#!/bin/bash
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# Icecast application
#
# Notes: An attempt was made to get ices2 running with systemd, but that
#        was very unsuccessful. Instead there's a hacky cron entry which
#        starts icecast2 and ices2 if necessary
#
# 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='full'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1
SHOW_ICANN_ADDRESS_ON_ABOUT=0

ICECAST_DOMAIN_NAME=
ICECAST_CODE=
ICECAST_PORT=8005
ICECAST_ONION_PORT=8146
ICECAST_DIR=/icestream
ICECAST_PLAYLIST_FILE=/etc/ices2/playlist.txt
ICECAST_LOGIN_TEXT=$"Icecast login"

ICECAST_SHORT_DESCRIPTION=$'Icecast'
ICECAST_DESCRIPTION=$'Icecast'
ICECAST_MOBILE_APP_URL=

icecast_variables=(MY_USERNAME
                   MY_EMAIL_ADDRESS
                   ONION_ONLY
                   ICECAST_DOMAIN_NAME
                   ICECAST_CODE
                   DEFAULT_LANGUAGE)

function icecast_rescan {
    if [ -d $ICECAST_DIR ]; then
        if [ -f $ICECAST_PLAYLIST_FILE ]; then
            rm $ICECAST_PLAYLIST_FILE
        fi
        icecast_add_file_to_playlist $ICECAST_DIR
    fi
}

function icecast_update_daemon {
    systemctl stop icecast2
    if [ -f /etc/init.d/icecast2 ]; then
        rm /etc/init.d/icecast2
    fi

    { echo '#!/bin/sh';
      echo "kill \$(pidof ices2)";
      echo 'systemctl stop icecast2'; } > /usr/bin/stop_icecast
    chmod +x /usr/bin/stop_icecast

    # Note that the sleep here actually is important
    { echo '#!/bin/bash';
      echo "isrunning=\$(ps aux | grep ices2)";
      echo "if [[ \"\$isrunning\" != *\"ices-playlist\"* ]]; then";
      echo '    systemctl start icecast2';
      echo '    sleep 3';
      echo '    cd /etc/ices2';
      echo '    ices2 ices-playlist.xml';
      echo 'fi'; } > /usr/bin/start_icecast
    chmod +x /usr/bin/start_icecast

    { echo '[Unit]';
      echo 'Description=Icecast';
      echo 'After=network.target';
      echo 'After=tor.service';
      echo '';
      echo '[Service]';
      echo 'User=icecast2';
      echo 'Group=icecast';
      echo 'ExecStart=/usr/bin/icecast2 -c /etc/icecast2/icecast.xml';
      echo 'Restart=on-failure';
      echo 'RestartSec=10';
      echo '';
      echo '[Install]';
      echo 'WantedBy=multi-user.target'; } > /etc/systemd/system/icecast2.service

    chown -R icecast2:icecast /etc/ices2
    chown -R icecast2:icecast /etc/icecast2
    systemctl daemon-reload
    systemctl enable icecast2

    if ! grep -q "start_icecast" /etc/crontab; then
        cron_add_mins 1 '/usr/bin/start_icecast 2> /dev/null'
    fi
}

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

    stop_icecast

    sed -i  -e "s|<source-password>[^<]*</source-password>|<source-password>$new_user_password</source-password>|" \
        -e "s|<relay-password>[^<]*</relay-password>|<relay-password>$new_user_password</relay-password>|" \
        -e "s|<admin-password>[^<]*</admin-password>|<admin-password>$new_user_password</admin-password>|" \
        /etc/icecast2/icecast.xml
    sed -i "s|<password>.*|<password>${new_user_password}</password>|g" /etc/ices2/ices-playlist.xml

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

function logging_on_icecast {
    echo -n ''
}

function logging_off_icecast {
    echo -n ''
}

function reconfigure_icecast {
    echo -n ''
}

function icecast_convert_files {
    clear
    cd "${1}" || exit 2346824648

    echo $'Converting any mp3 files to ogg format'
    find . -type f -name '*.mp3' -exec bash -c 'ffmpeg -i "$0" -c:a libvorbis -q:a 4 "${0/%mp3/ogg}"' '{}' \;
    find . -name "*.mp3" -print0 | xargs -0 rm -f

    echo $'Converting any mp4 files to ogv format'
    find . -type f -name '*.mp4' -exec bash -c 'ffmpeg -i "$0" -c:a libvorbis -q:a 4 "${0/%mp3/ogv}"' '{}' \;
    find . -name "*.mp4" -print0 | xargs -0 rm -f

    chown -R icecast2:icecast $ICECAST_DIR
}

function icecast_add_file_to_playlist {
    files_dir="${1}"
    if [ ! -d "$files_dir" ]; then
        return
    fi

    echo $'Adding ogg files to playlist'
    find "$files_dir" -type f -name '*.ogg' -print0 | while read -r -d $'\0' file; do
        if ! grep -q "$file" $ICECAST_PLAYLIST_FILE; then
            echo "$file" >> $ICECAST_PLAYLIST_FILE
        fi
    done

    echo $'Adding ogv files to playlist'
    find "$files_dir" -type f -name '*.ogv' -print0 | while read -r -d $'\0' file; do
        if ! grep -q "$file" $ICECAST_PLAYLIST_FILE; then
            echo "$file" >> $ICECAST_PLAYLIST_FILE
        fi
    done

    chown icecast2:icecast $ICECAST_PLAYLIST_FILE
    stop_icecast
    start_icecast
}

function icecast_import_from_directory {
    data=$(mktemp 2>/dev/null)
    dialog --title "Choose a directory containing stream files" --dselect "/home/$MY_USERNAME/" 30 60 2> "$data"
    selected_dir=$(cat "$data")
    rm -f "$data"
    if [[ "$selected_dir" == "$ICECAST_DIR" ]]; then
        return
    fi
    if [ ! -d "$selected_dir" ]; then
        return
    fi
    if [[ "$selected_dir" == "/home/$MY_USERNAME/" ]]; then
        return
    fi
    if [[ "$selected_dir" == "/home/$MY_USERNAME/."* ]]; then
        return
    fi
    if [[ "$selected_dir" == *"/Maildir" || "$selected_dir" == *"/Sync" ]]; then
        return
    fi

    dialog --title $"Import stream files directory into Icecast" \
           --backtitle $"Freedombone Control Panel" \
           --defaultno \
           --yesno $"\\nImport the directory:\\n\\n  $selected_dir" 12 75
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac

    if [ ! -d $ICECAST_DIR ]; then
        mkdir -p $ICECAST_DIR
    fi

    dest_dir=$(basename "$selected_dir")
    # shellcheck disable=SC2086
    mv $selected_dir $ICECAST_DIR

    icecast_convert_files "$ICECAST_DIR/$dest_dir"
    icecast_add_file_to_playlist "$ICECAST_DIR/$dest_dir"

    dialog --title $"Import stream files directory into Icecast" \
           --msgbox $"Import success" 6 40
}

function icecast_import_from_usb {
    clear
    detect_usb_drive

    if [ ! -b "$USB_DRIVE" ]; then
        dialog --title $"Import stream files from USB drive" --msgbox $'No USB drive found' 6 50
        return
    fi

    backup_mount_drive "${USB_DRIVE}"
    if [ ! -d "$USB_MOUNT$ICECAST_DIR" ]; then
        dialog --title $"Import stream files from USB drive" --msgbox $'No stream files directory found on USB drive' 6 50
        backup_unmount_drive "${USB_DRIVE}"
    fi
    cp -ru "$USB_MOUNT$ICECAST_DIR/"* $ICECAST_DIR
    backup_unmount_drive "${USB_DRIVE}"
    icecast_convert_files $ICECAST_DIR
    dialog --title $"Import stream files from USB drive" --msgbox $'Import complete. You may now remove the USB drive' 6 50
}

function icecast_export_to_usb {
    clear
    detect_usb_drive

    if [ ! -b "$USB_DRIVE" ]; then
        dialog --title $"Export stream files to USB drive" --msgbox $'No USB drive found' 6 50
        return
    fi

    backup_mount_drive "${USB_DRIVE}"
    if [ ! -d "$USB_MOUNT$ICECAST_DIR" ]; then
        mkdir -p "$USB_MOUNT$ICECAST_DIR"
    fi
    cp -ru "$ICECAST_DIR/"* "$USB_MOUNT$ICECAST_DIR"
    backup_unmount_drive "${USB_DRIVE}"
    dialog --title $"Export stream files to USB drive" --msgbox $'Export complete. You may now remove the USB drive' 6 50
}

function icecast_format_drive {
    detect_usb_drive
    data=$(mktemp 2>/dev/null)
    dialog --title $"Format USB drive $USB_DRIVE for stream file storage" \
           --backtitle $"Freedombone Control Panel" \
           --defaultno \
           --yesno $"\\nPlease confirm that you wish to format drive\\n\\n    ${USB_DRIVE}\\n\\nAll current data on the drive will be lost, and you will be prompted to give a password used to encrypt the drive.\\n\\nDANGER: If you screw up here and format the wrong drive it's your own fault!" 16 60
    sel=$?
    case $sel in
        1)  rm -f "$data"
            return;;
        255) rm -f "$data"
             return;;
    esac
    rm -f "$data"

    clear
    echo ''
    echo $"Formatting drive $USB_DRIVE. ALL CONTENTS WILL BE LOST."
    echo ''
    "${PROJECT_NAME}-format" "$USB_DRIVE"
    dialog --title $"Format USB drive $USB_DRIVE for stream file storage" --msgbox $'Format complete. You may now export stream files or remove the USB drive' 6 50
}

function icecast_edit_playlist {
    editor $ICECAST_PLAYLIST_FILE
    stop_icecast
    start_icecast
}

function icecast_change_login {
    read_config_param "$MY_USERNAME"
    ICECAST_USER_PASSWORD=$("${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a icecastuser)

    data=$(mktemp 2>/dev/null)
    dialog --title $"Change Icecast stream visitor login" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $"Enter the new login password for stream visitors" 8 60 "$ICECAST_USER_PASSWORD" 2>"$data"
    sel=$?
    case $sel in
        0)  ICECAST_USER_PASSWORD=$(<"$data")
            if [[ "$ICECAST_USER_PASSWORD" != *' '* ]]; then
                if [ ${#ICECAST_USER_PASSWORD} -gt 8 ]; then
                    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a icecastuser -p "$ICECAST_USER_PASSWORD"
                    dialog --title $"Change Icecast stream visitor login" \
                           --msgbox $"Password changed to $ICECAST_USER_PASSWORD" 6 75
                fi
            fi
            ;;
    esac
    rm -f "$data"
}

function icecast_enable_login {
    dialog --title $"Enable Icecast login" \
           --backtitle $"Freedombone Control Panel" \
           --defaultno \
           --yesno $"\\nDo you want to add a login so that random web users can't access your stream?" 10 60
    sel=$?
    case $sel in
        0) if grep -q '#auth_basic' /etc/nginx/sites-available/icecast; then
               sed -i 's|#auth_basic|auth_basic|g' /etc/nginx/sites-available/icecast
               systemctl restart nginx
           fi
           read_config_param "$MY_USERNAME"
           ICECAST_USER_PASSWORD=$("${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a icecastuser)
           dialog --title $"Enable Icecast login" \
                  --msgbox $"Icecast logins are now enabled with the password $ICECAST_USER_PASSWORD" 6 65
           ICECAST_USER_PASSWORD=
           ;;
        1) if ! grep -q '#auth_basic' /etc/nginx/sites-available/icecast; then
               sed -i 's|auth_basic|#auth_basic|g' /etc/nginx/sites-available/icecast
               systemctl restart nginx
           fi
           dialog --title $"Disable Icecast login" \
                  --msgbox $"Icecast logins are now disabled. Anyone can access your stream." 6 65
           ;;
    esac
}

function icecast_set_stream_name {
    data=$(mktemp 2>/dev/null)
    dialog --backtitle $"Freedombone Control Panel" \
           --title $"Change Icecast stream details" \
           --form "\\n" 8 60 4 \
           $"Stream name:" 1 1 "Example stream name" 1 18 40 1000 \
           $"Description:" 2 1 "A short description of your stream" 2 18 40 1000 \
           $"Genre:" 3 1 "Example genre" 3 18 40 1000 \
           2> "$data"
    sel=$?
    case $sel in
        1) rm -f "$data"
           return;;
        255) rm -f "$data"
             return;;
    esac
    stream_name=$(sed -n 1p < "$data")
    stream_description=$(sed -n 2p < "$data")
    stream_genre=$(sed -n 3p < "$data")
    if [ ${#stream_name} -gt 2 ]; then
        sed -i "s|<name>.*|<name>${stream_name}</name>|g" /etc/ices2/ices-playlist.xml
    fi
    if [ ${#stream_description} -gt 2 ]; then
        sed -i "s|<description>.*|<description>${stream_description}</description>|g" /etc/ices2/ices-playlist.xml
    fi
    if [ ${#stream_genre} -gt 2 ]; then
        sed -i "s|<genre>.*|<genre>${stream_genre}</genre>|g" /etc/ices2/ices-playlist.xml
    fi
    rm -f "$data"
    stop_icecast
    start_icecast
}

function icecast_set_maximum_streams {
    data=$(mktemp 2>/dev/null)
    dialog --title $"Set the maximum clients" \
           --backtitle $"Freedombone Control Panel" \
           --inputbox $"Maximum number of clients" 8 40 "10" 2>"$data"
    sel=$?
    case $sel in
        0)
            max_clients=$(<"$data")
            if [ ${#max_clients} -gt 0 ]; then
                if [[ "$max_clients" != *' '* ]]; then
                    # shellcheck disable=SC2076
                    if [[ "$max_clients" =~ '^[0-9]+$' ]] ; then
                        sed -i "s|<clients>.*|<clients>${max_clients}</clients>|g" /etc/icecast2/icecast.xml
                        stop_icecast
                        start_icecast
                        dialog --title $"Set the maximum clients" \
                               --msgbox $"\\nMaximum Icecast clients was set to ${max_clients}" 8 50
                    fi
                fi
            fi
            ;;
    esac
    rm -f "$data"
}

function configure_interactive_icecast {
    W=(1 $"Import stream files from directory"
       2 $"Import stream files from USB drive"
       3 $"Format a USB drive for stream file storage"
       4 $"Export stream files to USB drive"
       5 $"Manually edit playlist"
       6 $"Enable login for stream visitors"
       7 $"Change password for stream visitors"
       8 $"Re-scan playlist"
       9 $"Restart stream"
       10 $"Set Stream Name/Description/Genre"
       11 $"Set maximum number of clients/streams")

    while true
    do
        # shellcheck disable=SC2068
        selection=$(dialog --backtitle $"Freedombone Administrator Control Panel" --title $"Icecast" --menu $"Choose an operation, or ESC to exit:" 20 60 11 "${W[@]}" 3>&2 2>&1 1>&3)

        if [ ! "$selection" ]; then
            break
        fi

        case $selection in
            1) icecast_import_from_directory;;
            2) icecast_import_from_usb;;
            3) icecast_format_drive;;
            4) icecast_export_to_usb;;
            5) icecast_edit_playlist;;
            6) icecast_enable_login;;
            7) icecast_change_login;;
            8) clear
               echo $'Rescanning Icecast playlist'
               icecast_rescan;;
            9) clear
               echo $'Restarting Icecast stream'
               stop_icecast
               start_icecast;;
            10) icecast_set_stream_name;;
            11) icecast_set_maximum_streams;;
        esac
    done
}

function upgrade_icecast {
    icecast_update_daemon
}

function backup_local_icecast {
    if [ ! -d $ICECAST_DIR ]; then
        return
    fi
    stop_icecast

    cp /etc/nginx/.icepasswd $ICECAST_DIR
    cp /etc/ices2/ices-playlist.xml $ICECAST_DIR

    function_check backup_directory_to_usb
    backup_directory_to_usb $ICECAST_DIR icecast

    rm $ICECAST_DIR/.icepasswd
    start_icecast
}

function restore_local_icecast {
    if [ ! -d $ICECAST_DIR ]; then
        return
    fi
    stop_icecast
    temp_restore_dir=/root/tempicecast
    function_check restore_directory_from_usb
    restore_directory_from_usb $temp_restore_dir icecast
    if [ -d $temp_restore_dir$ICECAST_DIR ]; then
        cp -r $temp_restore_dir$ICECAST_DIR $ICECAST_DIR/
    else
        cp -r $temp_restore_dir/* $ICECAST_DIR/*
    fi
    cp $ICECAST_DIR/.icepasswd /etc/nginx/.icepasswd
    rm $ICECAST_DIR/.icepasswd
    cp $ICECAST_DIR/ices-playlist.xml /etc/ices2
    rm $ICECAST_DIR/ices-playlist.xml
    chown -R icecast2:icecast $ICECAST_DIR
    chown -R icecast2:icecast /etc/ices2

    start_icecast
    rm -rf $temp_restore_dir
}

function backup_remote_icecast {
    if [ ! -d $ICECAST_DIR ]; then
        return
    fi
    stop_icecast

    cp /etc/nginx/.icepasswd $ICECAST_DIR
    cp /etc/ices2/ices-playlist.xml $ICECAST_DIR

    function_check backup_directory_to_friend
    backup_directory_to_friend $ICECAST_DIR icecast

    rm $ICECAST_DIR/.icepasswd
    start_icecast
}

function restore_remote_icecast {
    if [ ! -d $ICECAST_DIR ]; then
        return
    fi
    stop_icecast
    temp_restore_dir=/root/tempicecast
    function_check restore_directory_from_friend
    restore_directory_from_friend $temp_restore_dir icecast
    if [ -d $temp_restore_dir$ICECAST_DIR ]; then
        cp -r $temp_restore_dir$ICECAST_DIR $ICECAST_DIR/
    else
        cp -r $temp_restore_dir/* $ICECAST_DIR/*
    fi
    cp $ICECAST_DIR/.icepasswd /etc/nginx/.icepasswd
    rm $ICECAST_DIR/.icepasswd
    cp $ICECAST_DIR/ices-playlist.xml /etc/ices2
    rm $ICECAST_DIR/ices-playlist.xml
    chown -R icecast2:icecast $ICECAST_DIR

    start_icecast
    rm -rf $temp_restore_dir
}

function remove_icecast {
    nginx_dissite icecast

    sed -i '/start_icecast/d' /etc/crontab
    stop_icecast
    systemctl disable icecast2
    rm /etc/systemd/system/icecast2.service
    rm /usr/bin/start_icecast
    rm /usr/bin/stop_icecast

    if [ -f /etc/nginx/sites-available/icecast ]; then
        rm /etc/nginx/sites-available/icecast
    fi

    if [ -d /var/www/icecast ]; then
        rm -rf /var/www/icecast
    fi

    apt-get -yq remove --purge icecast2

    if [ -d /etc/icecast2 ]; then
        rm -rf /etc/icecast2
    fi
    if [ -d /etc/ices2 ]; then
        rm -rf /etc/ices2
    fi
    function_check remove_onion_service
    remove_onion_service icecast ${ICECAST_ONION_PORT}
    sed -i '/icecast/d' "$COMPLETION_FILE"
}

function install_icecast {
    apt-get -yq install software-properties-common debconf-utils
    apt-get -yq update

    debconf-set-selections <<< "icecast2 icecast2/icecast-setup boolean false"
    apt-get -yq install icecast2
    apt-get -yq install ices2 ffmpeg apache2-utils

    if [ ! -f /etc/icecast2/icecast.xml ]; then
        echo $'Icecast not installed'
        exit 7923528
    fi

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

    ICECAST_ONION_HOSTNAME=$(add_onion_service icecast 80 ${ICECAST_ONION_PORT})

    sed -i  -e "s|<source-password>[^<]*</source-password>|<source-password>$ICECAST_PASSWORD</source-password>|" \
        -e "s|<relay-password>[^<]*</relay-password>|<relay-password>$ICECAST_PASSWORD</relay-password>|" \
        -e "s|<admin-password>[^<]*</admin-password>|<admin-password>$ICECAST_PASSWORD</admin-password>|" \
        -e "s|<hostname>[^<]*</hostname>|<hostname>$ICECAST_ONION_HOSTNAME</hostname>|" \
        /etc/icecast2/icecast.xml

    sed -i "s|<clients>.*|<clients>10</clients>|g" /etc/icecast2/icecast.xml
    sed -i "s|<port>.*|<port>$ICECAST_PORT</port>|g" /etc/icecast2/icecast.xml
    sed -i "s|<admin-user>.*|<admin-user>$MY_USERNAME</admin-user>|g" /etc/icecast2/icecast.xml
    sed -i "s|<admin>.*|<admin>$MY_EMAIL_ADDRESS</admin>|g" /etc/icecast2/icecast.xml
    sed -i "s|<location>.*|<location>The Interwebs</location>|g" /etc/icecast2/icecast.xml
    #sed -i 's|<!-- <bind-address>.*|<bind-address>127.0.0.1</bind-address>|g' /etc/icecast2/icecast.xml

    if [ ! -d /var/www/icecast/htdocs ]; then
        mkdir -p /var/www/icecast/htdocs
    fi

    icecast_nginx_site=/etc/nginx/sites-available/icecast
    { echo 'server {';
      echo "    listen 127.0.0.1:$ICECAST_ONION_PORT default_server;";
      echo "    server_name $ICECAST_ONION_HOSTNAME;";
      echo '';
      echo '  # Logs';
      echo '  access_log /dev/null;';
      echo '  error_log /dev/null;';
      echo '';
      echo '  location / {'; } > $icecast_nginx_site
    function_check nginx_limits
    nginx_limits "$ICECAST_ONION_HOSTNAME" '15m'
    { echo "      proxy_pass http://localhost:$ICECAST_PORT;";
      echo "      #auth_basic \"${ICECAST_LOGIN_TEXT}\";";
      echo '      #auth_basic_user_file /etc/nginx/.icepasswd;';
      echo '  }';
      echo '}'; } >> $icecast_nginx_site

    if [ ! -d /var/log/ices ]; then
        mkdir -p /var/log/ices
    fi
    if [ ! -d /etc/ices2 ]; then
        mkdir -p /etc/ices2
    fi

    { echo '<?xml version="1.0"?>';
      echo '<ices>';
      echo '    <!-- run in background -->';
      echo '    <background>1</background>';
      echo '    <!-- where logs, etc go. -->';
      echo '    <logpath>/var/log/ices</logpath>';
      echo '    <logfile>ices.log</logfile>';
      echo '    <!-- 1=error,2=warn,3=info,4=debug -->';
      echo '    <loglevel>1</loglevel>';
      echo '    <!-- set this to 1 to log to the console instead of to the file above -->';
      echo '    <consolelog>0</consolelog>';
      echo '';
      echo '    <!-- optional filename to write process id to -->';
      echo '    <!-- <pidfile>/home/ices/ices.pid</pidfile> -->';
      echo '';
      echo '    <stream>';
      echo '        <!-- metadata used for stream listing (not currently used) -->';
      echo '        <metadata>';
      echo '            <name>Example stream name</name>';
      echo '            <genre>Example genre</genre>';
      echo '            <description>A short description of your stream</description>';
      echo '        </metadata>';
      echo '';
      echo '        <!-- input module';
      echo '';
      echo '            The module used here is the playlist module - it has ';
      echo '            "submodules" for different types of playlist. There are';
      echo '            two currently implemented, "basic", which is a simple';
      echo '            file-based playlist, and "script" which invokes a command';
      echo '            to returns a filename to start playing. -->';
      echo '';
      echo '        <input>';
      echo '            <module>playlist</module>';
      echo '            <param name="type">basic</param>';
      echo "            <param name=\"file\">$ICECAST_PLAYLIST_FILE</param>";
      echo '            <!-- random play -->';
      echo '            <param name="random">0</param>';
      echo '            <!-- if the playlist get updated that start at the beginning -->';
      echo '            <param name="restart-after-reread">0</param>';
      echo '            <!-- if set to 1 , plays once through, then exits. -->';
      echo '            <param name="once">0</param>';
      echo '        </input>';
      echo '';
      echo '            <!-- Stream instance';
      echo '            You may have one or more instances here. This allows you to ';
      echo '            send the same input data to one or more servers (or to different';
      echo '            mountpoints on the same server). Each of them can have different';
      echo '            parameters. This is primarily useful for a) relaying to multiple';
      echo '            independent servers, and b) encoding/reencoding to multiple';
      echo '            bitrates.';
      echo '            If one instance fails (for example, the associated server goes';
      echo '            down, etc), the others will continue to function correctly.';
      echo '            This example defines two instances as two mountpoints on the';
      echo '            same server.  -->';
      echo '        <instance>';
      echo '            <!-- Server details:';
      echo '                You define hostname and port for the server here, along with';
      echo '                the source password and mountpoint.  -->';
      echo '            <hostname>localhost</hostname>';
      echo "            <port>$ICECAST_PORT</port>";
      echo "            <password>$ICECAST_PASSWORD</password>";
      echo '            <mount>/example1.ogg</mount>';
      echo '            <!-- Reconnect parameters:';
      echo '                When something goes wrong (e.g. the server crashes, or the';
      echo '                network drops) and ices disconnects from the server, these';
      echo '                control how often it tries to reconnect, and how many times';
      echo '                it tries to reconnect. Delay is in seconds.';
      echo '                If you set reconnectattempts to -1, it will continue ';
      echo '                indefinately. Suggest setting reconnectdelay to a large value';
      echo '                if you do this.';
      echo '            -->';
      echo '            <reconnectdelay>2</reconnectdelay>';
      echo '            <reconnectattempts>5</reconnectattempts> ';
      echo '';
      echo '            <!-- maxqueuelength:';
      echo '                This describes how long the internal data queues may be. This';
      echo '                basically lets you control how much data gets buffered before';
      echo '                ices decides it cant send to the server fast enough, and ';
      echo '                either shuts down or flushes the queue (dropping the data)';
      echo '                and continues. ';
      echo '                For advanced users only.';
      echo '            -->';
      echo '            <maxqueuelength>80</maxqueuelength>';
      echo '';
      echo '            <!-- Live encoding/reencoding:';
      echo '                Currrently, the parameters given here for encoding MUST';
      echo '                match the input data for channels and sample rate. That ';
      echo '                restriction will be relaxed in the future.';
      echo '                Remove this section if you dont want your files getting reencoded.';
      echo '            -->';
      echo '            <encode>  ';
      echo '                <nominal-bitrate>64000</nominal-bitrate>';
      echo '                <samplerate>22050</samplerate>';
      echo '                <channels>1</channels>';
      echo '            </encode>';
      echo '        </instance>';
      echo '';
      echo '        </stream>';
      echo '</ices>'; } > /etc/ices2/ices-playlist.xml

    sed -i 's|ENABLE=.*|ENABLE=true|g' /etc/default/icecast2

    if [ ! -d $ICECAST_DIR ]; then
        mkdir $ICECAST_DIR
    fi
    chown -R icecast2:icecast $ICECAST_DIR


    # create a password for users
    ICECAST_USER_PASSWORD="$(create_password "${MINIMUM_PASSWORD_LENGTH}")"
    if grep -q "$MY_USERNAME:" /etc/nginx/.icepasswd; then
        sed -i "/$MY_USERNAME:/d" /etc/nginx/.icepasswd
    fi
    echo "$ICECAST_USER_PASSWORD" | htpasswd -i -s -c /etc/nginx/.icepasswd "$MY_USERNAME"
    if [ ! -f /etc/nginx/.icepasswd ]; then
        echo $'/etc/nginx/.icepasswd not found'
        exit 73528235
    fi

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a icecast -p "$ICECAST_PASSWORD"
    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a icecastuser -p "$ICECAST_USER_PASSWORD"

    groupadd icecast
    useradd -c "Icecast system account" -d /etc/icecast2 -m -r -g icecast icecast2

    icecast_update_daemon
    nginx_ensite icecast
    systemctl restart nginx
    icecast_rescan
    start_icecast

    APP_INSTALLED=1
}

function install_interactive_icecast {
    install_icecast
}

# NOTE: deliberately no exit 0