#!/usr/bin/env bash

set -e
# Usage: parse_mongo_url URL
# It sets the following variables:
# MONGO_HOST
# MONGO_PORT
# MONGO_DATABASE
# MONGO_USER
# MONGO_PASSWORD
function parse_mongo_url {
  local MONGO_URL="$1"

  local AUTH
  local HOST_PORT
  local PROTO
  local URL

  PROTO="$(echo ${MONGO_URL} | grep :// | sed -e's,^\(.*://\).*,\1,g')"
  URL="${MONGO_URL/${PROTO}/}"

  AUTH="$(echo ${URL} | grep @ | rev | cut -d@ -f2- | rev)"
  if [ -n ${AUTH} ]; then
    URL="$(echo ${URL} | rev | cut -d@ -f1 | rev)"
  fi

  MONGO_PASSWORD="$(echo ${AUTH} | grep : | cut -d: -f2-)"
  if [ -n "${MONGO_PASSWORD}" ]; then
    MONGO_USER="$(echo ${AUTH} | grep : | cut -d: -f1)"
  else
    MONGO_USER=${AUTH}
  fi

  HOST_PORT="$(echo ${URL} | cut -d/ -f1)"
  MONGO_PORT="$(echo ${HOST_PORT} | grep : | cut -d: -f2)"
  if [ -n "${MONGO_PORT}" ]; then
    MONGO_HOST="$(echo ${HOST_PORT} | grep : | cut -d: -f1)"
  else
    MONGO_PORT=27017
    MONGO_HOST="${HOST_PORT}"
  fi

  MONGO_DATABASE="$(echo ${URL} | grep / | cut -d/ -f2-)"
}