#!/bin/bash
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# movim application
#
# License
# =======
#
# Copyright (C) 2017-2018 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=0

MOVIM_DOMAIN_NAME=
MOVIM_CODE=
MOVIM_ONION_PORT=8117
MOVIM_REPO="https://github.com/movim/movim"
MOVIM_COMMIT='6142c2033b7695448516a67690324a3bde048260'
MOVIM_ADMIN_PASSWORD=
MOVIM_DAEMON_PORT=8880

MOVIM_SHORT_DESCRIPTION=$'Movim'
MOVIM_DESCRIPTION=$'Movim'
MOVIM_MOBILE_APP_URL='https://f-droid.org/packages/com.movim.movim'

movim_variables=(ONION_ONLY
                 MOVIM_DOMAIN_NAME
                 MOVIM_CODE
                 DDNS_PROVIDER
                 MY_USERNAME)

function logging_on_movim {
    echo -n ''
}

function logging_off_movim {
    echo -n ''
}

function remove_user_movim {
    remove_username="$1"

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

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

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

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

    if [[ $ONION_ONLY != "no" ]]; then
        MOVIM_DOMAIN_NAME='movim.local'
    else
        MOVIM_DETAILS_COMPLETE=
        while [ ! $MOVIM_DETAILS_COMPLETE ]
        do
            data=$(mktemp 2>/dev/null)
            if [[ "$DDNS_PROVIDER" == *"freedns"* ]]; then
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Movim Configuration" \
                       --form $"\\nPlease enter your Movim details.\\n\\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 12 65 2 \
                       $"Domain:" 1 1 "$(grep 'MOVIM_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       $"Code:" 2 1 "$(grep 'MOVIM_CODE' temp.cfg | awk -F '=' '{print $2}')" 2 25 33 255 \
                       2> "$data"
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"Movim Configuration" \
                       --form $"\\nPlease enter your Movim details.\\n\\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 12 65 2 \
                       $"Domain:" 1 1 "$(grep 'MOVIM_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 25 33 40 \
                       2> "$data"
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            MOVIM_DOMAIN_NAME=$(sed -n 1p < "$data")
            if [ "$MOVIM_DOMAIN_NAME" ]; then
                TEST_DOMAIN_NAME=$MOVIM_DOMAIN_NAME
                validate_domain_name
                if [[ "$TEST_DOMAIN_NAME" != "$MOVIM_DOMAIN_NAME" ]]; then
                    MOVIM_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ "$DDNS_PROVIDER" == *"freedns"* ]]; then
                        MOVIM_CODE=$(sed -n 2p < "$data")
                        validate_freedns_code "$MOVIM_CODE"
                        if [ ! "$VALID_CODE" ]; then
                            MOVIM_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $MOVIM_DOMAIN_NAME ]; then
                MOVIM_DETAILS_COMPLETE="yes"
            fi
            rm -f "$data"
        done

        # save the results in the config file
        write_config_param "MOVIM_CODE" "$MOVIM_CODE"
    fi
    write_config_param "MOVIM_DOMAIN_NAME" "$MOVIM_DOMAIN_NAME"
    APP_INSTALLED=1
}

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

    read_config_param 'MOVIM_DOMAIN_NAME'

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

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

    function_check create_database
    create_database movim "$MOVIM_ADMIN_PASSWORD" "$MY_USERNAME"
}

function reconfigure_movim {
    echo -n ''
}

function upgrade_movim {
    CURR_MOVIM_COMMIT=$(get_completion_param "movim commit")
    if [[ "$CURR_MOVIM_COMMIT" == "$MOVIM_COMMIT" ]]; then
        return
    fi

    if grep -q "movim domain" "$COMPLETION_FILE"; then
        MOVIM_DOMAIN_NAME=$(get_completion_param "movim domain")
    fi

    # update to the next commit
    function_check set_repo_commit
    set_repo_commit "/var/www/$MOVIM_DOMAIN_NAME/htdocs" "movim commit" "$MOVIM_COMMIT" "$MOVIM_REPO"

    cd "/var/www/${MOVIM_DOMAIN_NAME}/htdocs" || exit 6734824522
    php composer.phar install
    php mud.php db --set
    chown -R www-data:www-data "/var/www/${MOVIM_DOMAIN_NAME}/htdocs"
}


function backup_local_movim {
    MOVIM_DOMAIN_NAME='movim'
    if grep -q "movim domain" "$COMPLETION_FILE"; then
        MOVIM_DOMAIN_NAME=$(get_completion_param "movim domain")
    fi

    source_directory="/var/www/${MOVIM_DOMAIN_NAME}/htdocs"
    if [ -d "$source_directory" ]; then
        dest_directory=movim
        function_check suspend_site
        suspend_site "${MOVIM_DOMAIN_NAME}"

        function_check backup_directory_to_usb
        backup_directory_to_usb "$source_directory" "$dest_directory"

        function_check backup_database_to_usb
        backup_database_to_usb movim

        function_check restart_site
        restart_site
    fi
}

function restore_local_movim {
    if ! grep -q "movim domain" "$COMPLETION_FILE"; then
        return
    fi
    MOVIM_DOMAIN_NAME=$(get_completion_param "movim domain")
    if [ "$MOVIM_DOMAIN_NAME" ]; then
        echo $"Restoring movim"
        temp_restore_dir=/root/tempmovim
        movim_dir=/var/www/${MOVIM_DOMAIN_NAME}/htdocs
        # stop the daemons
        cd "$movim_dir" || exit 7856724252
        su -c "sh scripts/stopdaemons.sh" -s /bin/sh www-data

        function_check movim_create_database
        movim_create_database

        restore_database movim "${MOVIM_DOMAIN_NAME}"
        if [ -d $temp_restore_dir ]; then
            rm -rf $temp_restore_dir
        fi

        MARIADB_PASSWORD=$("${PROJECT_NAME}-pass" -u root -a mariadb)
        cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs/config" || exit 2468724682
        sed -i "s|'password'.*|'password'    => '$MARIADB_PASSWORD',|g" db.inc.php
        MARIADB_PASSWORD=

        echo $"Restore of movim complete"
    fi
}

function backup_remote_movim {
    if grep -q "movim domain" "$COMPLETION_FILE"; then
        MOVIM_DOMAIN_NAME=$(get_completion_param "movim domain")
        temp_backup_dir=/var/www/${MOVIM_DOMAIN_NAME}/htdocs
        if [ -d "$temp_backup_dir" ]; then
            function_check suspend_site
            suspend_site "${MOVIM_DOMAIN_NAME}"

            function_check backup_database_to_friend
            backup_database_to_friend movim

            function_check backup_directory_to_friend
            backup_directory_to_friend "$temp_backup_dir" movim

            function_check restart_site
            restart_site
        else
            echo $"movim domain specified but not found in ${temp_backup_dir}"
        fi
    fi
}

function restore_remote_movim {
    if grep -q "movim domain" "$COMPLETION_FILE"; then
        echo $"Restoring movim"
        MOVIM_DOMAIN_NAME=$(get_completion_param "movim domain")

        # stop the daemons
        cd "/var/www/${MOVIM_DOMAIN_NAME}/htdocs" || exit 524792846827
        su -c "sh scripts/stopdaemons.sh" -s /bin/sh www-data

        function_check movim_create_database
        movim_create_database

        function_check restore_database_from_friend
        restore_database_from_friend movim "${MOVIM_DOMAIN_NAME}"
        if [ -d /root/tempmovim ]; then
            rm -rf /root/tempmovim
        fi

        MARIADB_PASSWORD=$("${PROJECT_NAME}-pass" -u root -a mariadb)
        cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs/config" || exit 4242462487
        sed -i "s|'password'.*|'password'    => '$MARIADB_PASSWORD',|g" db.inc.php
        MARIADB_PASSWORD=

        echo $"Restore of movim complete"
    fi
}

function remove_movim {
    if [[ $(app_is_installed movim) == "0" ]]; then
        return
    fi
    read_config_param "MOVIM_DOMAIN_NAME"
    if [ ${#MOVIM_DOMAIN_NAME} -eq 0 ]; then
        return
    fi

    systemctl stop movim
    systemctl disable movim
    rm /etc/systemd/system/movim.service
    systemctl daemon-reload

    read_config_param "MY_USERNAME"
    echo "Removing $MOVIM_DOMAIN_NAME"
    nginx_dissite "$MOVIM_DOMAIN_NAME"
    remove_certs "$MOVIM_DOMAIN_NAME"

    if [ -d "/var/www/$MOVIM_DOMAIN_NAME" ]; then
        rm -rf "/var/www/$MOVIM_DOMAIN_NAME"
    fi
    if [ -f "/etc/nginx/sites-available/$MOVIM_DOMAIN_NAME" ]; then
        rm "/etc/nginx/sites-available/$MOVIM_DOMAIN_NAME"
    fi
    function_check drop_database
    drop_database movim
    function_check remove_onion_service
    remove_onion_service movim ${MOVIM_ONION_PORT}
    if grep -q "movim" /etc/crontab; then
        sed -i "/movim/d" /etc/crontab
    fi
    remove_app movim
    remove_completion_param install_movim
    sed -i '/movim/d' "$COMPLETION_FILE"
    remove_backup_database_local movim

    function_check remove_ddns_domain
    remove_ddns_domain "$MOVIM_DOMAIN_NAME"
}

function install_movim {
    if [ ! "$MOVIM_DOMAIN_NAME" ]; then
        echo $'No domain name was given for movim'
        exit 72572
    fi

    if [[ $(app_is_installed xmpp) == "0" ]]; then
        return
    fi

    movim_hourly_script movim "$MOVIM_DOMAIN_NAME"

    function_check install_mariadb
    install_mariadb

    function_check get_mariadb_password
    get_mariadb_password

    function_check repair_databases_script
    repair_databases_script

    apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
    apt-get -yq install php-memcached php-intl exiftool php-imagick libfcgi0ldbl

    if [ ! -d "/var/www/$MOVIM_DOMAIN_NAME" ]; then
        mkdir "/var/www/$MOVIM_DOMAIN_NAME"
    fi
    if [ ! -d "/var/www/$MOVIM_DOMAIN_NAME/htdocs" ]; then

        if [ -d /repos/movim ]; then
            mkdir "/var/www/$MOVIM_DOMAIN_NAME/htdocs"
            cp -r -p /repos/movim/. "/var/www/$MOVIM_DOMAIN_NAME/htdocs"
            cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs" || exit 3768568325
            git pull
        else
            function_check git_clone
            git_clone "$MOVIM_REPO" "/var/www/$MOVIM_DOMAIN_NAME/htdocs"
        fi

        if [ ! -d "/var/www/$MOVIM_DOMAIN_NAME/htdocs" ]; then
            echo $'Unable to clone movim repo'
            exit 76285
        fi
    fi

    cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs" || exit 7345247242
    git checkout $MOVIM_COMMIT -b $MOVIM_COMMIT
    set_completion_param "movim commit" "$MOVIM_COMMIT"

    # default login
    if [ ! -f "/var/www/$MOVIM_DOMAIN_NAME/htdocs/app/models/config/Config.php" ]; then
        echo $'Unable to find Config.php'
        exit 72352
    fi
    sed -i "s|'admin'|'${MY_USERNAME}'|g" "/var/www/$MOVIM_DOMAIN_NAME/htdocs/app/models/config/Config.php"
    sed -i "s|'password'|'${MOVIM_ADMIN_PASSWORD}'|g" "/var/www/$MOVIM_DOMAIN_NAME/htdocs/app/models/config/Config.php"

    # Fix typo
    sed -i 's|weksocket|websocket|g' app/widgets/AdminTest/admintest.js

    cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs" || exit 784368245224
    install_composer

    cd "/var/www/$MOVIM_DOMAIN_NAME/htdocs/config" || exit 6428764224
    cp db.example.inc.php db.inc.php
    sed -i "s|'username'.*|'username'    => 'root',|g" db.inc.php
    sed -i "s|'password'.*|'password'    => '$MARIADB_PASSWORD',|g" db.inc.php
    sed -i "s|'database'.*|'database'    => 'movim'|g" db.inc.php
    php mud.php db --set

    chmod u+rwx "/var/www/$MOVIM_DOMAIN_NAME/htdocs"
    chown -R www-data:www-data "/var/www/$MOVIM_DOMAIN_NAME/htdocs"

    function_check movim_create_database
    movim_create_database

    function_check add_ddns_domain
    add_ddns_domain "$MOVIM_DOMAIN_NAME"

    MOVIM_ONION_HOSTNAME=$(add_onion_service movim 80 ${MOVIM_ONION_PORT})

    { echo '[Unit]';
      echo 'Description=Movim daemon';
      echo 'After=network.target nginx.target';
      echo '';
      echo '[Service]';
      echo 'Type=simple';
      echo 'User=www-data';
      echo "WorkingDirectory=/var/www/$MOVIM_DOMAIN_NAME/htdocs"; } > /etc/systemd/system/movim.service
    if [[ $ONION_ONLY == 'no' ]]; then
        echo "ExecStart=/usr/bin/php /var/www/$MOVIM_DOMAIN_NAME/htdocs/daemon.php start --url=https://$MOVIM_DOMAIN_NAME --port=$MOVIM_DAEMON_PORT" >> /etc/systemd/system/movim.service
    else
        echo "ExecStart=/usr/bin/php /var/www/$MOVIM_DOMAIN_NAME/htdocs/daemon.php start --url=http://$MOVIM_ONION_HOSTNAME --port=$MOVIM_DAEMON_PORT" >> /etc/systemd/system/movim.service
    fi
    { echo 'StandardOutput=syslog';
      echo 'SyslogIdentifier=movim';
      echo 'PIDFile=/run/movim.pid';
      echo 'Restart=on-failure';
      echo 'RestartSec=10';
      echo '';
      echo '[Install]';
      echo 'WantedBy=multi-user.target'; } >> /etc/systemd/system/movim.service
    systemctl enable movim
    systemctl daemon-reload

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

        function_check nginx_security_options
        nginx_security_options "$MOVIM_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/$MOVIM_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  # Index';
          echo '  index index.php;';
          echo '';
          echo '  # PHP';
          echo '  location ~ \.php {';
          echo '    include snippets/fastcgi-php.conf;';
          echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;';
          echo '    fastcgi_read_timeout 30;';
          echo '  }';
          echo '';
          echo '  # Location';
          echo '  location / {'; } >> "$movim_nginx_site"
        function_check nginx_limits
        nginx_limits "$MOVIM_DOMAIN_NAME" '15m'
        { echo "    try_files \$uri \$uri/ @movim;";
          echo '  }';
          echo '';
          echo '  location /ws/ {';
          echo "    proxy_pass http://localhost:${MOVIM_DAEMON_PORT}/;";
          echo '    proxy_http_version 1.1;';
          echo "    proxy_set_header Upgrade \$http_upgrade;";
          echo '    proxy_set_header Connection "Upgrade";';
          echo "    proxy_set_header Host \$host;";
          echo "    proxy_set_header X-Real-IP \$remote_addr;";
          echo "    proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;";
          echo '    proxy_set_header X-Forwarded-Proto https;';
          echo '    proxy_redirect off;';
          echo '  }';
          echo '';
          echo '  # Fancy URLs';
          echo '  location @movim {';
          echo "    rewrite ^(.*)\$ /index.php?p=\$1 last;";
          echo '  }';
          echo '';
          echo '  # Restrict access that is unnecessary anyway';
          echo '  location ~ /\.(ht|git) {';
          echo '    deny all;';
          echo '  }';
          echo '';
          echo '}'; } >> "$movim_nginx_site"
    else
        echo -n '' > "$movim_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$MOVIM_ONION_PORT default_server;";
      echo "    server_name $MOVIM_DOMAIN_NAME;";
      echo ''; } >> "$movim_nginx_site"
    function_check nginx_compress
    nginx_compress "$MOVIM_DOMAIN_NAME"
    echo '' >> "$movim_nginx_site"
    function_check nginx_security_options
    nginx_security_options "$MOVIM_DOMAIN_NAME"
    { echo '';
      echo '  # Logs';
      echo '  access_log /dev/null;';
      echo '  error_log /dev/null;';
      echo '';
      echo '  # Root';
      echo "  root /var/www/$MOVIM_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  # Index';
      echo '  index index.php;';
      echo '';
      echo '  # 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 / {'; } >> "$movim_nginx_site"
    function_check nginx_limits
    nginx_limits "$MOVIM_DOMAIN_NAME" '15m'
    { echo "    try_files \$uri \$uri/ @movim;";
      echo '  }';
      echo '';
      echo '  location /ws/ {';
      echo "    proxy_pass http://localhost:${MOVIM_DAEMON_PORT}/;";
      echo '    proxy_http_version 1.1;';
      echo "    proxy_set_header Upgrade \$http_upgrade;";
      echo '    proxy_set_header Connection "Upgrade";';
      echo "    proxy_set_header Host \$host;";
      echo "    proxy_set_header X-Real-IP \$remote_addr;";
      echo "    proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;";
      echo '    proxy_set_header X-Forwarded-Proto https;';
      echo '    proxy_redirect off;';
      echo '  }';
      echo '';
      echo '  # Fancy URLs';
      echo '  location @movim {';
      echo "    rewrite ^(.*)\$ /index.php?p=\$1 last;";
      echo '  }';
      echo '';
      echo '  # Restrict access that is unnecessary anyway';
      echo '  location ~ /\.(ht|git) {';
      echo '    deny all;';
      echo '  }';
      echo '';
      echo '}'; } >> "$movim_nginx_site"

    function_check configure_php
    configure_php

    function_check create_site_certificate
    create_site_certificate "$MOVIM_DOMAIN_NAME" 'yes'

    # Ensure that the database gets backed up locally, if remote
    # backups are not being used
    function_check backup_databases_script_header
    backup_databases_script_header

    function_check backup_database_local
    backup_database_local movim

    function_check nginx_ensite
    nginx_ensite "$MOVIM_DOMAIN_NAME"

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a movim -p "$MOVIM_ADMIN_PASSWORD"

    set_completion_param "movim domain" "$MOVIM_DOMAIN_NAME"

    systemctl restart mariadb
    systemctl start movim
    systemctl restart php7.0-fpm
    systemctl restart nginx
    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"