#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Smilodon ActivityPub app
#
# 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='full full-vim social'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1
SHOW_ICANN_ADDRESS_ON_ABOUT=0

SMILODON_REPO="https://github.com/bashrc/smilodon"
SMILODON_COMMIT='e17dad10f9d4c00516b9c93a587e4298b3639af3'
SMILODON_ADMIN_PASSWORD=
SMILODON_ONION_PORT=8054
SMILODON_PATH=/etc/smilodon
SMILODON_SECRET_KEY=

smilodon_variables=(SMILODON_REPO
                    SMILODON_ADMIN_PASSWORD
                    USB_MOUNT
                    SMILODON_SECRET_KEY
                    MY_EMAIL_ADDRESS
                    MY_USERNAME)

function logging_on_smilodon {
    echo -n ''
}

function logging_off_smilodon {
    echo -n ''
}

function remove_user_smilodon {
    remove_username="$1"
}

function add_user_smilodon {
    new_username="$1"
    new_user_password="$2"
    echo '0'
}

function install_interactive_smilodon {
    echo -n ''
    APP_INSTALLED=1
}

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

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

function smilodon_create_database {
    if [ -f $IMAGE_PASSWORD_FILE ]; then
        SMILODON_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
    else
        if [ ! $SMILODON_ADMIN_PASSWORD ]; then
            SMILODON_ADMIN_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
        fi
    fi
    if [ ! $SMILODON_ADMIN_PASSWORD ]; then
        return
    fi

    function_check create_database_mongodb
    create_database_mongodb smilodon "$SMILODON_ADMIN_PASSWORD" smilodon
}

function reconfigure_smilodon {
    echo -n ''
}

function upgrade_smilodon {
    CURR_SMILODON_COMMIT=$(get_completion_param "smilodon commit")
    if [[ "$CURR_SMILODON_COMMIT" == "$SMILODON_COMMIT" ]]; then
        return
    fi

    if [[ $(app_is_installed smilodon) == "1" ]]; then
        systemctl stop smilodon
        function_check set_repo_commit
        set_repo_commit $SMILODON_PATH "smilodon commit" "$SMILODON_COMMIT" $SMILODON_REPO
        chown -R smilodon:smilodon $SMILODON_PATH
        systemctl start smilodon
    fi

}

function backup_local_smilodon {
    if [ -d $SMILODON_PATH ]; then
        systemctl stop smilodon

        USE_MONGODB=1
        function_check backup_database_to_usb
        backup_database_to_usb smilodon

        backup_directory_to_usb $SMILODON_PATH smilodon

        systemctl start smilodon
    fi
}

function restore_local_smilodon {
    temp_restore_dir=/root/tempsmilodon

    systemctl stop smilodon

    function_check smilodon_create_database
    smilodon_create_database

    USE_MONGODB=1
    restore_database smilodon

    if [ -d ${SMILODON_PATH} ]; then
        if [ -d $temp_restore_dir${SMILODON_PATH} ]; then
            if [ -d $temp_restore_dir${SMILODON_PATH} ]; then
                rm -rf ${SMILODON_PATH}
                mv $temp_restore_dir$SMILODON_PATH ${SMILODON_PATH}/
            else
                cp -r $temp_restore_dir/* ${SMILODON_PATH}/
            fi
            if [ ! "$?" = "0" ]; then
                function_check backup_unmount_drive
                backup_unmount_drive
                systemctl start smilodon
                exit 528823
            fi
            chown -R smilodon:smilodon ${SMILODON_PATH}
        fi
    fi

    if [ -d $USB_MOUNT/backup/smilodon ]; then
        chown -R smilodon:smilodon ${SMILODON_PATH}
        if [ -d $temp_restore_dir ]; then
            rm -rf $temp_restore_dir
        fi
    fi

    systemctl start smilodon
}

function backup_remote_smilodon {
    if [ -d $SMILODON_PATH ]; then
        function_check suspend_site
        suspend_site smilodon

        systemctl stop smilodon

        USE_MONGODB=1
        function_check backup_database_to_friend
        backup_database_to_friend smilodon

        function_check backup_directory_to_friend
        backup_directory_to_friend $SMILODON_PATH smilodon

        systemctl start smilodon

        function_check restart_site
        restart_site
    else
        echo $"Smilodon domain specified but not found in $SMILODON_PATH"
    fi
}

function restore_remote_smilodon {
    temp_restore_dir=/root/tempsmilodon
    if grep -q "smilodon domain" $COMPLETION_FILE; then
        echo $"Restoring smilodon"
        systemctl stop smilodon

        function_check restore_database_from_friend

        function_check smilodon_create_database
        smilodon_create_database

        USE_MONGODB=1
        restore_database_from_friend smilodon

        if [ -d $SMILODON_PATH ]; then
            if [ -d $temp_restore_dir$SMILODON_PATH ]; then
                rm -rf $SMILODON_PATH
                mv $temp_restore_dir$SMILODON_PATH ${SMILODON_PATH}/
            else
                cp -r $temp_restore_dir/* ${SMILODON_PATH}/
            fi
            if [ ! "$?" = "0" ]; then
                systemctl start smilodon
                exit 6391643
            fi
        fi

        if [ -d $SERVER_DIRECTORY/backup/smilodon ]; then
            chown -R smilodon:smilodon ${SMILODON_PATH}
        fi
        if [ -d /root/tempsmilodon ]; then
            rm -rf /root/tempsmilodon
        fi

        systemctl start smilodon

        echo $"Restore of smilodon complete"
    fi
}

function remove_smilodon {
    nginx_dissite smilodon

    systemctl stop smilodon
    systemctl disable smilodon
    rm /etc/systemd/system/smilodon.service

    function_check remove_onion_service
    remove_onion_service smilodon ${SMILODON_ONION_PORT}
    if [ -f /etc/nginx/sites-available/smilodon ]; then
        rm /etc/nginx/sites-available/smilodon
    fi

    groupdel -f smilodon
    userdel -r smilodon

    if [ -d $SMILODON_PATH ]; then
        rm -rf $SMILODON_PATH
    fi

    function_check remove_mongodb_user
    remove_mongodb_user smilodon

    function_check drop_database_mongodb
    drop_database_mongodb smilodon

    function_check remove_mongodb
    remove_mongodb smilodon

    remove_completion_param install_smilodon
    sed -i '/smilodon/d' $COMPLETION_FILE
}

function install_smilodon {
    apt-get -yq install python3-pip

    if [ -d $SMILODON_PATH ]; then
        rm -rf $SMILODON_PATH
    fi

    if [ -d /repos/smilodon ]; then
        mkdir $SMILODON_PATH
        cp -r -p /repos/smilodon/. $SMILODON_PATH
        cd $SMILODON_PATH
        git pull
    else
        function_check git_clone
        git_clone $SMILODON_REPO $SMILODON_PATH
    fi

    if [ ! -d $SMILODON_PATH ]; then
        echo $'Could not clone smilodon repo'
        exit 6784783
    fi
    cd $SMILODON_PATH
    git checkout $SMILODON_COMMIT -b $SMILODON_COMMIT
    set_completion_param "smilodon commit" "$SMILODON_COMMIT"

    groupadd smilodon
    useradd -c "Smilodon system account" -d $SMILODON_PATH -m -r -g smilodon smilodon

    function_check install_mongodb
    install_mongodb smilodon

    smilodon_create_database

    SMILODON_ONION_HOSTNAME=$(add_onion_service smilodon 80 ${SMILODON_ONION_PORT})

    pip3 install -r requirements.txt
    if [ ! "$?" = "0" ]; then
        echo $'Unable to install smilodon dependencies'
        exit 87352835
    fi

    echo 'server {' > /etc/nginx/sites-available/smilodon
    echo "  listen 127.0.0.1:${SMILODON_ONION_PORT} default_server;" >> /etc/nginx/sites-available/smilodon
    echo "  server_name $SMILODON_ONION_HOSTNAME;" >> /etc/nginx/sites-available/smilodon
    echo '' >> /etc/nginx/sites-available/smilodon
    echo '  access_log /dev/null;' >> /etc/nginx/sites-available/smilodon
    echo '  error_log /dev/null;' >> /etc/nginx/sites-available/smilodon
    echo '' >> /etc/nginx/sites-available/smilodon
    echo '  location / {' >> /etc/nginx/sites-available/smilodon
    echo '      proxy_pass http://localhost:5000;' >> /etc/nginx/sites-available/smilodon
    echo '  }' >> /etc/nginx/sites-available/smilodon
    echo '}' >> /etc/nginx/sites-available/smilodon

    nginx_ensite smilodon
    systemctl enable mongodb
    systemctl restart mongodb
    systemctl restart nginx

    chown -R smilodon:smilodon ${SMILODON_PATH}

    if [ ! $SMILODON_SECRET_KEY ]; then
        SMILODON_SECRET_KEY="$(create_password 30)$(create_password 30)$(create_password 30)$(create_password 30)"
    fi

    echo '#!/bin/bash' > ${SMILODON_PATH}/run_smilodon.sh
    echo "cd ${SMILODON_PATH}" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export smilodon_domain_name=$SMILODON_ONION_HOSTNAME" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export secret_key='$SMILODON_SECRET_KEY'" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export mongodb_username='smilodon'" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export mongodb_password='$SMILODON_ADMIN_PASSWORD'" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export smilodon_admin_address=$MY_EMAIL_ADDRESS" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export MAIL_SERVER='localhost'" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "export MAIL_PORT=25" >> ${SMILODON_PATH}/run_smilodon.sh
    echo "python3 run.py" >> ${SMILODON_PATH}/run_smilodon.sh
    chmod +x ${SMILODON_PATH}/run_smilodon.sh
    chown smilodon:smilodon ${SMILODON_PATH}/run_smilodon.sh

    echo '[Unit]' > /etc/systemd/system/smilodon.service
    echo 'Description=Smilodon ActivityPub messenger' >> /etc/systemd/system/smilodon.service
    echo 'After=network.target mongodb.service' >> /etc/systemd/system/smilodon.service
    echo 'After=tor.service' >> /etc/systemd/system/smilodon.service
    echo '' >> /etc/systemd/system/smilodon.service
    echo '[Service]' >> /etc/systemd/system/smilodon.service
    echo 'User=smilodon' >> /etc/systemd/system/smilodon.service
    echo 'Group=smilodon' >> /etc/systemd/system/smilodon.service
    echo "WorkingDirectory=${SMILODON_PATH}/" >> /etc/systemd/system/smilodon.service
    echo "ExecStart=${SMILODON_PATH}/run_smilodon.sh" >> /etc/systemd/system/smilodon.service
    echo 'Restart=on-failure' >> /etc/systemd/system/smilodon.service
    echo 'RestartSec=10' >> /etc/systemd/system/smilodon.service
    echo '' >> /etc/systemd/system/smilodon.service
    echo '[Install]' >> /etc/systemd/system/smilodon.service
    echo 'WantedBy=multi-user.target' >> /etc/systemd/system/smilodon.service
    systemctl enable smilodon
    systemctl daemon-reload
    systemctl start smilodon

    ${PROJECT_NAME}-pass -u $MY_USERNAME -a smilodon -p "$SMILODON_ADMIN_PASSWORD"

    APP_INSTALLED=1
}

# NOTE: deliberately no exit 0