#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Personal or small business accounts
#
# License
# =======
#
# Copyright (C) 2017 Bob Mottram <bob@freedombone.net>
#
# 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/>.

VARIANTS='full full-vim media'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

AKAUNTING_DOMAIN_NAME=
AKAUNTING_CODE=
AKAUNTING_ONION_PORT=8341
AKAUNTING_REPO="https://github.com/akaunting/akaunting"
AKAUNTING_COMMIT='b68c840cded60d92b86e98fcbc26ce338cf93fef'
AKAUNTING_ADMIN_PASSWORD=

AKAUNTING_BACKGROUND_IMAGE_URL=

akaunting_variables=(ONION_ONLY
                     AKAUNTING_DOMAIN_NAME
                     AKAUNTING_CODE
                     DDNS_PROVIDER
                     MY_USERNAME)

function logging_on_akaunting {
    echo -n ''
}

function logging_off_akaunting {
    echo -n ''
}

function remove_user_akaunting {
    remove_username="$1"

    ${PROJECT_NAME}-pass -u $remove_username --rmapp akaunting
}

function add_user_akaunting {
    new_username="$1"
    new_user_password="$2"

    ${PROJECT_NAME}-pass -u $new_username -a akaunting -p "$new_user_password"

    echo '0'
}

function install_interactive_akaunting {
    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi

    if [[ $ONION_ONLY != "no" ]]; then
        AKAUNTING_DOMAIN_NAME='akaunting.local'
    else
        AKAUNTING_DETAILS_COMPLETE=
        while [ ! $AKAUNTING_DETAILS_COMPLETE ]
        do
            data=$(tempfile 2>/dev/null)
            trap "rm -f $data" 0 1 2 5 15
            if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Akaunting Configuration" \
                       --form $"\nPlease enter your Akaunting details.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 14 65 2 \
                       $"Domain:" 1 1 "$(grep 'AKAUNTING_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       $"Code:" 2 1 "$(grep 'AKAUNTING_CODE' temp.cfg | awk -F '=' '{print $2}')" 2 25 33 255 \
                       2> $data
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Akaunting Configuration" \
                       --form $"\nPlease enter your Akaunting details.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 14 65 2 \
                       $"Domain:" 1 1 "$(grep 'AKAUNTING_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       2> $data
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            AKAUNTING_DOMAIN_NAME=$(cat $data | sed -n 1p)
            if [ $AKAUNTING_DOMAIN_NAME ]; then
                if [[ $AKAUNTING_DOMAIN_NAME == "$HUBZILLA_DOMAIN_NAME" ]]; then
                    AKAUNTING_DOMAIN_NAME=""
                fi
                TEST_DOMAIN_NAME=$AKAUNTING_DOMAIN_NAME
                validate_domain_name
                if [[ $TEST_DOMAIN_NAME != $AKAUNTING_DOMAIN_NAME ]]; then
                    AKAUNTING_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        AKAUNTING_CODE=$(cat $data | sed -n 2p)
                        validate_freedns_code "$AKAUNTING_CODE"
                        if [ ! $VALID_CODE ]; then
                            AKAUNTING_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $AKAUNTING_DOMAIN_NAME ]; then
                AKAUNTING_DETAILS_COMPLETE="yes"
            fi
        done

        write_config_param "AKAUNTING_CODE" "$AKAUNTING_CODE"
    fi
    write_config_param "AKAUNTING_DOMAIN_NAME" "$AKAUNTING_DOMAIN_NAME"
    APP_INSTALLED=1
}

function change_password_akaunting {
    curr_username="$1"
    new_user_password="$2"

    read_config_param 'AKAUNTING_DOMAIN_NAME'

    ${PROJECT_NAME}-pass -u "$curr_username" -a akaunting -p "$new_user_password"
}

function akaunting_create_database {
    if [ -f $IMAGE_PASSWORD_FILE ]; then
        AKAUNTING_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
    else
        if [ ! $AKAUNTING_ADMIN_PASSWORD ]; then
            AKAUNTING_ADMIN_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
        fi
    fi
    if [ ! $AKAUNTING_ADMIN_PASSWORD ]; then
        return
    fi

    function_check create_database
    create_database akaunting "$AKAUNTING_ADMIN_PASSWORD" $MY_USERNAME
}

function reconfigure_akaunting {
    echo -n ''
}

function upgrade_akaunting {
    CURR_AKAUNTING_COMMIT=$(get_completion_param "akaunting commit")
    if [[ "$CURR_AKAUNTING_COMMIT" == "$AKAUNTING_COMMIT" ]]; then
        return
    fi

    if grep -q "akaunting domain" $COMPLETION_FILE; then
        AKAUNTING_DOMAIN_NAME=$(get_completion_param "akaunting domain")
    fi

    # update to the next commit
    function_check set_repo_commit
    set_repo_commit /var/www/$AKAUNTING_DOMAIN_NAME/htdocs "akaunting commit" "$AKAUNTING_COMMIT" $AKAUNTING_REPO

    chown -R www-data:www-data /var/www/${AKAUNTING_DOMAIN_NAME}/htdocs
}


function backup_local_akaunting {
    akaunting_path=/var/www/${AKAUNTING_DOMAIN_NAME}/htdocs
    if [ -d $akaunting_path ]; then
        suspend_site ${AKAUNTING_DOMAIN_NAME}
        function_check backup_database_to_usb
        backup_database_to_usb akaunting
        backup_directory_to_usb $akaunting_path akaunting
        restart_site
    fi
}

function restore_local_akaunting {
    temp_restore_dir=/root/tempakaunting
    akaunting_dir=/var/www/${AKAUNTING_DOMAIN_NAME}/htdocs

    suspend_site ${AKAUNTING_DOMAIN_NAME}

    function_check akaunting_create_database
    akaunting_create_database

    restore_database akaunting ${AKAUNTING_DOMAIN_NAME}
    chown www-data:www-data $akaunting_dir

    restart_site
}

function backup_remote_akaunting {
    akaunting_path=/var/www/${AKAUNTING_DOMAIN_NAME}/htdocs
    if [ -d $akaunting_path ]; then
        suspend_site ${AKAUNTING_DOMAIN_NAME}
        function_check backup_database_to_friend
        backup_database_to_friend akaunting
        backup_directory_to_friend $akaunting_path akaunting
        restart_site
    fi
}

function restore_remote_akaunting {
    temp_restore_dir=/root/tempakaunting
    akaunting_dir=/var/www/${AKAUNTING_DOMAIN_NAME}/htdocs

    suspend_site ${AKAUNTING_DOMAIN_NAME}

    function_check akaunting_create_database
    akaunting_create_database

    restore_database_from_friend akaunting ${AKAUNTING_DOMAIN_NAME}
    chown www-data:www-data $akaunting_dir

    restart_site
}

function remove_akaunting {
    if [ ${#AKAUNTING_DOMAIN_NAME} -eq 0 ]; then
        return
    fi

    read_config_param "AKAUNTING_DOMAIN_NAME"
    read_config_param "MY_USERNAME"
    echo "Removing $AKAUNTING_DOMAIN_NAME"
    nginx_dissite $AKAUNTING_DOMAIN_NAME
    remove_certs $AKAUNTING_DOMAIN_NAME

    if [ -d /var/www/$AKAUNTING_DOMAIN_NAME ]; then
        rm -rf /var/www/$AKAUNTING_DOMAIN_NAME
    fi
    if [ -f /etc/nginx/sites-available/$AKAUNTING_DOMAIN_NAME ]; then
        rm /etc/nginx/sites-available/$AKAUNTING_DOMAIN_NAME
    fi
    function_check drop_database
    drop_database akaunting
    function_check remove_onion_service
    remove_onion_service akaunting ${AKAUNTING_ONION_PORT}
    if grep -q "akaunting" /etc/crontab; then
        sed -i "/akaunting/d" /etc/crontab
    fi
    remove_app akaunting
    remove_completion_param install_akaunting
    sed -i '/akaunting/d' $COMPLETION_FILE

    function_check remove_ddns_domain
    remove_ddns_domain $AKAUNTING_DOMAIN_NAME
}

function install_akaunting {
    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi

    if [ ! $AKAUNTING_DOMAIN_NAME ]; then
        echo $'No domain name was given for akaunting'
        exit 89353
    fi

    function_check install_mariadb
    install_mariadb

    function_check get_mariadb_password
    get_mariadb_password

    apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
    apt-get -yq install memcached php-memcached php-intl exiftool libfcgi0ldbl

    if [ ! -d /var/www/$AKAUNTING_DOMAIN_NAME ]; then
        mkdir /var/www/$AKAUNTING_DOMAIN_NAME
    fi
    if [ ! -d /var/www/$AKAUNTING_DOMAIN_NAME/htdocs ]; then
        if [ -d /repos/akaunting ]; then
            mkdir /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
            cp -r -p /repos/akaunting/. /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
            cd /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
            git pull
        else
            function_check git_clone
            git_clone $AKAUNTING_REPO /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
        fi

        if [ ! -d /var/www/$AKAUNTING_DOMAIN_NAME/htdocs ]; then
            echo $'Unable to clone akaunting repo'
            exit 2589389
        fi
    fi

    cd /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
    git checkout $AKAUNTING_COMMIT -b $AKAUNTING_COMMIT
    set_completion_param "akaunting commit" "$AKAUNTING_COMMIT"

    chmod g+w /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
    chown -R www-data:www-data /var/www/$AKAUNTING_DOMAIN_NAME/htdocs

    cd /var/www/$AKAUNTING_DOMAIN_NAME/htdocs
    install_composer

    function_check akaunting_create_database
    akaunting_create_database

    function_check add_ddns_domain
    add_ddns_domain $AKAUNTING_DOMAIN_NAME

    AKAUNTING_ONION_HOSTNAME=$(add_onion_service akaunting 80 ${AKAUNTING_ONION_PORT})

    akaunting_nginx_site=/etc/nginx/sites-available/$AKAUNTING_DOMAIN_NAME
    if [[ $ONION_ONLY == "no" ]]; then
        function_check nginx_http_redirect
        nginx_http_redirect $AKAUNTING_DOMAIN_NAME "index index.php"
        echo 'server {' >> $akaunting_nginx_site
        echo '  listen 443 ssl;' >> $akaunting_nginx_site
        echo '  listen [::]:443 ssl;' >> $akaunting_nginx_site
        echo "  server_name $AKAUNTING_DOMAIN_NAME;" >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        function_check nginx_compress
        nginx_compress $AKAUNTING_DOMAIN_NAME
        echo '' >> $akaunting_nginx_site
        echo '  # Security' >> $akaunting_nginx_site
        function_check nginx_ssl
        nginx_ssl $AKAUNTING_DOMAIN_NAME

        function_check nginx_disable_sniffing
        nginx_disable_sniffing $AKAUNTING_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  access_log /dev/null;' >> $akaunting_nginx_site
        echo '  error_log /dev/null;' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo "  root /var/www/$AKAUNTING_DOMAIN_NAME/htdocs;" >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  index index.php;' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  location ~ \.php {' >> $akaunting_nginx_site
        echo '    include snippets/fastcgi-php.conf;' >> $akaunting_nginx_site
        echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;' >> $akaunting_nginx_site
        echo '    fastcgi_read_timeout 30;' >> $akaunting_nginx_site
        echo '  }' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  location / {' >> $akaunting_nginx_site
        function_check nginx_limits
        nginx_limits $AKAUNTING_DOMAIN_NAME '15m'
        echo '    try_files $uri $uri/ @akaunting;' >> $akaunting_nginx_site
        echo '  }' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  location @akaunting {' >> $akaunting_nginx_site
        echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $akaunting_nginx_site
        echo '  }' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '  location ~ /\.(ht|git) {' >> $akaunting_nginx_site
        echo '    deny all;' >> $akaunting_nginx_site
        echo '  }' >> $akaunting_nginx_site
        echo '' >> $akaunting_nginx_site
        echo '}' >> $akaunting_nginx_site
    else
        echo -n '' > $akaunting_nginx_site
    fi
    echo 'server {' >> $akaunting_nginx_site
    echo "    listen 127.0.0.1:$AKAUNTING_ONION_PORT default_server;" >> $akaunting_nginx_site
    echo "    server_name $AKAUNTING_ONION_HOSTNAME;" >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    function_check nginx_compress
    nginx_compress $AKAUNTING_DOMAIN_NAME
    echo '' >> $akaunting_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $AKAUNTING_DOMAIN_NAME
    echo '' >> $akaunting_nginx_site
    echo '  access_log /dev/null;' >> $akaunting_nginx_site
    echo '  error_log /dev/null;' >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo "  root /var/www/$AKAUNTING_DOMAIN_NAME/htdocs;" >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo '  index index.php;' >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo '  location ~ \.php {' >> $akaunting_nginx_site
    echo '    include snippets/fastcgi-php.conf;' >> $akaunting_nginx_site
    echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;' >> $akaunting_nginx_site
    echo '    fastcgi_read_timeout 30;' >> $akaunting_nginx_site
    echo '  }' >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo '  location / {' >> $akaunting_nginx_site
    function_check nginx_limits
    nginx_limits $AKAUNTING_DOMAIN_NAME '15m'
    echo '    try_files $uri $uri/ @akaunting;' >> $akaunting_nginx_site
    echo '  }' >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo '  location @akaunting {' >> $akaunting_nginx_site
    echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $akaunting_nginx_site
    echo '  }' >> $akaunting_nginx_site
    echo '' >> $akaunting_nginx_site
    echo '  location ~ /\.(ht|git) {' >> $akaunting_nginx_site
    echo '    deny all;' >> $akaunting_nginx_site
    echo '  }' >> $akaunting_nginx_site
    echo '}' >> $akaunting_nginx_site

    function_check configure_php
    configure_php

    function_check create_site_certificate
    create_site_certificate $AKAUNTING_DOMAIN_NAME 'yes'

    function_check nginx_ensite
    nginx_ensite $AKAUNTING_DOMAIN_NAME

    systemctl restart mariadb
    systemctl restart php7.0-fpm
    systemctl restart nginx

    ${PROJECT_NAME}-pass -u $MY_USERNAME -a akaunting -p "$AKAUNTING_ADMIN_PASSWORD"

    set_completion_param "akaunting domain" "$AKAUNTING_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"