # Docker deployment option
      - name: Build Docker image
        if: vars.DEPLOY_METHOD == 'docker'
        working-directory: apps/backend
        run: |
          docker build -t ${{ vars.DOCKER_REGISTRY }}/template-saas-backend:${{ github.sha }} .
          docker tag ${{ vars.DOCKER_REGISTRY }}/template-saas-backend:${{ github.sha }} ${{ vars.DOCKER_REGISTRY }}/template-saas-backend:latest

      - name: Push Docker image
        if: vars.DEPLOY_METHOD == 'docker'
        run: |
          echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin ${{ vars.DOCKER_REGISTRY }}
          docker push ${{ vars.DOCKER_REGISTRY }}/template-saas-backend:${{ github.sha }}
          docker push ${{ vars.DOCKER_REGISTRY }}/template-saas-backend:latest

      # Alternative: SSH deployment
      - name: Deploy via SSH
        if: vars.DEPLOY_METHOD == 'ssh'
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SSH_HOST }}
          username: ${{ secrets.SSH_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script: |
            cd ${{ vars.DEPLOY_PATH }}/backend
            git pull origin ${{ github.ref_name }}
            npm ci --production
            npm run build
            pm2 restart template-saas-api || pm2 start dist/main.js --name template-saas-api

      - name: Notify deployment success
        if: success()
        run: echo "Backend deployed successfully to ${{ github.event.inputs.environment || 'staging' }}"

  # Deploy Frontend
  deploy-frontend:
    name: Deploy Frontend
    runs-on: ubuntu-latest
    needs: ci
    if: success()
    environment:
      name: ${{ github.event.inputs.environment || 'staging' }}
      url: ${{ vars.APP_URL }}

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

      - name: Download frontend artifacts
        uses: actions/download-artifact@v4
        with:
          name: frontend-dist
          path: apps/frontend/dist

      # Vercel deployment option
      - name: Deploy to Vercel
        if: vars.DEPLOY_METHOD == 'vercel'
        uses: amondnet/vercel-action@v25
        with:
          vercel-token: ${{ secrets.VERCEL_TOKEN }}
          vercel-org-id: ${{ secrets.VERCEL_ORG_ID }}
          vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID }}
          working-directory: apps/frontend
          vercel-args: ${{ github.event.inputs.environment == 'production' && '--prod' || '' }}

      # S3/CloudFront deployment option
      - name: Deploy to S3
        if: vars.DEPLOY_METHOD == 's3'
        uses: jakejarvis/s3-sync-action@v0.5.1
        with:
          args: --acl public-read --follow-symlinks --delete
        env:
          AWS_S3_BUCKET: ${{ secrets.AWS_S3_BUCKET }}
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          AWS_REGION: ${{ vars.AWS_REGION }}
          SOURCE_DIR: apps/frontend/dist

      - name: Invalidate CloudFront
        if: vars.DEPLOY_METHOD == 's3'
        uses: chetan/invalidate-cloudfront-action@v2
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          AWS_REGION: ${{ vars.AWS_REGION }}
          DISTRIBUTION: ${{ secrets.CLOUDFRONT_DISTRIBUTION_ID }}
          PATHS: '/*'

      - name: Notify deployment success
        if: success()
        run: echo "Frontend deployed successfully to ${{ github.event.inputs.environment || 'staging' }}"

  # Database migrations
  run-migrations:
    name: Run Database Migrations
    runs-on: ubuntu-latest
    needs: [deploy-backend]
    if: success()
    environment:
      name: ${{ github.event.inputs.environment || 'staging' }}

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

      - name: Run migrations via SSH
        if: vars.DEPLOY_METHOD == 'ssh'
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SSH_HOST }}
          username: ${{ secrets.SSH_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script: |
            cd ${{ vars.DEPLOY_PATH }}/database
            ./scripts/run-migrations.sh

      - name: Notify migration success
        run: echo "Migrations completed successfully"

  # Deployment summary
  deploy-summary:
    name: Deployment Summary
    runs-on: ubuntu-latest
    needs: [deploy-backend, deploy-frontend, run-migrations]
    if: always()

    steps:
      - name: Deployment Summary
        run: |
          echo "## Deployment Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "| Component | Status |" >> $GITHUB_STEP_SUMMARY
          echo "|-----------|--------|" >> $GITHUB_STEP_SUMMARY
          echo "| Backend | ${{ needs.deploy-backend.result }} |" >> $GITHUB_STEP_SUMMARY
          echo "| Frontend | ${{ needs.deploy-frontend.result }} |" >> $GITHUB_STEP_SUMMARY
          echo "| Migrations | ${{ needs.run-migrations.result }} |" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "Environment: ${{ github.event.inputs.environment || 'staging' }}" >> $GITHUB_STEP_SUMMARY
          echo "Commit: ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY