#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Pleroma backend application
#
# 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 social'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

PLEROMA_DOMAIN_NAME=
PLEROMA_CODE=
PLEROMA_PORT=4000
PLEROMA_ONION_PORT=8011
PLEROMA_REPO="https://git.pleroma.social/pleroma/pleroma.git"
PLEROMA_COMMIT='7252f6b054dfdfac1f9bac77c442c5a1ebd898af'
PLEROMA_ADMIN_PASSWORD=
PLEROMA_DIR=/etc/pleroma

PLEROMA_BACKGROUND_IMAGE_URL=

PLEROMA_TITLE='Pleroma Server'

# Number of months after which posts expire
PLEROMA_EXPIRE_MONTHS=3

pleroma_variables=(ONION_ONLY
                   PLEROMA_DOMAIN_NAME
                   PLEROMA_CODE
                   PLEROMA_WELCOME_MESSAGE
                   PLEROMA_BACKGROUND_IMAGE_URL
                   DDNS_PROVIDER
                   PLEROMA_TITLE
                   PLEROMA_EXPIRE_MONTHS
                   MY_EMAIL_ADDRESS
                   MY_USERNAME)

function logging_on_pleroma {
    echo -n ''
}

function logging_off_pleroma {
    echo -n ''
}

function remove_user_pleroma {
    remove_username="$1"

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

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

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

    echo '0'
}

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

    if [[ $ONION_ONLY != "no" ]]; then
        PLEROMA_DOMAIN_NAME='pleroma.local'
    else
        PLEROMA_DETAILS_COMPLETE=
        while [ ! $PLEROMA_DETAILS_COMPLETE ]
        do
            data=$(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 $"Pleroma Configuration" \
                       --form $"\nPlease enter your Pleroma details. The background image URL can be left blank.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 16 65 4 \
                       $"Domain:" 1 1 "$(grep 'PLEROMA_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       $"Title:" 2 1 "$(grep '$PLEROMA_TITLE' temp.cfg | awk -F '=' '{print $2}')" 2 25 255 255 \
                       $"Background image URL:" 3 1 "$(grep '$PLEROMA_BACKGROUND_IMAGE_URL' temp.cfg | awk -F '=' '{print $2}')" 3 25 255 255 \
                       $"Code:" 4 1 "$(grep 'PLEROMA_CODE' temp.cfg | awk -F '=' '{print $2}')" 4 25 33 255 \
                       2> $data
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Pleroma Configuration" \
                       --form $"\nPlease enter your Pleroma details. The background image URL can be left blank.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 16 65 4 \
                       $"Domain:" 1 1 "$(grep 'PLEROMA_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       $"Title:" 2 1 "$(grep '$PLEROMA_TITLE' temp.cfg | awk -F '=' '{print $2}')" 2 25 255 255 \
                       $"Background image URL:" 3 1 "$(grep '$PLEROMA_BACKGROUND_IMAGE_URL' temp.cfg | awk -F '=' '{print $2}')" 3 25 255 255 \
                       2> $data
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            PLEROMA_DOMAIN_NAME=$(cat $data | sed -n 1p)
            title=$(cat $data | sed -n 2p)
            if [ ${#title} -gt 1 ]; then
                PLEROMA_TITLE=$welcome_msg
            fi
            img_url=$(cat $data | sed -n 3p)
            if [ ${#img_url} -gt 1 ]; then
                PLEROMA_BACKGROUND_IMAGE_URL=$img_url
            fi
            if [ $PLEROMA_DOMAIN_NAME ]; then
                if [[ $PLEROMA_DOMAIN_NAME == "$HUBZILLA_DOMAIN_NAME" ]]; then
                    PLEROMA_DOMAIN_NAME=""
                fi
                TEST_DOMAIN_NAME=$PLEROMA_DOMAIN_NAME
                validate_domain_name
                if [[ $TEST_DOMAIN_NAME != $PLEROMA_DOMAIN_NAME ]]; then
                    PLEROMA_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        PLEROMA_CODE=$(cat $data | sed -n 4p)
                        validate_freedns_code "$PLEROMA_CODE"
                        if [ ! $VALID_CODE ]; then
                            PLEROMA_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $PLEROMA_DOMAIN_NAME ]; then
                PLEROMA_DETAILS_COMPLETE="yes"
            fi
        done

        # remove any invalid characters
        if [ ${#PLEROMA_TITLE} -gt 0 ]; then
            new_title=$(echo "$PLEROMA_TITLE" | sed "s|'||g")
            PLEROMA_TITLE="$new_title"
        fi

        # save the results in the config file
        write_config_param "PLEROMA_CODE" "$PLEROMA_CODE"
        write_config_param "PLEROMA_TITLE" "$PLEROMA_TITLE"
        write_config_param "PLEROMA_BACKGROUND_IMAGE_URL" "$PLEROMA_BACKGROUND_IMAGE_URL"
    fi
    write_config_param "PLEROMA_DOMAIN_NAME" "$PLEROMA_DOMAIN_NAME"
    APP_INSTALLED=1
}

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

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

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

    add_postgresql_user pleroma "$PLEROMA_ADMIN_PASSWORD" encrypted
    run_system_query_postgresql "GRANT ALL ON ALL tables IN SCHEMA public TO pleroma;"
    run_system_query_postgresql "GRANT ALL ON ALL sequences IN SCHEMA public TO pleroma;"

    cd $PLEROMA_DIR
    mix ecto.create
    mix ecto.migrate
}

function reconfigure_pleroma {
    echo -n ''
}

function pleroma_set_background_image {
    PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")

    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Pleroma" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $'Set a background image URL' 10 60 2>$data
    sel=$?
    case $sel in
        0)
            temp_background=$(<$data)
            if [ ${#temp_background} -gt 0 ]; then
                PLEROMA_BACKGROUND_IMAGE_URL="$temp_background"
                write_config_param "PLEROMA_BACKGROUND_IMAGE_URL" "$PLEROMA_BACKGROUND_IMAGE_URL"
                if [[ $(pleroma_set_background_image_from_url "$PLEROMA_DOMAIN_NAME" "$PLEROMA_BACKGROUND_IMAGE_URL" "$PLEROMA_TITLE" | tail -n 1) == "0" ]]; then
                    dialog --title $"Set Pleroma login background" \
                           --msgbox $"The background image has been set" 6 60
                fi
            fi
           ;;
    esac
    rm $data
}

function pleroma_set_title {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Pleroma" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $'Set a title' 10 60 2>$data
    sel=$?
    case $sel in
        0)
            new_title=$(<$data)
            if [ ${#new_title} -gt 0 ]; then
                PLEROMA_TITLE="$new_title"
                PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
                write_config_param "PLEROMA_TITLE" "$PLEROMA_TITLE"
                cd /var/www/$PLEROMA_DOMAIN_NAME/htdocs/static
                sed -i "s|\"name\":.*|\"name\": \"${PLEROMA_TITLE}\",|g" config.json
                sed -i "s|name: .*|name: \"${PLEROMA_TITLE}\",|g" $PLEROMA_DIR/config/config.exs
                systemctl restart pleroma
                dialog --title $"Set Pleroma title" \
                       --msgbox $"The title has been set" 6 60
            fi
           ;;
    esac
    rm $data
}

function pleroma_set_expire_months {
    PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
    read_config_param "PLEROMA_EXPIRE_MONTHS"

    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Pleroma" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $'Set an expiry period for posts in months. Anything older will be deleted. Lower values help to keep the database size small and as fast as possible.' 12 60 "$PLEROMA_EXPIRE_MONTHS" 2>$data
    sel=$?
    case $sel in
        0)
            new_expiry_months=$(<$data)
            if [ ${#new_expiry_months} -gt 0 ]; then
                # should contain no spaces
                if [[ "$new_expiry_months" == *" "* ]]; then
                    return
                fi
                # should be a number
                re='^[0-9]+$'
                if ! [[ $new_expiry_months =~ $re ]] ; then
                    return
                fi
                # set the new value
                PLEROMA_EXPIRE_MONTHS=$new_expiry_months
                write_config_param "PLEROMA_EXPIRE_MONTHS" "$PLEROMA_EXPIRE_MONTHS"

                # TODO

                dialog --title $"Set Pleroma post expiry period" \
                       --msgbox $"Expiry period set to $PLEROMA_EXPIRE_MONTHS months" 6 60
            fi
           ;;
    esac
    rm $data
}

function configure_interactive_pleroma {
    read_config_param PLEROMA_EXPIRE_MONTHS
    while true
    do
        data=$(tempfile 2>/dev/null)
        trap "rm -f $data" 0 1 2 5 15
        dialog --backtitle $"Freedombone Control Panel" \
               --title $"Pleroma" \
               --radiolist $"Choose an operation:" 13 70 4 \
               1 $"Set a background image" off \
               2 $"Set the title" off \
               3 $"Set post expiry period (currently $PLEROMA_EXPIRE_MONTHS months)" off \
               4 $"Exit" on 2> $data
        sel=$?
        case $sel in
            1) return;;
            255) return;;
        esac
        case $(cat $data) in
            1) pleroma_set_background_image;;
            2) pleroma_set_title;;
            3) pleroma_set_expire_months;;
            4) break;;
        esac
        rm $data
    done
}

function upgrade_pleroma {
    echo -n ''
}


function backup_local_pleroma {
    PLEROMA_DOMAIN_NAME='pleroma'
    if grep -q "pleroma domain" $COMPLETION_FILE; then
        PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
    fi

    function_check suspend_site
    suspend_site ${PLEROMA_DOMAIN_NAME}

    source_directory=$PLEROMA_DIR
    dest_directory=pleroma
    backup_directory_to_usb $source_directory $dest_directory

    USE_POSTGRESQL=1
    function_check backup_database_to_usb
    backup_database_to_usb pleroma

    function_check restart_site
    restart_site
}

function restore_local_pleroma {
    if ! grep -q "pleroma domain" $COMPLETION_FILE; then
        return
    fi
    PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
    if [ $PLEROMA_DOMAIN_NAME ]; then
        echo $"Restoring pleroma"
        temp_restore_dir=/root/temppleroma
        pleroma_dir=$PLEROMA_DIR

        function_check pleroma_create_database
        pleroma_create_database

        USE_POSTGRESQL=1
        restore_database pleroma
        if [ -d $temp_restore_dir ]; then
            rm -rf $temp_restore_dir
        fi

        function_check restore_directory_from_usb
        restore_directory_from_usb $temp_restore_dir pleroma
        if [ -d $temp_restore_dir ]; then
            chown -R pleroma:pleroma $pleroma_dir
            rm -rf $temp_restore_dir
        fi

        echo $"Restore of pleroma complete"
    fi
}

function backup_remote_pleroma {
    PLEROMA_DOMAIN_NAME='pleroma'
    if grep -q "pleroma domain" $COMPLETION_FILE; then
        PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
    fi

    function_check suspend_site
    suspend_site ${PLEROMA_DOMAIN_NAME}

    source_directory=$PLEROMA_DIR
    dest_directory=pleroma
    backup_directory_to_friend $source_directory $dest_directory

    USE_POSTGRESQL=1
    function_check backup_database_to_friend
    backup_database_to_friend pleroma

    function_check restart_site
    restart_site
}

function restore_remote_pleroma {
    if ! grep -q "pleroma domain" $COMPLETION_FILE; then
        return
    fi
    PLEROMA_DOMAIN_NAME=$(get_completion_param "pleroma domain")
    if [ $PLEROMA_DOMAIN_NAME ]; then
        echo $"Restoring pleroma"
        temp_restore_dir=/root/temppleroma
        pleroma_dir=$PLEROMA_DIR

        function_check pleroma_create_database
        pleroma_create_database

        USE_POSTGRESQL=1
        function_check restore_database_from_friend
        restore_database_from_friend pleroma
        if [ -d $temp_restore_dir ]; then
            rm -rf $temp_restore_dir
        fi

        function_check restore_directory_from_friend
        restore_directory_from_friend $temp_restore_dir pleroma
        if [ -d $temp_restore_dir ]; then
            chown -R pleroma:pleroma $pleroma_dir
            rm -rf $temp_restore_dir
        fi

        pleroma_update_after_restore pleroma ${PLEROMA_DOMAIN_NAME}

        echo $"Restore of pleroma complete"
    fi
}

function remove_pleroma {
    if [ ${#PLEROMA_DOMAIN_NAME} -eq 0 ]; then
        return
    fi
    systemctl stop pleroma
    systemctl disable pleroma
    rm /etc/systemd/system/pleroma.service

    userdel pleroma
    apt-get -yq remove esl-erlang elixir

    function_check remove_nodejs
    remove_nodejs pleroma-backend

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

    if [ -d /var/www/$PLEROMA_DOMAIN_NAME ]; then
        rm -rf /var/www/$PLEROMA_DOMAIN_NAME
    fi
    if [ -f /etc/nginx/sites-available/$PLEROMA_DOMAIN_NAME ]; then
        rm /etc/nginx/sites-available/$PLEROMA_DOMAIN_NAME
    fi
    if [ -d $PLEROMA_DIR ]; then
        rm -rf $PLEROMA_DIR
    fi
    function_check drop_database_postgresql
    drop_database_postgresql
    function_check remove_onion_service
    remove_onion_service pleroma ${PLEROMA_ONION_PORT}
    remove_app pleroma
    remove_completion_param install_pleroma
    sed -i '/pleroma domain/d' $COMPLETION_FILE
    sed -i '/pleroma commit/d' $COMPLETION_FILE

    function_check remove_ddns_domain
    remove_ddns_domain $PLEROMA_DOMAIN_NAME
}

function install_elixir {
    apt-get -yq install wget build-essential

    if [ ! -d $INSTALL_DIR ]; then
        mkdir -p $INSTALL_DIR
    fi

    cd $INSTALL_DIR
    erlang_package=erlang-solutions_1.0_all.deb
    wget https://packages.erlang-solutions.com/$erlang_package
    if [ ! -f $INSTALL_DIR/$erlang_package ]; then
        exit 72853
    fi
    dpkg -i $erlang_package
    apt-get -yq update
    apt-get -yq install esl-erlang
    apt-get -yq install elixir

    if [ ! -f /usr/local/bin/mix ]; then
        echo $'/usr/local/bin/mix not found after elixir installation'
        exit 629352
    fi
}

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

    # We need elixir 1.4+ here, so the debian repo package won't do
    install_elixir

    function_check install_nodejs
    install_nodejs pleroma-backend
    install_postgresql

    if [ ! -d /var/www/$PLEROMA_DOMAIN_NAME ]; then
        mkdir /var/www/$PLEROMA_DOMAIN_NAME
    fi
    if [ -d $PLEROMA_DIR ]; then
        rm -rf $PLEROMA_DIR
    fi


    # get the repo
    if [ -d /repos/pleroma ]; then
        mkdir -p $PLEROMA_DIR
        cp -r -p /repos/pleroma/. $PLEROMA_DIR
        cd $PLEROMA_DIR
        git pull
    else
        function_check git_clone
        git_clone $PLEROMA_REPO $PLEROMA_DIR
    fi

    if [ ! -d $PLEROMA_DIR ]; then
        echo $'Unable to clone pleroma backend repo'
        exit 783523
    fi


    # create user
    useradd -d $PLEROMA_DIR -s /bin/false pleroma


    # checkout the commit
    cd $PLEROMA_DIR
    git checkout $PLEROMA_COMMIT -b $PLEROMA_COMMIT
    set_completion_param "pleroma commit" "$PLEROMA_COMMIT"
    chown -R pleroma:pleroma $PLEROMA_DIR


    # web config
    function_check add_ddns_domain
    add_ddns_domain $PLEROMA_DOMAIN_NAME

    PLEROMA_ONION_HOSTNAME=$(add_onion_service pleroma 80 ${PLEROMA_ONION_PORT})

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

        function_check nginx_disable_sniffing
        nginx_disable_sniffing $PLEROMA_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $pleroma_nginx_site
        echo '' >> $pleroma_nginx_site
        echo '  # Logs' >> $pleroma_nginx_site
        echo '  access_log /dev/null;' >> $pleroma_nginx_site
        echo '  error_log /dev/null;' >> $pleroma_nginx_site
        echo '' >> $pleroma_nginx_site
        echo "  root $PLEROMA_DIR;" >> $pleroma_nginx_site
        echo '' >> $pleroma_nginx_site
        echo '  index index.html;' >> $pleroma_nginx_site
        echo '  location / {' >> $pleroma_nginx_site
        function_check nginx_limits
        nginx_limits $PLEROMA_DOMAIN_NAME '15m'
        echo "    proxy_pass http://localhost:$PLEROMA_PORT;" >> $pleroma_nginx_site
        echo '  }' >> $pleroma_nginx_site
        echo '  include snippets/well-known.conf;' >> $pleroma_nginx_site
        echo '}' >> $pleroma_nginx_site
    else
        echo -n '' > $pleroma_nginx_site
    fi
    echo 'server {' >> $pleroma_nginx_site
    echo "    listen 127.0.0.1:$PLEROMA_ONION_PORT default_server;" >> $pleroma_nginx_site
    echo "    server_name $PLEROMA_ONION_HOSTNAME;" >> $pleroma_nginx_site
    echo '' >> $pleroma_nginx_site
    function_check nginx_compress
    nginx_compress $PLEROMA_DOMAIN_NAME
    echo '' >> $pleroma_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $PLEROMA_DOMAIN_NAME
    echo '' >> $pleroma_nginx_site
    echo '  # Logs' >> $pleroma_nginx_site
    echo '  access_log /dev/null;' >> $pleroma_nginx_site
    echo '  error_log /dev/null;' >> $pleroma_nginx_site
    echo '' >> $pleroma_nginx_site
    echo "  root $PLEROMA_DIR;" >> $pleroma_nginx_site
    echo '' >> $pleroma_nginx_site
    echo '  index index.html;' >> $pleroma_nginx_site
    echo '  location / {' >> $pleroma_nginx_site
    function_check nginx_limits
    nginx_limits $PLEROMA_DOMAIN_NAME '15m'
    echo "    proxy_pass http://localhost:$PLEROMA_PORT;" >> $pleroma_nginx_site
    echo '  }' >> $pleroma_nginx_site
    echo '  include snippets/well-known.conf;' >> $pleroma_nginx_site
    echo '}' >> $pleroma_nginx_site

    function_check create_site_certificate
    create_site_certificate $PLEROMA_DOMAIN_NAME 'yes'

    function_check nginx_ensite
    nginx_ensite $PLEROMA_DOMAIN_NAME

    systemctl restart postgresql
    systemctl restart nginx

    ${PROJECT_NAME}-pass -u $MY_USERNAME -a pleroma -p "$PLEROMA_ADMIN_PASSWORD"

    set_completion_param "pleroma domain" "$PLEROMA_DOMAIN_NAME"


    # back end
    cd $PLEROMA_DIR
    mix deps.get

    function_check pleroma_create_database
    pleroma_create_database

    pleroma_secret=config/dev.secret.exs
    cp config/dev.exs $pleroma_secret
    sed -i "s|username:.*|username: \"pleroma\",|g" $pleroma_secret
    sed -i "s|password:.*|password: \"$PLEROMA_ADMIN_PASSWORD\",|g" $pleroma_secret
    sed -i "s|database:.*|database: \"pleroma\",|g" $pleroma_secret
    sed -i "/config :pleroma, Pleroma.Web.Endpoint/a url: [host: \"$PLEROMA_DOMAIN_NAME\", scheme: \"https\", port: 443]," $pleroma_secret

    pleroma_config=config/config.exs
    sed -i "s|name: .*|name: \"$PLEROMA_TITLE\",|g" $pleroma_config
    sed -i "s|email: .*|email: \"$MY_EMAIL_ADDRESS\",|g" $pleroma_config

    # front end
    install_pleroma_front_end "pleroma" "$PLEROMA_DOMAIN_NAME" "$PLEROMA_BACKGROUND_IMAGE_URL" "$PLEROMA_TITLE"
    install_gnusocial_default_background "gnusocial" "$PLEROMA_DOMAIN_NAME"
    sed -i 's|"theme":.*|"theme": "base16-apathy.css",|g' /var/www/${PLEROMA_DOMAIN_NAME}/htdocs/static/config.json

    if [ $PLEROMA_BACKGROUND_IMAGE_URL ]; then
        pleroma_set_background_image_from_url "$PLEROMA_DOMAIN_NAME" "$PLEROMA_BACKGROUND_IMAGE_URL" "$PLEROMA_TITLE"
    fi


    # daemon
    echo '[Unit]' > /etc/systemd/system/pleroma.service
    echo 'Description=Pleroma social network' >> /etc/systemd/system/pleroma.service
    echo 'After=network.target postgresql.service' >> /etc/systemd/system/pleroma.service
    echo '' >> /etc/systemd/system/pleroma.service
    echo '[Service]' >> /etc/systemd/system/pleroma.service
    echo 'User=pleroma' >> /etc/systemd/system/pleroma.service
    echo "WorkingDirectory=$PLEROMA_DIR"
    echo "Environment=\"HOME=$PLEROMA_DIR\"" >> /etc/systemd/system/pleroma.service
    echo 'ExecStart=/usr/local/bin/mix phx.server' >> /etc/systemd/system/pleroma.service
    echo 'ExecReload=/bin/kill $MAINPID' >> /etc/systemd/system/pleroma.service
    echo 'KillMode=process' >> /etc/systemd/system/pleroma.service
    echo 'Restart=on-failure' >> /etc/systemd/system/pleroma.service
    echo '' >> /etc/systemd/system/pleroma.service
    echo '[Install]' >> /etc/systemd/system/pleroma.service
    echo 'WantedBy=multi-user.target' >> /etc/systemd/system/pleroma.service
    echo 'Alias=pleroma.service' >> /etc/systemd/system/pleroma.service
    systemctl daemon-reload
    systemctl enable pleroma
    systemctl start pleroma

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"