name: Deploy n8n

on:
  push:
    branches:
      - main
    tags:
      - "*"

env:
  IMAGE_NAME: "docker.io/kimjunte/n8n"
  MANIFEST_PATH: "k8s/n8n.yml"

jobs:
  build-and-push:
    runs-on: ubuntu-22.04

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Inject slug variables
        uses: rlespinasse/github-slug-action@v4

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

      - name: Build n8n image
        run: |
          docker build \
            -t $IMAGE_NAME:$GITHUB_REF_SLUG \
            n8n/   # <--- update if your Dockerfile lives somewhere else

      - name: Push image
        run: |
          docker push $IMAGE_NAME:$GITHUB_REF_SLUG

  deploy:
    runs-on: mealcraft-runners
    needs: build-and-push

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

      # Install kubectl
      - name: Install kubectl
        run: |
          sudo apt-get update
          sudo apt-get install -y curl ca-certificates
          curl -LO "https://dl.k8s.io/release/$(curl -sL https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
          sudo install -m 0755 kubectl /usr/local/bin/kubectl

      # Install envsubst
      - name: Install envsubst
        run: |
          sudo apt-get update
          sudo apt-get install -y gettext

      # Configure kubeconfig from ARC pod service account
      - name: Configure kubeconfig
        run: |
          KUBE_HOST="https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT"
          SA_TOKEN=$(cat /var/run/secrets/kubernetes.io/serviceaccount/token)
          CA_CERT=/var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          NAMESPACE=$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace)

          kubectl config set-cluster microk8s --server="$KUBE_HOST" --certificate-authority="$CA_CERT"
          kubectl config set-credentials runner --token="$SA_TOKEN"
          kubectl config set-context runner-context --cluster=microk8s --user=runner --namespace="$NAMESPACE"
          kubectl config use-context runner-context

      - name: Deploy n8n to Kubernetes
        env:
          IMAGE: "${{ env.IMAGE_NAME }}:${{ github.ref_name }}"
        run: |
          echo "Deploying n8n with IMAGE=$IMAGE"
          export IMAGE
          envsubst < $MANIFEST_PATH | kubectl apply -f -