pull-request.yml

name: pull-request
  
# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request
# https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request
on:
  pull_request:
    types: [opened, synchronize]

env: 
  REPOSITORY_NAME: "pull-request-vote-pr-${{ github.event.pull_request.number }}"
  OVERLAY_PATH: "manifests/overlays/pr-${{ github.event.pull_request.number }}"
  WEBSITE_PORT: $(echo $((30000 + ${{ github.event.pull_request.number }})))

jobs:
  build-push:
    runs-on: ubuntu-latest
    steps:

    # https://docs.github.com/en/issues/planning-and-tracking-with-projects/automating-your-project/automating-projects-using-actions
    # - name: echo
    #   run: |
    #     echo "REPOSITORY_NAME: ${{ env.REPOSITORY_NAME }}"
    #     echo "ID ${{ github.event.pull_request.id }}"
    #     echo "NUMBER ${{ github.event.pull_request.number }}"
    #     echo "TITLE ${{ github.event.pull_request.title }}"
    #     echo "URL ${{ github.event.pull_request.url }}"
    #     echo "HTML_URL ${{ github.event.pull_request.html_url }}"

    - name: Checkout
      # https://github.com/actions/checkout
      uses: actions/checkout@v3

    - name: Configure AWS credentials
      # https://github.com/aws-actions/configure-aws-credentials/tree/master
      uses: aws-actions/configure-aws-credentials@v1-node16
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        aws-region: ${{ secrets.AWS_REGION }}

    - name: Login to Amazon ECR
      id: login-ecr
      uses: aws-actions/amazon-ecr-login@v1

    # https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ecr/create-repository.html
    - name: Create Repository
      run: |
        if [[ -z $(aws ecr describe-repositories --repository-name ${{ env.REPOSITORY_NAME }} --query repositories[*].repositoryUri --output text 2>/dev/null) ]];
        then
          aws ecr create-repository --repository-name ${{ env.REPOSITORY_NAME }} --query 'repository.repositoryUri' --output text
        fi

    - name: Build, Tag, Push to Amazon ECR
      id: build-image
      run: |
        log()   { echo -e "\e[30;47m ${1} \e[0m ${@:2}"; }

        TAG_SHA=${{ steps.login-ecr.outputs.registry }}/${{ env.REPOSITORY_NAME }}:${GITHUB_SHA}
        log TAG_SHA ${TAG_SHA}

        cd vote
        docker image build --tag ${TAG_SHA} .

        docker push ${TAG_SHA}

        echo "TAG_SHA=${TAG_SHA}" >> $GITHUB_ENV
      
    - name: Checkout infra
      uses: actions/checkout@v3
      with:
        repository: ${{ secrets.GH_REPOSITORY_INFRA }} # jeromedecoster/argocd-pull-request-infra
        token: ${{ secrets.GH_TOKEN }}
        path: infra
        fetch-depth: 0

    - name: Push to infra repo
      run: |
        log()   { echo -e "\e[30;47m ${1} \e[0m ${@:2}"; }

        log OVERLAY_PATH ${{ env.OVERLAY_PATH }}
        log TAG_SHA ${{ env.TAG_SHA }}
        log GITHUB_SHA ${GITHUB_SHA}
        log WEBSITE_PORT ${{ env.WEBSITE_PORT }}

        cd infra
        mkdir --parents ${{ env.OVERLAY_PATH }}
        export vote_namespace=vote-pr-${{ github.event.pull_request.number }}
        export vote_image=${{ env.TAG_SHA }}
        export vote_version=${GITHUB_SHA}
        export vote_nodeport=${{ env.WEBSITE_PORT }}
        envsubst < manifests/overlays/.tmpl/kustomization.yaml > ${{ env.OVERLAY_PATH }}/kustomization.yaml
        
        git config user.name github-actions
        git config user.email github-actions@github.com
        git add .
        git commit -m "github actions: ${{ env.OVERLAY_PATH }}"
        git push

    - name: Add Labels
      uses: actions-ecosystem/action-add-labels@v1
      with:
        labels: |
          preview