.github/workflows/classify.yml

name: Go Build

on:
  workflow_call:
    inputs:
      file_to_classify:
        description: 'The file to run the license classifier against'
        required: true
        type: string
    outputs:
      license_name:
        description: "The name of the license found"
        value: ${{ jobs.build.outputs.license_name }}

jobs:
  build:
    runs-on: ubuntu-latest
    outputs:
      license_name: ${{ steps.classify.outputs.license_name }}
    steps:
    - uses: actions/checkout@v3
      with:
        repository: google/licenseclassifier

    - name: Set up Go
      uses: actions/setup-go@v4
      with:
        go-version: '1.21'

    - name: Cache generated licenses
      id: cache-licenses
      uses: actions/cache@v3
      with:
        path: licenses
        key: ${{ runner.os }}-licenses-${{ hashFiles('tools/license_serializer/license_serializer.go', 'licenses/**/*.txt') }}

    - name: Run license serializer
      if: steps.cache-licenses.outputs.cache-hit != 'true'
      run: go run tools/license_serializer/license_serializer.go -output licenses

    - name: Run license classifier
      id: classify
      run: |
        output=$(go run tools/identify_license/identify_license.go ${INPUTS_FILE_TO_CLASSIFY})
        if [[ "$output" == *"no license found"* ]]; then
          license_name="unknown"
        else
          license_name=$(echo "$output" | cut -d':' -f2 | cut -d'(' -f1 | xargs)
        fi
        echo "license_name=$license_name" >> $GITHUB_OUTPUT
      env:
        INPUTS_FILE_TO_CLASSIFY: ${{ inputs.file_to_classify }}