name: K8s Bootstrap Setup

on:
  workflow_dispatch:

jobs:
  bootstrap:
    runs-on: mealcraft-runners

    steps:
    # -----------------------------------------------------
    # Checkout Repo
    # -----------------------------------------------------
    - uses: actions/checkout@v4

    # -----------------------------------------------------
    # Install kubectl
    # -----------------------------------------------------
    - name: Install kubectl
      run: |
        sudo apt-get update
        sudo apt-get install -y ca-certificates curl
        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

    # -----------------------------------------------------
    # Configure kubeconfig via ARC pod token
    # -----------------------------------------------------
    - 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

    # -----------------------------------------------------
    # Install buildctl (standalone BuildKit client)
    # -----------------------------------------------------
    - name: Install buildctl
      run: |
        sudo apt-get update && sudo apt-get install -y curl
        curl -sSL https://github.com/moby/buildkit/releases/download/v0.12.5/buildkit-v0.12.5.linux-amd64.tar.gz -o buildkit.tar.gz
        tar -xzf buildkit.tar.gz
        sudo mv bin/buildctl /usr/local/bin/
        sudo chmod +x /usr/local/bin/buildctl

    # -----------------------------------------------------
    # Build & Push Docker Image (NO docker, NO buildx, NO daemon)
    # -----------------------------------------------------
    - name: Build & Push Traefik Image
      env:
        DOCKER_USER: ${{ secrets.DOCKER_HUB_USERNAME }}
        DOCKER_PASS: ${{ secrets.DOCKER_HUB_PASSWORD }}
        IMAGE_SHA: docker.io/kimjunte/edge_router:${{ github.sha }}
        IMAGE_LATEST: docker.io/kimjunte/edge_router:latest
      run: |
        AUTH=$(printf "%s:%s" "$DOCKER_USER" "$DOCKER_PASS" | base64 -w0)

        # Build + Push SHA tag
        buildctl build \
          --frontend dockerfile.v0 \
          --local context="${GITHUB_WORKSPACE}/traefik" \
          --local dockerfile="${GITHUB_WORKSPACE}/traefik" \
          --opt platform=linux/amd64 \
          --output type=registry,name=${IMAGE_SHA},push=true,registry.auth=${AUTH}

        # Build + Push latest tag
        buildctl build \
          --frontend dockerfile.v0 \
          --local context="${GITHUB_WORKSPACE}/traefik" \
          --local dockerfile="${GITHUB_WORKSPACE}/traefik" \
          --opt platform=linux/amd64 \
          --output type=registry,name=${IMAGE_LATEST},push=true,registry.auth=${AUTH}

    # -----------------------------------------------------
    # Apply Storage Classes + PVCs
    # -----------------------------------------------------
    - name: Apply StorageClass + PV
      run: |
        kubectl apply -f traefik/storageclass/storageclass.yaml
        kubectl apply -f traefik/storageclass/certs-pv.yaml

    # -----------------------------------------------------
    # Install Traefik CRDs (idempotent)
    # -----------------------------------------------------
    - name: Install Traefik CRDs
      run: |
        if ! kubectl get crd ingressroutes.traefik.containo.us >/dev/null 2>&1; then
          kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.10/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml
          kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.10/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml
          kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.10/docs/content/user-guides/crd-acme/05-tlsoption.yml
        fi

    # -----------------------------------------------------
    # Deploy Traefik
    # -----------------------------------------------------
    - name: Deploy Traefik
      run: |
        kubectl apply -f traefik/edge-router/pvc.yaml
        kubectl apply -f traefik/edge-router/traefik-deployment.yml
        kubectl apply -f traefik/edge-router/traefik-services.yml
        kubectl apply -f traefik/edge-router/middleware.yaml
        kubectl apply -f traefik/edge-router/secret-dashboard.yml
        kubectl apply -f traefik/edge-router/traefik-ingressroute.yml

    # -----------------------------------------------------
    # Deploy whoami test service
    # -----------------------------------------------------
    - name: Deploy whoami
      run: |
        kubectl apply -f traefik/who-am-i/whoami-deployment.yml
        kubectl apply -f traefik/who-am-i/whoami-service.yml
        kubectl apply -f traefik/who-am-i/whoami-ingressroute.yml

    # -----------------------------------------------------
    # Create registry secret in default namespace
    # -----------------------------------------------------
    - name: Create registry secret (default)
      run: |
        kubectl apply -f traefik/docker-registry-credentials/docker-credentials.yml

    # -----------------------------------------------------
    # Ensure staging namespace exists
    # -----------------------------------------------------
    - name: Create staging namespace
      run: |
        kubectl get ns staging >/dev/null 2>&1 || kubectl create namespace staging

    # -----------------------------------------------------
    # Apply registry secret to staging
    # -----------------------------------------------------
    - name: Registry secret to staging
      run: |
        sed 's/namespace: default/namespace: staging/' \
          traefik/docker-registry-credentials/docker-credentials.yml \
          | kubectl apply -f -