#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# movim application
#
# License
# =======
#
# Copyright (C) 2017 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_variables=(ONION_ONLY
                 MOVIM_DOMAIN_NAME
                 MOVIM_CODE
                 DDNS_PROVIDER
                 MY_USERNAME)

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 [ ! $MOVIM_DETAILS_COMPLETE ]
        do
            data=$(tempfile 2>/dev/null)
            trap "rm -f $data" 0 1 2 5 15
            if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; 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 $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            MOVIM_DOMAIN_NAME=$(cat $data | sed -n 1p)
            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 [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        MOVIM_CODE=$(cat $data | sed -n 2p)
                        validate_freedns_code "$MOVIM_CODE"
                        if [ ! $VALID_CODE ]; then
                            MOVIM_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $MOVIM_DOMAIN_NAME ]; then
                MOVIM_DETAILS_COMPLETE="yes"
            fi
        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 `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 {
    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/${MOVIM_DOMAIN_NAME}/htdocs
    php composer.phar install
    php mud.php db --set
    chown -R www-data:www-data /var/www/${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
        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

        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
        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
        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

    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

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

    # curl -sS https://getcomposer.org/installer | php
    if [ -f ~/freedombone/image_build/composer_install ]; then
        cat ~/freedombone/image_build/composer_install | php
    else
        if [ -f /home/$MY_USERNAME/freedombone/image_build/composer_install ]; then
            cat /home/$MY_USERNAME/freedombone/image_build/composer_install | php
        fi
    fi
    php composer.phar install

    cd /var/www/$MOVIM_DOMAIN_NAME/htdocs/config
    cp db.example.inc.php db.inc.php
    sed -i "s|'username'.*|'username'    => 'root',|g" db.inc.php
    sed -i "s|'password'.*|'password'    => '$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]' > /etc/systemd/system/movim.service
    echo 'Description=Movim daemon' >> /etc/systemd/system/movim.service
    echo 'After=network.target nginx.target' >> /etc/systemd/system/movim.service
    echo '' >> /etc/systemd/system/movim.service
    echo '[Service]' >> /etc/systemd/system/movim.service
    echo 'Type=simple' >> /etc/systemd/system/movim.service
    echo 'User=www-data' >> /etc/systemd/system/movim.service
    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' >> /etc/systemd/system/movim.service
    echo 'SyslogIdentifier=movim' >> /etc/systemd/system/movim.service
    echo 'PIDFile=/run/movim.pid' >> /etc/systemd/system/movim.service
    echo 'Restart=on-failure' >> /etc/systemd/system/movim.service
    echo 'RestartSec=10' >> /etc/systemd/system/movim.service
    echo '' >> /etc/systemd/system/movim.service
    echo '[Install]' >> /etc/systemd/system/movim.service
    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 {' >> $movim_nginx_site
        echo '  listen 443 ssl;' >> $movim_nginx_site
        echo '  listen [::]:443 ssl;' >> $movim_nginx_site
        echo "  server_name $MOVIM_DOMAIN_NAME;" >> $movim_nginx_site
        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_disable_sniffing
        nginx_disable_sniffing $MOVIM_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Logs' >> $movim_nginx_site
        echo '  access_log /dev/null;' >> $movim_nginx_site
        echo '  error_log /dev/null;' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Root' >> $movim_nginx_site
        echo "  root /var/www/$MOVIM_DOMAIN_NAME/htdocs;" >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Index' >> $movim_nginx_site
        echo '  index index.php;' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # PHP' >> $movim_nginx_site
        echo '  location ~ \.php {' >> $movim_nginx_site
        echo '    include snippets/fastcgi-php.conf;' >> $movim_nginx_site
        echo '    fastcgi_pass unix:/var/run/php-fpm.sock;' >> $movim_nginx_site
        echo '  }' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Location' >> $movim_nginx_site
        echo '  location / {' >> $movim_nginx_site
        function_check nginx_limits
        nginx_limits $MOVIM_DOMAIN_NAME '15m'
        echo '    try_files $uri $uri/ @movim;' >> $movim_nginx_site
        echo '  }' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  location /ws/ {' >> $movim_nginx_site
        echo "    proxy_pass http://localhost:${MOVIM_DAEMON_PORT}/;" >> $movim_nginx_site
        echo '    proxy_http_version 1.1;' >> $movim_nginx_site
        echo '    proxy_set_header Upgrade $http_upgrade;' >> $movim_nginx_site
        echo '    proxy_set_header Connection "Upgrade";' >> $movim_nginx_site
        echo '    proxy_set_header Host $host;' >> $movim_nginx_site
        echo '    proxy_set_header X-Real-IP $remote_addr;' >> $movim_nginx_site
        echo '    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;' >> $movim_nginx_site
        echo '    proxy_set_header X-Forwarded-Proto https;' >> $movim_nginx_site
        echo '    proxy_redirect off;' >> $movim_nginx_site
        echo '  }' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Fancy URLs' >> $movim_nginx_site
        echo '  location @movim {' >> $movim_nginx_site
        echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $movim_nginx_site
        echo '  }' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '  # Restrict access that is unnecessary anyway' >> $movim_nginx_site
        echo '  location ~ /\.(ht|git) {' >> $movim_nginx_site
        echo '    deny all;' >> $movim_nginx_site
        echo '  }' >> $movim_nginx_site
        echo '' >> $movim_nginx_site
        echo '}' >> $movim_nginx_site
    else
        echo -n '' > $movim_nginx_site
    fi
    echo 'server {' >> $movim_nginx_site
    echo "    listen 127.0.0.1:$MOVIM_ONION_PORT default_server;" >> $movim_nginx_site
    echo "    server_name $MOVIM_DOMAIN_NAME;" >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    function_check nginx_compress
    nginx_compress $MOVIM_DOMAIN_NAME
    echo '' >> $movim_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $MOVIM_DOMAIN_NAME
    echo '' >> $movim_nginx_site
    echo '  # Logs' >> $movim_nginx_site
    echo '  access_log /dev/null;' >> $movim_nginx_site
    echo '  error_log /dev/null;' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # Root' >> $movim_nginx_site
    echo "  root /var/www/$MOVIM_DOMAIN_NAME/htdocs;" >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # Index' >> $movim_nginx_site
    echo '  index index.php;' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # PHP' >> $movim_nginx_site
    echo '  location ~ \.php {' >> $movim_nginx_site
    echo '    include snippets/fastcgi-php.conf;' >> $movim_nginx_site
    echo '    fastcgi_pass unix:/var/run/php-fpm.sock;' >> $movim_nginx_site
    echo '  }' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # Location' >> $movim_nginx_site
    echo '  location / {' >> $movim_nginx_site
    function_check nginx_limits
    nginx_limits $MOVIM_DOMAIN_NAME '15m'
    echo '    try_files $uri $uri/ @movim;' >> $movim_nginx_site
    echo '  }' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  location /ws/ {' >> $movim_nginx_site
    echo "    proxy_pass http://localhost:${MOVIM_DAEMON_PORT}/;" >> $movim_nginx_site
    echo '    proxy_http_version 1.1;' >> $movim_nginx_site
    echo '    proxy_set_header Upgrade $http_upgrade;' >> $movim_nginx_site
    echo '    proxy_set_header Connection "Upgrade";' >> $movim_nginx_site
    echo '    proxy_set_header Host $host;' >> $movim_nginx_site
    echo '    proxy_set_header X-Real-IP $remote_addr;' >> $movim_nginx_site
    echo '    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;' >> $movim_nginx_site
    echo '    proxy_set_header X-Forwarded-Proto https;' >> $movim_nginx_site
    echo '    proxy_redirect off;' >> $movim_nginx_site
    echo '  }' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # Fancy URLs' >> $movim_nginx_site
    echo '  location @movim {' >> $movim_nginx_site
    echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $movim_nginx_site
    echo '  }' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    echo '  # Restrict access that is unnecessary anyway' >> $movim_nginx_site
    echo '  location ~ /\.(ht|git) {' >> $movim_nginx_site
    echo '    deny all;' >> $movim_nginx_site
    echo '  }' >> $movim_nginx_site
    echo '' >> $movim_nginx_site
    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 start movim
    systemctl restart php-fpm
    systemctl restart nginx
    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"