action.yml

name: Stacklit Index
description: Keep your AI-agent codebase index (stacklit.json + DEPENDENCIES.md) up to date automatically.

inputs:
  mode:
    description: "'auto-commit' to commit changes, 'check' to fail if index is stale"
    required: false
    default: auto-commit
  version:
    description: Stacklit version to install (e.g. v0.3.0 or latest)
    required: false
    default: latest
  args:
    description: Extra arguments to pass to stacklit generate
    required: false
    default: ""

runs:
  using: composite
  steps:
    - name: Install Stacklit
      shell: bash
      run: |
        set -euo pipefail
        VERSION="${{ inputs.version }}"
        if [ "$VERSION" = "latest" ]; then
          VERSION=$(curl -fsSL https://api.github.com/repos/glincker/stacklit/releases/latest | grep '"tag_name"' | sed 's/.*"tag_name": *"\([^"]*\)".*/\1/')
        fi
        if [ -z "$VERSION" ]; then
          echo "::error::Failed to resolve Stacklit version"
          exit 1
        fi
        echo "Installing stacklit $VERSION"
        VNUM="${VERSION#v}"
        curl -fsSL "https://github.com/glincker/stacklit/releases/download/${VERSION}/stacklit_${VNUM}_linux_amd64.tar.gz" -o /tmp/stacklit.tar.gz
        tar -xzf /tmp/stacklit.tar.gz -C /usr/local/bin stacklit
        chmod +x /usr/local/bin/stacklit
        stacklit --version

    - name: Run stacklit generate
      shell: bash
      run: |
        set -euo pipefail
        stacklit generate --quiet "${{ inputs.args }}"

    - name: Check for index changes (check mode)
      if: inputs.mode == 'check'
      shell: bash
      run: |
        set -euo pipefail
        if ! git diff --quiet -- stacklit.json DEPENDENCIES.md; then
          echo "::error::stacklit index is stale. Run 'stacklit generate' and commit the changes."
          git diff -- stacklit.json DEPENDENCIES.md
          exit 1
        fi
        echo "stacklit index is up to date."

    - name: Commit updated index (auto-commit mode)
      if: inputs.mode == 'auto-commit'
      shell: bash
      run: |
        set -euo pipefail
        if git diff --quiet -- stacklit.json DEPENDENCIES.md; then
          echo "No changes to stacklit index."
          exit 0
        fi
        git config user.name "github-actions[bot]"
        git config user.email "github-actions[bot]@users.noreply.github.com"
        git add stacklit.json DEPENDENCIES.md
        git commit -m "chore: update stacklit index"
        git push || { echo "::error::Failed to push stacklit index updates"; exit 1; }