name: k3s

on:
  push:
    branches: [ "main" ]
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install kubectl
        env:
          K3S_TOKEN: ${{ secrets.K3S_TOKEN }}
          K3S_CERT: ${{ secrets.K3S_CERT }}
        shell: bash
        run: |
          # Fetch the latest stable version of kubectl
          KUBECTL_VERSION=$(curl -s https://dl.k8s.io/release/stable.txt)
          if [ -z "$KUBECTL_VERSION" ]; then
            echo "Failed to fetch the latest kubectl version. Exiting."
            exit 1
          fi

          # Download kubectl binary
          curl -LO "https://dl.k8s.io/release/v1.31.0/bin/linux/amd64/kubectl"
          if [ $? -ne 0 ]; then
            echo "Failed to download kubectl binary. Exiting."
            exit 1
          fi

          # Make kubectl executable and move to PATH
          chmod +x kubectl
          sudo mv kubectl /usr/local/bin/

          # Verify kubectl installation
          kubectl version --client

          # Install kubelogin
          curl -fsSLO https://github.com/int128/kubelogin/releases/download/v1.25.4/kubelogin_linux_amd64.zip
          unzip kubelogin_linux_amd64.zip kubelogin -d kubelogin
          mv kubelogin/kubelogin kubelogin/kubectl-oidc_login
          export PATH=$PATH:$(realpath kubelogin)
          
          # Create the kubeconfig file with the K3S_TOKEN and K3S_CERT
          mkdir -p ~/.kube

          # Base64 decode the K3S_CERT and write it to a file
          echo "$K3S_CERT" | base64 --decode > ~/.kube/ca.crt

          # Create the kubeconfig file
          cat <<EOF > ~/.kube/config
apiVersion: v1
kind: Config
clusters:
  - name: k3s-cluster
    cluster:
      certificate-authority: ~/.kube/ca.crt
      server: https://kubernetes.default.svc:6443
users:
  - name: k3s-user
    user:
      token: $K3S_TOKEN
contexts:
  - name: k3s-context
    context:
      cluster: k3s-cluster
      user: k3s-user
current-context: k3s-context
EOF

          # Test the kubeconfig setup by printing the cluster info
          kubectl cluster-info

          # Apply Kubernetes configuration
          kubectl delete -f kubernetes.yaml
          kubectl apply -f kubernetes.yaml