licensesearch.yml

name: LicenseSearch

on:
  workflow_call:
    inputs:
      commits:
        required: true
        type: string
    outputs:
      results:
        description: "all results"
        value: ${{ jobs.combine_results.outputs.results }}
      filtered_results:
        description: "actual found licenses"
        value: ${{ jobs.combine_results.outputs.filtered_results }}

jobs:
  check_commits:
    if: ${{ inputs.commits != '' }}

    runs-on: ubuntu-latest

    continue-on-error: true

    strategy:
      matrix:
        value: ${{ fromJSON(inputs.commits) }}

    outputs:
      license_lines: ${{ steps.process-files.outputs.license_lines }}

    steps:
      - name: Store commit
        id: store_commit
        run: |
          COMMIT=${{ matrix.value.id }}
          echo "commit=$COMMIT" >> $GITHUB_OUTPUT

      - name: Checkout commit and parent commit
        uses: actions/checkout@v4
        with:
          fetch-depth: 2
          ref: "${{ steps.store_commit.outputs.commit }}"

      - name: Get changed files
        id: changed-files
        run: |
            echo "Getting changed files"
            CHANGED_FILES=$(git diff --name-only HEAD^ HEAD | xargs)
            for file in $CHANGED_FILES; do
                echo "'$file' was changed"
            done
            echo "changed_files=$CHANGED_FILES" >> $GITHUB_OUTPUT

      - name: Process changed files
        id: process-files
        run: |
            LICENSE_LINES=''
            for file in ${{ steps.changed-files.outputs.changed_files }}; do
              echo "Processing '$file'..."
              LICENSE_MATCH=$(cat $file | grep -Pzo '(<|")licensee("| )(\n|.)*?(("|<)key("|>)|("|<)signature("|>))(\n|.)*?(("|<)key("|>)|("|<)signature("|>))(\n|.)*?(}|</licensee>)' | xargs)
              if [ -z "$LICENSE_MATCH" ]; then
                echo "...no licenses found"
              else
                echo "license found!"
                LICENSE_LINENO=$(cat $file | grep -Pno '(<|")licensee("| )')
                LICENSE_LINE="<$file>
                $LICENSE_LINENO
                "
                LICENSE_LINES="$LICENSE_LINES
                $LICENSE_LINE"
              fi
            done
            {
                echo 'license_lines<<EOF'
                echo "${LICENSE_LINES}"
                echo EOF
            } >> $GITHUB_OUTPUT

      - name: Create json with result
        run: |
          jq -cn  --arg commit ${{ steps.store_commit.outputs.commit }} --arg licenselines "${{ steps.process-files.outputs.license_lines }}" '$ARGS.named' > result

      - name: Random Number Generator
        id: random-number-generator
        run: echo "random-number=$(echo $RANDOM)" >> $GITHUB_OUTPUT
        shell: bash
      
      - name: Upload result
        uses: actions/upload-artifact@v4
        with:
          name: "result-${{ steps.random-number-generator.outputs.random-number }}"
          path: result


  combine_results:
    needs: check_commits
    
    runs-on: ubuntu-latest
    
    continue-on-error: true

    outputs:
      results: ${{ steps.read_results.outputs.results }}
      filtered_results: ${{ steps.filter_results.outputs.filtered_results }}

    steps:
      - name: Download results
        uses: actions/download-artifact@v4

      - name: Read results file
        id: read_results
        run: |
          results="$(cat */result | jq -c --slurp .)"
          echo results=$results >> $GITHUB_OUTPUT

      - name: Filter results
        id: filter_results
        run: |
          filtered_results="$(jq -n --argjson data '${{ steps.read_results.outputs.results }}' '$data[] | select(.licenselines != "")')"
          echo filtered_results=$filtered_results >> $GITHUB_OUTPUT