# Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license

name: "Setup uv"
description: "Install uv and activate a venv on the newest preinstalled runner Python"
inputs:
  python-version:
    description: "Python version for uv commands (default: newest preinstalled runner Python)"
    required: false
    default: ""
  activate-environment:
    description: "Create and activate a venv in the runner temp directory"
    required: false
    default: "true"
  enable-cache:
    description: "Cache uv downloads between workflow runs"
    required: false
    default: "false"
  ignore-empty-workdir:
    description: "Suppress the warning when the working directory is intentionally empty"
    required: false
    default: "false"

runs:
  using: "composite"
  steps:
    - name: Use preinstalled Python
      if: inputs.activate-environment == 'true' || inputs.python-version != ''
      shell: bash
      env:
        PYTHON_VERSION: ${{ inputs.python-version }}
      run: |
        # Put the newest matching tool cache Python on PATH so uv uses it instead of downloading one
        dir=$(printf '%s\n' "$RUNNER_TOOL_CACHE/Python/${PYTHON_VERSION:-3}".*/*64 | sort -V | tail -1)
        if [ -d "$dir/bin" ]; then echo "$dir/bin" >> "$GITHUB_PATH"; elif [ -d "$dir" ]; then echo "$dir" >> "$GITHUB_PATH"; fi

    - name: Install latest uv
      id: latest
      continue-on-error: true
      uses: astral-sh/setup-uv@v10.2.0
      with:
        version: latest
        python-version: ${{ inputs.python-version }}
        activate-environment: ${{ inputs.activate-environment }}
        venv-path: ${{ runner.temp }}/.venv
        enable-cache: ${{ inputs.enable-cache }}
        ignore-empty-workdir: ${{ inputs.ignore-empty-workdir }}
        ignore-nothing-to-cache: true

    - name: Install latest known uv
      if: steps.latest.outcome == 'failure'
      uses: astral-sh/setup-uv@v10.2.0
      with:
        version: latest-known
        python-version: ${{ inputs.python-version }}
        activate-environment: ${{ inputs.activate-environment }}
        venv-path: ${{ runner.temp }}/.venv
        enable-cache: ${{ inputs.enable-cache }}
        ignore-empty-workdir: ${{ inputs.ignore-empty-workdir }}
        ignore-nothing-to-cache: true