#!/bin/bash
# change_es_systems.sh
#############
# This script lets you change the es_systems.cfg file used to display systems using your controllers.
#
# v4
# TMNTturtlguy - July 9 2017
#
# place script in /home/pi/RetroPie/retropiemenu/
# In order to run the script you must create the following folders:
#    /opt/retropie/configs/all/emulationstation/es_systems
# Then within that folder create these 6 folders:
#    All
#    Consoles
#    Customs
#    Favorites
#    Hacks
#    Neocapcom
# Example of the full path: /opt/retropie/configs/all/emulationstation/es_systems/Favorites
# Within each folder you have created place a es_systems.cfg file. The file needs to be named the same in each folder, but the systems can be different.
# Restart EmulationStation and the script is located in the retropie menu
# Special Thanks to @meleu and @cyperghost for their hard work helping trouble shoot this script and comming up with a way to restart ES.
#
#

#scirpt welcome screen
 dialog --backtitle "W A R N I N G !" --title " WARNING! " \
    --yesno "\nThis script lets you change your es_systems.cfg file used to display systems.  This will not change or remove any systems or content, it will change which systems are displayed based on user created es_systems.cfg files.  ES will automatically restart.\n\n\nDo you want to proceed?" \
    15 75 2>&1 > /dev/tty \
    || exit

function restart_es() {
    touch /tmp/es-restart && pkill -f "/opt/retropie/supplementary/.*/emulationstation([^.]|$)"
    exit
}

function main_menu() {
    local choice

    while true; do
        choice=$(dialog --backtitle "$BACKTITLE" --title " MAIN MENU " \
            --ok-label OK --cancel-label Exit \
            --menu "What do you want to do?" 17 75 10 \
            B "Run roms from NAS" \
            E "Run roms from SD/USB" \
            2>&1 > /dev/tty)

        case "$choice" in
            B)  change_to_nas ;;
            E)  change_to_sd ;;
            *)  break ;;
        esac
    done
}


function change_to_nas() {
    rm /opt/retropie/configs/all/emulationstation/es_systems.cfg
    cp /opt/retropie/configs/all/emulationstation/es_systems/NAS/es_systems.cfg /opt/retropie/configs/all/emulationstation/
    restart_es
}

function change_to_sd() {
    rm /opt/retropie/configs/all/emulationstation/es_systems.cfg
    cp /opt/retropie/configs/all/emulationstation/es_systems/SD/es_systems.cfg /opt/retropie/configs/all/emulationstation/
    restart_es
}

# START HERE #################################################################

main_menu