#!/usr/bin/env bash

# This script checks if the pseudo-version tool hashes are up-to-date.

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

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

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

declare -A pseudo_version_tools
pseudo_version_tools["darwin_amd64"]="$(realpath @@PSEUDO_VERSION_darwin_amd64@@)"
pseudo_version_tools["darwin_arm64"]="$(realpath @@PSEUDO_VERSION_darwin_arm64@@)"
pseudo_version_tools["linux_amd64"]="$(realpath @@PSEUDO_VERSION_linux_amd64@@)"
pseudo_version_tools["linux_arm64"]="$(realpath @@PSEUDO_VERSION_linux_arm64@@)"

cd "${BUILD_WORKING_DIRECTORY}"

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

platforms=(
  darwin_amd64
  darwin_arm64
  linux_amd64
  linux_arm64
)

for platform in "${platforms[@]}"; do
  computed_hash=$(shasum -a 256 "${pseudo_version_tools[$platform]}" | cut -d' ' -f1)
  # compare hash to saved hash in ${BUILD_WORKSPACE_DIRECTORY}/tools/pseudo_version_${platform}.sha256
  saved_hash=$(cat "${BUILD_WORKSPACE_DIRECTORY}/tools/pseudo_version_${platform}.sha256")
  if [[ ${computed_hash} != "${saved_hash}" ]]; then
    echo "Error: pseudo-version tool hash for ${platform} does not match saved hash"
    echo "Computed hash: ${computed_hash}"
    echo "Saved hash: ${saved_hash}"
    exit 1
  fi
done