name: Build and Deploy Backend

on:
  push:
    branches:
      - dev
    paths:
      - "Backend/**"
      - ".forgejo/workflows/deploy-backend.yaml"
  workflow_dispatch:

env:
  REGISTRY: ${{ vars.CONTAINER_REGISTRY }}
  REGISTRY_USERNAME: ${{ vars.CONTAINER_REGISTRY_USERNAME }}
  REGISTRY_PASSWORD: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }}

  # Docker Image
  BACKEND_IMAGE_NAME: chamomind/elearning-backend
  IMAGE_TAG: ${{ github.sha }}

  # Notifications
  DISCORD_WEBHOOK_URL: ${{ vars.DISCORD_WEBHOOK_URL }}

jobs:
  build:
    name: Build Backend Docker Image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY_URL }}
          username: ${{ env.REGISTRY_USERNAME }}
          password: ${{ env.REGISTRY_PASSWORD }}

      - name: Build Docker image (no buildx)
        run: |
          # Build using standard docker build (not buildx)
          cd ${{ github.workspace }}
          docker build \
            --no-cache \
            --pull \
            --file ./Backend/Dockerfile \
            --tag ${{ env.REGISTRY_URL }}/${{ env.BACKEND_IMAGE_NAME }}:${{ env.IMAGE_TAG }} \
            --tag ${{ env.REGISTRY_URL }}/${{ env.BACKEND_IMAGE_NAME }}:latest \
            .

          echo "✅ Build successful!"
          docker images | grep ${{ env.BACKEND_IMAGE_NAME }}

      - name: Push Docker image
        run: |
          docker push ${{ env.REGISTRY_URL }}/${{ env.BACKEND_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
          docker push ${{ env.REGISTRY_URL }}/${{ env.BACKEND_IMAGE_NAME }}:latest
          echo "✅ Image pushed to registry"

      - name: Test image can run
        run: |
          # Quick test that image can start
          docker run --rm ${{ env.REGISTRY_URL }}/${{ env.BACKEND_IMAGE_NAME }}:${{ env.IMAGE_TAG }} node --version

  # build:
  #   name: Build Backend Docker Image
  #   runs-on: ubuntu-latest
  #   steps:
  #     - name: Checkout code
  #       uses: actions/checkout@v4

  #     - name: Login to Docker Registry
  #       uses: docker/login-action@v3
  #       with:
  #         registry: ${{ env.REGISTRY }}
  #         username: ${{ env.REGISTRY_USERNAME }}
  #         password: ${{ env.REGISTRY_PASSWORD }}

  #     - name: Set up Docker Buildx
  #       uses: docker/setup-buildx-action@v3
  #       with:
  #         config-inline: |
  #           [registry."${{ env.REGISTRY }}"]
  #             http = true
  #             insecure = true

  #     - name: Extract metadata
  #       id: meta
  #       uses: docker/metadata-action@v5
  #       with:
  #         images: ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}
  #         tags: |
  #           type=ref,event=branch
  #           type=sha,prefix=
  #           type=raw,value=latest,enable=${{ github.ref == 'refs/heads/dev' }}

  #     - name: Build and push Docker image
  #       uses: docker/build-push-action@v5
  #       with:
  #         context: ./Backend
  #         file: ./Backend/Dockerfile
  #         push: true
  #         tags: ${{ steps.meta.outputs.tags }}
  #         labels: ${{ steps.meta.outputs.labels }}
  #         cache-from: type=gha
  #         cache-to: type=gha,mode=max

  deploy:
    name: Deploy E-learning Backend to Dev Server
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy backend on server
        uses: appleboy/ssh-action@v1.2.1
        with:
          host: ${{ vars.SSH_DEPLOY_HOST }}
          port: ${{ vars.SSH_DEPLOY_PORT }}
          username: ${{ secrets.SSH_DEPLOY_USER }}
          password: ${{ secrets.SSH_DEPLOY_PASSWORD }}
          script: |
            cd ~/repo
            chmod +x ./replace-env.sh ./deploy.sh
            ./replace-env.sh BACKEND_TAG "${{  env.IMAGE_TAG }}"
            ./deploy.sh elearning-backend

  notify:
    name: Notify Deployment Status
    runs-on: ubuntu-latest
    needs: [build, deploy]
    if: always()
    steps:
      - name: Send Discord notification - Success
        if: ${{ needs.deploy.result == 'success' }}
        run: |
          curl -H "Content-Type: application/json" \
            -d '{
              "embeds": [{
                "title": "✅ E-learning Backend Deployment Successful",
                "description": "E-learning Backend deployed to dev server",
                "color": 3066993,
                "fields": [
                  {
                    "name": "Environment",
                    "value": "Development",
                    "inline": true
                  },
                  {
                    "name": "Branch",
                    "value": "${{ github.ref_name }}",
                    "inline": true
                  },
                  {
                    "name": "Commit",
                    "value": "`${{ github.sha }}`",
                    "inline": false
                  },
                  {
                    "name": "Image Tag",
                    "value": "`${{ env.IMAGE_TAG }}`",
                    "inline": true
                  },
                  {
                    "name": "Web URL",
                    "value": "${{ env.NEXT_PUBLIC_APP_URL }}",
                    "inline": false
                  },
                  {
                    "name": "Deployed By",
                    "value": "${{ github.actor }}",
                    "inline": true
                  }
                ],
                "footer": {
                  "text": "CMP CD Pipeline"
                },
                "timestamp": "'"$(date -u +%Y-%m-%dT%H:%M:%S.000Z)"'"
              }]
            }' \
            ${{ env.DISCORD_WEBHOOK_URL }}

      - name: Send Discord notification - Failure
        if: ${{ needs.deploy.result == 'failure' || needs.build.result == 'failure' }}
        run: |
          curl -H "Content-Type: application/json" \
            -d '{
              "embeds": [{
                "title": "❌ E-learning Backend Deployment Failed",
                "description": "Failed to deploy E-learning Backend to dev server",
                "color": 15158332,
                "fields": [
                  {
                    "name": "Environment",
                    "value": "Development",
                    "inline": true
                  },
                  {
                    "name": "Branch",
                    "value": "${{ github.ref_name }}",
                    "inline": true
                  },
                  {
                    "name": "Commit",
                    "value": "`${{ github.sha }}`",
                    "inline": false
                  },
                  {
                    "name": "Failed Job",
                    "value": "${{ needs.build.result == 'failure' && 'Build' || 'Deploy' }}",
                    "inline": true
                  },
                  {
                    "name": "Deployed By",
                    "value": "${{ github.actor }}",
                    "inline": true
                  }
                ],
                "footer": {
                  "text": "CMP CD Pipeline"
                },
                "timestamp": "'"$(date -u +%Y-%m-%dT%H:%M:%S.000Z)"'"
              }]
            }' \
            ${{ env.DISCORD_WEBHOOK_URL }}
          exit 1