name: Check licenses
on:
  push:
    branches: [main]
    paths:
      - "**.go"
      - "**/go.mod"
  pull_request:
    paths:
      - "**.go"
      - "**/go.mod"

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Setup Go environment
        uses: actions/setup-go@268d8c0ca0432bb2cf416faae41297df9d262d7f
        with:
          go-version: "1.19.1"
          cache: true

      - name: Install go-licenses
        run: go install github.com/google/go-licenses@latest

      - name: Check licenses
        run: hack/check-licenses.sh

      - name: Check for files without license header
        run: "! grep -rL --include='*.go' -e'SPDX-License-Identifier: AGPL-3.0-only' -e'DO NOT EDIT'"