#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# postactiv application
#
# License
# =======
#
# Copyright (C) 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='full full-vim media'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

POSTACTIV_DOMAIN_NAME=
POSTACTIV_CODE=
POSTACTIV_ONION_PORT=8100
POSTACTIV_REPO="https://git.gnu.io/maiyannah/postActiv"
POSTACTIV_COMMIT='a07d28888d97e207288c86b81905e42dae90aada'
POSTACTIV_ADMIN_PASSWORD=

# script which causes old posts to expire
postactiv_expire_script=/usr/bin/postactiv-expire

postactiv_variables=(POSTACTIV_COMMIT
                     ONION_ONLY
                     POSTACTIV_DOMAIN_NAME
                     POSTACTIV_CODE
                     DDNS_PROVIDER
                     MY_USERNAME)

function remove_user_postactiv {
    remove_username="$1"

    function_check get_completion_param
    POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
    if [ -d /var/www/$POSTACTIV_DOMAIN_NAME ]; then
        cd /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
        php scripts/deleteprofile.php -n $remove_username -y
    fi
}

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

    POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
    if [ -d /var/www/${POSTACTIV_DOMAIN_NAME}/htdocs ]; then
        cd /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
        php scripts/registeruser.php -n $new_username -w "$new_user_password" -e "$new_username@$HOSTNAME"
        ${PROJECT_NAME}-addemail -u $new_username -e "noreply@$POSTACTIV_DOMAIN_NAME" -g postactiv --public no
        echo '0'
    else
        echo '1'
    fi
}

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

    if [[ $ONION_ONLY != "no" ]]; then
        POSTACTIV_DOMAIN_NAME='postactiv.local'
    else
        POSTACTIV_DETAILS_COMPLETE=
        while [ ! $POSTACTIV_DETAILS_COMPLETE ]
        do
            data=$(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 $"PostActiv Configuration" \
                       --form $"\nPlease enter your postactiv details.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 14 65 2 \
                       $"Domain:" 1 1 "$(grep 'POSTACTIV_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       $"Code:" 2 1 "$(grep 'POSTACTIV_CODE' temp.cfg | awk -F '=' '{print $2}')" 2 25 33 255 \
                       2> $data
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"PostActiv Configuration" \
                       --form $"\nPlease enter your postactiv details.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 14 65 2 \
                       $"Domain:" 1 1 "$(grep 'POSTACTIV_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       2> $data
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            POSTACTIV_DOMAIN_NAME=$(cat $data | sed -n 1p)
            img_url=$(cat $data | sed -n 3p)
            if [ $POSTACTIV_DOMAIN_NAME ]; then
                if [[ $POSTACTIV_DOMAIN_NAME == "$HUBZILLA_DOMAIN_NAME" ]]; then
                    POSTACTIV_DOMAIN_NAME=""
                fi
                TEST_DOMAIN_NAME=$POSTACTIV_DOMAIN_NAME
                validate_domain_name
                if [[ $TEST_DOMAIN_NAME != $POSTACTIV_DOMAIN_NAME ]]; then
                    POSTACTIV_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        POSTACTIV_CODE=$(cat $data | sed -n 4p)
                        validate_freedns_code "$POSTACTIV_CODE"
                        if [ ! $VALID_CODE ]; then
                            POSTACTIV_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $POSTACTIV_DOMAIN_NAME ]; then
                POSTACTIV_DETAILS_COMPLETE="yes"
            fi
        done

        # save the results in the config file
        write_config_param "POSTACTIV_CODE" "$POSTACTIV_CODE"
    fi
    write_config_param "POSTACTIV_DOMAIN_NAME" "$POSTACTIV_DOMAIN_NAME"
    APP_INSTALLED=1
}

function change_password_postactiv {
    echo -n ''
}

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

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

    function_check create_database
    create_database postactiv "$POSTACTIV_ADMIN_PASSWORD" $MY_USERNAME
}

function postactiv_running_script {
    # check that the daemon is running
    echo '#!/bin/bash' > /etc/cron.hourly/postactiv-daemons
    echo 'daemon_lines=$(ps aux | grep "scripts/queuedaemon.php" | grep "/var/www")' >> /etc/cron.hourly/postactiv-daemons
    echo 'if [[ $daemon_lines != *"/var/www/"* ]]; then' >> /etc/cron.hourly/postactiv-daemons

    echo "    ADMIN_USER=\$(cat $COMPLETION_FILE | grep 'Admin user' | awk -F ':' '{print \$2}')" >> /etc/cron.hourly/postactiv-daemons
    echo '    MY_EMAIL_ADDRESS=$ADMIN_USER@$HOSTNAME' >> /etc/cron.hourly/postactiv-daemons
    echo '    echo "Restarting postactiv daemons" | mail -s "postactiv daemons not found" $MY_EMAIL_ADDRESS' >> /etc/cron.hourly/postactiv-daemons
    echo "    cd /var/www/${POSTACTIV_DOMAIN_NAME}/htdocs" >> /etc/cron.hourly/postactiv-daemons
    echo '    scripts/startdaemons.sh' >> /etc/cron.hourly/postactiv-daemons
    echo 'fi' >> /etc/cron.hourly/postactiv-daemons
    chmod +x /etc/cron.hourly/postactiv-daemons
}

function reconfigure_postactiv {
    echo -n ''
}

function upgrade_postactiv {
    if grep -q "postactiv domain" $COMPLETION_FILE; then
        POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
    fi

    # update to the next commit
    function_check set_repo_commit
    set_repo_commit /var/www/$POSTACTIV_DOMAIN_NAME/htdocs "postactiv commit" "$POSTACTIV_COMMIT" $POSTACTIV_REPO

    function_check postactiv_running_script
    postactiv_running_script
}


function backup_local_postactiv {
    POSTACTIV_DOMAIN_NAME='postactiv'
    if grep -q "postactiv domain" $COMPLETION_FILE; then
        POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
    fi

    source_directory=/var/www/${POSTACTIV_DOMAIN_NAME}/htdocs
    if [ -d $source_directory ]; then
        dest_directory=postactiv
        function_check suspend_site
        suspend_site ${POSTACTIV_DOMAIN_NAME}

        function_check backup_directory_to_usb
        backup_directory_to_usb $source_directory $dest_directory

        function_check backup_database_to_usb
        backup_database_to_usb postactiv

        function_check restart_site
        restart_site
    fi
}

function restore_local_postactiv {
    if ! grep -q "postactiv domain" $COMPLETION_FILE; then
        return
    fi
    POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
    if [ $POSTACTIV_DOMAIN_NAME ]; then
        temp_restore_dir=/root/temppostactiv
        postactiv_dir=/var/www/${POSTACTIV_DOMAIN_NAME}/htdocs
        # stop the daemons
        cd $postactiv_dir
        scripts/stopdaemons.sh

        function_check postactiv_create_database
        postactiv_create_database

        restore_database postactiv ${POSTACTIV_DOMAIN_NAME}
        if [ -d $temp_restore_dir ]; then
            rm -rf $temp_restore_dir
        fi

        # start the daemons
        cd $postactiv_dir
        scripts/startdaemons.sh
    fi
}

function backup_remote_postactiv {
    if grep -q "postactiv domain" $COMPLETION_FILE; then
        POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")
        temp_backup_dir=/var/www/${POSTACTIV_DOMAIN_NAME}/htdocs
        if [ -d $temp_backup_dir ]; then
            function_check suspend_site
            suspend_site ${POSTACTIV_DOMAIN_NAME}

            function_check backup_database_to_friend
            backup_database_to_friend postactiv

            function_check backup_directory_to_friend
            backup_directory_to_friend $temp_backup_dir postactiv

            function_check restart_site
            restart_site
        else
            echo $"postactiv domain specified but not found in ${temp_backup_dir}"
        fi
    fi
}

function restore_remote_postactiv {
    if grep -q "postactiv domain" $COMPLETION_FILE; then
        POSTACTIV_DOMAIN_NAME=$(get_completion_param "postactiv domain")

        # stop the daemons
        cd /var/www/${POSTACTIV_DOMAIN_NAME}/htdocs
        ./scripts/stopdaemons.sh

        function_check postactiv_create_database
        postactiv_create_database

        function_check restore_database_from_friend
        restore_database_from_friend postactiv ${POSTACTIV_DOMAIN_NAME}
        if [ -d /root/temppostactiv ]; then
            rm -rf /root/temppostactiv
        fi

        # start the daemons
        cd /var/www/${POSTACTIV_DOMAIN_NAME}/htdocs
        ./scripts/startdaemons.sh
    fi
}

function remove_postactiv {
    if [ ${#POSTACTIV_DOMAIN_NAME} -eq 0 ]; then
        return
    fi
    read_config_param "POSTACTIV_DOMAIN_NAME"
    read_config_param "MY_USERNAME"
    echo "Removing $POSTACTIV_DOMAIN_NAME"
    nginx_dissite $POSTACTIV_DOMAIN_NAME
    remove_certs $POSTACTIV_DOMAIN_NAME
    if [ -f /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/scripts/stopdaemons.sh ]; then
        cd /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/scripts
        ./scripts/stopdaemons.sh
    fi
    if [ -d /var/www/$POSTACTIV_DOMAIN_NAME ]; then
        rm -rf /var/www/$POSTACTIV_DOMAIN_NAME
    fi
    if [ -f /etc/nginx/sites-available/$POSTACTIV_DOMAIN_NAME ]; then
        rm /etc/nginx/sites-available/$POSTACTIV_DOMAIN_NAME
    fi
    function_check drop_database
    drop_database postactiv
    function_check remove_onion_service
    remove_onion_service postactiv ${POSTACTIV_ONION_PORT}
    if grep -q "postactiv" /etc/crontab; then
        sed -i "/postactiv/d" /etc/crontab
    fi
    remove_app postactiv
    remove_completion_param install_postactiv
    sed -i '/postactiv/d' $COMPLETION_FILE
    if [ -f /etc/cron.hourly/postactiv-daemons ]; then
        rm /etc/cron.hourly/postactiv-daemons
    fi
    sed -i '/Postactiv/d' /home/$MY_USERNAME/README
}

function install_postactiv_main {
    if [ ! $POSTACTIV_DOMAIN_NAME ]; then
        echo $'No domain name was given for postactiv'
        exit 7359
    fi

    if [[ $(app_is_installed postactiv_main) == "1" ]]; then
        return
    fi

    function_check postactiv_running_script
    postactiv_running_script

    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 php-gettext php5-curl php5-gd php5-mysql git curl php-xml-parser
    apt-get -yq install php5-memcached php5-intl

    if [ ! -d /var/www/$POSTACTIV_DOMAIN_NAME ]; then
        mkdir /var/www/$POSTACTIV_DOMAIN_NAME
    fi
    if [ ! -d /var/www/$POSTACTIV_DOMAIN_NAME/htdocs ]; then
        function_check git_clone
        git_clone $POSTACTIV_REPO /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
        if [ ! -d /var/www/$POSTACTIV_DOMAIN_NAME/htdocs ]; then
            echo $'Unable to clone postactiv repo'
            exit 87525
        fi
    fi

    cd /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
    git checkout $POSTACTIV_COMMIT -b $POSTACTIV_COMMIT
    set_completion_param "postactiv commit" "$POSTACTIV_COMMIT"

    chmod a+w /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
    chown www-data:www-data /var/www/$POSTACTIV_DOMAIN_NAME/htdocs
    chmod +x /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/scripts/maildaemon.php

    function_check postactiv_create_database
    postactiv_create_database

    if [ ! -f "/etc/aliases" ]; then
        touch /etc/aliases
    fi
    if ! grep -q "www-data: root" /etc/aliases; then
        echo 'www-data: root' >> /etc/aliases
    fi
    if ! grep -q "/var/www/$POSTACTIV_DOMAIN_NAME/htdocs/scripts/maildaemon.php" /etc/aliases; then
        echo "*: /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/scripts/maildaemon.php" >> /etc/aliases
    fi

    function_check add_ddns_domain
    add_ddns_domain $POSTACTIV_DOMAIN_NAME

    postactiv_nginx_site=/etc/nginx/sites-available/$POSTACTIV_DOMAIN_NAME
    if [[ $ONION_ONLY == "no" ]]; then
        function_check nginx_http_redirect
        nginx_http_redirect $POSTACTIV_DOMAIN_NAME
        echo 'server {' >> $postactiv_nginx_site
        echo '  listen 443 ssl;' >> $postactiv_nginx_site
        echo "  server_name $POSTACTIV_DOMAIN_NAME;" >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Security' >> $postactiv_nginx_site
        function_check nginx_ssl
        nginx_ssl $POSTACTIV_DOMAIN_NAME

        function_check nginx_disable_sniffing
        nginx_disable_sniffing $POSTACTIV_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Logs' >> $postactiv_nginx_site
        echo '  access_log off;' >> $postactiv_nginx_site
        echo '  error_log off;' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Root' >> $postactiv_nginx_site
        echo "  root /var/www/$POSTACTIV_DOMAIN_NAME/htdocs;" >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Index' >> $postactiv_nginx_site
        echo '  index index.php;' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # PHP' >> $postactiv_nginx_site
        echo '  location ~ \.php {' >> $postactiv_nginx_site
        echo '    include snippets/fastcgi-php.conf;' >> $postactiv_nginx_site
        echo '    fastcgi_pass unix:/var/run/php5-fpm.sock;' >> $postactiv_nginx_site
        echo '  }' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Location' >> $postactiv_nginx_site
        echo '  location / {' >> $postactiv_nginx_site
        function_check nginx_limits
        nginx_limits $POSTACTIV_DOMAIN_NAME '15m'
        echo '    try_files $uri $uri/ @postactiv;' >> $postactiv_nginx_site
        echo '  }' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Fancy URLs' >> $postactiv_nginx_site
        echo '  location @postactiv {' >> $postactiv_nginx_site
        echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $postactiv_nginx_site
        echo '  }' >> $postactiv_nginx_site
        echo '' >> $postactiv_nginx_site
        echo '  # Restrict access that is unnecessary anyway' >> $postactiv_nginx_site
        echo '  location ~ /\.(ht|git) {' >> $postactiv_nginx_site
        echo '    deny all;' >> $postactiv_nginx_site
        echo '  }' >> $postactiv_nginx_site
        echo '}' >> $postactiv_nginx_site
    else
        echo -n '' > $postactiv_nginx_site
    fi
    echo 'server {' >> $postactiv_nginx_site
    echo "    listen 127.0.0.1:$POSTACTIV_ONION_PORT default_server;" >> $postactiv_nginx_site
    echo "    server_name $POSTACTIV_DOMAIN_NAME;" >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $POSTACTIV_DOMAIN_NAME
    echo '' >> $postactiv_nginx_site
    echo '  # Logs' >> $postactiv_nginx_site
    echo '  access_log off;' >> $postactiv_nginx_site
    echo '  error_log off;' >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # Root' >> $postactiv_nginx_site
    echo "  root /var/www/$POSTACTIV_DOMAIN_NAME/htdocs;" >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # Index' >> $postactiv_nginx_site
    echo '  index index.php;' >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # PHP' >> $postactiv_nginx_site
    echo '  location ~ \.php {' >> $postactiv_nginx_site
    echo '    include snippets/fastcgi-php.conf;' >> $postactiv_nginx_site
    echo '    fastcgi_pass unix:/var/run/php5-fpm.sock;' >> $postactiv_nginx_site
    echo '  }' >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # Location' >> $postactiv_nginx_site
    echo '  location / {' >> $postactiv_nginx_site
    function_check nginx_limits
    nginx_limits $POSTACTIV_DOMAIN_NAME '15m'
    echo '    try_files $uri $uri/ @postactiv;' >> $postactiv_nginx_site
    echo '  }' >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # Fancy URLs' >> $postactiv_nginx_site
    echo '  location @postactiv {' >> $postactiv_nginx_site
    echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $postactiv_nginx_site
    echo '  }' >> $postactiv_nginx_site
    echo '' >> $postactiv_nginx_site
    echo '  # Restrict access that is unnecessary anyway' >> $postactiv_nginx_site
    echo '  location ~ /\.(ht|git) {' >> $postactiv_nginx_site
    echo '    deny all;' >> $postactiv_nginx_site
    echo '  }' >> $postactiv_nginx_site
    echo '}' >> $postactiv_nginx_site

    function_check configure_php
    configure_php

    function_check create_site_certificate
    create_site_certificate $POSTACTIV_DOMAIN_NAME 'yes'

    # Ensure that the database gets backed up locally, if remote
    # backups are not being used
    function_check backup_databases_script_header
    backup_databases_script_header

    function_check backup_database_local
    backup_database_local postactiv

    function_check nginx_ensite
    nginx_ensite $POSTACTIV_DOMAIN_NAME

    # NOTE: For the typical case always enable SSL and only
    # disable it if in onion only mode. This is due to complexities
    # with the way URLs are generated by postactiv
    postactiv_ssl='always'
    if [[ $ONION_ONLY != 'no' ]]; then
        postactiv_ssl='never'
    fi

    POSTACTIV_ONION_HOSTNAME=$(add_onion_service postactiv 80 ${POSTACTIV_ONION_PORT})

    POSTACTIV_SERVER=${POSTACTIV_DOMAIN_NAME}
    if [[ $ONION_ONLY != 'no' ]]; then
        POSTACTIV_SERVER=${POSTACTIV_ONION_HOSTNAME}
    fi

    # Create the configuration
    postactiv_installer=/var/www/${POSTACTIV_DOMAIN_NAME}/htdocs/scripts/install_cli.php
    if [ ! -f $postactiv_installer ]; then
        echo $'No postactiv commandline installer found'
        exit 53026
    fi
    ${postactiv_installer} --server "${POSTACTIV_SERVER}" \
                           --host="localhost" --database="postactiv" \
                           --dbtype=mysql --username="root" -v \
                           --password="$MARIADB_PASSWORD" \
                           --sitename=$"postactiv" --fancy='yes' \
                           --admin-nick="$MY_USERNAME" \
                           --admin-pass="$POSTACTIV_ADMIN_PASSWORD" \
                           --site-profile="community" \
                           --ssl=${postactiv_ssl}
    # There can be a lot of warnings here so the return value check is disabled
    #if [ ! "$?" = "0" ]; then
    #    # failed to install
    #    echo $'Could not install postactiv'
    #    exit 72357
    #fi

    # check postactiv has a config file
    postactiv_config_file=/var/www/$POSTACTIV_DOMAIN_NAME/htdocs/config.php
    if [ ! -f $postactiv_config_file ]; then
        echo $'Postactiv config.php not found'
        exit 87586
    fi

    # Some useful settings
    if ! grep -q "Recommended postactiv settings" $postactiv_config_file; then
        echo "" >> $postactiv_config_file
        echo "// Recommended postactiv settings" >> $postactiv_config_file
        echo "\$config['thumbnail']['maxsize'] = 3000;" >> $postactiv_config_file
        echo "\$config['profile']['delete'] = true;" >> $postactiv_config_file
        echo "\$config['profile']['changenick'] = true;" >> $postactiv_config_file
        echo "\$config['public']['localonly'] = false;" >> $postactiv_config_file
        echo "addPlugin('StoreRemoteMedia');" >> $postactiv_config_file
        echo "\$config['queue']['enabled'] = true;" >> $postactiv_config_file
        echo "\$config['queue']['daemon'] = true;" >> $postactiv_config_file
        echo "\$config['ostatus']['hub_retries'] = 3;" >> $postactiv_config_file
    fi

    # This improves performance
    sed -i "s|//\$config\['db'\]\['schemacheck'\].*|\$config\['db'\]\['schemacheck'\] = 'script';|g" $postactiv_config_file

    # remove the install script
    if [ -f /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/install.php ]; then
        rm /var/www/$POSTACTIV_DOMAIN_NAME/htdocs/install.php
    fi

    systemctl restart php5-fpm
    systemctl restart nginx

    ${PROJECT_NAME}-addemail -u $MY_USERNAME -e "noreply@$POSTACTIV_DOMAIN_NAME" -g postactiv --public no

    # some post-install instructions for the user
    if ! grep -q $"Postactiv administrator" /home/$MY_USERNAME/README; then
        echo '' >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo $'# Postactiv' >> /home/$MY_USERNAME/README
        echo $"Postactiv administrator nickname: $MY_USERNAME" >> /home/$MY_USERNAME/README
        echo $"Postactiv administrator password: $POSTACTIV_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    else
        if [ -f /home/$MY_USERNAME/README ]; then
            sed -i "s|Postactiv administrator password.*|Postactiv administrator password: $POSTACTIV_ADMIN_PASSWORD|g" /home/$MY_USERNAME/README
        fi
    fi

    if ! grep -q "Postactiv onion domain" /home/$MY_USERNAME/README; then
        echo $"Postactiv onion domain: ${POSTACTIV_ONION_HOSTNAME}" >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    else
        if [ -f /home/$MY_USERNAME/README ]; then
            sed -i "s|Postactiv onion domain.*|Postactiv onion domain: ${POSTACTIV_ONION_HOSTNAME}|g" /home/$MY_USERNAME/README
        fi
    fi

    set_completion_param "postactiv domain" "$POSTACTIV_DOMAIN_NAME"

    install_completed postactiv_main
}

function expire_postactiv_posts {
    # To prevent the database size from growing endlessly this script expires posts
    # after a number of months
    if [ ! -d /var/www/$POSTACTIV_DOMAIN_NAME/htdocs ]; then
        return
    fi

    echo '<?php' > $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo '// postactiv post expiry script, based on StatExpire by Tony Baldwin' >> $postactiv_expire_script
    echo '// https://github.com/tonybaldwin/statexpire' >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo '$oldate=date(("Y-m-d"), strtotime("-3 months"));' >> $postactiv_expire_script
    echo '$username="root";' >> $postactiv_expire_script
    echo "\$password=trim(file_get_contents(\"$DATABASE_PASSWORD_FILE\"));" >> $postactiv_expire_script
    echo '$database="postactiv";' >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo 'if (!$link = mysql_connect("localhost", $username, $password)) {' >> $postactiv_expire_script
    echo '    echo "Could not connect to mariadb";' >> $postactiv_expire_script
    echo '    exit;' >> $postactiv_expire_script
    echo '}' >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo 'if (!mysql_select_db($database, $link)) {' >> $postactiv_expire_script
    echo '    echo "Could not select postactiv database";' >> $postactiv_expire_script
    echo '    exit;' >> $postactiv_expire_script
    echo '}' >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo "\$notice_query=\"DELETE FROM notice WHERE created <= '\$oldate 01:01:01'\";" >> $postactiv_expire_script
    echo "\$conversation_query=\"DELETE FROM conversation WHERE created <= '$oldate 01:01:01'\";" >> $postactiv_expire_script
    echo "\$reply_query=\"DELETE FROM reply WHERE modified <= '\$oldate 01:01:01'\";" >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo 'mysql_query($notice_query);' >> $postactiv_expire_script
    echo '$rowaff1=mysql_affected_rows();' >> $postactiv_expire_script
    echo 'mysql_query($conversation_query);' >> $postactiv_expire_script
    echo '$rowaff2=mysql_affected_rows();' >> $postactiv_expire_script
    echo 'mysql_query($reply_query);' >> $postactiv_expire_script
    echo '$rowaff3=mysql_affected_rows();' >> $postactiv_expire_script
    echo 'mysql_close();' >> $postactiv_expire_script
    echo '' >> $postactiv_expire_script
    echo 'echo "Expire postactiv posts: $rowaff1 notices, $rowaff2 conversations, and $rowaff3 replies deleted from database.\n";' >> $postactiv_expire_script
    chmod +x $postactiv_expire_script

    # Add a cron job
    if ! grep -q "$postactiv_expire_script" /etc/crontab; then
        echo "10 3 5   *   *   root /usr/bin/timeout 500 /usr/bin/php $postactiv_expire_script" >> /etc/crontab
    fi

    # remove old expire script
    if [ -f /etc/cron.weekly/clear-postactiv-database ]; then
        rm /etc/cron.weekly/clear-postactiv-database
    fi
}

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

    install_postactiv_main
    expire_postactiv_posts

    # unleash the daemons!
    /etc/cron.hourly/postactiv-daemons

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"