name: Backend CI/CD Pipeline

on:
  push:
    branches:
      - k8s

env:
  REGISTRY: ${{ vars.REGISTRY || 'dg0200cr.azurecr.io' }}
  IMAGE_ORG: ${{ vars.IMAGE_ORG || 'lifesub' }}

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: '21'
          distribution: 'temurin'

      - name: Setup Gradle
        uses: gradle/gradle-build-action@v3

      - name: Build applications
        run: |
          chmod +x gradlew
          ./gradlew clean :member:build :mysub-infra:build :recommend:build

      - name: Upload build artifacts
        uses: actions/upload-artifact@v4
        with:
          name: build-artifacts
          path: |
            member/build/libs
            mysub-infra/build/libs
            recommend/build/libs

  release:
    needs: build
    runs-on: ubuntu-latest
    outputs:
      image_tag: ${{ steps.set-tag.outputs.tag }}

    steps:
      - uses: actions/checkout@v4

      - name: Download build artifacts
        uses: actions/download-artifact@v4
        with:
          name: build-artifacts

      - name: Set timestamp for image tag
        id: set-tag
        run: echo "tag=$(date +'%Y%m%d%H%M%S')" >> $GITHUB_OUTPUT

      - name: Login to Azure Container Registry
        uses: azure/docker-login@v1
        with:
          login-server: ${{ env.REGISTRY }}
          username: ${{ secrets.ACR_USERNAME }}
          password: ${{ secrets.ACR_PASSWORD }}

      - name: Build and push images
        run: |
          for service in member mysub recommend; do
            build_dir=$([[ "$service" == "mysub" ]] && echo "mysub-infra" || echo "$service")
            jar_file=$([[ "$service" == "mysub" ]] && echo "mysub.jar" || echo "${service}.jar")
          
            docker build \
              --build-arg BUILD_LIB_DIR="${build_dir}/build/libs" \
              --build-arg ARTIFACTORY_FILE="${jar_file}" \
              -f deployment/Dockerfile \
              -t ${{ env.REGISTRY }}/${{ env.IMAGE_ORG }}/${service}:${{ steps.set-tag.outputs.tag }} .
          
            docker push ${{ env.REGISTRY }}/${{ env.IMAGE_ORG }}/${service}:${{ steps.set-tag.outputs.tag }}
          done

  deploy:
    needs: release
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Azure login
        uses: azure/login@v1
        with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}

      - name: Set AKS context
        uses: azure/aks-set-context@v3
        with:
          resource-group: ictcoe-edu
          cluster-name: dg0200-aks

      - name: Load environment variables
        run: source deployment/deploy_env_vars

      - name: Generate manifest
        run: |
          export namespace=dg0200-lifesub-ns
          export allowed_origins=http://4.230.156.229
          export jwt_secret_key=${{ secrets.JWT_SECRET_KEY }}
          export postgres_user=${{ secrets.POSTGRES_USER }}
          export postgres_password=${{ secrets.POSTGRES_PASSWORD }}
          export replicas=2
          export resources_requests_cpu=256m
          export resources_requests_memory=256Mi
          export resources_limits_cpu=1024m
          export resources_limits_memory=1024Mi
          
          # Set image paths with tag from release job
          export member_image_path=${{ env.REGISTRY }}/${{ env.IMAGE_ORG }}/member:${{ needs.release.outputs.image_tag }}
          export mysub_image_path=${{ env.REGISTRY }}/${{ env.IMAGE_ORG }}/mysub:${{ needs.release.outputs.image_tag }}
          export recommend_image_path=${{ env.REGISTRY }}/${{ env.IMAGE_ORG }}/recommend:${{ needs.release.outputs.image_tag }}
          
          envsubst < deployment/deploy.yaml.template > deployment/deploy.yaml
          cat deployment/deploy.yaml

      - name: Deploy to AKS
        run: |
          kubectl apply -f deployment/deploy.yaml
          
          echo "Waiting for deployments to be ready..."
          kubectl -n dg0200-lifesub-ns wait --for=condition=available deployment/member --timeout=300s
          kubectl -n dg0200-lifesub-ns wait --for=condition=available deployment/mysub --timeout=300s
          kubectl -n dg0200-lifesub-ns wait --for=condition=available deployment/recommend --timeout=300s