#!/bin/bash

# NextCloudPi software configuration
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# Usage:
#   sudo ncp-config
#
# More at https://ownyourbits.com/2017/03/13/nextcloudpi-gets-nextcloudpi-config/
#

BINDIR=/usr/local/bin/ncp

source /usr/local/etc/library.sh
{
  ncpversion="$(cat /usr/local/etc/ncp-version)"
  chlogfile=/usr/local/etc/ncp-changelog
  # ask for update if outdated
  ncp-test-updates 2>/dev/null && {
    [[ -f "$chlogfile" ]] && changelog=$( head -4 "$chlogfile" )

    latest_ver="$(cat /var/run/.ncp-latest-version 2>/dev/null)"
    whiptail --backtitle "$backtitle $ncpversion" \
             --title "NextCloudPi update available" \
             --clear --yesno "Update to $latest_ver?\n\n$changelog" \
             15 70

    [[ $? -eq $dialog_ok ]] && ncp-update
  }

function generate_list()
{
  local dir="$1"
  unset list
  for item in "$dir"/*; do

    # directories
    [[ -d "$item" ]] && {
      local dir="$( basename "$item" )"
      list+=("  $dir" "")
      continue
    }

    [[ "$item" =~ ".sh" ]] || continue

    # regular ncp_apps
    local app="$( basename "$item" .sh )"
    local cfg="$cfgdir/$app".cfg

    [[ -f "$cfg" ]] && local desc=$( jq -r .description "$cfg" ) || local desc="No description."
    is_active_app "$app" "$dir" && local on="*" || local on=" "

    list+=( "$on $app" "$desc" )
  done
}

function config_menu()
{
  local dir="$1"
  local backtitle="NextCloudPi configuration ver. "
  local ncpversion="$(cat /usr/local/etc/ncp-version  )"
  local cfgdir=/usr/local/etc/ncp-config.d
  local dialog_ok=0
  local desc cfg ncp_app

  while true; do

    # menu items
    generate_list "$dir"

    # launch the selection menu
    [[ "$dir" == "$BINDIR" ]] && local cancel_btn="Finish" || local cancel_btn="Back"
    ncp_app=$( whiptail --backtitle "$backtitle $ncpversion" \
                       --title "NextCloudPi Configuration Tool (ncp-config)" \
                       --cancel-button $cancel_btn --ok-button Select \
                       --menu "Select ncp-app to configure or activate:" 20 105 10 \
                       "${list[@]}" \
              3>&1 1>&2 2>&3 )

    [[ $? -ne $dialog_ok ]] || [[ "$ncp_app" == "" ]] && {
      [[ "$dir" == "$BINDIR" ]] && return 0
      dir="$(dirname "$dir")"
      continue
    }

    # remove * and spaces
    ncp_app=$( sed  's=*\| ==g' <<< "$ncp_app" )

    # directory selection
    [[ -d "$dir/$ncp_app" ]] && {
      dir="$dir/$ncp_app"
      config_menu "$dir"
      return
    }

    # launch selected ncp_app
    info_app      "$ncp_app" || continue
    configure_app "$ncp_app" && \
    run_app       "$ncp_app"
    echo "Done. Press any key..."
    read -r
  done
}

if [[ ${EUID} -ne 0 ]]; then
  printf "Must be run as root. Try 'sudo $( basename "$0" )'\n"
  exit 1
fi

config_menu "$BINDIR"

exit $?
} # force to read the whole thing into memory, as its contents might change in update.sh

# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA  02111-1307  USA