#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Webmail application
#
# License
# =======
#
# Copyright (C) 2014-2016 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=''

IN_DEFAULT_INSTALL=0

WEBMAIL_REPO="https://github.com/roundcube/roundcubemail"
WEBMAIL_COMMIT='78cf9c2e5cff2d78cd8beb647d60570f195a2a9c'
WEBMAIL_ONION_HOSTNAME=
WEBMAIL_ONION_PORT=8097
WEBMAIL_ADMIN_PASSWORD=
WEB_PATH=/var/www
WEBMAIL_PATH=$WEB_PATH/webmail

webmail_variables=(WEBMAIL_REPO
                   WEBMAIL_COMMIT
                   MY_USERNAME
                   ONION_ONLY
                   DEFAULT_DOMAIN_NAME)

function install_interactive_webmail {
    echo -n ''
    APP_INSTALLED=1
}

function change_password_webmail {
    echo -n ''
}

function get_mariadb_webmail_admin_password {
    if [ -f /home/$MY_USERNAME/README ]; then
        if grep -q "MariaDB webmail admin password" /home/$MY_USERNAME/README; then
            WEBMAIL_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB webmail admin password" | awk -F ':' '{print $2}' | sed 's/^ *//')
        fi
    fi
}

function webmail_create_database {
    function_check get_mariadb_webmail_admin_password
    get_mariadb_webmail_admin_password
    if [ ! $WEBMAIL_ADMIN_PASSWORD ]; then
        if [ -f $IMAGE_PASSWORD_FILE ]; then
            WEBMAIL_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
        else
            WEBMAIL_ADMIN_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
        fi
    fi
    if [ ! $WEBMAIL_ADMIN_PASSWORD ]; then
        return
    fi
    function_check create_database
    create_database webmail "$WEBMAIL_ADMIN_PASSWORD"
}

function reconfigure_webmail {
    echo -n ''
}

function upgrade_webmail {
    function_check set_repo_commit
    set_repo_commit $WEBMAIL_PATH "webmail commit" "$WEBMAIL_COMMIT" $WEBMAIL_REPO
}

function backup_local_webmail {
    if ! grep -q "install_webmail" $COMPLETION_FILE; then
        return
    fi
    echo $"Backing up webmail"

    function_check backup_database_to_usb
    backup_database_to_usb webmail

    echo $"Backing up webmail complete"
}

function restore_local_webmail {
    if ! grep -q "install_webmail" $COMPLETION_FILE; then
        return
    fi
    echo $"Restoring webmail"

    function_check webmail_create_database
    webmail_create_database

    function_check restore_database
    restore_database webmail

    echo $"Restore of webmail complete"
}

function backup_remote_webmail {
    echo -n ''
}

function restore_remote_webmail {
    echo -n ''
}

function remove_webmail {
    nginx_dissite webmail
    if [ -f /etc/nginx/sites-available/webmail ]; then
        rm /etc/nginx/sites-available/webmail
    fi
    function_check remove_onion_service
    remove_onion_service webmail ${WEBMAIL_ONION_PORT}
    function_check drop_database
    drop_database webmail
    if [ -d $WEB_PATH/webmail ]; then
        rm -rf $WEB_PATH/webmail
    fi
    sed -i '/Webmail/d' $COMPLETION_FILE
    sed -i '/webmail/d' $COMPLETION_FILE
    sed -i '/Webmail/d' /home/$MY_USERNAME/README
    sed -i '/webmail/d' /home/$MY_USERNAME/README
    remove_completion_param install_webmail
}

function install_webmail {
    if [ -d /etc/apache2 ]; then
        rm -rf /etc/apache2
        echo $'Removed Apache installation after Dokuwiki install'
    fi

    function_check install_mariadb
    install_mariadb

    function_check get_mariadb_password
    get_mariadb_password

    function_check repair_databases_script
    repair_databases_script

    apt-get -yq install php5-common php5-cli php5-curl php5-gd php5-mysql php5-mcrypt git
    apt-get -yq install php5-dev imagemagick php5-imagick php5-sqlite php-auth-sasl php-net-smtp php-mime-type
    apt-get -yq install php-mail-mime php-mail-mimedecode php-net-ldap3 php5-pspell
    pear install Net_IDNA2

    if [ ! -f $WEBMAIL_PATH/index.php ]; then
        cd $WEB_PATH
        git_clone $WEBMAIL_REPO webmail
        cd $WEBMAIL_PATH
        git checkout $WEBMAIL_COMMIT -b $WEBMAIL_COMMIT
        set_completion_param "webmail commit" "$WEBMAIL_COMMIT"
    fi
    if [ ! -f $WEBMAIL_PATH/index.php ]; then
        echo $'Did not clone webmail repo'
        exit 52825
    fi

    WEBMAIL_ONION_HOSTNAME=$(add_onion_service webmail 80 ${WEBMAIL_ONION_PORT})

    webmail_create_database

    mysql -u root --password="$MARIADB_PASSWORD" -D webmail < $WEBMAIL_PATH/SQL/mysql.initial.sql

    if [ ! -d /var/www/$DEFAULT_DOMAIN_NAME/htdocs ]; then
        mkdir -p /var/www/$DEFAULT_DOMAIN_NAME/htdocs
    fi
    ln -s $WEBMAIL_PATH /var/www/$DEFAULT_DOMAIN_NAME/htdocs/webmail

    if [ ! -f /var/www/webmail/config/config.inc.php ]; then
        # generate the configuration
        echo '<?php' > /var/www/webmail/config/config.inc.php
        echo "\$config['db_dsnw'] = 'mysql://root:${MARIADB_PASSWORD}@localhost/webmail';" >> /var/www/webmail/config/config.inc.php
        echo "\$config['default_host'] = 'localhost';" >> /var/www/webmail/config/config.inc.php
        echo "\$config['support_url'] = '';" >> /var/www/webmail/config/config.inc.php
        WEBMAIL_DES_KEY="$(create_password 25)"
        echo "\$config['des_key'] = '${WEBMAIL_DES_KEY}';" >> /var/www/webmail/config/config.inc.php
        echo "\$config['product_name'] = '${PROJECT_NAME}';" >> /var/www/webmail/config/config.inc.php
        echo "\$config['plugins'] = array('enigma');" >> /var/www/webmail/config/config.inc.php
        echo "\$config['mime_param_folding'] = 0;" >> /var/www/webmail/config/config.inc.php
        echo "\$config['enable_installer'] = false;" >> /var/www/webmail/config/config.inc.php
    fi

    chown -R www-data:www-data $WEBMAIL_PATH

    echo 'server {' > /etc/nginx/sites-available/webmail
    echo "  listen 127.0.0.1:$WEBMAIL_ONION_PORT default_server;" >> /etc/nginx/sites-available/webmail
    echo "  server_name $WEBMAIL_ONION_HOSTNAME;" >> /etc/nginx/sites-available/webmail
    echo "  root ${WEBMAIL_PATH};" >> /etc/nginx/sites-available/webmail
    echo '  index index.php index.html index.htm;' >> /etc/nginx/sites-available/webmail
    echo '  access_log off;' >> /etc/nginx/sites-available/webmail
    echo '  error_log off;' >> /etc/nginx/sites-available/webmail
    echo '  location / {' >> /etc/nginx/sites-available/webmail
    echo '    try_files $uri $uri/ /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  error_page 404 /404.html;' >> /etc/nginx/sites-available/webmail
    echo '  error_page 500 502 503 504 /50x.html;' >> /etc/nginx/sites-available/webmail
    echo '  location = /50x.html {' >> /etc/nginx/sites-available/webmail
    echo "    root ${WEBMAIL_PATH};" >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  location ~ ^/(README.md|INSTALL|LICENSE|CHANGELOG|UPGRADING)$ {' >> /etc/nginx/sites-available/webmail
    echo '    deny all;' >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  location ~ ^/(config|temp|logs)/ {' >> /etc/nginx/sites-available/webmail
    echo '    deny all;' >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  location ~ /\. {' >> /etc/nginx/sites-available/webmail
    echo '    deny all;' >> /etc/nginx/sites-available/webmail
    echo '    access_log off;' >> /etc/nginx/sites-available/webmail
    echo '    log_not_found off;' >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  location ~ \.php$ {' >> /etc/nginx/sites-available/webmail
    echo '    try_files $uri =404;' >> /etc/nginx/sites-available/webmail
    echo '    fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/webmail
    echo '    fastcgi_index index.php;' >> /etc/nginx/sites-available/webmail
    echo '    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/webmail
    echo '    include fastcgi_params;' >> /etc/nginx/sites-available/webmail
    echo '  }' >> /etc/nginx/sites-available/webmail
    echo '  add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/webmail
    echo '  add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/webmail
    echo '  client_max_body_size 15m;' >> /etc/nginx/sites-available/webmail
    echo '}' >> /etc/nginx/sites-available/webmail

    nginx_ensite webmail
    systemctl restart php5-fpm
    systemctl restart nginx

    if ! grep -q "Webmail" /home/$MY_USERNAME/README; then
        echo '' >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo '# Webmail' >> /home/$MY_USERNAME/README
        if [[ $ONION_ONLY == 'no' ]]; then
            echo $"To access webmail open https://$DEFAULT_DOMAIN_NAME/webmail/index.php" >> /home/$MY_USERNAME/README
        else
            echo $"To access webmail open http://$WEBMAIL_ONION_HOSTNAME" >> /home/$MY_USERNAME/README
        fi
        echo $"MariaDB webmail admin password: $WEBMAIL_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    fi
    APP_INSTALLED=1
}

# NOTE: deliberately no exit 0