name: Create Tag
description: Auto-increment and create a version tag

inputs:
  prefix:
    description: Tag prefix (e.g., 'v', 'myapp-v')
    default: 'v'
  token:
    description: Token for pushing tags
    default: ${{ github.token }}

outputs:
  tag:
    description: The created tag name
    value: ${{ steps.version.outputs.tag }}
  version:
    description: The version number without prefix
    value: ${{ steps.version.outputs.version }}

runs:
  using: composite
  steps:
    - id: version
      shell: bash
      run: |
        PREFIX="${{ inputs.prefix }}"

        # Find latest tag with this prefix
        LATEST_TAG=$(git tag -l "${PREFIX}*" | sort -V | tail -1)

        if [ -z "$LATEST_TAG" ]; then
          NEXT_VERSION="${PREFIX}1.0.0"
        else
          # Extract version and increment patch
          CURRENT_VERSION=${LATEST_TAG#$PREFIX}
          IFS='.' read -r MAJOR MINOR PATCH <<< "$CURRENT_VERSION"
          NEXT_VERSION="${PREFIX}${MAJOR}.${MINOR}.$((PATCH + 1))"
        fi

        echo "tag=$NEXT_VERSION" >> $GITHUB_OUTPUT
        echo "version=${NEXT_VERSION#$PREFIX}" >> $GITHUB_OUTPUT

        # Configure git and create tag
        git config user.name forgejo-actions
        git config user.email forgejo-actions@code.flowmade.one
        git tag "$NEXT_VERSION"

        # Push tag using token
        git push "https://oauth2:${{ inputs.token }}@code.flowmade.one/${{ github.repository }}.git" "$NEXT_VERSION"