styleguide.yml

name: Style guide

on:
  pull_request:
    types: [labeled, opened, synchronize, reopened]
  push:
    branches:
      - 'master'
    paths-ignore:
      - 'packages/contentful/**'

env:
  DOCKER_REPOSITORY: europeana/styleguide

jobs:
  metadata:
    if: (github.event_name == 'push' && github.event.ref == 'refs/heads/master') || contains(github.event.pull_request.labels.*.name, 'styleguide')
    runs-on: ubuntu-latest
    outputs:
      git-master-push: ${{ steps.git-master-push.outputs.status }}
      git-pr-labeled: ${{ steps.git-pr-labeled.outputs.status }}
      docker-labels: ${{ steps.docker.outputs.labels }}
      docker-tags: ${{ steps.docker.outputs.tags }}
      docker-version: ${{ steps.docker.outputs.version }}
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Git metadata, master push
        id: git-master-push
        if: github.event_name == 'push' && github.event.ref == 'refs/heads/master'
        run: echo "status=true" >> $GITHUB_OUTPUT
      -
        name: Git metadata, PR labeled
        id: git-pr-labeled
        if: contains(github.event.pull_request.labels.*.name, 'styleguide')
        run: echo "status=true" >> $GITHUB_OUTPUT
      -
        name: Docker metadata
        id: docker
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.DOCKER_REPOSITORY }}
          tags: |
            type=ref,event=pr
            type=ref,event=branch

  docker-build:
    if: needs.metadata.outputs.git-master-push == 'true' || needs.metadata.outputs.git-pr-labeled == 'true'
    runs-on: ubuntu-latest
    needs: [metadata]
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      -
        name: Login to DockerHub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Build and push
        uses: docker/build-push-action@v3
        with:
          context: .
          file: ./styleguide/Dockerfile
          pull: true
          push: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: ${{ needs.metadata.outputs.docker-tags }}
          labels: ${{ needs.metadata.outputs.docker-labels }}

  deploy-ibm-cloud:
    runs-on: ubuntu-latest
    needs: [metadata, docker-build]
    env:
      IBMCLOUD_API_KEY: ${{ secrets.IBMCLOUD_API_KEY }}
      IBMCLOUD_API_URL: ${{ vars.IBMCLOUD_API_URL }}
      IBMCLOUD_CLUSTER_NAME: ${{ vars.IBMCLOUD_CLUSTER_NAME }}
      IBMCLOUD_REGION: ${{ vars.IBMCLOUD_REGION }}
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Set image tag for deployment
        run: echo "DOCKER_IMAGE_TAG=${{ env.DOCKER_REPOSITORY }}:${{ needs.metadata.outputs.docker-version }}" >> $GITHUB_ENV
      -
        name: Prepare env for internal namespace
        if: needs.metadata.outputs.git-master-push == 'true'
        run: |
          echo "K8S_NAMESPACE=internal" >> $GITHUB_ENV
          echo "K8S_RESOURCE_NAME=styleguide" >> $GITHUB_ENV
          echo "K8S_INGRESS_HOST=styleguide.eanadev.org" >> $GITHUB_ENV
      -
        name: Prepare env for dev namespace
        if: needs.metadata.outputs.git-pr-labeled == 'true'
        run: |
          echo "K8S_NAMESPACE=dev" >> $GITHUB_ENV
          echo "K8S_RESOURCE_NAME=styleguide-${{ needs.metadata.outputs.docker-version }}" >> $GITHUB_ENV
          echo "K8S_INGRESS_HOST=${{ needs.metadata.outputs.docker-version }}.styleguide.dev.eanadev.org" >> $GITHUB_ENV
      -
        name: Create K8s resource manifests
        run: |
          envsubst < .github/workflows/support/styleguide/k8s/deployment.yml > deployment.yml
          envsubst < .github/workflows/support/styleguide/k8s/service.yml > service.yml
          envsubst < .github/workflows/support/styleguide/k8s/ingress.yml > ingress.yml
      -
        name: Install ibmcloud CLI
        run: |
          curl -fsSL https://clis.cloud.ibm.com/install/linux | sh
          ibmcloud plugin install container-service
      -
        name: Login to IBM Cloud
        run: |
          ibmcloud login -a ${IBMCLOUD_API_URL} -r ${IBMCLOUD_REGION} --apikey ${IBMCLOUD_API_KEY}
          ibmcloud ks cluster config --cluster ${IBMCLOUD_CLUSTER_NAME}
      -
        name: Detect new deployment
        if: needs.metadata.outputs.git-pr-labeled == 'true'
        run: |
          set +e
          kubectl --namespace ${K8S_NAMESPACE} get deployment ${K8S_RESOURCE_NAME}
          if [ $? -eq 1 ]; then K8S_NEW_DEPLOYMENT="true"; else K8S_NEW_DEPLOYMENT="false"; fi
          set -e
          echo K8S_NEW_DEPLOYMENT=${K8S_NEW_DEPLOYMENT} >> $GITHUB_ENV
      -
        name: Apply resource manifests to K8s
        if: needs.metadata.outputs.git-pr-labeled == 'true'
        run: |
          kubectl apply -f deployment.yml
          kubectl apply -f service.yml
          kubectl apply -f ingress.yml
      -
        name: Restart deployment
        run: kubectl rollout restart --namespace ${K8S_NAMESPACE} deployment/${K8S_RESOURCE_NAME}
      -
        name: Comment with deployment link on pull request
        if: env.K8S_NEW_DEPLOYMENT == 'true'
        uses: actions/github-script@v6
        with:
          script: |
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Style guide deployment: https://${process.env.K8S_INGRESS_HOST}/`
            })