#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Add or remove apps
#
# License
# =======
#
# Copyright (C) 2015-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

PROJECT_NAME='freedombone'

export TEXTDOMAIN=${PROJECT_NAME}-addremove
export TEXTDOMAINDIR="/usr/share/locale"

PROJECT_INSTALL_DIR=/usr/local/bin
if [ -f /usr/bin/${PROJECT_NAME} ]; then
    PROJECT_INSTALL_DIR=/usr/bin
fi

source $PROJECT_INSTALL_DIR/${PROJECT_NAME}-vars

COMPLETION_FILE=$HOME/${PROJECT_NAME}-completed.txt
CONFIGURATION_FILE=$HOME/${PROJECT_NAME}.cfg

UTILS_FILES=/usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-*
for f in $UTILS_FILES
do
  source $f
done

APP_FILES=/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-*
for f in $APP_FILES
do
  source $f
done

function show_apps {
    applist=""
    n=1
    app_index=0
    for a in "${APPS_AVAILABLE[@]}"
    do
        if [[ ${APPS_INSTALLED[$app_index]} == "0" ]]; then
            applist="$applist $n $a off"
        else
            applist="$applist $n $a on"
        fi
        n=$[n+1]
        app_index=$[app_index+1]
    done

    choices=$(dialog --stdout --backtitle $"Freedombone" \
                     --title $"Add/Remove Applications" \
                     --checklist $'Choose:' \
                     27 40 20 $applist)

    if [ $? -eq 0 ]; then
        for choice in $choices
        do
            app_index=$[choice-1]
            APPS_CHOSEN[$app_index]="1"
        done
    else
        exit 0
    fi
}

function remove_apps_interactive {
    # which apps need to be removed?
    removals=""
    app_index=0
    n=0
    for a in "${APPS_INSTALLED[@]}"
    do
        if [[ ${APPS_INSTALLED[$app_index]} == "1" ]]; then
            if [[ ${APPS_CHOSEN[$app_index]} == "0" ]]; then
                if [ ${n} -gt 0 ]; then
                    removals="$removals ${APPS_AVAILABLE[$app_index]}"
                else
                    removals="${APPS_AVAILABLE[$app_index]}"
                fi
                n=$[n+1]
            fi
        fi
        app_index=$[app_index+1]
    done

    # if no apps to be removed then don't do anything
    if [ ${n} -eq 0 ]; then
        return
    fi

    # ask for confirmation
    dialog --title $"Remove applications" \
           --backtitle $"Freedombone" \
           --defaultno \
           --yesno $"\nYou have chosen to remove $n apps.\n\n    $removals\n\nIf you choose 'yes' then this will remove both the applications and their data/messages. If you don't have a backup then you will not be able to recover the data for these applications.\n\nAre you sure that you wish to continue?" 15 60
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac

    # remove the apps
    read_configuration
    remove_apps
}

function install_apps_interactive {
    # which apps need to be installed?
    installs=""
    app_index=0
    n=0
    for a in "${APPS_INSTALLED[@]}"
    do
        if [[ ${APPS_INSTALLED[$app_index]} == "0" ]]; then
            if [[ ${APPS_CHOSEN[$app_index]} == "1" ]]; then
                if [ ${n} -gt 0 ]; then
                    installs="$installs ${APPS_AVAILABLE[$app_index]}"
                else
                    installs="${APPS_AVAILABLE[$app_index]}"
                fi
                n=$[n+1]
            fi
        fi
        app_index=$[app_index+1]
    done

    # if no apps to be installed then don't do anything
    if [ ${n} -eq 0 ]; then
        return
    fi

    # ask for confirmation
    dialog --title $"Remove applications" \
           --backtitle $"Freedombone" \
           --defaultno \
           --yesno $"\nYou have chosen to install $n apps.\n\n    $installs\n\nIf you choose 'yes' then these will now be installed.\n\nAre you sure that you wish to continue?" 15 60
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac

    # install the apps
    read_configuration
    install_apps interactive
}

${PROJECT_NAME}-tests
if [ ! "$?" = "0" ]; then
    exit 2
fi

detect_installable_apps

# if no applications were found
if [[ ${#APPS_AVAILABLE[@]} == 0 ]]; then
    exit 1
fi

show_apps

clear

remove_apps_interactive
install_apps_interactive

exit 0