#!/bin/bash
#
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# This needs python 3.6, which is later than the debian version
#
# 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=''

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

MICROBLOGPUB_DOMAIN_NAME=
MICROBLOGPUB_CODE=
MICROBLOGPUB_ONION_PORT=9261
MICROBLOGPUB_REPO="https://github.com/tsileo/microblog.pub"
MICROBLOGPUB_COMMIT='791e55c7f5eee26792b90b94668d5f0dbbc767f9'
MICROBLOGPUB_PORT_INTERNAL=5005

# These parameters are used by the FreedomBox mobile app
MICROBLOGPUB_SHORT_DESCRIPTION=
MICROBLOGPUB_DESCRIPTION=
MICROBLOGPUB_MOBILE_APP_URL=

microblogpub_variables=(ONION_ONLY
                        MICROBLOGPUB_DOMAIN_NAME
                        MICROBLOGPUB_CODE
                        DDNS_PROVIDER
                        MY_USERNAME)

function logging_on_microblogpub {
    echo -n ''
}

function logging_off_microblogpub {
    echo -n ''
}

function remove_user_microblogpub {
    remove_username="$1"

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

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

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

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

    if [[ "$ONION_ONLY" != "no" ]]; then
        MICROBLOGPUB_DOMAIN_NAME='microblogpub.local'
        write_config_param "MICROBLOGPUB_DOMAIN_NAME" "$MICROBLOGPUB_DOMAIN_NAME"
    else
        interactive_site_details "microblogpub" "MICROBLOGPUB_DOMAIN_NAME" "MICROBLOGPUB_CODE"
    fi
    APP_INSTALLED=1
}

function change_password_microblogpub {
    #curr_username="$1"
    new_user_password="$2"

    read_config_param 'MY_USERNAME'
    read_config_param 'MICROBLOGPUB_DOMAIN_NAME'

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a microblogpub -p "$new_user_password"

    { echo 'import bcrypt';
      echo "print(bcrypt.hashpw(\"$new_user_password\", bcrypt.gensalt()).decode('utf-8'))"; } > /tmp/microblogpub
    MICROBLOGPUB_HASHED_PASSWORD=$(python /tmp/microblogpub)
    rm /tmp/microblogpub
}

function microblogpub_create_database {
    if [ -f "$IMAGE_PASSWORD_FILE" ]; then
        MICROBLOGPUB_ADMIN_PASSWORD="$(printf "%d" "$(cat "")")"
    else
        if [ ! "$MICROBLOGPUB_ADMIN_PASSWORD" ]; then
            MICROBLOGPUB_ADMIN_PASSWORD=$(create_password "${MINIMUM_PASSWORD_LENGTH}")
        fi
    fi
    if [ ! "$MICROBLOGPUB_ADMIN_PASSWORD" ]; then
        return
    fi

    create_database_mongodb microblogpub "$MICROBLOGPUB_ADMIN_PASSWORD" "$MY_USERNAME"
}

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

function configure_interactive_microblogpub {
    W=(1 $"Option 1"
       2 $"Option 2")

    while true
    do
        # shellcheck disable=SC2068
        selection=$(dialog --backtitle $"Freedombone Administrator Control Panel" --title $"microblogpub" --menu $"Choose an operation, or ESC for main menu:" 14 70 3 "${W[@]}" 3>&2 2>&1 1>&3)

        if [ ! "$selection" ]; then
            break
        fi
        case $selection in
            1) # call some function for option 1
            ;;
            2) # call some function for option 2
            ;;
        esac
    done
}

function upgrade_microblogpub {
    CURR_MICROBLOGPUB_COMMIT=$(get_completion_param "microblogpub commit")
    if [[ "$CURR_MICROBLOGPUB_COMMIT" == "$MICROBLOGPUB_COMMIT" ]]; then
        return
    fi

    if grep -q "microblogpub domain" "$COMPLETION_FILE"; then
        MICROBLOGPUB_DOMAIN_NAME=$(get_completion_param "microblogpub domain")
    fi

    # update to the next commit
    set_repo_commit "/etc/microblogpub" "microblogpub commit" "$MICROBLOGPUB_COMMIT" "$MICROBLOGPUB_REPO"
    chown -R microblogpub:microblogpub "/etc/microblogpub"
    systemctl restart microblogpub
}

function backup_local_microblogpub {
    MICROBLOGPUB_DOMAIN_NAME='microblogpub'
    if grep -q "microblogpub domain" "$COMPLETION_FILE"; then
        MICROBLOGPUB_DOMAIN_NAME=$(get_completion_param "microblogpub domain")
    fi

    source_directory=/etc/microblogpub

    suspend_site "${MICROBLOGPUB_DOMAIN_NAME}"

    systemctl stop microblogpub

    dest_directory=microblogpub
    backup_directory_to_usb "$source_directory" $dest_directory

    USE_MONGODB=1
    backup_database_to_usb microblogpub

    restart_site
    systemctl start microblogpub
}

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

    temp_restore_dir=/root/tempmicroblogpub
    microblogpub_dir=/etc/microblogpub

    microblogpub_create_database

    USE_MONGODB=1
    restore_database microblogpub
    if [ -d $temp_restore_dir ]; then
        rm -rf $temp_restore_dir
    fi

    restore_directory_from_usb $temp_restore_dir microblogpub
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$microblogpub_dir" ]; then
            cp -rp "$temp_restore_dir$microblogpub_dir"/* "$microblogpub_dir"/
        else
            if [ ! -d "$microblogpub_dir" ]; then
                mkdir "$microblogpub_dir"
            fi
            cp -rp "$temp_restore_dir"/* "$microblogpub_dir"/
        fi
        chown -R microblogpub:microblogpub "$microblogpub_dir"
        rm -rf $temp_restore_dir
    fi
    systemctl start microblogpub

    restart_site
}

function backup_remote_microblogpub {
    MICROBLOGPUB_DOMAIN_NAME='microblogpub'
    if grep -q "microblogpub domain" "$COMPLETION_FILE"; then
        MICROBLOGPUB_DOMAIN_NAME=$(get_completion_param "microblogpub domain")
    fi

    source_directory=/etc/microblogpub

    suspend_site "${MICROBLOGPUB_DOMAIN_NAME}"
    systemctl stop microblogpub

    dest_directory=microblogpub
    backup_directory_to_friend "$source_directory" $dest_directory
    USE_MONGODB=1
    backup_database_to_friend microblogpub


    systemctl start microblogpub

    restart_site
}

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

    temp_restore_dir=/root/tempmicroblogpub
    microblogpub_dir=/etc/microblogpub

    microblogpub_create_database

    USE_MONGODB=1
    restore_database_from_friend microblogpub
    if [ -d "$temp_restore_dir" ]; then
        rm -rf $temp_restore_dir
    fi

    restore_directory_from_friend $temp_restore_dir microblogpub
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$microblogpub_dir" ]; then
            cp -rp "$temp_restore_dir$microblogpub_dir"/* "$microblogpub_dir"/
        else
            if [ ! -d "$microblogpub_dir" ]; then
                mkdir "$microblogpub_dir"
            fi
            cp -rp $temp_restore_dir/* "$microblogpub_dir"/
        fi
        chown -R microblogpub:microblogpub "$microblogpub_dir"
        rm -rf $temp_restore_dir
    fi
    systemctl start microblogpub

    restart_site
}

function remove_microblogpub {
    nginx_dissite "$MICROBLOGPUB_DOMAIN_NAME"
    remove_certs "$MICROBLOGPUB_DOMAIN_NAME"

    if [ -f /etc/systemd/system/microblogpub.service ]; then
        systemctl stop microblogpub
        systemctl disable microblogpub
        rm /etc/systemd/system/microblogpub.service
    fi
    userdel -r microblogpub

    if [ -d "/var/www/$MICROBLOGPUB_DOMAIN_NAME" ]; then
        rm -rf "/var/www/$MICROBLOGPUB_DOMAIN_NAME"
    fi
    if [ -f "/etc/nginx/sites-available/$MICROBLOGPUB_DOMAIN_NAME" ]; then
        rm "/etc/nginx/sites-available/$MICROBLOGPUB_DOMAIN_NAME"
    fi
    drop_database_mongodb microblogpub
    remove_onion_service microblogpub "${MICROBLOGPUB_ONION_PORT}"
    if grep -q "microblogpub" /etc/crontab; then
        sed -i "/microblogpub/d" /etc/crontab
    fi
    remove_app microblogpub
    remove_completion_param install_microblogpub
    sed -i '/microblogpub/d' "$COMPLETION_FILE"

    remove_ddns_domain "$MICROBLOGPUB_DOMAIN_NAME"
}

function install_microblogpub {
    apt-get -yq install python3-pip python3-flask

    install_mongodb

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

    if [ -d "/var/www/$MICROBLOGPUB_DOMAIN_NAME/htdocs" ]; then
        rm -rf "/var/www/$MICROBLOGPUB_DOMAIN_NAME/htdocs"
    fi
    if [ -d /repos/microblogpub ]; then
        mkdir "/var/www/$MICROBLOGPUB_DOMAIN_NAME/htdocs"
        cp -r -p /repos/microblogpub/. "/etc/microblogpub"
        cd "/etc/microblogpub" || exit 36487365
        git pull
    else
        git_clone "$MICROBLOGPUB_REPO" "/etc/microblogpub"
    fi

    if [ ! -d "/etc/microblogpub" ]; then
        echo $'Unable to clone microblogpub repo'
        exit 87525
    fi

    cd "/etc/microblogpub" || exit 3463754637
    git checkout "$MICROBLOGPUB_COMMIT" -b "$MICROBLOGPUB_COMMIT"
    set_completion_param "microblogpub commit" "$MICROBLOGPUB_COMMIT"

    pip3 install -r requirements.txt

    { echo 'import sass';
      echo "sass.compile(dirname=('sass', 'static/css'), output_style='compressed')"; } > generate_css.py
    python3 generate_css.py

    { echo "username: '$MY_USERNAME'";
      echo "name: '$MY_NAME'";
      echo "icon_url: 'https://$MICROBLOGPUB_DOMAIN_NAME/me.png'";
      echo "domain: '$MICROBLOGPUB_DOMAIN_NAME'";
      echo "summary: 'your summary'";
      echo 'https: false'; } > config/me.yml

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

    microblogpub_create_database

    add_ddns_domain "$MICROBLOGPUB_DOMAIN_NAME"

    MICROBLOGPUB_ONION_HOSTNAME=$(add_onion_service microblogpub 80 "${MICROBLOGPUB_ONION_PORT}")

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

        nginx_security_options "$MICROBLOGPUB_DOMAIN_NAME"

        { echo '  add_header Strict-Transport-Security max-age=15768000;';
          echo '';
          echo '    access_log /dev/null;';
          echo '    error_log /dev/null;';
          echo '';
          echo "    root /var/www/$MICROBLOGPUB_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  index index.html;';
          echo '  # Location';
          echo '  location / {'; } >> "$microblogpub_nginx_site"
        nginx_limits "$MICROBLOGPUB_DOMAIN_NAME" '15m'
        { echo "    proxy_pass http://localhost:$MICROBLOGPUB_PORT_INTERNAL;";
          echo '  }';
          echo '}'; } >> "$microblogpub_nginx_site"
    else
        echo -n '' > "$microblogpub_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$MICROBLOGPUB_ONION_PORT default_server;";
      echo "    server_name $MICROBLOGPUB_ONION_HOSTNAME;";
      echo ''; } >> "$microblogpub_nginx_site"
    nginx_compress "$MICROBLOGPUB_DOMAIN_NAME"
    echo '' >> "$microblogpub_nginx_site"
    nginx_security_options "$MICROBLOGPUB_DOMAIN_NAME"
    { echo '';
      echo '    access_log /dev/null;';
      echo '    error_log /dev/null;';
      echo '';
      echo "    root /var/www/$MICROBLOGPUB_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  index index.html;';
      echo '  # Location';
      echo '  location / {'; } >> "$microblogpub_nginx_site"
    nginx_limits "$MICROBLOGPUB_DOMAIN_NAME" '15m'
    { echo "    proxy_pass http://localhost:$MICROBLOGPUB_PORT_INTERNAL;";
      echo '  }';
      echo '}'; } >> "$microblogpub_nginx_site"

    adduser --system --home="/etc/microblogpub" --group microblogpub

    { echo '[Unit]';
      echo 'Description=microblogpub';
      echo 'After=syslog.target';
      echo 'After=network.target';
      echo "Documentation=$MICROBLOGPUB_REPO";
      echo '';
      echo '[Service]';
      echo 'Type=simple';
      echo 'User=microblogpub';
      echo 'Group=microblogpub';
      echo 'WorkingDirectory=/etc/microblogpub';
      echo "ExecStart=/usr/local/bin/flask run -p $MICROBLOGPUB_PORT_INTERNAL --with-threads";
      echo 'Environment=USER=microblogpub';
      echo 'Environment=FLASK_APP=app.py';
      echo 'Environment=MICROBLOGPUB_DEBUG=1';
      echo 'Restart=always';
      echo 'StandardError=syslog';
      echo '';
      echo '[Install]';
      echo 'WantedBy=multi-user.target'; } > "/etc/systemd/system/microblogpub.service"
    systemctl enable microblogpub
    chown -R microblogpub:microblogpub "/etc/microblogpub"
    systemctl start microblogpub

    create_site_certificate "$MICROBLOGPUB_DOMAIN_NAME" 'yes'

    nginx_ensite "$MICROBLOGPUB_DOMAIN_NAME"

    systemctl restart nginx

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a microblogpub -p "$MICROBLOGPUB_ADMIN_PASSWORD"


    { echo 'import bcrypt';
      echo "print(bcrypt.hashpw(\"$MICROBLOGPUB_ADMIN_PASSWORD\", bcrypt.gensalt()).decode('utf-8'))"; } > /tmp/microblogpub
    MICROBLOGPUB_HASHED_PASSWORD=$(python /tmp/microblogpub)
    rm /tmp/microblogpub

    set_completion_param "microblogpub domain" "$MICROBLOGPUB_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"