# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

# 💁 The OpenShift Starter workflow will:
# - Checkout your repository
# - Perform a container image build
# - Push the built image to the GitHub Container Registry (GHCR)
# - Log in to your OpenShift cluster
# - Create an OpenShift app from the image and expose it to the internet

# ℹ️ Configure your repository and the workflow with the following steps:
# 1. Have access to an OpenShift cluster. Refer to https://www.openshift.com/try
# 2. Create the OPENSHIFT_SERVER and OPENSHIFT_TOKEN repository secrets. Refer to:
#   - https://github.com/redhat-actions/oc-login#readme
#   - https://docs.github.com/en/actions/reference/encrypted-secrets
#   - https://cli.github.com/manual/gh_secret_set
# 3. (Optional) Edit the top-level 'env' section as marked with '🖊️' if the defaults are not suitable for your project.
# 4. (Optional) Edit the build-image step to build your project.
#    The default build type is by using a Dockerfile at the root of the repository,
#    but can be replaced with a different file, a source-to-image build, or a step-by-step buildah build.
# 5. Commit and push the workflow file to your default branch to trigger a workflow run.

# 👋 Visit our GitHub organization at https://github.com/redhat-actions/ to see our actions and provide feedback.

name: OpenShift

env:
  # 🖊️ EDIT your repository secrets to log into your OpenShift cluster and set up the context.
  # See https://github.com/redhat-actions/oc-login#readme for how to retrieve these values.
  # To get a permanent token, refer to https://github.com/redhat-actions/oc-login/wiki/Using-a-Service-Account-for-GitHub-Actions
  OPENSHIFT_SERVER: ${{ secrets.OPENSHIFT_SERVER }}
  OPENSHIFT_TOKEN: ${{ secrets.OPENSHIFT_TOKEN }}
  # 🖊️ EDIT to set the kube context's namespace after login. Leave blank to use your user's default namespace.
  OPENSHIFT_NAMESPACE: ""

  # 🖊️ EDIT to set a name for your OpenShift app, or a default one will be generated below.
  APP_NAME: ""

  # 🖊️ EDIT with the port your application should be accessible on.
  # If the container image exposes *exactly one* port, this can be left blank.
  # Refer to the 'port' input of https://github.com/redhat-actions/oc-new-app
  APP_PORT: ""

  # 🖊️ EDIT to change the image registry settings.
  # Registries such as GHCR, Quay.io, and Docker Hub are supported.
  IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
  IMAGE_REGISTRY_USER: ${{ github.actor }}
  IMAGE_REGISTRY_PASSWORD: ${{ github.token }}

  # 🖊️ EDIT to specify custom tags for the container image, or default tags will be generated below.
  IMAGE_TAGS: ""

on:
  # https://docs.github.com/en/actions/reference/events-that-trigger-workflows
  push:
    # Edit to the branch(es) you want to build and deploy on each push.
    branches: [ $default-branch ]

jobs:
  openshift-ci-cd:
    name: Build and deploy to OpenShift
    # ubuntu-20.04 can also be used.
    runs-on: ubuntu-18.04
    environment: production

    outputs:
      ROUTE: ${{ steps.deploy-and-expose.outputs.route }}
      SELECTOR: ${{ steps.deploy-and-expose.outputs.selector }}

    steps:
    - name: Check for required secrets
      uses: actions/github-script@v4
      with:
        script: |
          const secrets = {
            OPENSHIFT_SERVER: `${{ secrets.OPENSHIFT_SERVER }}`,
            OPENSHIFT_TOKEN: `${{ secrets.OPENSHIFT_TOKEN }}`,
          };

          const GHCR = "ghcr.io";
          if (`${{ env.IMAGE_REGISTRY }}`.startsWith(GHCR)) {
            core.info(`Image registry is ${GHCR} - no registry password required`);
          }
          else {
            core.info("A registry password is required");
            secrets["IMAGE_REGISTRY_PASSWORD"] = `${{ secrets.IMAGE_REGISTRY_PASSWORD }}`;
          }

          const missingSecrets = Object.entries(secrets).filter(([ name, value ]) => {
            if (value.length === 0) {
              core.error(`Secret "${name}" is not set`);
              return true;
            }
            core.info(`✔️ Secret "${name}" is set`);
            return false;
          });

          if (missingSecrets.length > 0) {
            core.setFailed(`❌ At least one required secret is not set in the repository. \n` +
              "You can add it using:\n" +
              "GitHub UI: https://docs.github.com/en/actions/reference/encrypted-secrets#creating-encrypted-secrets-for-a-repository \n" +
              "GitHub CLI: https://cli.github.com/manual/gh_secret_set \n" +
              "Also, refer to https://github.com/redhat-actions/oc-login#getting-started-with-the-action-or-see-example");
          }
          else {
            core.info(`✅ All the required secrets are set`);
          }

    - name: Check out repository
      uses: actions/checkout@v2

    - name: Determine app name
      if: env.APP_NAME == ''
      run: |
        echo "APP_NAME=$(basename $PWD)" | tee -a $GITHUB_ENV

    - name: Determine image tags
      if: env.IMAGE_TAGS == ''
      run: |
        echo "IMAGE_TAGS=latest ${GITHUB_SHA::12}" | tee -a $GITHUB_ENV

    # https://github.com/redhat-actions/buildah-build#readme
    - name: Build from Dockerfile
      id: build-image
      uses: redhat-actions/buildah-build@v2
      with:
        image: ${{ env.APP_NAME }}
        tags: ${{ env.IMAGE_TAGS }}

        # If you don't have a Dockerfile/Containerfile, refer to https://github.com/redhat-actions/buildah-build#scratch-build-inputs
        # Or, perform a source-to-image build using https://github.com/redhat-actions/s2i-build
        # Otherwise, point this to your Dockerfile/Containerfile relative to the repository root.
        dockerfiles: |
          ./Dockerfile

    # https://github.com/redhat-actions/push-to-registry#readme
    - name: Push to registry
      id: push-image
      uses: redhat-actions/push-to-registry@v2
      with:
        image: ${{ steps.build-image.outputs.image }}
        tags: ${{ steps.build-image.outputs.tags }}
        registry: ${{ env.IMAGE_REGISTRY }}
        username: ${{ env.IMAGE_REGISTRY_USER }}
        password: ${{ env.IMAGE_REGISTRY_PASSWORD }}

    # The path the image was pushed to is now stored in ${{ steps.push-image.outputs.registry-path }}

    - name: Install oc
      uses: redhat-actions/openshift-tools-installer@v1
      with:
        oc: 4

    # https://github.com/redhat-actions/oc-login#readme
    - name: Log in to OpenShift
      uses: redhat-actions/oc-login@v1
      with:
        openshift_server_url: ${{ env.OPENSHIFT_SERVER }}
        openshift_token: ${{ env.OPENSHIFT_TOKEN }}
        insecure_skip_tls_verify: true
        namespace: ${{ env.OPENSHIFT_NAMESPACE }}

    # This step should create a deployment, service, and route to run your app and expose it to the internet.
    # https://github.com/redhat-actions/oc-new-app#readme
    - name: Create and expose app
      id: deploy-and-expose
      uses: redhat-actions/oc-new-app@v1
      with:
        app_name: ${{ env.APP_NAME }}
        image: ${{ steps.push-image.outputs.registry-path }}
        namespace: ${{ env.OPENSHIFT_NAMESPACE }}
        port: ${{ env.APP_PORT }}

    - name: Print application URL
      env:
        ROUTE: ${{ steps.deploy-and-expose.outputs.route }}
        SELECTOR: ${{ steps.deploy-and-expose.outputs.selector }}
      run: |
        [[ -n ${{ env.ROUTE }} ]] || (echo "Determining application route failed in previous step"; exit 1)
        echo
        echo "======================== Your application is available at: ========================"
        echo ${{ env.ROUTE }}
        echo "==================================================================================="
        echo
        echo "Your app can be taken down with: \"oc delete all --selector='${{ env.SELECTOR }}'\""