# Stolen from
# https://github.com/joshuaclayton/dotfiles/blob/master/zsh_profile.d/autoenv.zsh

export ENV_AUTHORIZATION_FILE=$HOME/.env_auth

_dotenv_hash_pair() {
  local env_file=$1
  env_shasum=$(shasum $env_file | cut -d' ' -f1)
  echo "$env_file:$env_shasum"
}

_dotenv_authorized_env_file() {
  local env_file=$1
  local pair=$(_dotenv_hash_pair $env_file)
  touch $ENV_AUTHORIZATION_FILE
  \grep -Gq $pair $ENV_AUTHORIZATION_FILE
}

_dotenv_authorize() {
  local env_file=$1
  _dotenv_deauthorize $env_file
  _dotenv_hash_pair $env_file >> $ENV_AUTHORIZATION_FILE
}

_dotenv_deauthorize() {
  local env_file=$1
  echo $(\grep -Gv $env_file $ENV_AUTHORIZATION_FILE) > $ENV_AUTHORIZATION_FILE
}

_dotenv_print_unauthorized_message() {
  echo "Attempting to load unauthorized env: $1"
  echo ""
  echo "**********************************************"
  echo ""
  cat $1
  echo ""
  echo "**********************************************"
  echo ""
  echo "Would you like to authorize it? (y/n)"
}

# This function can be mocked in tests
_dotenv_read_answer() {
  read answer
}

_dotenv_source_env() {
  local env_file="$PWD/.env"

  if [[ -f $env_file ]]
  then
    if _dotenv_authorized_env_file $env_file
    then
      source $env_file
      return 0
    fi

    _dotenv_print_unauthorized_message $env_file

    _dotenv_read_answer

    if [[ $answer == 'y' ]]
    then
      _dotenv_authorize $env_file
      source $env_file
    fi
  fi
}

chpwd_functions=($chpwd_functions _dotenv_source_env)