# LocalGreenChain Production Deployment
# Agent 4: Production Deployment
#
# Deploys to production when a release is published
# or manually triggered

name: Deploy Production

on:
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment environment'
        required: true
        default: 'production'
        type: choice
        options:
          - production
          - staging

concurrency:
  group: deploy-${{ github.event.inputs.environment || 'production' }}
  cancel-in-progress: false

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  # ==========================================================================
  # Build and Push Docker Image
  # ==========================================================================
  build:
    name: Build & Push Image
    runs-on: ubuntu-latest
    timeout-minutes: 20
    permissions:
      contents: read
      packages: write

    outputs:
      image_tag: ${{ steps.meta.outputs.tags }}
      image_digest: ${{ steps.build.outputs.digest }}

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

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      - name: Build and push
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            NEXT_PUBLIC_API_URL=${{ vars.API_URL }}
            NEXT_PUBLIC_SENTRY_DSN=${{ vars.SENTRY_DSN }}

  # ==========================================================================
  # Deploy to Production
  # ==========================================================================
  deploy:
    name: Deploy
    runs-on: ubuntu-latest
    timeout-minutes: 15
    needs: [build]
    environment:
      name: ${{ github.event.inputs.environment || 'production' }}
      url: ${{ vars.APP_URL }}

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

      - name: Deploy notification (start)
        run: |
          echo "🚀 Starting deployment to ${{ github.event.inputs.environment || 'production' }}"
          echo "Image: ${{ needs.build.outputs.image_tag }}"

      # Add your deployment steps here
      # Examples:
      # - SSH and docker-compose pull/up
      # - Kubernetes deployment
      # - Cloud provider specific deployment

      - name: Deploy notification (complete)
        run: |
          echo "✅ Deployment completed successfully"

  # ==========================================================================
  # Post-Deployment Verification
  # ==========================================================================
  verify:
    name: Verify Deployment
    runs-on: ubuntu-latest
    timeout-minutes: 10
    needs: [deploy]

    steps:
      - name: Wait for deployment to stabilize
        run: sleep 30

      - name: Health check
        run: |
          for i in {1..5}; do
            status=$(curl -s -o /dev/null -w "%{http_code}" ${{ vars.APP_URL }}/api/health || echo "000")
            if [ "$status" = "200" ]; then
              echo "✅ Health check passed"
              exit 0
            fi
            echo "Attempt $i: Status $status, retrying..."
            sleep 10
          done
          echo "❌ Health check failed after 5 attempts"
          exit 1

      - name: Smoke tests
        run: |
          # Verify critical endpoints
          curl -f ${{ vars.APP_URL }}/api/health/live || exit 1
          curl -f ${{ vars.APP_URL }}/api/health/ready || exit 1
          echo "✅ Smoke tests passed"

  # ==========================================================================
  # Rollback on Failure
  # ==========================================================================
  rollback:
    name: Rollback
    runs-on: ubuntu-latest
    needs: [verify]
    if: failure()

    steps:
      - name: Rollback notification
        run: |
          echo "⚠️ Deployment verification failed, initiating rollback..."
          # Add rollback logic here

      - name: Alert team
        run: |
          echo "🔔 Deployment failed - team has been notified"