name: CI

on:
  push:

env:
  PROJECT_ID: zealous-zebra
  GCLOUD_ZONE: us-central1-a

jobs:
  build:
    name: Google Cloud Build
    runs-on: ubuntu-latest
    steps:

    - name: Checkout
      uses: actions/checkout@master

    - name: Set project and image names
      run: |
        BRANCH_NAME=$GITHUB_REPOSITORY/$(expr $GITHUB_REF : '.*/\(.*\)') && \
        BRANCH_NAME=${BRANCH_NAME,,} && \
        echo "::set-env name=BRANCH_NAME::$BRANCH_NAME" && \
        echo "::set-env name=SHA7::$(git rev-parse --short=7 $GITHUB_SHA)"

    # Setup gcloud CLI
    - uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
      with:
        version: '295.0.0'
        project_id: ${{ env.PROJECT_ID }}
        service_account_key: ${{ secrets.GCLOUD_AUTH }}

    # - name: Build, Test, Push to GCR
    #   run: |
    #     BRANCH_NAME=$GITHUB_REPOSITORY/$(expr $GITHUB_REF : '.*/\(.*\)') && \
    #     BRANCH_NAME=${BRANCH_NAME,,} && \
    #     gcloud builds submit . \
    #       --config cloudbuild.yaml \
    #       --project "$PROJECT_ID" \
    #       --substitutions "BRANCH_NAME=$BRANCH_NAME" \

    # Build and push image to Google Container Registry
    - name: Build
      # Tagging w/ the commit SHA blocks the :latest tag on GCR
      run: |
        gcloud builds submit \
          --tag "gcr.io/$PROJECT_ID/$BRANCH_NAME:$SHA7" \
          --machine-type n1-highcpu-32 \
          --timeout 3600s \

    # Create instance template from container image
    - name: Create instance template
      run: |
        gcloud compute instance-templates create-with-container "zebrad-$SHA7" \
          --service-account cos-vm@zealous-zebra.iam.gserviceaccount.com \
          --scopes cloud-platform \
          --container-image "gcr.io/$PROJECT_ID/$BRANCH_NAME:$SHA7"

    # Deploy image to Compute Engine
    # - name: Deploy
    #   run: |
    #     gcloud compute instances create-with-container "zebrad-$SHA7" \
    #       --zone "$GCLOUD_ZONE" \
    #       --service-account cos-vm@zealous-zebra.iam.gserviceaccount.com \
    #       --scopes cloud-platform \
    #       --container-image "gcr.io/$PROJECT_ID/$BRANCH_NAME:$SHA7" \

    # Deploy managed instance group using the new instance template
    - name: Deploy managed instance group
      run: |
        gcloud compute instance-groups managed create "zebrad-$SHA7" \
          --template "zebrad-$SHA7" \
          --base-instance-name "zebrad-$SHA7" \
          --size 3 \
          --zone "$GCLOUD_ZONE"