name: Zcashd Manual Deploy

on:
  workflow_dispatch:
    inputs:
      network:
        default: 'testnet'
      size:
        default: 10

env:
  PROJECT_ID: ${{ secrets.GCP_PROJECT_ID }}
  REGION: us-central1
  MACHINE_TYPE: n2-standard-4
  DEPLOY_SA: cos-vm@${{ secrets.GCP_PROJECT_ID }}.iam.gserviceaccount.com

jobs:

  deploy:
    name: Deploy zcashd nodes
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v2.4.0
        with:
          persist-credentials: false

      - name: Inject slug/short variables
        uses: rlespinasse/github-slug-action@v4

      # Setup gcloud CLI
      - name: Set up gcloud SDK environment
        uses: google-github-actions/setup-gcloud@v0.5.0
        with:
          project_id: ${{ env.PROJECT_ID }}
          service_account_key: ${{ secrets.GCLOUD_AUTH }}

      # Create instance template from container image
      - name: Create instance template
        run: |
          gcloud compute instance-templates create-with-container "zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_SHA_SHORT }}" \
          --boot-disk-size 100GB \
          --container-image "electriccoinco/zcashd" \
          --container-env ZCASHD_NETWORK="${{ github.event.inputs.network }}" \
          --machine-type ${{ env.MACHINE_TYPE }} \
          --service-account ${{ env.DEPLOY_SA }} \
          --scopes cloud-platform \
          --tags zcashd \

      # Check if our destination instance group exists already
      - name: Check if instance group exists
        id: does-group-exist
        continue-on-error: true
        run: |
          gcloud compute instance-groups list | grep "zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ github.event.inputs.network }}" | grep "${{ env.REGION }}"

      # Deploy new managed instance group using the new instance template
      - name: Create managed instance group
        if: steps.does-group-exist.outcome == 'failure'
        run: |
          gcloud compute instance-groups managed create \
          "zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ github.event.inputs.network }}" \
          --template "zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_SHA_SHORT }}" \
          --region "${{ env.REGION }}" \
          --size "${{ github.event.inputs.size }}"

      # Rolls out update to existing group using the new instance template
      - name: Update managed instance group
        if: steps.does-group-exist.outcome == 'success'
        run: |
          gcloud compute instance-groups managed rolling-action start-update \
          "zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ github.event.inputs.network }}" \
          --version template="zcashd-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_SHA_SHORT }}" \
          --region "${{ env.REGION }}"