name: CI and Deploy

on:
  workflow_dispatch:
  pull_request:
    branches:
      - master
  push:
    branches:
      - master

env:
  REGISTRY: tea.jesseinit.dev
  IMAGE_NAME: ${{ github.repository_owner }}/personal-site
  NAMESPACE: personal-site
  DEPLOYMENT: jesseinit-portfolio

permissions:
  contents: read

concurrency:
  group: deploy-${{ github.ref }}
  cancel-in-progress: false

jobs:
  ci:
    name: Build site
    runs-on: ubuntu-latest
    timeout-minutes: 15
    # The Gitea runner image only caches Node 24; match the Dockerfile's Node 22.
    container: node:22-bookworm
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Install dependencies
        run: npm ci

      - name: Build
        run: npm run build

      - name: Validate Kubernetes manifests
        run: |
          curl -fsSL "https://dl.k8s.io/release/v1.34.3/bin/linux/amd64/kubectl" -o /usr/local/bin/kubectl
          chmod +x /usr/local/bin/kubectl
          kubectl kustomize k8s/ > /dev/null

  build-image:
    name: Build and push image
    needs: ci
    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Log in to Gitea Container Registry
        uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.repository_owner }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Extract image metadata
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest
            type=sha,format=long

      - name: Build and push image
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          cache-to: type=inline

  deploy:
    name: Deploy to Kubernetes
    needs: build-image
    runs-on: ubuntu-latest
    environment: production
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Set up kubectl
        uses: azure/setup-kubectl@v5.1.0
        with:
          version: v1.34.3

      - name: Configure kubectl
        env:
          KUBE_CONFIG_B64: ${{ secrets.KUBE_CONFIG }}
        run: |
          set -euo pipefail

          if [ -z "${KUBE_CONFIG_B64}" ]; then
            echo "::error::KUBE_CONFIG is not configured in the production environment or repository."
            exit 1
          fi

          KUBECONFIG_PATH="${RUNNER_TEMP}/personal-site-kubeconfig"
          umask 077
          printf '%s' "${KUBE_CONFIG_B64}" | base64 --decode > "${KUBECONFIG_PATH}"
          echo "KUBECONFIG=${KUBECONFIG_PATH}" >> "${GITHUB_ENV}"

          KUBECONFIG="${KUBECONFIG_PATH}" kubectl cluster-info --request-timeout=15s

      - name: Set up kustomize
        env:
          KUSTOMIZE_VERSION: v5.7.1
        run: |
          mkdir -p "${RUNNER_TEMP}/bin"
          curl -fsSL "https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2F${KUSTOMIZE_VERSION}/kustomize_${KUSTOMIZE_VERSION}_linux_amd64.tar.gz" \
            | tar -xz -C "${RUNNER_TEMP}/bin" kustomize
          echo "${RUNNER_TEMP}/bin" >> "${GITHUB_PATH}"

      - name: Pin image to this commit
        working-directory: k8s
        run: kustomize edit set image "jesseinit-portfolio=${REGISTRY}/${IMAGE_NAME}:sha-${GITHUB_SHA}"

      - name: Apply manifests
        run: kubectl apply -k k8s/

      - name: Wait for rollout
        run: |
          if ! kubectl rollout status "deployment/${DEPLOYMENT}" -n "${NAMESPACE}" --timeout=5m; then
            kubectl get pods -n "${NAMESPACE}" -o wide
            kubectl describe pods -n "${NAMESPACE}" | tail -40
            kubectl rollout undo "deployment/${DEPLOYMENT}" -n "${NAMESPACE}" || true
            exit 1
          fi

      - name: Verify deployment
        run: |
          kubectl get deployments,pods,services,ingress -n "${NAMESPACE}"
          echo "### Deployed sha-${GITHUB_SHA} to ${NAMESPACE}" >> "${GITHUB_STEP_SUMMARY}"