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

VARIANTS="full writer"

FULLBLOG_DOMAIN_NAME=
FULLBLOG_CODE=
FULLBLOG_ONION_PORT=8086
FULLBLOG_REPO="https://github.com/danpros/htmly"
FULLBLOG_COMMIT='bf5fe9486160be4da86d8987d3e5c977e1dc6d32'
MY_BLOG_TITLE="My Blog"
MY_BLOG_SUBTITLE="Another ${PROJECT_NAME} Blog"

function configure_interactive_blog {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Change blog avatar" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $"Enter a URL for an image. It should be approximately a square image." 8 75 2>$data
    sel=$?
    case $sel in
        0)
            IMAGE_URL=$(<$data)
            if [ ${#IMAGE_URL} -gt 5 ]; then
                clear
                ${PROJECT_NAME}-blog -a $IMAGE_URL
                if [ "$?" = "0" ]; then
                    dialog --title $"Change blog avatar" \
                           --msgbox $"Your blog avatar has been changed" 6 40
                fi
            fi
            ;;
    esac
}

function install_interactive_blog {
    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi
    if grep -q "ONION_ONLY" $CONFIGURATION_FILE; then
        ONION_ONLY=$(grep "ONION_ONLY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "MY_BLOG_TITLE" $CONFIGURATION_FILE; then
        MY_BLOG_TITLE=$(grep "MY_BLOG_TITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "FULLBLOG_CODE" $CONFIGURATION_FILE; then
        FULLBLOG_CODE=$(grep "FULLBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "DDNS_PROVIDER" $CONFIGURATION_FILE; then
        DDNS_PROVIDER=$(grep "DDNS_PROVIDER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi

    if [[ $ONION_ONLY != "no" ]]; then
        MY_BLOG_TITLE='My Blog'
        FULLBLOG_DOMAIN_NAME='blog.local'
    else
        FULLBLOG_DETAILS_COMPLETE=
        while [ ! $FULLBLOG_DETAILS_COMPLETE ]
        do
            data=$(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 $"Blog Configuration" \
                       --form $"\nPlease enter your blog details:" 11 55 4 \
                       $"Title:" 1 1 "$(grep 'MY_BLOG_TITLE' temp.cfg | awk -F '=' '{print $2}')" 1 16 33 40 \
                       $"Domain:" 2 1 "$(grep 'FULLBLOG_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 2 16 33 40 \
                       $"Code:" 3 1 "$(grep 'FULLBLOG_CODE' temp.cfg | awk -F '=' '{print $2}')" 3 16 33 255 \
                       2> $data
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Blog Configuration" \
                       --form $"\nPlease enter your blog details:" 11 55 3 \
                       $"Title:" 1 1 "$(grep 'MY_BLOG_TITLE' temp.cfg | awk -F '=' '{print $2}')" 1 16 33 40 \
                       $"Domain:" 2 1 "$(grep 'FULLBLOG_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 2 16 33 40 \
                       2> $data
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            MY_BLOG_TITLE=$(cat $data | sed -n 1p)
            FULLBLOG_DOMAIN_NAME=$(cat $data | sed -n 2p)
            if [ $FULLBLOG_DOMAIN_NAME ]; then
                if [[ $FULLBLOG_DOMAIN_NAME == "$WIKI_DOMAIN_NAME" ]]; then
                    FULLBLOG_DOMAIN_NAME=""
                fi
                TEST_DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME
                validate_domain_name
                if [[ $TEST_DOMAIN_NAME != $FULLBLOG_DOMAIN_NAME ]]; then
                    FULLBLOG_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        FULLBLOG_CODE=$(cat $data | sed -n 3p)
                        validate_freedns_code "$FULLBLOG_CODE"
                        if [ ! $VALID_CODE ]; then
                            FULLBLOG_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $FULLBLOG_DOMAIN_NAME ]; then
                FULLBLOG_DETAILS_COMPLETE="yes"
            fi
        done

        if grep -q "MY_BLOG_TITLE=" $CONFIGURATION_FILE; then
            sed -i "s|MY_BLOG_TITLE=.*|MY_BLOG_TITLE=$MY_BLOG_TITLE|g" $CONFIGURATION_FILE
        else
            echo "MY_BLOG_TITLE=$MY_BLOG_TITLE" >> $CONFIGURATION_FILE
        fi
        if grep -q "FULLBLOG_DOMAIN_NAME=" $CONFIGURATION_FILE; then
            sed -i "s|FULLBLOG_DOMAIN_NAME=.*|FULLBLOG_DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME|g" $CONFIGURATION_FILE
        else
            echo "FULLBLOG_DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME" >> $CONFIGURATION_FILE
        fi
        if grep -q "FULLBLOG_CODE=" $CONFIGURATION_FILE; then
            sed -i "s|FULLBLOG_CODE=.*|FULLBLOG_CODE=$FULLBLOG_CODE|g" $CONFIGURATION_FILE
        else
            echo "FULLBLOG_CODE=$FULLBLOG_CODE" >> $CONFIGURATION_FILE
        fi
    fi
}

function change_password_blog {
    if ! grep -q "Blog domain:" $COMPLETION_FILE; then
        return
        echo "Blog domain:$FULLBLOG_DOMAIN_NAME" >> $COMPLETION_FILE
    fi
    FULLBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "Blog domain" | head -n 1 | awk -F ':' '{print $2}')

    BLOG_USERNAME="$1"
    BLOG_PASSWORD="$2"
    if [ ${#BLOG_PASSWORD} -lt 8 ]; then
        echo $'Blog password is too short'
        return
    fi
    BLOG_PASSWORD_HASH=$(${PROJECT_NAME}-sec --bloghash "$BLOG_PASSWORD")
    if [ ${#BLOG_PASSWORD_HASH} -lt 8 ]; then
        echo $'Blog admin password could not be hashed'
        exit 625728
    fi
    sed -i "s|password =.*|password = $BLOG_PASSWORD_HASH|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$BLOG_USERNAME.ini
}

function reconfigure_blog {
    echo -n ''
}

function upgrade_blog {
    if ! grep -Fxq "install_blog" $COMPLETION_FILE; then
        return
    fi
    function_check set_repo_commit
    set_repo_commit /var/www/$FULLBLOG_DOMAIN_NAME/htdocs "Blog commit" "$FULLBLOG_COMMIT" $FULLBLOG_REPO

    # update blog avatar
    ${PROJECT_NAME}-blog
}

function backup_local_blog {
    FULLBLOG_DOMAIN_NAME='blog'
    if grep -q "Blog domain" $COMPLETION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "Blog domain" | awk -F ':' '{print $2}')
    fi

    source_directory=/var/www/${FULLBLOG_DOMAIN_NAME}/htdocs
    if [ -d $source_directory ]; then
        dest_directory=blog
        echo $"Backing up $source_directory to $dest_directory"

        function_check suspend_site
        suspend_site ${FULLBLOG_DOMAIN_NAME}

        function_check backup_directory_to_usb
        backup_directory_to_usb $source_directory $dest_directory

        function_check restart_site
        restart_site

        echo $"Backup to $dest_directory complete"
    fi
}

function restore_local_blog {
    FULLBLOG_DOMAIN_NAME='blog'
    if grep -q "Blog domain" $COMPLETION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "Blog domain" | awk -F ':' '{print $2}')
    fi
    if [ $FULLBLOG_DOMAIN_NAME ]; then
        echo $"Restoring blog installation"
        temp_restore_dir=/root/tempblog
        restore_directory_from_usb $temp_restore_dir blog
        rm -rf /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs
        cp -r $temp_restore_dir/var/www/${FULLBLOG_DOMAIN_NAME}/htdocs /var/www/${FULLBLOG_DOMAIN_NAME}/
        if [ ! "$?" = "0" ]; then
            set_user_permissions
            backup_unmount_drive
            exit 593
        fi
        rm -rf $temp_restore_dir
        if [ ! -d /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content ]; then
            echo $"No content directory found after restoring blog"
            set_user_permissions
            backup_unmount_drive
            exit 287
        fi
        chown -R www-data:www-data /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs
        # Ensure that the bundled SSL cert is being used
        if [ -f /etc/ssl/certs/${FULLBLOG_DOMAIN_NAME}.bundle.crt ]; then
            sed -i "s|${FULLBLOG_DOMAIN_NAME}.crt|${FULLBLOG_DOMAIN_NAME}.bundle.crt|g" /etc/nginx/sites-available/${FULLBLOG_DOMAIN_NAME}
        fi
        for d in /home/*/ ; do
            USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
            if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
                if [ -d /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/uncategorized/post ]; then
                    mv /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/*.md /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/uncategorized/post
                fi
            fi
        done
        if [ -d /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME} ]; then
            ln -s /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME}/privkey.pem /etc/ssl/private/${FULLBLOG_DOMAIN_NAME}.key
            ln -s /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME}/fullchain.pem /etc/ssl/certs/${FULLBLOG_DOMAIN_NAME}.pem
        fi
    fi
}

function backup_remote_blog {
    if grep -q "Blog domain" $COMPLETION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "Blog domain" | awk -F ':' '{print $2}')
        temp_backup_dir=/var/www/${FULLBLOG_DOMAIN_NAME}/htdocs
        if [ -d $temp_backup_dir ]; then
            echo $"Backing up blog"
            backup_directory_to_friend $temp_backup_dir blog
            echo $"Backup of blog complete"
        else
            echo $"Blog domain specified but not found in $temp_backup_dir"
            exit 2578
        fi
    fi
}

function restore_remote_blog {
    if [ -d $SERVER_DIRECTORY/backup/blog ]; then
        FULLBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "Blog domain" | awk -F ':' '{print $2}')
        echo $"Restoring blog installation $FULLBLOG_DOMAIN_NAME"
        temp_restore_dir=/root/tempblog
        mkdir $temp_restore_dir
        function_check restore_directory_from_friend
        restore_directory_from_friend $temp_restore_dir blog
        rm -rf /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs
        cp -r $temp_restore_dir/var/www/${FULLBLOG_DOMAIN_NAME}/htdocs /var/www/${FULLBLOG_DOMAIN_NAME}/
        if [ ! "$?" = "0" ]; then
            exit 593
        fi
        rm -rf $temp_restore_dir
        if [ ! -d /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content ]; then
            echo $"No content directory found after restoring blog"
            exit 287
        fi
        # Ensure that the bundled SSL cert is being used
        if [ -f /etc/ssl/certs/${FULLBLOG_DOMAIN_NAME}.bundle.crt ]; then
            sed -i "s|${FULLBLOG_DOMAIN_NAME}.crt|${FULLBLOG_DOMAIN_NAME}.bundle.crt|g" /etc/nginx/sites-available/${FULLBLOG_DOMAIN_NAME}
        fi
        for d in /home/*/ ; do
            USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
            if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
                if [ -d /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/uncategorized/post ]; then
                    mv /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/*.md /var/www/${FULLBLOG_DOMAIN_NAME}/htdocs/content/$USERNAME/blog/uncategorized/post
                fi
            fi
        done
        if [ -d /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME} ]; then
            ln -s /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME}/privkey.pem /etc/ssl/private/${FULLBLOG_DOMAIN_NAME}.key
            ln -s /etc/letsencrypt/live/${FULLBLOG_DOMAIN_NAME}/fullchain.pem /etc/ssl/certs/${FULLBLOG_DOMAIN_NAME}.pem
        fi
        echo $"Restore of blog complete"
    fi
}

function remove_blog {
    if [[ $(app_is_installed blog) == "0" ]]; then
        return
    fi
    if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    nginx_dissite $FULLBLOG_DOMAIN_NAME
    if [ -f /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME ]; then
        rm -f /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    fi
    if [ -d /var/www/$FULLBLOG_DOMAIN_NAME ]; then
        rm -rf /var/www/$FULLBLOG_DOMAIN_NAME
    fi
    if [ $FULLBLOG_CODE ]; then
        if [ -f /usr/bin/dynamicdns ]; then
            sed -i "/$FULLBLOG_DOMAIN_NAME/d" /usr/bin/dynamicdns
            sed -i "/$FULLBLOG_CODE/d" /usr/bin/dynamicdns
        fi
    fi
    function_check remove_onion_service
    remove_onion_service blog ${FULLBLOG_ONION_PORT}
    sed -i '/install_blog/d' $COMPLETION_FILE
    sed -i '/Blog .*/d' $COMPLETION_FILE
}

function get_blog_admin_password {
    if [ -f /home/$MY_USERNAME/README ]; then
        if grep -q "Your blog password is" /home/$MY_USERNAME/README; then
            FULLBLOG_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Your blog password is" | awk -F ':' '{print $2}' | sed 's/^ *//')
        fi
    fi
}

function install_blog_social_networks {
    # set social networks
    if grep -q "social.hubzilla" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini; then
        sed -i "s|;social.hubzilla|social.hubzilla|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
        sed -i "s|social.hubzilla.*|social.hubzilla = \"$HUBZILLA_DOMAIN_NAME\"|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    fi
    if grep -q "social.gnusocial" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini; then
        sed -i "s|;social.gnusocial|social.gnusocial|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
        sed -i "s|social.gnusocial.*|social.gnusocial = \"$MICROBLOG_DOMAIN_NAME\"|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    fi

    # clear proprietary social network strings
    sed -i 's|social.facebook.*|social.facebook = ""|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i 's|social.twitter.*|social.twitter = ""|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i 's|social.google.*|social.google = ""|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
}

function install_blog_user {
    # create a user password
    function_check get_blog_admin_password
    get_blog_admin_password
    if [ ! $FULLBLOG_ADMIN_PASSWORD ]; then
        if [ -f $IMAGE_PASSWORD_FILE ]; then
            FULLBLOG_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
        else
            FULLBLOG_ADMIN_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
        fi
        echo '' >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo $'HTMLy Blog' >> /home/$MY_USERNAME/README
        echo '==========' >> /home/$MY_USERNAME/README
        echo $"Your blog username: $MY_USERNAME" >> /home/$MY_USERNAME/README
        echo $"Your blog password is: $FULLBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
        if [[ $ONION_ONLY == 'no' ]]; then
            echo $"Log into your blog at https://$FULLBLOG_DOMAIN_NAME/login" >> /home/$MY_USERNAME/README
        fi
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    fi

    # create a user
    FULLBLOG_ADMIN_PASSWORD_HASH=$(${PROJECT_NAME}-sec --bloghash "$FULLBLOG_ADMIN_PASSWORD")
    if [ ${#FULLBLOG_ADMIN_PASSWORD_HASH} -lt 8 ]; then
        echo $'Blog admin password could not be hashed'
        exit 625728
    fi
    echo ';Password' > /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
    echo "password = $FULLBLOG_ADMIN_PASSWORD_HASH" >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
    echo 'encryption = password_hash' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
    echo ';Role' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
    echo 'role = admin' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
}

function install_blog_settings {
    cp /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini.example /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i "s|site.url.*|site.url = '/'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i "s|blog.title.*|blog.title = '$MY_BLOG_TITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i "s|blog.tagline.*|blog.tagline = '$MY_BLOG_SUBTITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i 's|timezone.*|timezone = "Europe/London"|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
    sed -i "s|Your name|$MY_NAME|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
}

function install_blog_website {
    function_check nginx_http_redirect
    nginx_http_redirect $FULLBLOG_DOMAIN_NAME
    echo 'server {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    access_log off;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    error_log /var/log/nginx/${FULLBLOG_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    proxy_read_timeout 86400s;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    function_check nginx_ssl
    nginx_ssl $FULLBLOG_DOMAIN_NAME
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $FULLBLOG_DOMAIN_NAME
    echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    function_check nginx_limits
    nginx_limits $FULLBLOG_DOMAIN_NAME
    echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
}

function install_blog_website_onion {
    echo 'server {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    listen 127.0.0.1:${FULLBLOG_ONION_PORT} default_server;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    access_log off;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    error_log /var/log/nginx/${FULLBLOG_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    proxy_read_timeout 86400s;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $FULLBLOG_DOMAIN_NAME
    echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    function_check nginx_limits
    nginx_limits $FULLBLOG_DOMAIN_NAME
    echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    function_check nginx_limits
    nginx_limits $FULLBLOG_DOMAIN_NAME
    echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
}

function install_blog_from_repo {
    if [ ! -d /var/www/$FULLBLOG_DOMAIN_NAME ]; then
        mkdir /var/www/$FULLBLOG_DOMAIN_NAME
    fi

    cd /var/www/$FULLBLOG_DOMAIN_NAME
    git_clone $FULLBLOG_REPO htdocs
    cd htdocs
    git checkout $FULLBLOG_COMMIT -b $FULLBLOG_COMMIT
    if ! grep -q "Blog commit" $COMPLETION_FILE; then
        echo "Blog commit:$FULLBLOG_COMMIT" >> $COMPLETION_FILE
    else
        sed -i "s/Blog commit.*/Blog commit:$FULLBLOG_COMMIT/g" $COMPLETION_FILE
    fi
}

function install_blog {
    if [[ $(app_is_installed blog) == "1" ]]; then
        return
    fi

    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi
    if grep -q "ONION_ONLY" $CONFIGURATION_FILE; then
        ONION_ONLY=$(grep "ONION_ONLY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
        FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "FULLBLOG_CODE" $CONFIGURATION_FILE; then
        FULLBLOG_CODE=$(grep "FULLBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "MY_BLOG_TITLE" $CONFIGURATION_FILE; then
        MY_BLOG_TITLE=$(grep "MY_BLOG_TITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "DDNS_PROVIDER" $CONFIGURATION_FILE; then
        DDNS_PROVIDER=$(grep "DDNS_PROVIDER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi
    if grep -q "MY_USERNAME" $CONFIGURATION_FILE; then
        MY_USERNAME=$(grep "MY_USERNAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
    fi

    if [ ! $FULLBLOG_DOMAIN_NAME ]; then
        echo $'The blog domain name was not specified'
        exit 5062
    fi

    # for the avatar changing command
    apt-get -y install imagemagick

    function_check install_blog_from_repo
    install_blog_from_repo

    if [[ $ONION_ONLY == "no" ]]; then
        function_check install_blog_website
        install_blog_website
    else
        echo -n '' > /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
    fi
    function_check install_blog_website_onion
    install_blog_website_onion

    function_check create_site_certificate
    create_site_certificate $FULLBLOG_DOMAIN_NAME 'yes'

    function_check configure_php
    configure_php

    function_check install_blog_settings
    install_blog_settings

    function_check install_blog_social_networks
    install_blog_social_networks

    function_check install_blog_user
    install_blog_user

    chown -R www-data:www-data /var/www/$FULLBLOG_DOMAIN_NAME/htdocs

    FULLBLOG_ONION_HOSTNAME=$(add_onion_service blog 80 ${FULLBLOG_ONION_PORT})

    function_check nginx_ensite
    nginx_ensite $FULLBLOG_DOMAIN_NAME

    systemctl restart php5-fpm
    systemctl restart nginx

    if ! grep -q "Blog onion domain" /home/$MY_USERNAME/README; then
        echo $"Blog onion domain: ${FULLBLOG_ONION_HOSTNAME}" >> /home/$MY_USERNAME/README
        echo $"Log into your blog at https://${FULLBLOG_ONION_HOSTNAME}/login" >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    fi

    function_check add_ddns_domain
    add_ddns_domain $FULLBLOG_DOMAIN_NAME

    if ! grep -q "Blog domain:" $COMPLETION_FILE; then
        echo "Blog domain:$FULLBLOG_DOMAIN_NAME" >> $COMPLETION_FILE
    fi

    install_completed blog
}

# NOTE: deliberately no exit 0