#!/bin/sh
#
# FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
# Copyright (C) 2005-2016, Anthony Minessale II <anthm@freeswitch.org>
#
# Version: MPL 1.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/F
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
#
# The Initial Developer of the Original Code is
# Michael Jerris <mike@jerris.com>
# Portions created by the Initial Developer are Copyright (C)
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#
#  Sergey Safarov <s.safarov@gmail.com>
#

if [ "$1" = 'freeswitch' ]; then
    BASEURL=https://files.freeswitch.org/releases/sounds/
    PID_FILE=/var/run/freeswitch/freeswitch.pid

    get_password() {
        < /dev/urandom tr -dc _A-Z-a-z-0-9\!\^\*\$\#\@\% | head -c${1:-24};echo;
    }

    get_sound_version() {
        local SOUND_TYPE=$1
        grep "$SOUND_TYPE" sounds_version.txt | sed -E "s/$SOUND_TYPE\s+//"
    }

    wget_helper() {
        local SOUND_FILE=$1
        grep -q $SOUND_FILE /usr/share/freeswitch/sounds/soundfiles_present.txt 2> /dev/null
        if [ "$?" -eq 0 ]; then
            echo "Skipping download of $SOUND_FILE. Already present"
            return
        fi
        curl "$BASEURL/$SOUND_FILE" > "$SOUND_FILE"
        if [ -f $SOUND_FILE ]; then
            echo $SOUND_FILE >> /usr/share/freeswitch/sounds/soundfiles_present.txt
        fi
    }

    download_sound_rates() {
        local i
        local f
        local SOUND_TYPE=$1
        local SOUND_VERSION=$2

        for i in $SOUND_RATES
        do
            f=freeswitch-sounds-$SOUND_TYPE-$i-$SOUND_VERSION.tar.gz
            echo "Downloading $f"
            wget_helper $f
        done
    }

    download_sound_types() {
        local i
        local SOUND_VERSION
        for i in $SOUND_TYPES
        do
            SOUND_VERSION=$(get_sound_version $i)
            download_sound_rates $i $SOUND_VERSION
        done
    }

    extract_sound_files() {
        local SOUND_FILES=freeswitch-sounds-*.tar.gz
        for f in $SOUND_FILES
        do
            if [ -f $f ]; then
                echo "Extracting file $f"
                tar xzf "$f" -C /usr/share/freeswitch/sounds/
            fi
        done
    }

    delete_archives() {
        local FILES_COUNT=$(ls -1 freeswitch-sounds-*.tar.gz 2> /dev/null | wc -l)
        if [ "$FILES_COUNT" -ne 0 ]; then
            echo "Removing downloaded 'tar.gz' archives"
            rm -f freeswitch-sounds-*.tar.gz
        fi
    }

    SOUND_RATES=$(echo "$SOUND_RATES" | sed -e 's/:/\n/g')
    SOUND_TYPES=$(echo "$SOUND_TYPES" | sed -e 's/:/\n/g')

    if [ -z "$SOUND_RATES" -o -z "$SOUND_TYPES" ]; then
        echo "Environment variables 'SOUND_RATES' or 'SOUND_TYPES' not defined. Skipping sound files checking."
    else
        download_sound_types
        extract_sound_files
        delete_archives
    fi

    if [ "$EPMD" = "true" ]; then
        /usr/bin/epmd -daemon
    fi

    if [ ! -f "/etc/freeswitch/freeswitch.xml" ]; then
        SIP_PASSWORD=$(get_password)
        mkdir -p /etc/freeswitch
        cp -varf /usr/share/freeswitch/conf/vanilla/* /etc/freeswitch/
        sed -i -e "s/default_password=.*\?/default_password=$SIP_PASSWORD\"/" /etc/freeswitch/vars.xml
        echo "New FreeSwitch password for SIP calls set to '$SIP_PASSWORD'"
    fi

    chown -R freeswitch:freeswitch /etc/freeswitch
    chown -R freeswitch:freeswitch /var/lib/freeswitch
    chown -R freeswitch:freeswitch /var/run/freeswitch
    chown -R freeswitch:freeswitch /var/log/freeswitch

    trap '/usr/bin/freeswitch -stop' TERM

    if [ -d /docker-entrypoint.d ]; then
        for f in /docker-entrypoint.d/*.sh; do
            [ -f "$f" ] && . "$f"
        done
    fi
    su-exec freeswitch:freeswitch /usr/bin/freeswitch -nonat -c &
    pid="$!"

    wait $pid
    exit 0
fi

exec "$@"