action.yml

# SPDX-FileCopyrightText: Contributors to the Power Grid Model project <powergridmodel@lfenergy.org>
#
# SPDX-License-Identifier: MPL-2.0

name: Bump Version
description: Retrieve the latest release tag, run the Bash script to bump version, and save the new version to PYPI_VERSION.

inputs: # actions don't have secrets, so we use inputs instead
  token:
    description: "A Github PAT, e.g. secrets.GITHUB_TOKEN. When not provided, the action will use the default token (may hit rate limits)."

runs:
  using: "composite"
  steps:
    - name: Get Latest Release Tag
      id: fetch_tag
      uses: pozetroninc/github-action-get-latest-release@2a61c339ea7ef0a336d1daa35ef0cb1418e7676c # v0.8.0
      with:
        repository: ${{ github.repository }}
        excludes: prerelease, draft
        token: ${{ inputs.token }}

    - name: Run version bump script
      id: bump_version
      shell: bash
      run: |
        bump_version() {
          # Read the VERSION file
          target_version=$(cat VERSION)

          # Remove 'v' prefix from the latest release tag
          current_version_clean=${1#v}

          # Split the current and target versions into components
          IFS='.' read -r current_major current_minor current_patch <<< "$current_version_clean"
          IFS='.' read -r target_major target_minor <<< "$target_version"

          # Compare versions and calculate the new version
          if [[ "$current_major" -eq "$target_major" && "$current_minor" -eq "$target_minor" ]]; then
            new_patch=$((current_patch + 1))
            new_version="$current_major.$current_minor.$new_patch"
          elif [[ "$current_major" -lt "$target_major" || ("$current_major" -eq "$target_major" && "$current_minor" -lt "$target_minor") ]]; then
            new_version="$target_major.$target_minor.0"
          else
            echo "Error: Current major.minor is greater than the version in the VERSION file." >&2
            exit 1
          fi

          # handle GitHub Actions context
          sha="$GITHUB_SHA"
          ref="$GITHUB_REF"
          build_number="$GITHUB_RUN_NUMBER"

          # Convert the short hash to a numeric value
          short_hash=$(printf "%08d" $((16#${sha:0:6})))

          if [[ "$ref" == "refs/heads/main" ]]; then
            # Main branch: keep the version as is
            echo "$new_version"
          else
            # Feature branch: append alpha versioning
            echo "${new_version}a1${build_number}${short_hash}"
          fi
        }

        # Run the bump_version function with the latest tag
        new_version=$(bump_version "${{ steps.fetch_tag.outputs.release }}")
        # Save the new version to PYPI_VERSION file
        echo "$new_version" > PYPI_VERSION