#!/bin/bash
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# License
# =======
#
# Copyright (C) 2018-2019 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'

APP_CATEGORY=publishing

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1
REQUIRES_APP=

BLUDIT_DOMAIN_NAME=
BLUDIT_CODE=
BLUDIT_ONION_PORT=9844
BLUDIT_VERSION='3.7.1'
BLUDIT_DOWNLOAD='https://www.bludit.com/releases'

BLUDIT_THEME_NAME='zerojs'
BLUDIT_THEME_REPO="https://code.freedombone.net/bashrc/${BLUDIT_THEME_NAME}"
BLUDIT_THEME_COMMIT='bab2e31d5a'

BLUDIT_SHORT_DESCRIPTION=$'Markdown blogging'
BLUDIT_DESCRIPTION=$'Simple Markdown blogging'
BLUDIT_MOBILE_APP_URL=

bludit_variables=(ONION_ONLY
                  BLUDIT_DOMAIN_NAME
                  BLUDIT_CODE
                  DDNS_PROVIDER
                  MY_USERNAME)

function bludit_remove_bad_links {
    bludit_domain=$BLUDIT_DOMAIN_NAME
    if [[ "$ONION_ONLY" != 'no' ]]; then
        bludit_domain=$(cat /var/lib/tor/hidden_service_bludit/hostname)
    fi

    if [ ! "$BLUDIT_DOMAIN_NAME" ]; then
        read_config_param BLUDIT_DOMAIN_NAME
    fi
    bludit_path="/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
    if [ -f "$bludit_path/bl-plugins/simplemde/js/simplemde.min.js" ]; then
        if grep -q 'cdn.jsdelivr.net' "$bludit_path/bl-plugins/simplemde/js/simplemde.min.js"; then
            sed -i "s|cdn.jsdelivr.net|${bludit_domain}|g" "$bludit_path/bl-plugins/simplemde/js/simplemde.min.js"
        fi
        if grep -q 'jsdelivr.net' "$bludit_path/bl-plugins/simplemde/js/simplemde.min.js"; then
            sed -i "s|jsdelivr.net|${bludit_domain}|g" "$bludit_path/bl-plugins/simplemde/js/simplemde.min.js"
        fi
    fi
}

function logging_on_bludit {
    echo -n ''
}

function logging_off_bludit {
    echo -n ''
}

function remove_user_bludit {
    remove_username="$1"

    # TODO: remove user
    "${PROJECT_NAME}-pass" -u "$remove_username" --rmapp bludit
}

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

    # TODO: add user
    # See users.class.php function add($args)
    "${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 bludit_install_from_download {
    if [ ! "$BLUDIT_VERSION" ]; then
        exit 32
    fi
    # shellcheck disable=SC2001
    bludit_path="/var/www/${BLUDIT_DOMAIN_NAME}"/bludit-$(echo "$BLUDIT_VERSION" | sed 's|\.|-|g')
    if [ -d "$bludit_path" ]; then
        rm -rf "$bludit_path"
    fi
    if [ -f "$bludit_path".zip ]; then
        rm "$bludit_path".zip
    fi
    # shellcheck disable=SC2001
    bludit_download_zip=bludit-$(echo "$BLUDIT_VERSION" | sed 's|\.|-|g').zip
    url=${BLUDIT_DOWNLOAD}/${bludit_download_zip}
    cd "/var/www/${BLUDIT_DOMAIN_NAME}" || exit 36
    if [ -f "/repos/${bludit_download_zip}" ]; then
        cp "/repos/${bludit_download_zip}" .
    else
        wget "$url"
    fi
    # shellcheck disable=SC2001,SC2046
    unzip "${bludit_path}".zip
    if [ ! -d "$bludit_path" ]; then
        echo $"Unable to download or extract bludit from $url"
        exit 26
    fi
    if [ -d "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev" ]; then
        rm -rf "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev"
    fi
    mv "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs" "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev"
    mv "$bludit_path" "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
    if [ ! -d "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev/migrations" ]; then
        cp -r "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev/bl-content"/* "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-content/"
    else
        cp -r "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs_prev/migrations/bl-content"/* "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-content/"
    fi
    chmod g+w "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
    chown -R www-data:www-data "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
    rm "${bludit_path}".zip
    install_bludit_theme
    set_completion_param "bludit version" "$BLUDIT_VERSION"
}

function upgrade_bludit {
    if [ ! "$BLUDIT_VERSION" ]; then
        return
    fi

    install_bludit_theme
    bludit_remove_bad_links

    CURR_BLUDIT_VERSION=$(get_completion_param "bludit version")
    if [[ "$CURR_BLUDIT_VERSION" == "$BLUDIT_VERSION" ]]; then
        return
    fi

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

    if [[ "$CURR_BLUDIT_VERSION" == "2."* ]]; then
        if [ -d "/var/www/${BLUDIT_DOMAIN_NAME}/bludit-scripts" ]; then
            rm -rf "/var/www/${BLUDIT_DOMAIN_NAME}/bludit-scripts"
        fi
        cd "/var/www/${BLUDIT_DOMAIN_NAME}" || exit 36
        git clone https://github.com/anaggh/bludit-scripts
        if [ ! -f "/var/www/${BLUDIT_DOMAIN_NAME}/bludit-scripts/migration-v2-to-v3/migrate.php" ]; then
            exit 36
        fi
        cp "/var/www/${BLUDIT_DOMAIN_NAME}/bludit-scripts/migration-v2-to-v3/migrate.php" "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs"
        cd "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs" || exit 36
        php migrate.php
        if [ ! -d "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/migrations" ]; then
            exit 23
        fi
        rm -rf "/var/www/${BLUDIT_DOMAIN_NAME}/bludit-scripts"
    fi

    bludit_install_from_download
}

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 {
    echo -n ''
}

function restore_remote_bludit {
    echo -n ''
}

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_theme {
    bludit_theme_dir="/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-themes/${BLUDIT_THEME_NAME}"
    if [ ! -d "${bludit_theme_dir}" ]; then
        if [ -d /repos/bludittheme ]; then
            mkdir -p "${bludit_theme_dir}"
            cp -r -p /repos/bludittheme/. "${bludit_theme_dir}"
            cd "${bludit_theme_dir}" || return
            git pull
        else
            function_check git_clone
            git_clone $BLUDIT_THEME_REPO "${bludit_theme_dir}"
            if [ -d "${bludit_theme_dir}" ]; then
                mkdir /repos/bludittheme
                cp -r "${bludit_theme_dir}"/* /repos/bludittheme/
            fi
        fi

        cd "${bludit_theme_dir}" || return
        git checkout $BLUDIT_THEME_COMMIT

        set_completion_param "bludit theme commit" "$BLUDIT_THEME_COMMIT"
    else
        CURR_BLUDIT_THEME_COMMIT=$(get_completion_param "bludit theme commit")
        if [[ "$CURR_BLUDIT_THEME_COMMIT" == "$BLUDIT_THEME_COMMIT" ]]; then
            return
        fi

        set_repo_commit "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-themes/${BLUDIT_THEME_NAME}" "bludit theme commit" "$BLUDIT_THEME_COMMIT" $BLUDIT_THEME_REPO
    fi
}

function install_bludit {
    increment_app_install_progress

    $INSTALL_PACKAGES php-gettext php-curl php-gd php-mysql git curl wget unzip

    increment_app_install_progress

    $INSTALL_PACKAGES memcached php-memcached php-intl exiftool libfcgi0ldbl

    if [ ! "$BLUDIT_DOMAIN_NAME" ]; then
        echo $'No domain name was given for bludit'
        exit 35
    fi

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

    increment_app_install_progress

    bludit_install_from_download

    add_ddns_domain "$BLUDIT_DOMAIN_NAME"

    increment_app_install_progress

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

    increment_app_install_progress

    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 "  if (!-e \$request_filename) {";
          echo "    set \$test P;";
          echo '  }';
          echo "  if (\$uri !~ ^/(plesk-stat|webstat|webstat-ssl|ftpstat|anon_ftpstat|awstats-icon|internal-nginx-static-location)) {";
          echo "    set \$test \"\${test}C\";";
          echo '  }';
          echo "  if (\$test = PC) {";
          echo "    rewrite ^/(.*)\$ /index.php?\$1;";
          echo '  }';
          echo '';
          echo '  # Logs';
          echo '  access_log /dev/null;';
          echo '  error_log /dev/null;';
          echo '';
          echo '  # Root';
          echo "  root /var/www/$BLUDIT_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  location ~ \.(jpg|jpeg|gif|png|css|js|ico|svg|eot|ttf|woff|woff2|otf)$ {';
          echo '    access_log        off;';
          echo '    expires           30d;';
          echo '  }';
          echo '';
          echo '  index index.php;';
          echo '  location ~ \.php {';
          echo '    include snippets/fastcgi-php.conf;';
          echo "    fastcgi_pass unix:/var/run/php/php${PHP_VERSION}-fpm.sock;";
          echo '    fastcgi_read_timeout 30;';
          echo '  }';
          echo '';
          echo '  # Location';
          echo '  location / {'; } >> "$bludit_nginx_site"
        nginx_limits "$BLUDIT_DOMAIN_NAME" '15m'
        { echo "    try_files \$uri \$uri/ /index.php?\$args;";
          echo '  }';
          echo '';
          echo '  location ^~ /bl-content/tmp/ { deny all; }';
          echo '  location ^~ /bl-content/pages/ { deny all; }';
          echo '  location ^~ /bl-content/databases/ { deny all; } ';
          echo '}'; } >> "$bludit_nginx_site"
    else
        echo -n '' > "$bludit_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$BLUDIT_ONION_PORT default_server;";
      echo '    port_in_redirect off;';
      echo "    server_name $BLUDIT_ONION_HOSTNAME;";
      echo ''; } >> "$bludit_nginx_site"
    nginx_compress "$BLUDIT_DOMAIN_NAME"
    echo '' >> "$bludit_nginx_site"
    nginx_security_options "$BLUDIT_DOMAIN_NAME"
    { echo '';
      echo '  # Logs';
      echo '  access_log /dev/null;';
      echo '  error_log /dev/null;';
      echo '';
      echo "  if (!-e \$request_filename) {";
      echo "    set \$test P;";
      echo '  }';
      echo "  if (\$uri !~ ^/(plesk-stat|webstat|webstat-ssl|ftpstat|anon_ftpstat|awstats-icon|internal-nginx-static-location)) {";
      echo "    set \$test \"\${test}C\";";
      echo '  }';
      echo "  if (\$test = PC) {";
      echo "    rewrite ^/(.*)\$ /index.php?\$1;";
      echo '  }';
      echo '';
      echo '  # Root';
      echo "  root /var/www/$BLUDIT_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  location ~ \.(jpg|jpeg|gif|png|css|js|ico|svg|eot|ttf|woff|woff2|otf)$ {';
      echo '    access_log        off;';
      echo '    expires           30d;';
      echo '  }';
      echo '';
      echo '  index index.php;';
      echo '  location ~ \.php {';
      echo '    include snippets/fastcgi-php.conf;';
      echo "    fastcgi_pass unix:/var/run/php/php${PHP_VERSION}-fpm.sock;";
      echo '    fastcgi_read_timeout 30;';
      echo '  }';
      echo '';
      echo '  # Location';
      echo '  location / {'; } >> "$bludit_nginx_site"
    nginx_limits "$BLUDIT_DOMAIN_NAME" '15m'
    { echo "    try_files \$uri \$uri/ index.php?\$args;";
      echo '  }';
      echo '';
      echo '  location ^~ /bl-content/tmp/ { deny all; }';
      echo '  location ^~ /bl-content/pages/ { deny all; }';
      echo '  location ^~ /bl-content/databases/ { deny all; } ';
      echo '}'; } >> "$bludit_nginx_site"

    configure_php

    increment_app_install_progress

    bludit_remove_bad_links

    increment_app_install_progress

    create_site_certificate "$BLUDIT_DOMAIN_NAME" 'yes'

    nginx_ensite "$BLUDIT_DOMAIN_NAME"

    # shellcheck disable=SC2086
    systemctl restart php${PHP_VERSION}-fpm
    systemctl restart nginx

    increment_app_install_progress

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

    install_bludit_theme

    if [ -d "${bludit_theme_dir}" ]; then
        if [ -f "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-content/databases/site.php" ]; then
            sed -i "s|\"theme\":.*|\"theme\": \"${BLUDIT_THEME_NAME}\",|g" "/var/www/${BLUDIT_DOMAIN_NAME}/htdocs/bl-content/databases/site.php"
        fi
    fi

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"