upgrader.yaml

name: SDK version upgrade

on:
  schedule:
    - cron: "0 */12 * * *"

jobs:
  check:
    runs-on: ubuntu-latest    
    steps:
      - name: Checkout repo
        run: |
          git config --global url."https://${{ secrets.GH_TOKEN }}:@github.com/".insteadOf "https://github.com/"
          git clone https://github.com/actions-hub/gcloud .
          
      - name: Check if new version exist
        id: check
        run: |
          SDK_VERSION=$(curl --silent "https://api.github.com/repos/GoogleCloudPlatform/cloud-sdk-docker/tags" | tac | grep '"name":' | sed -E 's/.*"([^"]+)".*/\1/' | sort -V -r | head -n 1)
          LATEST_VERSION=$(curl --silent "https://api.github.com/repos/actions-hub/gcloud/releases/latest" | tac | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
          DOCKER_VERSION=$(cat $GITHUB_WORKSPACE/Dockerfile | grep "FROM google/cloud-sdk:" | sed -E 's/FROM google\/cloud-sdk://' | sed -E 's/-alpine//')
          
          echo $SDK_VERSION
          echo $LATEST_VERSION
          echo $DOCKER_VERSION
          
          if [ "$SDK_VERSION" != "$LATEST_VERSION" ]; then
            if [ "$LATEST_VERSION" = "`echo -e "$SDK_VERSION\n$LATEST_VERSION" | sort -V | head -n1`" ]; then
              if [ "$DOCKER_VERSION" == "$LATEST_VERSION" ]; then
                echo "New version detected: $SDK_VERSION. Latest in this repo: $LATEST_VERSION. Updating..."
              
                echo ::set-output name=exist::"yes"
                echo ::set-env name=SDK_VERSION::$SDK_VERSION
                echo ::set-env name=LATEST_VERSION::$LATEST_VERSION
              else
                echo ::error::"Tag version in Dockerfile ($DOCKER_VERSION) is not the same as the latest release ($LATEST_VERSION)."
                exit 1
              fi
            else
              echo ::set-output name=exist::"no"
            fi
          else
            echo ::set-output name=exist::"no"
          fi
          
      - name: Modify Dockerfile
        id: modify
        if: steps.check.outputs.exist == 'yes'
        run: |
          git config --global url."https://${{ secrets.GH_TOKEN }}:@github.com/".insteadOf "https://github.com/"
          git config --global user.name "Serhiy Mytrovtsiy"
          git config --global user.email "mitrovtsiy@ukr.net"
          
          git checkout master
          
          FROM_LINE="FROM google\/cloud-sdk:$LATEST_VERSION-alpine"
          TO_LINE="FROM google\/cloud-sdk:$SDK_VERSION-alpine"
          sed -i "s/${FROM_LINE}/${TO_LINE}/" $GITHUB_WORKSPACE/Dockerfile
          
          git add $GITHUB_WORKSPACE/Dockerfile
          git commit -m "updated gcloud-sdk to $SDK_VERSION"
          git push
          
          echo ::set-output name=tag::$SDK_VERSION

      - name: Create new release
        if: steps.modify.outputs.tag != '0'
        uses: ncipollo/release-action@v1
        with:
          tag: ${{ steps.modify.outputs.tag }}
          token: ${{ secrets.GH_TOKEN }}