Open DeepLink helper for testing apps

openDeepLink.sh

#!/bin/sh

# USAGE (make sure to use quotes when setting URI)
# ./openDeepLink.sh -u "your://deeplink?with=some_param&another=param"
# When using an Android emulator, use "-e" option
# ./openDeepLink.sh -e -u "your://deeplink"
# For iOS, use "-i" option
#./openDeepLink.sh -i -u "your://ios?deeplink=here"

while getopts "ieu:" opt; do
    case ${opt} in
      i) arg_ios="1" ;;
      e) arg_emulator="1" ;;
      u) arg_uri="$OPTARG" ;;
      \?) echo "Invalid option -$OPTARG" >&2; exit ;;
    esac
  done

deepLink () {

    if [ -z  "${arg_emulator}" ]; then
      emulator=""
    else
      emulator="-s emulator-5554"
    fi

    if [ -z  "${arg_uri}" ]; then
      #### CHANGE THIS! ####
      uri="yourscheme://your-default-hostname"
    else
      uri=${arg_uri}
    fi

    if [ -z "${arg_ios}" ]; then
      # shellcheck disable=SC2086
      adb ${emulator} shell am start -a 'android.intent.action.VIEW' -d "\"${uri}\""
    else
      xcrun simctl openurl booted "${uri}"
    fi

}

deepLink

If you just have one function you don't need to hard code it.
The shell allows you to use the $@. It's a bit smarter.