#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Wekan kanban
#
# 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

WEKAN_DOMAIN_NAME=
WEKAN_CODE=
WEKAN_PORT=8081
WEKAN_ONION_PORT=8120
WEKAN_REPO="https://github.com/wekan/wekan"
WEKAN_COMMIT='dc547c38d1f5ca72729f6d8f81eb03671ca15934'
FLOW_ROUTER_REPO="git://github.com/wekan/flow-router.git"
FLOW_ROUTER_COMMIT='0c1f6423ed9b68eb00cfb1a19492438917a38956'
WEKAN_DIR=/etc/wekan

wekan_variables=(ONION_ONLY
                 WEKAN_DOMAIN_NAME
                 WEKAN_CODE
                 DDNS_PROVIDER
                 MY_USERNAME)

function logging_on_wekan {
    echo -n ''
}

function logging_off_wekan {
    echo -n ''
}

function remove_user_wekan {
    remove_username="$1"
}

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

function install_interactive_wekan {
    if [[ $ONION_ONLY != "no" ]]; then
        GIT_DOMAIN_NAME='wekan.local'
        write_config_param "WEKAN_DOMAIN_NAME" "$WEKAN_DOMAIN_NAME"
    else
        function_check interactive_site_details
        interactive_site_details wekan
    fi
    APP_INSTALLED=1
}

function change_password_wekan {
    curr_username="$1"
    new_user_password="$2"
}

function reconfigure_wekan {
    echo -n ''
}

function upgrade_wekan {
    CURR_WEKAN_COMMIT=$(get_completion_param "wekan commit")
    if [[ "$CURR_WEKAN_COMMIT" == "$WEKAN_COMMIT" ]]; then
        return
    fi

    systemctl stop wekan

    # update to the next commit
    function_check set_repo_commit
    set_repo_commit $WEKAN_DIR "wekan commit" "$WEKAN_COMMIT" $WEKAN_REPO

    systemctl start wekan
}

function backup_local_wekan {
    source_directory=$WEKAN_DIR/data
    if [ -d $source_directory ]; then
        systemctl stop wekan

        dest_directory=wekan
        function_check suspend_site
        suspend_site wekan

        function_check backup_database_to_usb
        backup_database_to_usb wekan

        function_check backup_directory_to_usb
        backup_directory_to_usb $source_directory $dest_directory

        function_check restart_site
        restart_site

        systemctl start wekan
    fi
}

function restore_local_wekan {
    if [ -d $WEKAN_DIR ]; then
        systemctl stop wekan

        function_check restore_database
        restore_database gogs ${WEKAN_DOMAIN_NAME}

        temp_restore_dir=/root/tempwekan
        function_check restore_directory_from_usb
        restore_directory_from_usb $temp_restore_dir wekan
        if [ -d $temp_restore_dir$WEKAN_DIR/data ]; then
            cp -r $temp_restore_dir$WEKAN_DIR/data/* $WEKAN_DIR/data/
        else
            cp -r $temp_restore_dir/* $WEKAN_DIR/data/
        fi
        rm -rf $temp_restore_dir
        systemctl start wekan
    fi
}

function backup_remote_wekan {
    if grep -q "wekan domain" $COMPLETION_FILE; then
        temp_backup_dir=$WEKAN_DIR/data
        if [ -d $temp_backup_dir ]; then
            systemctl stop wekan

            function_check suspend_site
            suspend_site wekan

            echo $"Backing up Wekan installation"

            function_check backup_database_to_friend
            backup_database_to_friend wekan

            function_check backup_directory_to_friend
            backup_directory_to_friend $temp_backup_dir wekan

            function_check restart_site
            restart_site

            systemctl start wekan
        else
            echo $"wekan domain specified but not found in ${temp_backup_dir}"
        fi
    fi
}

function restore_remote_wekan {
    if [ -d $WEKAN_DIR ]; then
        systemctl stop wekan

        function_check restore_database_from_friend
        restore_database_from_friend wekan

        temp_restore_dir=/root/tempwekan
        function_check restore_directory_from_usb
        restore_directory_from_friend $temp_restore_dir wekan
        if [ -d $temp_restore_dir$WEKAN_DIR/data ]; then
            cp -r $temp_restore_dir$WEKAN_DIR/data/* $WEKAN_DIR/data/
        else
            cp -r $temp_restore_dir/* $WEKAN_DIR/data/
        fi
        rm -rf $temp_restore_dir
        systemctl start wekan
    fi
}

function remove_wekan {
    systemctl stop wekan
    systemctl disable wekan
    if [ -f /etc/systemd/system/wekan.service ]; then
        rm /etc/systemd/system/wekan.service
    fi
    systemctl daemon-reload

    function_check remove_nodejs
    remove_nodejs wekan

    nginx_dissite wekan

    if [ -d $WEKAN_DIR ]; then
        rm -rf $WEKAN_DIR
    fi
    if [ -f /etc/nginx/sites-available/wekan ]; then
        rm /etc/nginx/sites-available/wekan
    fi
    function_check drop_database
    drop_database wekan
    function_check remove_onion_service
    remove_onion_service wekan ${WEKAN_ONION_PORT}
    remove_app wekan
    remove_completion_param install_wekan
    sed -i '/wekan/d' $COMPLETION_FILE

    groupdel -f wekan
    userdel -r wekan
    remove_meteor
}

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

    function_check create_database
    create_database gogs "$WEKAN_ADMIN_PASSWORD"
}

function install_wekan_main {
    if [[ $(app_is_installed wekan_main) == "1" ]]; then
        return
    fi

    if [ ! -d /var/www/wekan ]; then
        mkdir /var/www/wekan
    fi
    if [ -d $WEKAN_DIR ]; then
        rm -rf $WEKAN_DIR
    fi

    if [ -d /repos/wekan ]; then
        mkdir -p $WEKAN_DIR
        cp -r -p /repos/wekan/. $WEKAN_DIR
        cd $WEKAN_DIR
        git pull
    else
        function_check git_clone
        git_clone $WEKAN_REPO $WEKAN_DIR
    fi

    if [ ! -d $WEKAN_DIR ]; then
        echo $'Unable to clone wekan repo'
        exit 783251
    fi

    # an unprivileged user to run as
    groupadd wekan
    useradd -c "Wekan account" -d $WEKAN_DIR/ -m -r -g wekan wekan

    cd $WEKAN_DIR
    git checkout $WEKAN_COMMIT -b $WEKAN_COMMIT
    set_completion_param "wekan commit" "$WEKAN_COMMIT"

    chown -R wekan:wekan $WEKAN_DIR

    WEKAN_ONION_HOSTNAME=$(add_onion_service wekan 80 ${WEKAN_ONION_PORT})
    set_completion_param "wekan onion domain" "$WEKAN_ONION_HOSTNAME"

    wekan_nginx_site=/etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    if [[ ${ONION_ONLY} == "no" ]]; then
        function_check nginx_http_redirect
        nginx_http_redirect ${WEKAN_DOMAIN_NAME}
        echo 'server {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    listen 443 ssl;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    listen [::]:443 ssl;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo "    root /var/www/${WEKAN_DOMAIN_NAME}/htdocs;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo "    server_name ${WEKAN_DOMAIN_NAME};" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    access_log /dev/null;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo "    error_log /dev/null;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        function_check nginx_ssl
        nginx_ssl ${WEKAN_DOMAIN_NAME}
        function_check nginx_disable_sniffing
        nginx_disable_sniffing ${WEKAN_DOMAIN_NAME}
        echo '    add_header Strict-Transport-Security max-age=0;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    location / {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        function_check nginx_limits
        nginx_limits ${WEKAN_DOMAIN_NAME} '15m'
        echo "        proxy_pass http://localhost:$WEKAN_PORT;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    }' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    location = /robots.txt {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '        allow all;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '        log_not_found off;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '        access_log /dev/null;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '    }' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        nginx_keybase ${WEKAN_DOMAIN_NAME}
        echo '}' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
        echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    else
        echo -n '' > /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    fi
    echo 'server {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo "    listen 127.0.0.1:${WEKAN_ONION_PORT} default_server;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo "    root /var/www/$WEKAN_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo "    server_name $WEKAN_DOMAIN_NAME;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    access_log /dev/null;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo "    error_log /dev/null;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    function_check nginx_disable_sniffing
    nginx_disable_sniffing ${WEKAN_DOMAIN_NAME}
    echo '    add_header Strict-Transport-Security max-age=0;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    location / {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    function_check nginx_limits
    nginx_limits ${WEKAN_DOMAIN_NAME} '15m'
    echo "        proxy_pass http://localhost:$WEKAN_PORT;" >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    }' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    location = /robots.txt {' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '        allow all;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '        log_not_found off;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '        access_log /dev/null;' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '    }' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    echo '' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}
    nginx_keybase ${WEKAN_DOMAIN_NAME}
    echo '}' >> /etc/nginx/sites-available/${WEKAN_DOMAIN_NAME}

    function_check nginx_ensite
    nginx_ensite wekan

    install_completed wekan_main
}

function install_wekan {
    apt-get -qy install build-essential c++ capnproto curl

    function_check install_nodejs
    install_nodejs wekan

    install_wekan_main
    install_meteor

    cd $WEKAN_DIR

    su -c 'npm install babel-runtime' - wekan
    su -c 'npm install node-gyp' - wekan
    su -c 'npm install node-pre-gyp' - wekan
    su -c 'npm install fibers' - wekan
    su -c 'npm install bcrypt' - wekan
    su -c 'npm install bson' - wekan
    su -c 'npm install es6-promise' - wekan
    su -c 'npm install meteor-node-stubs' - wekan
    su -c 'npm install winston' - wekan
    su -c 'npm install winston-zulip' - wekan
    su -c 'npm install xss' - wekan

    # Remove any directories from previous installs
    if [ -d $WEKAN_DIR/.meteor ]; then
        rm -rf $WEKAN_DIR/.meteor
    fi
    if [ -d $WEKAN_DIR/app ]; then
        rm -rf $WEKAN_DIR/app
    fi
    if [ -d $WEKAN_DIR/app_build ]; then
        rm -rf $WEKAN_DIR/app_build
    fi

    # Get additional packages
    mkdir -p $WEKAN_DIR/.meteor/packages
    chown wekan:wekan --recursive $WEKAN_DIR/.meteor
    cd $WEKAN_DIR/.meteor/packages
    if [ ! -d /repos/flowrouter ]; then
        su -c "git clone --depth 1 -b master $FLOW_ROUTER_REPO kadira-flow-router" - wekan
    else
        mkdir kadira-flow-router
        cp -r -p /repos/flowrouter/. kadira-flow-router
        cd kadira-flow-router
        git pull
        cd ..
    fi
    cd kadira-flow-router
    git checkout $FLOW_ROUTER_COMMIT -b $FLOW_ROUTER_COMMIT
    cd ..
    if [ ! -d /repos/meteoruseraccounts ]; then
        su -c "git clone --depth 1 -b master $METEOR_USERACCOUNTS_REPO meteor-useraccounts-core" - wekan
    else
        mkdir meteor-useraccounts-core
        cp -r -p /repos/meteoruseraccounts/. meteor-useraccounts-core
        cd meteor-useraccounts-core
        git pull
        cd ..
    fi
    cd meteor-useraccounts-core
    git checkout $METEOR_USERACCOUNTS_COMMIT -b $METEOR_USERACCOUNTS_COMMIT
    cd ..
    if [ ! -f $WEKAN_DIR/.meteor/packages/meteor-useraccounts-core/package.js ]; then
        echo $"File not found: $WEKAN_DIR/.meteor/packages/meteor-useraccounts-core/package.js"
        exit 7289529
    fi
    sed -i 's/api\.versionsFrom/\/\/api.versionsFrom/' $WEKAN_DIR/.meteor/packages/meteor-useraccounts-core/package.js
    cd $WEKAN_DIR/.meteor
    su -c "$WEKAN_DIR/.meteor/meteor -- help" - wekan

    # Build app
    if [ ! -d $WEKAN_DIR/app ]; then
        echo $'No app subdirectory found'
        exit 294569
    fi
    cd $WEKAN_DIR/app
    su -c "$WEKAN_DIR/.meteor/meteor add standard-minifier-js" - wekan
    su -c "$WEKAN_DIR/.meteor/meteor npm install" - wekan
    su -c "$WEKAN_DIR/.meteor/meteor build --directory $WEKAN_DIR/app_build" - wekan
    cp $WEKAN_DIR/app/fix-download-unicode/cfs_access-point.txt $WEKAN_DIR/app_build/bundle/programs/server/packages/cfs_access-point.js
    chown wekan:wekan $WEKAN_DIR/app_build/bundle/programs/server/packages/cfs_access-point.js
    sed -i "s|build\/Release\/bson|browser_build\/bson|g" $WEKAN_DIR/app_build/bundle/programs/server/npm/node_modules/meteor/cfs_gridfs/node_modules/mongodb/node_modules/bson/ext/index.js
    if [ ! -d $WEKAN_DIR/app_build/bundle/programs/server/npm/node_modules/meteor/npm-bcrypt ]; then
        echo $"No subdirectory found: $WEKAN_DIR/app_build/bundle/programs/server/npm/node_modules/meteor/npm-bcrypt"
        exit 479832
    fi
    cd $WEKAN_DIR/app_build/bundle/programs/server/npm/node_modules/meteor/npm-bcrypt
    su -c 'rm -rf node_modules/bcrypt' - wekan
    su -c 'npm install bcrypt' - wekan
    cd $WEKAN_DIR/app_build/bundle/programs/server/
    su -c 'npm install' - wekan
    mv $WEKAN_DIR/app_build/bundle ../build

    if [ ! -f $WEKAN_DIR/build/main.js ]; then
        echo $'main.js not found'
        exit 7828252
    fi

    # Cleanup
    rm -R $WEKAN_DIR/.meteor
    rm -R $WEKAN_DIR/app
    rm -R $WEKAN_DIR/app_build

    chown -R wekan:wekan $WEKAN_DIR

    function_check install_mariadb
    install_mariadb

    function_check get_mariadb_password
    get_mariadb_password

    function_check wekan_create_database
    wekan_create_database

    # daemon
    echo '[Unit]' > /etc/systemd/system/wekan.service
    echo 'Description=Wekan' >> /etc/systemd/system/wekan.service
    echo 'After=syslog.target' >> /etc/systemd/system/wekan.service
    echo 'After=network.target' >> /etc/systemd/system/wekan.service
    echo '' >> /etc/systemd/system/wekan.service
    echo '[Service]' >> /etc/systemd/system/wekan.service
    echo 'User=wekan' >> /etc/systemd/system/wekan.service
    echo 'Group=wekan' >> /etc/systemd/system/wekan.service
    echo "WorkingDirectory=$WEKAN_DIR" >> /etc/systemd/system/wekan.service
    echo "ExecStart=/usr/local/bin/node $WEKAN_DIR/build/main.js" >> /etc/systemd/system/wekan.service
    echo 'Environment=PATH=/usr/bin:/usr/local/bin' >> /etc/systemd/system/wekan.service
    echo 'Environment=NODE_ENV=production' >> /etc/systemd/system/wekan.service
    echo 'Restart=on-failure' >> /etc/systemd/system/wekan.service
    echo '' >> /etc/systemd/system/wekan.service
    echo '[Install]' >> /etc/systemd/system/wekan.service
    echo 'WantedBy=multi-user.target' >> /etc/systemd/system/wekan.service
    systemctl enable wekan.service
    systemctl daemon-reload
    systemctl start wekan.service

    systemctl restart nginx

    set_completion_param "wekan domain" "$WEKAN_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"