#!/usr/bin/env bash

# Compare licenses of Go dependencies against a whitelist.

###### script header ######

lib=$(realpath @@BASE_LIB@@) || exit 1
stat "${lib}" >> /dev/null || exit 1

# shellcheck source=../sh/lib.bash
if ! source "${lib}"; then
  echo "Error: could not find import"
  exit 1
fi

go=$(realpath @@GO@@)
stat "${go}" >> /dev/null
golicenses=$(realpath @@GO_LICENSES@@)
stat "${golicenses}" >> /dev/null

cd "${BUILD_WORKSPACE_DIRECTORY}"

###### script body ######

not_allowed() {
  echo "license not allowed for package: ${line}"
  err=1
}

${go} mod download

err=0

PATH="$(dirname "${go}"):${PATH}" \
GOROOT=$(${go} env GOROOT) \
GOPATH=$(${go} env GOPATH) \
GOCACHE=$(${go} env GOCACHE) \
  ${golicenses} csv ./... | {
  while read -r line; do

    pkg=${line%%,*}
    lic=${line##*,}

    case ${lic} in
    Apache-2.0 | BSD-2-Clause | BSD-3-Clause | ISC | MIT) ;;

    MPL-2.0)
      case ${pkg} in
      github.com/siderolabs/talos/pkg/machinery/config/encoder) ;;

      github.com/letsencrypt/boulder) ;;

      github.com/hashicorp/*) ;;

      *)
        not_allowed
        ;;
      esac
      ;;

    AGPL-3.0)
      case ${pkg} in
      github.com/edgelesssys/constellation/v2) ;;

      github.com/edgelesssys/constellation/v2/operators/constellation-node-operator/v2/api/v1alpha1) ;;

      *)
        not_allowed
        ;;
      esac
      ;;

    Unknown)
      case ${pkg} in
      github.com/edgelesssys/go-tdx-qpl/*) ;;

      *)
        not_allowed
        ;;
      esac
      ;;

    *)
      echo "unknown license: ${line}"
      err=1
      ;;
    esac

  done
  exit "${err}"
}