#!/bin/bash
#
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# 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
NOT_ON_ARM=1

ROCKETCHAT_DOMAIN_NAME=
ROCKETCHAT_CODE=
ROCKETCHAT_ONION_PORT=9722
ROCKETCHAT_PORT_INTERNAL=3000

ROCKETCHAT_SHORT_DESCRIPTION=$'Chat system'
ROCKETCHAT_DESCRIPTION=$'Chat system'
ROCKETCHAT_MOBILE_APP_URL=

rocketchat_variables=(ONION_ONLY
                      ROCKETCHAT_DOMAIN_NAME
                      ROCKETCHAT_CODE
                      DDNS_PROVIDER
                      MY_USERNAME)

function logging_on_rocketchat {
    echo -n ''
}

function logging_off_rocketchat {
    echo -n ''
}

function remove_user_rocketchat {
    remove_username="$1"

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

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

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

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

    if [[ "$ONION_ONLY" != "no" ]]; then
        ROCKETCHAT_DOMAIN_NAME='rocketchat.local'
        write_config_param "ROCKETCHAT_DOMAIN_NAME" "$ROCKETCHAT_DOMAIN_NAME"
    else
        interactive_site_details "rocketchat" "ROCKETCHAT_DOMAIN_NAME" "ROCKETCHAT_CODE"
    fi
    APP_INSTALLED=1
}

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

    read_config_param 'ROCKETCHAT_DOMAIN_NAME'

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

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

function upgrade_rocketchat {
    echo -n ''
}

function backup_local_rocketchat {
    ROCKETCHAT_DOMAIN_NAME='rocketchat'
    if grep -q "rocketchat domain" "$COMPLETION_FILE"; then
        ROCKETCHAT_DOMAIN_NAME=$(get_completion_param "rocketchat domain")
    fi

    source_directory=/var/snap/rocketchat-server

    suspend_site "${ROCKETCHAT_DOMAIN_NAME}"

    systemctl stop rocketchat

    dest_directory=rocketchat
    backup_directory_to_usb "$source_directory" $dest_directory

    restart_site
    systemctl start rocketchat
}

function restore_local_rocketchat {
    if ! grep -q "rocketchat domain" "$COMPLETION_FILE"; then
        return
    fi
    ROCKETCHAT_DOMAIN_NAME=$(get_completion_param "rocketchat domain")
    if [ ! "$ROCKETCHAT_DOMAIN_NAME" ]; then
        return
    fi
    suspend_site "${ROCKETCHAT_DOMAIN_NAME}"
    systemctl stop rocketchat

    temp_restore_dir=/root/temprocketchat
    rocketchat_dir=/var/snap/rocketchat-server

    restore_directory_from_usb $temp_restore_dir rocketchat
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$rocketchat_dir" ]; then
            cp -rp "$temp_restore_dir$rocketchat_dir"/* "$rocketchat_dir"/
        else
            if [ ! -d "$rocketchat_dir" ]; then
                mkdir "$rocketchat_dir"
            fi
            cp -rp "$temp_restore_dir"/* "$rocketchat_dir"/
        fi
        rm -rf $temp_restore_dir
    fi
    systemctl start rocketchat

    restart_site
}

function backup_remote_rocketchat {
    ROCKETCHAT_DOMAIN_NAME='rocketchat'
    if grep -q "rocketchat domain" "$COMPLETION_FILE"; then
        ROCKETCHAT_DOMAIN_NAME=$(get_completion_param "rocketchat domain")
    fi

    source_directory=/var/snap/rocketchat-server

    suspend_site "${ROCKETCHAT_DOMAIN_NAME}"
    systemctl stop rocketchat

    dest_directory=rocketchat
    backup_directory_to_friend "$source_directory" $dest_directory

    systemctl start rocketchat

    restart_site
}

function restore_remote_rocketchat {
    if ! grep -q "rocketchat domain" "$COMPLETION_FILE"; then
        return
    fi
    ROCKETCHAT_DOMAIN_NAME=$(get_completion_param "rocketchat domain")
    if [ ! "$ROCKETCHAT_DOMAIN_NAME" ]; then
        return
    fi
    suspend_site "${ROCKETCHAT_DOMAIN_NAME}"
    systemctl stop rocketchat

    temp_restore_dir=/root/temprocketchat
    rocketchat_dir=/var/snap/rocketchat-server

    restore_directory_from_friend $temp_restore_dir rocketchat
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$rocketchat_dir" ]; then
            cp -rp "$temp_restore_dir$rocketchat_dir"/* "$rocketchat_dir"/
        else
            if [ ! -d "$rocketchat_dir" ]; then
                mkdir "$rocketchat_dir"
            fi
            cp -rp $temp_restore_dir/* "$rocketchat_dir"/
        fi
        rm -rf $temp_restore_dir
    fi
    systemctl start rocketchat

    restart_site
}

function remove_rocketchat {
    nginx_dissite "$ROCKETCHAT_DOMAIN_NAME"
    remove_certs "$ROCKETCHAT_DOMAIN_NAME"

    remove_nodejs rocketchat

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

    remove_ddns_domain "$ROCKETCHAT_DOMAIN_NAME"

    remove_snap rocketchat-server
}

function install_rocketchat {
    install_snap rocketchat-server

    install_nodejs rocketchat
    if [ ! "$ROCKETCHAT_DOMAIN_NAME" ]; then
        echo $'No domain name was given'
        exit 3568356
    fi

    if [ -d "/var/www/$ROCKETCHAT_DOMAIN_NAME/htdocs" ]; then
        rm -rf "/var/www/$ROCKETCHAT_DOMAIN_NAME/htdocs"
    fi
    mkdir -p "/var/www/$ROCKETCHAT_DOMAIN_NAME/htdocs"

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

    add_ddns_domain "$ROCKETCHAT_DOMAIN_NAME"

    ROCKETCHAT_ONION_HOSTNAME=$(add_onion_service rocketchat 80 "${ROCKETCHAT_ONION_PORT}")

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

        nginx_security_options "$ROCKETCHAT_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/$ROCKETCHAT_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  index index.html;';
          echo '  # Location';
          echo '  location / {'; } >> "$rocketchat_nginx_site"
        nginx_limits "$ROCKETCHAT_DOMAIN_NAME" '15m'
        { echo "    proxy_pass http://localhost:$ROCKETCHAT_PORT_INTERNAL;";
          echo '    proxy_http_version 1.1;';
          echo "    proxy_set_header Upgrade \$http_upgrade;";
          echo "    proxy_set_header Connection \"upgrade\";"
          echo "    proxy_set_header Host \$http_host;"
          echo '';
          echo "    proxy_set_header X-Real-IP \$remote_addr;";
          echo "    proxy_set_header X-Forward-For \$proxy_add_x_forwarded_for;";
          echo '    proxy_set_header X-Forward-Proto http;';
          echo '    proxy_set_header X-Nginx-Proxy true;';
          echo '';
          echo '    proxy_redirect off;';
          echo '  }';
          echo '}'; } >> "$rocketchat_nginx_site"
    else
        echo -n '' > "$rocketchat_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$ROCKETCHAT_ONION_PORT default_server;";
      echo "    server_name $ROCKETCHAT_ONION_HOSTNAME;";
      echo ''; } >> "$rocketchat_nginx_site"
    nginx_compress "$ROCKETCHAT_DOMAIN_NAME"
    echo '' >> "$rocketchat_nginx_site"
    nginx_security_options "$ROCKETCHAT_DOMAIN_NAME"
    { echo '';
      echo '  # Logs';
      echo '  access_log /dev/null;';
      echo '  error_log /dev/null;';
      echo '';
      echo '  # Root';
      echo "  root /var/www/$ROCKETCHAT_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  index index.html;';
      echo '  # Location';
      echo '  location / {'; } >> "$rocketchat_nginx_site"
    nginx_limits "$ROCKETCHAT_DOMAIN_NAME" '15m'
    { echo "    proxy_pass http://localhost:$ROCKETCHAT_PORT_INTERNAL;";
      echo '    proxy_http_version 1.1;';
      echo "    proxy_set_header Upgrade \$http_upgrade;";
      echo "    proxy_set_header Connection \"upgrade\";"
      echo "    proxy_set_header Host \$http_host;"
      echo '';
      echo "    proxy_set_header X-Real-IP \$remote_addr;";
      echo "    proxy_set_header X-Forward-For \$proxy_add_x_forwarded_for;";
      echo '    proxy_set_header X-Forward-Proto http;';
      echo '    proxy_set_header X-Nginx-Proxy true;';
      echo '';
      echo '    proxy_redirect off;';
      echo '  }';
      echo '}'; } >> "$rocketchat_nginx_site"

    # If content security is enabled then the https site won't load
    sed -i 's|add_header Content-Security-Policy|#add_header Content-Security-Policy|g' "$rocketchat_nginx_site"

    create_site_certificate "$ROCKETCHAT_DOMAIN_NAME" 'yes'

    nginx_ensite "$ROCKETCHAT_DOMAIN_NAME"

    systemctl restart nginx

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a rocketchat -p "$ROCKETCHAT_ADMIN_PASSWORD"
    set_completion_param "rocketchat domain" "$ROCKETCHAT_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"