dockerfile_version_check.yaml

name: Dockerfile Version Check

on:
  pull_request:
    paths:
      - "docker/Dockerfile.*"
      - "docker/docker-compose.yaml"

jobs:
  check-docker-version:
    runs-on: ubuntu-latest

    steps:
      # Checkout the code
      - name: Checkout code
        uses: actions/checkout@v3

      # Fetch base branch (e.g., 'main') for comparison
      - name: Fetch base branch for comparison
        run: |
          git fetch origin +refs/heads/${{ github.base_ref }}:refs/remotes/origin/${{ github.base_ref }}

      # Define a function to check version increment for a given service
      - name: Check Dockerfile changes and version increment for each service
        run: |
          # List the services and their corresponding Dockerfiles
          cd docker/
          declare -A services
          services=( 
            ["isaac-sim"]="Dockerfile.isaac-ros"
            ["robot"]="Dockerfile.airstack-dev"
            # Add more mappings here for other services
          )

          # Compare the current branch with the base branch
          changes=$(git diff --name-only origin/${{ github.base_ref }}...HEAD)

          # Loop through each service and its Dockerfile
          for service in "${!services[@]}"; do
            dockerfile="${services[$service]}"

            # If the Dockerfile for this service has been changed
            if echo "$changes" | grep -q "$dockerfile"; then
              echo "Dockerfile for $service has changed."

              # Check if the docker-compose.yaml contains an image version for this service (vX.Y.Z)
              if grep -qE "image: .*/$service:.*v[0-9]+\.[0-9]+\.[0-9]+" docker-compose.yaml; then
                # Extract the full version (vX.Y.Z)
                current_version=$(grep -oP "image: .*/$service:v\K[0-9]+\.[0-9]+\.[0-9]+" docker-compose.yaml)

                # Split current version into major, minor, patch
                IFS='.' read -r current_major current_minor current_patch <<< "$current_version"

                # Check if the image version for this service has been incremented in this PR
                new_version=$(git diff origin/${{ github.base_ref }}...HEAD -- docker-compose.yaml | grep -oP "image: .*/$service:v\K[0-9]+\.[0-9]+\.[0-9]+")

                if [ -z "$new_version" ]; then
                  echo "::error::Dockerfile for $service was modified but image version in docker-compose.yaml was not updated."
                  exit 1
                fi

                # Split new version into major, minor, patch
                IFS='.' read -r new_major new_minor new_patch <<< "$new_version"

                # Check if the new version is higher than the current one
                if [ "$new_major" -gt "$current_major" ] || \
                  ([ "$new_major" -eq "$current_major" ] && [ "$new_minor" -gt "$current_minor" ]) || \
                  ([ "$new_major" -eq "$current_major" ] && [ "$new_minor" -eq "$current_minor" ] && [ "$new_patch" -gt "$current_patch" ]); then
                  echo "Image version for $service has been incremented in docker-compose.yaml."
                else
                  echo "::error::Dockerfile for $service was modified but the image version in docker-compose.yaml was not correctly incremented."
                  exit 1
                fi
              else
                echo "::error::No valid image version (vX.Y.Z) found in docker-compose.yaml for $service."
                exit 1
              fi
            else
              echo "No changes to Dockerfile for $service."
            fi
          done