#!/bin/bash -e -o pipefail

# Select any Xamarin SDK versions as the default ones independently by specifying only those versions that need to be changed.
# Examples:
# 1. Change all versions: $VM_ASSETS/select-xamarin-sdkv-v2.sh --mono=6.12 --ios=14.8 --android=10.2 --mac=7.8
# 2. Change default Mono and iOS only: $VM_ASSETS/select-xamarin-sdkv-v2.sh --mono=6.12 --ios=14.8
# 3. Change default Android only: $VM_ASSETS/select-xamarin-sdkv-v2.sh --android=11.1

get_framework_path() {
  case $1 in
  --mono) echo '/Library/Frameworks/Mono.framework/Versions' ;;
  --ios) echo '/Library/Frameworks/Xamarin.iOS.framework/Versions' ;;
  --android) echo '/Library/Frameworks/Xamarin.Android.framework/Versions' ;;
  --mac) echo '/Library/Frameworks/Xamarin.Mac.framework/Versions' ;;
  *) ;;
  esac
}

change_framework_version() {
  local framework=$1
  local version=$2

  echo "Select $framework $version"

  local countDigit=$(echo "${version}" | grep -o "\." | grep -c "\.")

  if [[ countDigit -gt 1 ]]; then
    echo "[WARNING] It is not recommended to specify the exact framework version because your build can be broken with the next patch update. Consider using "major.minor" only format."
  fi

  local framework_path=$(get_framework_path "$framework")

  if [ -d "${framework_path}/${version}" ]; then
    sudo rm -f ${framework_path}/Current
    sudo ln -s "${framework_path}/${version}" "${framework_path}/Current"
  else
    echo "Invalid framework version ${framework_path}/${version}"
    exit 1
  fi
}

for arg in "$@"; do
  key=$(echo $arg | cut -f1 -d=)
  value=$(echo $arg | cut -f2 -d=)

  case $key in
  --mono | --ios | --android | --mac) change_framework_version $key $value ;;
  *)
  echo "Invalid parameter <${key}>"
  exit 1
  ;;
  esac
done