#!/bin/bash

set -eu

file_env() {
  local var="$1"
  local fileVar="${var}_FILE"
  local def="${2:-}"

  if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
    echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
    exit 1
  fi

  local val="$def"
  if [ "${!var:-}" ]; then
    val="${!var}" elif [ "${!fileVar:-}" ]; then
    val="$(< "${!fileVar}")"
  fi

  export "$var"="$val"
  unset "$fileVar"
}

load_vars() {
  file_env "SECRET_KEY_BASE"
  file_env "SMTP_PASSWORD"
}

reuse() {
  if [ -f tmp/pids/server.pid ]; then
    rm tmp/pids/server.pid
  fi
}

db_setup() {
  rake db:setup
}

reuse
load_vars
db_setup
exec "$@"