#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Databaseless blogging system
#
# License
# =======
#
# Copyright (C) 2018 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'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

BLUDIT_DOMAIN_NAME=
BLUDIT_CODE=
BLUDIT_ONION_PORT=9361
BLUDIT_REPO="https://github.com/bludit/bludit"
BLUDIT_COMMIT='0e27e31a84421b3e6bd000a77bc89c2dff3c446a'

bludit=(ONION_ONLY
             BLUDIT_DOMAIN_NAME
             BLUDIT_CODE
             DDNS_PROVIDER
             MY_USERNAME)

function logging_on_bludit {
    echo -n ''
}

function logging_off_bludit {
    echo -n ''
}

function remove_user_bludit {
    remove_username="$1"

    "${PROJECT_NAME}-pass" -u "$remove_username" --rmapp bludit
}

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

    "${PROJECT_NAME}-pass" -u "$new_username" -a bludit -p "$new_user_password"
    echo '0'
}

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

    if [[ "$ONION_ONLY" != "no" ]]; then
        BLUDIT_DOMAIN_NAME='bludit.local'
        write_config_param "BLUDIT_DOMAIN_NAME" "$BLUDIT_DOMAIN_NAME"
    else
        interactive_site_details "bludit" "BLUDIT_DOMAIN_NAME" "bludit_CODE"
    fi
    APP_INSTALLED=1
}

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

    read_config_param 'BLUDIT_DOMAIN_NAME'

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

function reconfigure_bludit {
    # This is used if you need to switch identity. Dump old keys and generate new ones
    echo -n ''
}

function upgrade_bludit {
    CURR_BLUDIT_COMMIT=$(get_completion_param "bludit commit")
    if [[ "$CURR_BLUDIT_COMMIT" == "$BLUDIT_COMMIT" ]]; then
        return
    fi

    if grep -q "bludit domain" "$COMPLETION_FILE"; then
        BLUDIT_DOMAIN_NAME=$(get_completion_param "bludit domain")
    fi

    # update to the next commit
    set_repo_commit "/var/www/$BLUDIT_DOMAIN_NAME/htdocs" "bludit commit" "$BLUDIT_COMMIT" $BLUDIT_REPO
    chown -R www-data:www-data "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
}

function backup_local_bludit {
    BLUDIT_DOMAIN_NAME='bludit'
    if grep -q "bludit domain" "$COMPLETION_FILE"; then
        BLUDIT_DOMAIN_NAME=$(get_completion_param "bludit domain")
    fi

    source_directory=/var/www/${BLUDIT_DOMAIN_NAME}/htdocs

    suspend_site "${BLUDIT_DOMAIN_NAME}"

    dest_directory=bludit
    backup_directory_to_usb "$source_directory" $dest_directory

    restart_site
}

function restore_local_bludit {
    if ! grep -q "bludit domain" "$COMPLETION_FILE"; then
        return
    fi
    BLUDIT_DOMAIN_NAME=$(get_completion_param "bludit domain")
    if [ "$BLUDIT_DOMAIN_NAME" ]; then
        temp_restore_dir=/root/tempbludit
        bludit_dir=/var/www/${BLUDIT_DOMAIN_NAME}/htdocs

        restore_directory_from_usb $temp_restore_dir bludit
        if [ -d $temp_restore_dir ]; then
            if [ -d "$temp_restore_dir$bludit_dir" ]; then
                cp -rp "$temp_restore_dir$bludit_dir"/* "$bludit_dir"/
            else
                if [ ! -d "$bludit_dir" ]; then
                    mkdir "$bludit_dir"
                fi
                cp -rp "$temp_restore_dir"/* "$bludit_dir"/
            fi
            chown -R www-data:www-data "$bludit_dir"
            rm -rf $temp_restore_dir
        fi
    fi
}

function backup_remote_bludit {
    BLUDIT_DOMAIN_NAME='bludit'
    if grep -q "bludit domain" "$COMPLETION_FILE"; then
        BLUDIT_DOMAIN_NAME=$(get_completion_param "bludit domain")
    fi

    source_directory=/var/www/${BLUDIT_DOMAIN_NAME}/htdocs

    suspend_site "${BLUDIT_DOMAIN_NAME}"

    dest_directory=bludit
    backup_directory_to_friend "$source_directory" $dest_directory

    restart_site
}

function restore_remote_bludit {
    if ! grep -q "bludit domain" "$COMPLETION_FILE"; then
        return
    fi
    BLUDIT_DOMAIN_NAME=$(get_completion_param "bludit domain")
    if [ "$BLUDIT_DOMAIN_NAME" ]; then
        temp_restore_dir=/root/tempbludit
        bludit_dir=/var/www/${BLUDIT_DOMAIN_NAME}/htdocs

        restore_directory_from_friend $temp_restore_dir bludit
        if [ -d $temp_restore_dir ]; then
            if [ -d "$temp_restore_dir$bludit_dir" ]; then
                cp -rp "$temp_restore_dir$bludit_dir"/* "$bludit_dir"/
            else
                if [ ! -d "$bludit_dir" ]; then
                    mkdir "$bludit_dir"
                fi
                cp -rp $temp_restore_dir/* "$bludit_dir"/
            fi
            chown -R www-data:www-data "$bludit_dir"
            rm -rf $temp_restore_dir
        fi
    fi
}

function remove_bludit {
    nginx_dissite "$BLUDIT_DOMAIN_NAME"
    remove_certs "$BLUDIT_DOMAIN_NAME"

    if [ -d "/var/www/$BLUDIT_DOMAIN_NAME" ]; then
        rm -rf "/var/www/$BLUDIT_DOMAIN_NAME"
    fi
    if [ -f "/etc/nginx/sites-available/$BLUDIT_DOMAIN_NAME" ]; then
        rm "/etc/nginx/sites-available/$BLUDIT_DOMAIN_NAME"
    fi
    remove_onion_service bludit ${BLUDIT_ONION_PORT}
    if grep -q "bludit" /etc/crontab; then
        sed -i "/bludit/d" /etc/crontab
    fi
    remove_app bludit
    remove_completion_param install_bludit
    sed -i '/bludit/d' "$COMPLETION_FILE"

    remove_ddns_domain "$BLUDIT_DOMAIN_NAME"
}

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

    if [ ! -d "/var/www/$BLUDIT_DOMAIN_NAME" ]; then
        mkdir "/var/www/$BLUDIT_DOMAIN_NAME"
    fi
    if [ ! -d "/var/www/$BLUDIT_DOMAIN_NAME/htdocs" ]; then
        if [ -d /repos/bludit ]; then
            mkdir "/var/www/$BLUDIT_DOMAIN_NAME/htdocs"
            cp -r -p /repos/bludit/. "/var/www/$BLUDIT_DOMAIN_NAME/htdocs"
            cd "/var/www/$BLUDIT_DOMAIN_NAME/htdocs" || exit 324687356
            git pull
        else
            git_clone $BLUDIT_REPO "/var/www/$BLUDIT_DOMAIN_NAME/htdocs"
        fi

        if [ ! -d "/var/www/$BLUDIT_DOMAIN_NAME/htdocs" ]; then
            echo $'Unable to clone bludit repo'
            exit 87525
        fi
    fi

    cd "/var/www/$BLUDIT_DOMAIN_NAME/htdocs" || exit 36587356
    git checkout $BLUDIT_COMMIT -b $BLUDIT_COMMIT
    set_completion_param "bludit commit" "$BLUDIT_COMMIT"

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

    add_ddns_domain "$BLUDIT_DOMAIN_NAME"

    BLUDIT_ONION_HOSTNAME=$(add_onion_service bludit 80 ${BLUDIT_ONION_PORT})

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

        nginx_security_options "$BLUDIT_DOMAIN_NAME"

        { echo '  add_header Strict-Transport-Security max-age=15768000;';
          echo '';
          echo '  # Logs';
          echo '  access_log /dev/null;';
          echo '  error_log /dev/null;';
          echo '';
          echo '  # Root';
          echo "  root /var/www/$BLUDIT_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  index index.php;';
          echo '  location ~ \.php {';
          echo '    include snippets/fastcgi-php.conf;';
          echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;';
          echo '    fastcgi_read_timeout 30;';
          echo '  }';
          echo '';
          echo '  # Location';
          echo '  location / {'; } >> "$bludit_nginx_site"
        nginx_limits "$BLUDIT_DOMAIN_NAME" '15m'
        { echo "    try_files \$uri \$uri/ /index.html;";
          echo '  }';
          echo '}'; } >> "$bludit_nginx_site"
    else
        echo -n '' > "$bludit_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$BLUDIT_ONION_PORT default_server;";
      echo "    server_name $BLUDIT_ONION_HOSTNAME;";
      echo ''; } >> "$bludit_nginx_site"
    nginx_compress "$BLUDIT_DOMAIN_NAME"
    echo '' >> "$bludit_nginx_site"
    nginx_security_options "$BLUDIT_DOMAIN_NAME"
    { echo '';
      echo '  # Logs';
      echo '  access_log /dev/null;';
      echo '  error_log /dev/null;';
      echo '';
      echo '  # Root';
      echo "  root /var/www/$BLUDIT_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  index index.php;';
      echo '  location ~ \.php {';
      echo '    include snippets/fastcgi-php.conf;';
      echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;';
      echo '    fastcgi_read_timeout 30;';
      echo '  }';
      echo '';
      echo '  # Location';
      echo '  location / {'; } >> "$bludit_nginx_site"
    nginx_limits "$BLUDIT_DOMAIN_NAME" '15m'
    { echo "    try_files \$uri \$uri/ index.html;";
      echo '  }';
      echo '}'; } >> "$bludit_nginx_site"

    configure_php

    create_site_certificate "$BLUDIT_DOMAIN_NAME" 'yes'

    nginx_ensite "$BLUDIT_DOMAIN_NAME"

    systemctl restart php7.0-fpm
    systemctl restart nginx

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a bludit -p "$BLUDIT_ADMIN_PASSWORD"
    set_completion_param "bludit domain" "$BLUDIT_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"