#!/bin/bash
MAX_OPENRC_LEN=100
read -p "Pre-store Keystone user credentials for this session? (y/N): " confirm
confirm=${confirm,,}

if [ "$confirm" == "y" ] || [ "$confirm" = "yes" ]; then
  if [ -z "$OPENRC_TEMPLATE" ] || [ ! -f `echo $OPENRC_TEMPLATE` ]; then 
    read -p "env[OPENRC_TEMPLATE] not set.
Hints will not be available for certain options. Continue anyways? (Y/n): " confirm
    confirm=${confirm,,}
    ([ "$confirm" == "n" ] || [ "$confirm" == "no" ]) && exit 0
  else
    # Check if we are to run Muted
    [ "$1" = "--mute" ] && MUTE=1

    # Load default values for System URL, Region and Keystone URL  
    defEnv=( $(cat $OPENRC_TEMPLATE) )
    defEnvLen=${#defEnv[@]}
    [ "$defEnvLen" -gt "$MAX_OPENRC_LEN" ] && \
     defEnvLen="$MAX_OPENRC_LEN"
    for (( i=0; i<$defEnvLen; i++));
    do
      if [[ ${defEnv[$i]} =~ OS_AUTH_URL=(.*)$ ]]; then
	def_os_auth_url=${BASH_REMATCH[1]}
      elif [[ ${defEnv[$i]} =~ OS_REGION_NAME=(.*)$ ]]; then
        def_os_region_name=${BASH_REMATCH[1]}
      elif [[ ${defEnv[$i]} =~ OS_PROJECT_NAME=(.*)$ ]]; then
        def_os_project_name=${BASH_REMATCH[1]}
      elif [[ ${defEnv[$i]} =~ OS_USER_DOMAIN_NAME=(.*)$ ]]; then
        def_os_user_domain_name=${BASH_REMATCH[1]}
      elif [[ ${defEnv[$i]} =~ OS_PROJECT_DOMAIN_NAME=(.*)$ ]]; then
        def_os_project_domain_name=${BASH_REMATCH[1]}
      fi
    done
  fi

  read -p "Enter Keystone username [$USER]: " os_user
  [ -z "$os_user" ] && os_user="$USER"

  read -p "Enter Keystone user domain name: " os_user_domain_name
  [ -z "$os_user_domain_name" ] && os_user_domain_name="$def_os_user_domain_name"

  read -p "Enter Project name: " os_project_name
  [ -z "$os_project_name" ] && os_project_name="$def_os_project_name"

  read -p "Enter Project domain name: " os_project_domain_name
  [ -z "$os_project_domain_name" ] && os_project_domain_name="$def_os_project_domain_name"

  read -s -p "Enter Keystone password: " os_pass
  [ -z "$os_pass" ] && \
   echo -n "Invalid password entry. Aborting!" && exit 1 

  # if we are not in mute mode then ask for these
  # from user as input 
  if [ -z "$MUTE" ]; then
    if [ -z "$def_os_region_name" ]; then
      read -p "\n\nEnter Keystone Region Name: " os_region 
    else
      read -p "Enter Keystone Region Name [$def_os_region_name]: " os_region
      [ -z "$os_region" ] && os_region="$def_os_region_name"
    fi
  
    if [ -z "$def_os_auth_url" ]; then
      read -p "Enter Keystone Authentication URL: " os_auth_url
    else
      read -p "Enter Keystone Authentication URL [$def_os_auth_url]: " os_auth_url
      [ -z "$os_auth_url" ] && os_auth_url="$def_os_auth_url"
    fi
  else
    # In MUTE mode
    os_region="$def_os_region_name"
    echo ""; echo "" 
    echo "Using default Openstack Region Name: $os_region"
    os_auth_url="$def_os_auth_url"
    echo "Using default Openstack Authentication URL: $os_auth_url"
    echo "To set these to non-default, run \"source ~/$(basename $BASH_SOURCE)\" in your shell"
  fi

  
  # set user environment which will be valid for
  # the duration of this session
  # Since lshell is running for internal clients
  # move OS ENDPOINT TYPE to internalURL
  export OS_ENDPOINT_TYPE="internalURL"
  export CINDER_ENDPOINT_TYPE="internalURL"
  export OS_INTERFACE="internal"
  export OS_USERNAME="$os_user"
  export OS_PASSWORD="$os_pass"
  export OS_PROJECT_NAME="$os_project_name"
  export OS_USER_DOMAIN_NAME="$os_user_domain_name"
  export OS_PROJECT_DOMAIN_NAME="$os_project_domain_name"
  export OS_AUTH_URL="$os_auth_url"
  export OS_IDENTITY_API_VERSION=3
  export OS_REGION_NAME="$os_region"
  # modify PS1 prompt
  newprompt="[\u@\h \W($os_user)]\$ "
  export PS1="$newprompt"
  echo ""
  echo "Keystone credentials preloaded!"
fi