#!/bin/bash -e

set -euo pipefail

# based on https://github.com/yaron1m/expo-detox-typescript-example/blob/master/scripts/dl_expo_bins
APP_PATH=./bin/Exponent.app

if [ ! -d $APP_PATH ]; then
  echo "First time running Detox -- downloading Expo client app"

  # Sanity check
  if [ ! -f "package.json" ]; then
    echo "Oops - run this command from your project's root folder" >>/dev/stderr
    exit 1
  fi

  # Make the app dir (this'll also make sure we already have the bin directory)
  mkdir $APP_PATH

  # query expo.io to find most recent ipaUrl
  IPA_URL=`curl --silent --show-error https://expo.io/--/api/v2/versions | python -c 'import sys, json; print json.load(sys.stdin)["iosUrl"]'`

  # download tar.gz
  TMP_PATH=./exponent.tar.gz
  curl --silent --show-error --output $TMP_PATH $IPA_URL

  # unzip tar.gz into APP_PATH
  tar -C $APP_PATH -xzf $TMP_PATH
  rm ./exponent.tar.gz
fi