#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Jitsi meet + videobridge
#
# Instructions: https://github.com/jitsi/jitsi-meet/blob/master/doc/manual-install.md
#
# License
# =======
#
# Copyright (C) 2016 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

VIDEOBRIDGE_PORT=5347
JITSI_ONION_PORT=8102
JITSI_VIDEOBRIDGE_ONION_PORT=8103
JITSI_AUTH_ONION_PORT=8104
JITSI_FOCUS_ONION_PORT=8105

# domains
JITSI_DOMAIN_NAME=
JITSI_CODE=
JITSI_ONION_HOSTNAME=
JITSI_VIDEOBRIDGE_ONION_HOSTNAME=
JITSI_AUTH_ONION_HOSTNAME=

# repos
JITSI_MEET_REPO="https://github.com/jitsi/jitsi-meet"
JITSI_MEET_COMMIT='4d335e086be74fd9074ff302ff56401beb62bf80'
JICOFO_REPO="https://github.com/jitsi/jicofo"
JICOFO_COMMIT='91f08b13b34a4fddedc65901c44fce15905d6a1f'

# secrets
JITSI_VIDEOBRIDGE_SECRET=
JITSI_FOCUS_SECRET=
JITSI_CONFERENCE_SECRET=

jitsi_variables=(ONION_ONLY
                 JITSI_DOMAIN_NAME
                 JITSI_CODE
                 JITSI_MEET_REPO
                 JITSI_MEET_COMMIT
                 DEFAULT_DOMAIN_NAME
                 JITSI_VIDEOBRIDGE_SECRET
                 JITSI_FOCUS_SECRET
                 JITSI_CONFERENCE_SECRET
                 JITSI_ONION_HOSTNAME
                 JITSI_VIDEOBRIDGE_ONION_HOSTNAME
                 MY_USERNAME)

function change_password_jitsi {
    echo -n ''
}

function can_install_videobridge {
    check_architecture=$(uname -a)
    if [[ "$check_architecture" == *"amd64"* || "$check_architecture" == *"i386"* ]]; then
        echo "1"
    else
        echo "0"
    fi
}

function add_jitsi_onion_domain {
    jitsi_subdomain_name="$1"
    jitsi_subdomain_port="$2"
    jitsi_subdomain_onion_port="$3"

    new_domain=$(add_onion_service "${jitsi_subdomain_name}" ${jitsi_subdomain_port} ${jitsi_subdomain_onion_port})

    if ! grep -q "Jitsi ${jitsi_subdomain_name} onion domain" /home/${MY_USERNAME}/README; then
        echo $"Jitsi ${jitsi_subdomain_name} onion domain: ${new_domain}" >> /home/${MY_USERNAME}/README
        echo '' >> /home/${MY_USERNAME}/README
        chown ${MY_USERNAME}:${MY_USERNAME} /home/${MY_USERNAME}/README
        chmod 600 /home/${MY_USERNAME}/README
    else
        if [ -f /home/${MY_USERNAME}/README ]; then
            sed -i "s|Jitsi ${jitsi_subdomain_name} onion domain.*|Jitsi ${jitsi_subdomain_name} onion domain: ${new_domain}|g" /home/${MY_USERNAME}/README
        fi
    fi
    echo "${new_domain}"
}

function create_jitsi_subdomains {
    JITSI_ONION_HOSTNAME=$(add_onion_service jitsi 80 ${JITSI_ONION_PORT})

    if ! grep -q "Jitsi onion domain" /home/${MY_USERNAME}/README; then
        echo $"Jitsi onion domain: ${JITSI_ONION_HOSTNAME}" >> /home/${MY_USERNAME}/README
        echo '' >> /home/${MY_USERNAME}/README
        chown ${MY_USERNAME}:${MY_USERNAME} /home/${MY_USERNAME}/README
        chmod 600 /home/${MY_USERNAME}/README
    else
        if [ -f /home/${MY_USERNAME}/README ]; then
            sed -i "s|Jitsi onion domain.*|Jitsi onion domain: ${JITSI_ONION_HOSTNAME}|g" /home/${MY_USERNAME}/README
        fi
    fi

    JITSI_VIDEOBRIDGE_ONION_HOSTNAME=$(add_jitsi_onion_domain jitsi-videobridge ${VIDEOBRIDGE_PORT} ${JITSI_VIDEOBRIDGE_ONION_PORT})
    JITSI_AUTH_ONION_HOSTNAME=$(add_jitsi_onion_domain jitsi-auth 5222 ${JITSI_AUTH_ONION_PORT})
    JITSI_FOCUS_ONION_HOSTNAME=$(add_jitsi_onion_domain jitsi-focus 5222 ${JITSI_FOCUS_ONION_PORT})
}

function remove_jitsi_subdomains {
    function_check remove_onion_service
    remove_onion_service jitsi ${JITSI_ONION_PORT}
    remove_onion_service jitsi-videobridge ${JITSI_VIDEOBRIDGE_ONION_PORT}
    remove_onion_service jitsi-auth ${JITSI_AUTH_ONION_PORT}
    remove_onion_service jitsi-focus ${JITSI_FOCUS_ONION_PORT}
}

function remove_user_jitsi {
    remove_username="$1"
}

function add_user_jitsi {
    new_username="$1"
    new_user_password="$2"
}

function install_interactive_jitsi {
    if [ ! ${ONION_ONLY} ]; then
        ONION_ONLY='no'
    fi

    if [[ ${ONION_ONLY} != "no" ]]; then
        JITSI_DOMAIN_NAME='jitsi.local'
        write_config_param "JITSI_DOMAIN_NAME" "$JITSI_DOMAIN_NAME"
    else
        function_check interactive_site_details
        interactive_site_details "jitsi" "JITSI_DOMAIN_NAME" "JITSI_CODE"
    fi
    APP_INSTALLED=1
}

function configure_interactive_jitsi {
    echo -n ''
}

function reconfigure_jitsi {
    echo -n ''
}

function upgrade_jitsi {
    echo -n ''
}

function backup_local_jitsi {
    echo -n ''
}

function restore_local_jitsi {
    echo -n ''
}

function backup_remote_jitsi {
    echo -n ''
}

function restore_remote_jitsi {
    echo -n ''
}

function remove_jitsi {
    read_config_param JITSI_DOMAIN_NAME
    if [ ${#JITSI_DOMAIN_NAME} -eq 0 ]; then
        return
    fi

    if [ -f /etc/nginx/sites-available/${JITSI_DOMAIN_NAME} ]; then
        nginx_dissite ${JITSI_DOMAIN_NAME}
        if [ -d /var/www/${JITSI_DOMAIN_NAME} ]; then
            rm -rf /var/www/${JITSI_DOMAIN_NAME}
        fi
        rm /etc/nginx/sites-available/${JITSI_DOMAIN_NAME}

        function_check remove_certs
        remove_certs ${JITSI_DOMAIN_NAME}

        systemctl reload nginx
    fi

    remove_jitsi_subdomains

    systemctl stop prosody
    if [ -f /etc/prosody/conf.d/${JITSI_DOMAIN_NAME}.cfg.lua ]; then
        rm /etc/prosody/conf.d/${JITSI_DOMAIN_NAME}.cfg.lua
    fi
    if [ -f /etc/prosody/conf.avail/${JITSI_DOMAIN_NAME}.cfg.lua ]; then
        rm /etc/prosody/conf.avail/${JITSI_DOMAIN_NAME}.cfg.lua
    fi
    prosodyctl unregister focus auth.${JITSI_DOMAIN_NAME}
    systemctl start prosody

    remove_nodejs jitsi

    # remove jicofo
    if [ -f /etc/systemd/system/jicofo.service ]; then
        systemctl stop jicofo
        systemctl disable jicofo
        rm /etc/systemd/system/jicofo.service
    fi
    if [ -d ${INSTALL_DIR}/jicofo ]; then
        rm -rf ${INSTALL_DIR}/jicofo
    fi

    # remove videobridge
    #firewall_remove ${VIDEOBRIDGE_PORT}
    apt-get -yq remove --purge jitsi-videobridge
    if [ -d /etc/jitsi ]; then
        rm -rf /etc/jitsi
    fi
    deluser --remove-all-files jitsi
    if [ -d /usr/share/jitsi-videobridge ]; then
        rm -rf /usr/share/jitsi-videobridge
    fi
    sed -i "/jitsi/d" /etc/apt/sources.list
    apt-get update

    remove_app jitsi
    remove_completion_param install_jitsi
    sed -i '/jitsi/d' ${COMPLETION_FILE}
    sed -i '/Jitsi/d' /home/${MY_USERNAME}/README

    function_check remove_ddns_domain
    remove_ddns_domain $JITSI_DOMAIN_NAME
}

function install_jitsi_videobridge {
    apt-get -yq install wget debconf-utils
    echo 'deb http://download.jitsi.org/nightly/deb unstable/' >> /etc/apt/sources.list
    wget -qO - https://download.jitsi.org/nightly/deb/unstable/archive.key | apt-key add -
    apt-get update

    debconf-set-selections <<< "jitsi-videobridge jitsi-videobridge/jvb-hostname string jitsi-videobridge.${JITSI_VIDEOBRIDGE_ONION_HOSTNAME}"
    apt-get -yq install jitsi-videobridge
    if [ ! -d /etc/jitsi ]; then
        echo $'Videobridge package failed to install'
        exit 63983
    fi
    #firewall_add videobridge ${VIDEOBRIDGE_PORT}
}

function install_jitsi_jicofo {
    apt-get -yq install default-jdk ant

    if [ ! -d ${INSTALL_DIR} ]; then
        mkdir -p ${INSTALL_DIR}
    fi

    function_check git_clone
    git_clone ${JICOFO_REPO} ${INSTALL_DIR}/jicofo
    if [ ! -d ${INSTALL_DIR}/jicofo ]; then
        exit 63829
    fi
    cd ${INSTALL_DIR}/jicofo
    git checkout ${JICOFO_COMMIT} -b ${JICOFO_COMMIT}
    set_completion_param "jitsi jicofo commit" "${JICOFO_COMMIT}"

    check_architecture=$(uname -a)
    if [[ "$check_architecture" == *"amd64"* ]]; then
        ant dist.lin64
        jicofo_dir=${INSTALL_DIR}/jicofo/dist/lin64
    else
        ant dist.lin
        jicofo_dir=${INSTALL_DIR}/jicofo/dist/lin
    fi

    if [ ! -d ${jicofo_dir} ]; then
        echo $'Jicofo working directory not found'
        exit 62825
    fi

    # TODO does this have to be run as root?

    echo '[Unit]' > /etc/systemd/system/jicofo.service
    echo 'Description=Jicofo (Jitsi Conference Focus)' >> /etc/systemd/system/jicofo.service
    echo 'After=syslog.target network.target tor.service' >> /etc/systemd/system/jicofo.service
    echo '' >> /etc/systemd/system/jicofo.service
    echo '[Service]' >> /etc/systemd/system/jicofo.service
    echo 'Type=simple' >> /etc/systemd/system/jicofo.service
    echo 'User=root' >> /etc/systemd/system/jicofo.service
    echo 'Group=root' >> /etc/systemd/system/jicofo.service
    echo "WorkingDirectory=${jicofo_dir}" >> /etc/systemd/system/jicofo.service
    echo "ExecStart=/usr/bin/torify ./jicofo.sh --domain=${JITSI_ONION_HOSTNAME} --secret=\"${JITSI_FOCUS_SECRET}\" --user_domain=${JITSI_AUTH_ONION_HOSTNAME} --user_name=focus --user_password=\"${JITSI_CONFERENCE_SECRET}\"" >> /etc/systemd/system/jicofo.service
    echo 'Restart=on-failure' >> /etc/systemd/system/jicofo.service
    echo 'SuccessExitStatus=3 4' >> /etc/systemd/system/jicofo.service
    echo 'RestartForceExitStatus=3 4' >> /etc/systemd/system/jicofo.service
    echo '' >> /etc/systemd/system/jicofo.service
    echo '[Install]' >> /etc/systemd/system/jicofo.service
    echo 'WantedBy=multi-user.target' >> /etc/systemd/system/jicofo.service
    chmod +x /etc/systemd/system/jicofo.service

    systemctl enable jicofo
    systemctl start jicofo
}

function install_jitsi_xmpp {
    if [ ! -d /etc/prosody/conf.avail ]; then
        echo $'Missing directory /etc/prosody/conf.avail'
        exit 62382
    fi

    cp /var/www/${JITSI_DOMAIN_NAME}/htdocs/prosody-plugins/*.lua /usr/lib/prosody/modules
    cp -r /var/www/${JITSI_DOMAIN_NAME}/htdocs/prosody-plugins/token /usr/lib/prosody/modules/

    update_default_domain

    prosody_config=/etc/prosody/conf.avail/${JITSI_DOMAIN_NAME}.cfg.lua
    echo "VirtualHost \"${JITSI_DOMAIN_NAME}\"" > $prosody_config
    echo 'authentication = "anonymous"' >> $prosody_config
    echo 'ssl = {' >> $prosody_config
    echo "    key = \"/etc/prosody/certs/${JITSI_DOMAIN_NAME}.key\";" >> $prosody_config
    echo "    certificate = \"/etc/prosody/certs/${JITSI_DOMAIN_NAME}.pem\";" >> $prosody_config
    echo "    dhparam = \"/etc/prosody/certs/${JITSI_DOMAIN_NAME}.dhparam\";" >> $prosody_config
    echo '    options = {"no_sslv2", "no_sslv3" };' >> $prosody_config
    echo '}' >> $prosody_config
    echo '' >> $prosody_config
    echo 'modules_enabled = {' >> $prosody_config
    echo '    "bosh";' >> $prosody_config
    echo '    "pubsub";' >> $prosody_config
    echo '    "tls";' >> $prosody_config
    echo '    "onions";' >> $prosody_config
    echo '    "saslauth";' >> $prosody_config
    echo '}' >> $prosody_config
    echo '' >> $prosody_config
    echo "VirtualHost \"${JITSI_ONION_HOSTNAME}\"" > $prosody_config
    echo '    authentication = "anonymous"' >> $prosody_config
    echo '' >> $prosody_config
    echo "VirtualHost \"${JITSI_AUTH_ONION_HOSTNAME}\"" >> $prosody_config
    echo '    authentication = "internal_plain"' >> $prosody_config
    echo '' >> $prosody_config
    echo "admins = { \"focus@${JITSI_AUTH_ONION_HOSTNAME}\" }" >> $prosody_config
    echo '' >> $prosody_config
    echo "Component \"${JITSI_CONFERENCE_ONION_HOSTNAME}\" \"muc\"" >> $prosody_config
    echo "Component \"${JITSI_VIDEOBRIDGE_ONION_HOSTNAME}\"" >> $prosody_config
    echo "    component_secret = \"${JITSI_VIDEOBRIDGE_SECRET}\"" >> $prosody_config
    echo "Component \"${JITSI_FOCUS_ONION_HOSTNAME}\"" >> $prosody_config
    echo "    component_secret = \"${JITSI_FOCUS_SECRET}\"" >> $prosody_config

    ln -s /etc/prosody/conf.avail/${JITSI_DOMAIN_NAME}.cfg.lua /etc/prosody/conf.d/${JITSI_DOMAIN_NAME}.cfg.lua

    prosodyctl register focus ${JITSI_AUTH_ONION_HOSTNAME} "${JITSI_CONFERENCE_SECRET}"
}

function install_jitsi_meet {
    if [ ${#JITSI_DOMAIN_NAME} -eq 0 ]; then
        exit 367839
    fi

    function_check install_nodejs
    install_nodejs jitsi

    if [ ! -d /var/www/${JITSI_DOMAIN_NAME} ]; then
        mkdir -p /var/www/${JITSI_DOMAIN_NAME}
    fi
    if [ ! -d /var/www/${JITSI_DOMAIN_NAME}/htdocs ]; then
        function_check git_clone
        git_clone ${JITSI_MEET_REPO} /var/www/${JITSI_DOMAIN_NAME}/htdocs
        if [ ! -d /var/www/${JITSI_DOMAIN_NAME}/htdocs ]; then
            echo $'Unable to clone jitsi meet repo'
            exit 345673
        fi
    fi

    cd /var/www/${JITSI_DOMAIN_NAME}/htdocs
    git checkout ${JITSI_MEET_COMMIT} -b ${JITSI_MEET_COMMIT}
    set_completion_param "jitsi commit" "${JITSI_MEET_COMMIT}"

    install_jitsi_xmpp

    chmod a+w /var/www/${JITSI_DOMAIN_NAME}/htdocs

    npm install -g browserify@13.1.1
    npm install
    make

    jitsi_nginx_site=/etc/nginx/sites-available/$JITSI_DOMAIN_NAME
    if [[ $ONION_ONLY == "no" ]]; then
        function_check nginx_http_redirect
        nginx_http_redirect $JITSI_DOMAIN_NAME
        echo 'server {' >> $jitsi_nginx_site
        echo '  listen 443 ssl;' >> $jitsi_nginx_site
        echo "  server_name ${JITSI_DOMAIN_NAME};" >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  # Security' >> $jitsi_nginx_site
        function_check nginx_ssl
        nginx_ssl $JITSI_DOMAIN_NAME

        function_check nginx_disable_sniffing
        nginx_disable_sniffing $JITSI_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  # Logs' >> $jitsi_nginx_site
        echo '  access_log off;' >> $jitsi_nginx_site
        echo '  error_log off;' >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  # Root' >> $jitsi_nginx_site
        echo "  root /var/www/${JITSI_DOMAIN_NAME}/htdocs;" >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  index index.html;' >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  location ~ ^/([a-zA-Z0-9=\?]+)$ {' >> $jitsi_nginx_site
        echo '      rewrite ^/(.*)$ / break;' >> $jitsi_nginx_site
        echo '  }' >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  location / {' >> $jitsi_nginx_site
        function_check nginx_limits
        nginx_limits $JITSI_DOMAIN_NAME '15m'
        echo '  }' >> $jitsi_nginx_site
        echo '' >> $jitsi_nginx_site
        echo '  location /http-bind {' >> $jitsi_nginx_site
        echo '      proxy_pass      http://localhost:5280/http-bind;' >> $jitsi_nginx_site
        echo '      proxy_set_header X-Forwarded-For $remote_addr;' >> $jitsi_nginx_site
        echo '      proxy_set_header Host $http_host;' >> $jitsi_nginx_site
        echo '  }' >> $jitsi_nginx_site
        echo '}' >> $jitsi_nginx_site
    else
        echo -n '' > $jitsi_nginx_site
    fi
    echo 'server {' >> $jitsi_nginx_site
    echo "    listen 127.0.0.1:$JITSI_ONION_PORT default_server;" >> $jitsi_nginx_site
    echo "    server_name ${JITSI_DOMAIN_NAME};" >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $JITSI_DOMAIN_NAME
    echo '' >> $jitsi_nginx_site
    echo '  # Logs' >> $jitsi_nginx_site
    echo '  access_log off;' >> $jitsi_nginx_site
    echo '  error_log off;' >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    echo '  # Root' >> $jitsi_nginx_site
    echo "  root /var/www/${JITSI_DOMAIN_NAME}/htdocs;" >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    echo '  index index.html;' >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    echo '  location ~ ^/([a-zA-Z0-9=\?]+)$ {' >> $jitsi_nginx_site
    echo '      rewrite ^/(.*)$ / break;' >> $jitsi_nginx_site
    echo '  }' >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    echo '  location / {' >> $jitsi_nginx_site
    function_check nginx_limits
    nginx_limits $JITSI_DOMAIN_NAME '15m'
    echo '  }' >> $jitsi_nginx_site
    echo '' >> $jitsi_nginx_site
    echo '  location /http-bind {' >> $jitsi_nginx_site
    echo '      proxy_pass      http://localhost:5280/http-bind;' >> $jitsi_nginx_site
    echo '      proxy_set_header X-Forwarded-For $remote_addr;' >> $jitsi_nginx_site
    echo '      proxy_set_header Host $http_host;' >> $jitsi_nginx_site
    echo '  }' >> $jitsi_nginx_site
    echo '}' >> $jitsi_nginx_site

    function_check create_site_certificate
    create_site_certificate ${JITSI_DOMAIN_NAME} 'yes'

    if [ -f /etc/ssl/certs/${JITSI_DOMAIN_NAME}.crt ]; then
        mv /etc/ssl/certs/${JITSI_DOMAIN_NAME}.crt /etc/ssl/certs/${JITSI_DOMAIN_NAME}.pem
    fi
    if [ -f /etc/ssl/certs/${JITSI_DOMAIN_NAME}.pem ]; then
        chown jitsi: /etc/ssl/certs/${JITSI_DOMAIN_NAME}.pem
    fi
    if [ -f /etc/ssl/private/${JITSI_DOMAIN_NAME}.key ]; then
        chown jitsi: /etc/ssl/private/${JITSI_DOMAIN_NAME}.key
    fi

    function_check nginx_ensite
    nginx_ensite ${JITSI_DOMAIN_NAME}

    set_completion_param "jitsi domain" "$JITSI_DOMAIN_NAME"

    chown -R www-data:www-data /var/www/${JITSI_DOMAIN_NAME}/htdocs
    systemctl restart nginx
}

function install_jitsi {
    if [[ "$(can_install_videobridge)" == "0" ]]; then
        echo $'jitsi meet/videobridge can only be installed on i386 or amd64 architectures'
        exit 83562
    fi

    if [ ! ${JITSI_DOMAIN_NAME} ]; then
        echo $'No domain name was given for jitsi'
        exit 47682
    fi

    if [ ! -d /etc/prosody ]; then
        echo $'xmpp must be installed before installing jitsi'
        exit 62394
    fi

    if [[ "${JITSI_DOMAIN_NAME}" == "${DEFAULT_DOMAIN_NAME}" ]]; then
        echo $'The jitsi domain name should not be the same as the main domain name'
        exit 78372
    fi

    if [ ! ${JITSI_VIDEOBRIDGE_SECRET} ]; then
        JITSI_VIDEOBRIDGE_SECRET="$(create_password 30)"
    fi
    if [ ! ${JITSI_FOCUS_SECRET} ]; then
        JITSI_FOCUS_SECRET="$(create_password 30)"
    fi
    if [ ! ${JITSI_CONFERENCE_SECRET} ]; then
        JITSI_CONFERENCE_SECRET="$(create_password 30)"
    fi

    create_jitsi_subdomains
    install_jitsi_videobridge
    install_jitsi_jicofo
    install_jitsi_meet

    function_check add_ddns_domain
    add_ddns_domain $JITSI_DOMAIN_NAME

    APP_INSTALLED=1
}