#!/bin/bash

: ${ROOT_MAILTO:="root@localhost"}
: ${ASTERISK_VER:=""}
: ${FREEPBX_VER:=""}
: ${APP_DATA:=""}

declare -A appDataDirs=(
  [CRONDIR]=/var/spool/cron
  [ASTHOME]=/home/asterisk
  [ASTETCDIR]=/etc/asterisk
  [ASTVARLIBDIR]=/var/lib/asterisk
  [ASTSPOOLDIR]=/var/spool/asterisk
  [ASTRUNDIR]=/var/run/asterisk
  [HTTPDHOME]=/var/www
  [HTTPDLOGDIR]=/var/log/apache2
  [CERTBOTETCDIR]=/etc/letsencrypt
  [ASTLOGDIR]=/var/log/asterisk
  [F2BLOGDIR]=/var/log/fail2ban
  [F2BLIBDIR]=/var/lib/fail2ban
  [SSLCRTDIR]=/etc/pki/pbx
  [ROOTHOME]=/root
)

declare -A appFilesConf=(
  [FPBXCFGFILE]=/etc/freepbx.conf
  [AMPCFGFILE]=/etc/amportal.conf
)

declare -A appCacheDirs=(
  [ASTRUNDIR]=/var/run/asterisk
  [PHPOPCACHEDIR]=/var/lib/php/opcache
  [PHPSESSDIR]=/var/lib/php/session
  [PHPWSDLDIR]=/var/lib/php/wsdlcache
)

declare -A fpbxDirs=(
  [AMPWEBROOT]=/var/www/html
  [ASTETCDIR]=/etc/asterisk
  [ASTVARLIBDIR]=/var/lib/asterisk
  [ASTAGIDIR]=/var/lib/asterisk/agi-bin
  [ASTSPOOLDIR]=/var/spool/asterisk
  [ASTRUNDIR]=/var/run/asterisk
  [ASTLOGDIR]=/var/log/asterisk
  [AMPBIN]=/var/lib/asterisk/bin
  [AMPSBIN]=/var/lib/asterisk/sbin
  [AMPCGIBIN]=/var/www/cgi-bin
  [AMPPLAYBACK]=/var/lib/asterisk/playback
  [CERTKEYLOC]=/etc/asterisk/keys
)

declare -A fpbxDirsExtra=(
  [ASTMODDIR]=/usr/lib/asterisk/modules
)

declare -A fpbxFilesLog=(
  [FPBXDBUGFILE]=/var/log/asterisk/freepbx-debug.log
  [FPBXLOGFILE]=/var/log/asterisk/freepbx.log
  [FPBXSECLOGFILE]=/var/log/asterisk/freepbx_security.log
)

declare -A fpbxSipSettings=(
  [rtpstart]=${APP_PORT_RTP_START}
  [rtpend]=${APP_PORT_RTP_END}
  [udpport-0.0.0.0]=${APP_PORT_PJSIP}
  [tcpport-0.0.0.0]=${APP_PORT_PJSIP}
  [bindport]=${APP_PORT_SIP}
)

[ ! -z ${APP_FQDN} ] && HOSTNAME="${APP_FQDN}"
: ${SERVERNAME:=$HOSTNAME}
: ${MYSQL_SERVER:="db"}
: ${MYSQL_ROOT_PASSWORD:=""}
: ${MYSQL_DATABASE:="asterisk"}
: ${MYSQL_USER:="asterisk"}
: ${MYSQL_PASSWORD:=""}
: ${APP_PORT_MYSQL:="3306"}
: ${HTTPD_HTTPS_ENABLED:="true"}
: ${HTTPD_REDIRECT_HTTP_TO_HTTPS:="false"}
: ${HTTPD_ALLOW_FROM:=""}
: ${CRON_ENABLED:="true"}
: ${HTTPD_ENABLED:="true"}
: ${ASTERISK_ENABLED:="false"}
: ${RRTPBX_ENABLED:="true"}
: ${FAIL2BAN_ENABLED:="true"}
: ${POSTFIX_ENABLED:="true"}
: ${SMTP_RELAYHOST:=""}
: ${SMTP_RELAYHOST_USERNAME:=""}
: ${SMTP_RELAYHOST_PASSWORD:=""}
: ${SMTP_ALLOWED_SENDER_DOMAINS:=""}
: ${SMTP_MESSAGE_SIZE_LIMIT:="0"}
: ${SMTP_MAIL_FROM:=""}
: ${RELAYHOST:="$SMTP_RELAYHOST"}
: ${RELAYHOST_USERNAME:="$SMTP_RELAYHOST_USERNAME"}
: ${RELAYHOST_PASSWORD:="$SMTP_RELAYHOST_PASSWORD"}
: ${ALLOWED_SENDER_DOMAINS:="$SMTP_ALLOWED_SENDER_DOMAINS"}
: ${MESSAGE_SIZE_LIMIT:="$SMTP_MESSAGE_SIZE_LIMIT"}
: ${SUPERVISOR_DIR:="/etc/supervisor/conf.d"}
: ${HTTPD_CONF_DIR:="/etc/apache2"}
: ${PHP_CONF:="/etc/php/7.4/apache2/php.ini"}

dirEmpty() {
    [ -z "$(ls -A "$1/")" ]
}

symlinkDir() {
  local dirOriginal="$1"
  local dirCustom="$2"
  echo "---> directory data override detected: original:[$dirOriginal] custom:[$dirCustom]"
  if [ -e "$dirOriginal" ] && dirEmpty "$dirCustom"; then
    echo "---> empty dir '$dirCustom' detected copying '$dirOriginal' contents to '$dirCustom'..."
    rsync -a -q "$dirOriginal/" "$dirCustom/"
  fi
  if [ ! -e "$dirOriginal" ]; then
      echo "---> WARNING: original data directory doesn't exist... creating empty directory: '$dirOriginal'"
      mkdir -p "$dirOriginal"
  fi
  if [ -e "$dirOriginal" ]; then
      echo -e "---> renaming '${dirOriginal}' to '${dirOriginal}.dist'"
      mv "$dirOriginal" "$dirOriginal".dist
  fi
  echo "---> symlinking '$dirCustom' to '$dirOriginal'"
  ln -s "$dirCustom" "$dirOriginal"
}

symlinkFile() {
  local fileOriginal="$1"
  local fileCustom="$2"
  echo "--> file data override detected: original:[$fileOriginal] custom:[$fileCustom]"
  if [ -e "$fileOriginal" ]; then
      if [ ! -e "$fileCustom" ]; then
        echo "---> INFO: detected not existing file '$fileCustom'. copying '$fileOriginal' to '$fileCustom'..."
        rsync -a -q "$fileOriginal" "$fileCustom"
      fi
      echo -e "---> renaming '${fileOriginal}' to '${fileOriginal}.dist'... "
      mv "$fileOriginal" "$fileOriginal".dist
    else
      echo "---> WARNING: original data file doesn't exist... creating symlink from a not existing source: '$fileOriginal'"
  fi
  echo "---> symlinking '$fileCustom' to '$fileOriginal'"
  [ ! -e "$(dirname "$fileCustom")" ] && mkdir -p "$(dirname "$fileCustom")"
  ln -s "$fileCustom" "$fileOriginal"
}

chkService() {
  local SERVICE_VAR="$1"
  eval local SERVICE_ENABLED="\$$(echo $SERVICE_VAR)"
  eval local SERVICE_DAEMON="\$$(echo $SERVICE_VAR | sed 's/_.*//')_DAEMON"
  local SERVICE="$(echo $SERVICE_VAR | sed 's/_.*//' | sed -e 's/\(.*\)/\L\1/')"
  [ -z "$SERVICE_DAEMON" ] && local SERVICE_DAEMON="$SERVICE"
  if [ "$SERVICE_ENABLED" = "true" ]; then
    autostart=true
    echo "=> Enabling $SERVICE_DAEMON service... because $SERVICE_VAR=$SERVICE_ENABLED"
    echo "--> configuring $SERVICE_DAEMON service..."
    cfgService_$SERVICE
   else
    autostart=false
    echo "=> Disabling $SERVICE_DAEMON service... because $SERVICE_VAR=$SERVICE_ENABLED"
  fi
  sed "s/autostart=.*/autostart=$autostart/" -i ${SUPERVISOR_DIR}/$SERVICE_DAEMON.conf
}

cfgService_postfix() {
postconf -e inet_protocols=ipv4

if [ ! -z "$HOSTNAME" ]; then
  postconf -e myhostname="$HOSTNAME"
else
  postconf -# myhostname
fi

postconf -# relayhost
postconf -# smtp_sasl_auth_enable
postconf -# smtp_sasl_password_maps
postconf -# smtp_sasl_security_options
if [ ! -z "$MYNETWORKS" ]; then
  postconf -e mynetworks=$MYNETWORKS
else
  postconf -e "mynetworks=127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
fi
[ ! -f /etc/aliases ] && echo "postmaster: root" > /etc/aliases
[ ${ROOT_MAILTO} ] && echo "root: ${ROOT_MAILTO}" >> /etc/aliases && newaliases
postconf -e "maillog_file = /dev/stdout"
postconf -e "inet_protocols = ipv4"
postconf -e "mailbox_size_limit = 0"
postconf -e "message_size_limit = ${MESSAGE_SIZE_LIMIT}"
if [ ! -z "$SMTP_MAIL_FROM" ]; then
  echo "/.+/ $SMTP_MAIL_FROM" > /etc/postfix/sender_canonical_maps
  echo "/From:.*/ REPLACE From: $SMTP_MAIL_FROM" > /etc/postfix/header_checks
  postconf -e "sender_canonical_maps = regexp:/etc/postfix/sender_canonical_maps"
  postconf -e "smtp_header_checks = regexp:/etc/postfix/header_checks"
fi
postconf -M telegram-mailgate/unix="telegram-mailgate unix   -   n   n   -   -   pipe flags= user=list argv=/usr/local/bin/telegram-mailgate.py --key ${TG_BOT_APIKEY} --chatid ${TG_BOT_CHATID} --queue-id \${queue_id} \${recipient}"
postconf -e "content_filter = telegram-mailgate"
}

cfgService_cron() {
  ls -la /var/spool/cron/crontabs
}

cfgService_letsencrypt() {
  if [ -e "/etc/letsencrypt/live/${APP_FQDN}/privkey.pem" ] ; then
    echo "--> Let's Encrypt certificate already exist... trying to renew"
    certbot renew --standalone
  else
    echo "--> generating HTTPS Let's Encrypt certificate"
    certbot certonly --standalone --expand -n --agree-tos --email ${ROOT_MAILTO} -d ${APP_FQDN}
  fi
  echo '#!/bin/bash
/usr/bin/certbot renew --noninteractive --no-random-sleep-on-renew --deploy-hook "/usr/bin/supervisorctl restart httpd"
exit $?' > /etc/cron.daily/certbot && chmod 755 /etc/cron.daily/certbot
}

iniParser() {
  ini="$@"
  while read setting ; do
    section="$(echo $setting | awk -F" " '{print $1}')"
    k=$(echo $setting | sed -e "s/^${section} //" | awk -F"=" '{print $1}' | tr '[:upper:]' '[:lower:]')
    v=$(echo $setting | sed -e "s/'//g" | awk -F"=" '{print $2}')
    sed -e "/^\[${section}\]$/I,/^\(\|;\|#\)\[/ s/^\(;\|#\)${k}/${k}/" -e "/^\[${section}\]$/I,/^\[/ s|^${k}.*=.*|${k}=${v}|I" -i "${ini}"
  done
}

cfgService_fail2ban() {
  echo "--> reconfiguring Fail2ban settings..."
  echo "DEFAULT LOGTARGET=/var/log/fail2ban/fail2ban.log" | iniParser /etc/fail2ban/fail2ban.conf
  sed "s/%(mta)s-whois\[/%(mta)s\[/g" -i /etc/fail2ban/jail.conf
  touch /var/log/fail2ban/fail2ban.log
  set | grep ^"FAIL2BAN_" | sed -e 's/^FAIL2BAN_//' | sed -e 's/_/ /' | iniParser "/etc/fail2ban/jail.d/99-local.conf"
}

cfgService_httpd() {
  if [ "${HTTPD_HTTPS_ENABLED}" = "true" ]; then
    echo "--> enabling Apache ssl module"
    a2enmod ssl
  else
    echo "--> disabling Apache ssl module"
    a2dismod ssl
  fi
  a2enmod rewrite
  rm -f /var/www/html/index.html
  echo "--> setting Apache ServerName to ${SERVERNAME}"
  sed "s/#ServerName .*/ServerName ${SERVERNAME}/" -i "${HTTPD_CONF_DIR}/sites-enabled/000-default.conf"
  echo "ServerName ${SERVERNAME}" >> "${HTTPD_CONF_DIR}/apache2.conf"
  echo "--> setting Apache user and group"
  sed -i "s/^User.*/User ${APP_USR}/" /etc/apache2/apache2.conf
  sed -i "s/^Group.*/Group ${APP_GRP}/" /etc/apache2/apache2.conf
  sed -i "s/AllowOverride None/AllowOverride All/" /etc/apache2/apache2.conf

print_AllowFrom() {
  if [ ! -z "${HTTPD_ALLOW_FROM}" ]; then
      for IP in $(echo ${HTTPD_ALLOW_FROM} | sed -e "s/'//g") ; do
        echo "    Require ip ${IP}"
      done
  else
      echo "    Require all granted"
  fi
}

echo "# default HTTP virtualhost
<VirtualHost *:${APP_PORT_HTTP}>
  DocumentRoot /var/www/html
$(if [ "${HTTPD_REDIRECT_HTTP_TO_HTTPS}" = "true" ]; then
echo "  <IfModule mod_rewrite.c>
    RewriteEngine on
    RewriteCond %{REQUEST_URI} !\.well-known/acme-challenge
    RewriteCond %{HTTPS} off
    #RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
    RewriteRule .? https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
  </IfModule>"
fi)
  <Directory /var/www/html>
    Options Includes FollowSymLinks MultiViews
    AllowOverride All
$(print_AllowFrom)
  </Directory>
</VirtualHost>

$(if [ ! -z "${APP_FQDN}" ]; then
echo "# HTTP virtualhost
<VirtualHost *:${APP_PORT_HTTP}>
  ServerName ${APP_FQDN}
$(if [ "${HTTPD_REDIRECT_HTTP_TO_HTTPS}" = "true" ]; then
echo "# enable http to https automatic rewrite
<IfModule mod_rewrite.c>
  RewriteEngine on
  RewriteCond %{REQUEST_URI} !\.well-known/acme-challenge
  RewriteCond %{HTTPS} off
  #RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
  RewriteRule .? https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</IfModule>"
fi)
  <Directory /var/www/html>
    Options Includes FollowSymLinks MultiViews
    DirectoryIndex index.php
    AllowOverride All
$(print_AllowFrom)
  </Directory>
</VirtualHost>"
fi)

$(if [ "${HTTPD_HTTPS_ENABLED}" = "true" ]; then
echo "SSLPassPhraseDialog    builtin
SSLSessionCache        shmcb:/run/apache2/sslcache(512000)
SSLSessionCacheTimeout 300
SSLCryptoDevice        builtin"
fi)

$(if [[ "${HTTPD_HTTPS_ENABLED}" = "true" && "${LETSENCRYPT_ENABLED}" != "true" ]]; then
echo "# enable default ssl virtualhost with self signed certificate
<VirtualHost _default_:${APP_PORT_HTTPS}>
  ErrorLog                 ${appDataDirs[HTTPDLOGDIR]}/ssl_error.log
  TransferLog              ${appDataDirs[HTTPDLOGDIR]}/ssl_access.log
  LogLevel                 warn
  SSLProtocol              all -SSLv3 -TLSv1 -TLSv1.1
  SSLCipherSuite           ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
  SSLHonorCipherOrder      off
  SSLSessionTickets        off
  SSLCertificateFile       ${appDataDirs[SSLCRTDIR]}/rrtpbx.crt
  SSLCertificateKeyFile    ${appDataDirs[SSLCRTDIR]}/rrtpbx.key
  #SSLCertificateChainFile ${appDataDirs[SSLCRTDIR]}/chain.crt

  <Directory /var/www/html>
    Options Includes FollowSymLinks MultiViews
    AllowOverride All
$(print_AllowFrom)
  </Directory>
</VirtualHost>"
fi)

$(if [[ ! -z "${APP_FQDN}" && "${LETSENCRYPT_ENABLED}" = "true" && -e "/etc/letsencrypt/live/${APP_FQDN}/cert.pem" ]]; then
echo "# HTTPS virtualhost
<VirtualHost *:${APP_PORT_HTTPS}>
  ServerName ${APP_FQDN}

  SSLProtocol              all -SSLv3 -TLSv1 -TLSv1.1
  SSLCipherSuite           ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
  SSLHonorCipherOrder      off
  SSLSessionTickets        off
  SSLCertificateChainFile /etc/letsencrypt/live/${APP_FQDN}/chain.pem
  SSLCertificateFile      /etc/letsencrypt/live/${APP_FQDN}/cert.pem
  SSLCertificateKeyFile   /etc/letsencrypt/live/${APP_FQDN}/privkey.pem

  <Directory /var/www/html>
    Options Includes FollowSymLinks MultiViews
    AllowOverride All
$(print_AllowFrom)
  </Directory>
</VirtualHost>"
fi)

" > "${HTTPD_CONF_DIR}/conf-enabled/virtual.conf"

}

cfgService_asterisk() {
  echo "=> Starting Asterisk"
}

cfgService_rrtpbx() {
  freepbx_reload() {
    echo "---> reloading FreePBX..."
    su - ${APP_USR} -s /bin/bash -c "fwconsole reload"
  }
  echo "---> verifing FreePBX configurations"
  if [ ! -z "${APP_DATA}" ]; then
    echo "---> using '${APP_DATA}' as basedir for FreePBX install"
    for k in ${!fpbxDirs[@]}; do
      v="${fpbxDirs[$k]}"
      eval fpbxDirs[$k]=${APP_DATA}$v
      [ ! -e "$v" ] && mkdir -p "$v"
      if [ "$(stat -c "%U %G" "$v" 2>/dev/null)" != "${APP_USR} ${APP_GRP}" ];then
      echo "---> fixing permissions for: $k=$v"
      chown ${APP_USR}:${APP_GRP} "$v"
      fi
    done

    for k in ${!fpbxFilesLog[@]}; do
      v="${fpbxFilesLog[$k]}"
      eval fpbxFilesLog[$k]=${APP_DATA}$v
      [ ! -e "$v" ] && touch "$v"
      if [ "$(stat -c "%U %G" "$v" 2>/dev/null)" != "${APP_USR} ${APP_GRP}" ];then
      echo "---> fixing permissions for: $k=$v"
      chown ${APP_USR}:${APP_GRP} "$v"
      fi
    done
  fi
  echo "[MySQL-asteriskcdrdb]
Description = MariaDB connection to 'asteriskcdrdb' database
driver = MySQL
server = ${MYSQL_SERVER}
database = asteriskcdrdb
Port = ${APP_PORT_MYSQL}
option = 3
Charset=utf8" > /etc/odbc.ini

  if [[ -e "${appFilesConf[FPBXCFGFILE]}" && ! -e ${APP_DATA}/.initialized ]]; then
    echo "--> INFO: found '${appFilesConf[FPBXCFGFILE]}' configuration file but missing '${APP_DATA}/.initialized'... creating it right now"
    echo "--> NOTE: if you want make an initial install, remove '${appFilesConf[FPBXCFGFILE]}' and '${APP_DATA}/.initialized' file"
    touch "${APP_DATA}/.initialized"
  fi
  if [ ! -e ${APP_DATA}/.initialized ]; then
      cfgService_freepbx_install
    else
      echo "--> INFO: FreePBX installation DETECTED! found '${APP_DATA}/.initialized' file"
      [ ! -e "${appFilesConf[FPBXCFGFILE]}" ] && echo "---> WARNING: missing configuration file: ${appFilesConf[FPBXCFGFILE]}"
      echo "---> reconfiguring '${appFilesConf[FPBXCFGFILE]}'..."
      [[ ! -z "${APP_PORT_MYSQL}" && ${APP_PORT_MYSQL} -ne 3306 ]] && export MYSQL_SERVER="${MYSQL_SERVER}:${APP_PORT_MYSQL}"
      sed "s/^\$amp_conf\['AMPDBUSER'\] =.*/\$amp_conf\['AMPDBUSER'\] = '${MYSQL_USER}';/"     -i "${appFilesConf[FPBXCFGFILE]}"
      sed "s/^\$amp_conf\['AMPDBPASS'\] =.*/\$amp_conf\['AMPDBPASS'\] = '${MYSQL_PASSWORD}';/" -i "${appFilesConf[FPBXCFGFILE]}"
      sed "s/^\$amp_conf\['AMPDBHOST'\] =.*/\$amp_conf\['AMPDBHOST'\] = '${MYSQL_SERVER}';/"   -i "${appFilesConf[FPBXCFGFILE]}"
      sed "s/^\$amp_conf\['AMPDBNAME'\] =.*/\$amp_conf\['AMPDBNAME'\] = '${MYSQL_DATABASE}';/" -i "${appFilesConf[FPBXCFGFILE]}"
  fi
  echo "---> applying workarounds for FreePBX and Asterisk..."
  [ ! -e "${fpbxDirs[ASTLOGDIR]}/full" ] && touch "${fpbxDirs[ASTLOGDIR]}/full" && chown ${APP_USR}:${APP_GRP} "${file}" "${fpbxDirs[ASTLOGDIR]}/full"
  [ ! -e "/usr/sbin/fwconsole" ] && ln -s ${fpbxDirs[AMPBIN]}/fwconsole /usr/sbin/fwconsole
  [ ! -e "/usr/sbin/amportal" ]  && ln -s ${fpbxDirs[AMPBIN]}/amportal  /usr/sbin/amportal
  echo "---> reconfiguring FreePBX Advanced Settings if needed..."
  set | grep ^"FREEPBX_" | grep -v -e ^"FREEPBX_MODULES_" -e ^"FREEPBX_VER=" | sed -e 's/^FREEPBX_//' -e 's/=/ /' | while read setting ; do
    k="$(echo $setting | awk '{print $1}')"
    v="$(echo $setting | awk '{print $2}')"
    currentVal=$(fwconsole setting $k | awk -F"[][{}]" '{print $2}')
    [ "$currentVal" = "true" ] && currentVal="1"
    [ "$currentVal" = "false" ] && currentVal="0"
    if [ "$currentVal" != "$v" ]; then
      echo "---> reconfiguring advanced setting: ${k}=${v}"
      fwconsole setting $k $v
    fi
  done

  echo "---> reconfiguring FreePBX SIP Settings if needed..."
  for k in ${!fpbxSipSettings[@]}; do
    v="${fpbxSipSettings[$k]}"
    cVal=$(echo "<?php include '/etc/freepbx.conf'; \$FreePBX = FreePBX::Create(); echo \$FreePBX->sipsettings->getConfig('${k}');?>" | php)
    if [ "$cVal" != "${v}" ];then
      echo "---> reconfiguring sip setting: ${k}=${v}"
      echo "<?php include '/etc/freepbx.conf'; \$FreePBX = FreePBX::Create(); \$FreePBX->sipsettings->setConfig('${k}',${v}); needreload();?>" | php
    fi
  done

  echo "---> FIXME: temporary workarounds for FreePBX broken modules and configs..."
  sed 's/^preload = chan_local.so/;preload = chan_local.so/' -i ${fpbxDirs[ASTETCDIR]}/modules.conf
  sed 's/^enabled =.*/enabled = yes/' -i ${fpbxDirs[ASTETCDIR]}/hep.conf
}

cfgService_freepbx_install() {
  n=1 ; t=5

  until [ $n -eq $t ]; do
  echo "=> !!! FreePBX IS NOT INITIALIZED :: NEW INSTALLATION DETECTED !!!"
  echo "--> missing '${APP_DATA}/.initialized' file... initializing FreePBX right now... try:[$n/$t]"
  cd /usr/src/freepbx
  if ! asterisk -r -x "core show version" 2>/dev/null ; then ./start_asterisk start ; fi
  myn=1 ; myt=10
  until [ $myn -eq $myt ]; do
    mysql -h ${MYSQL_SERVER} -P ${APP_PORT_MYSQL} -u root --password=${MYSQL_ROOT_PASSWORD} -B -e "SELECT 1;" >/dev/null
    RETVAL=$?
    if [ $RETVAL = 0 ]; then
        myn=$myt
      else
        let myn+=1
        echo "--> WARNING: cannot connect to MySQL database '${MYSQL_SERVER}'... waiting database to become ready... retrying in 10 seconds... try:[$myn/$myt]"
        sleep 10
    fi
  done

  mysql -h ${MYSQL_SERVER} -P ${APP_PORT_MYSQL} -u root --password=${MYSQL_ROOT_PASSWORD} -B -e "CREATE DATABASE IF NOT EXISTS asteriskcdrdb;"
  mysql -h ${MYSQL_SERVER} -P ${APP_PORT_MYSQL} -u root --password=${MYSQL_ROOT_PASSWORD} -B -e "GRANT ALL PRIVILEGES ON asteriskcdrdb.* TO 'asterisk'@'%' WITH GRANT OPTION;"
  mysql -h ${MYSQL_SERVER} -P ${APP_PORT_MYSQL} -u root --password=${MYSQL_ROOT_PASSWORD} -B -e \
    "CREATE TABLE IF NOT EXISTS asteriskcdrdb.voicemessages \
    (msgnum INT(11) NULL DEFAULT NULL, \
     dir VARCHAR(80) NOT NULL, \
     context VARCHAR(80) NULL DEFAULT NULL, \
     macrocontext VARCHAR(80) NULL DEFAULT NULL, \
     callerid VARCHAR(40) NULL DEFAULT NULL, \
     origtime VARCHAR(40) NULL DEFAULT NULL, \
     duration VARCHAR(20) NULL DEFAULT NULL, \
     flag VARCHAR(8) NULL DEFAULT NULL, \
     mailboxuser VARCHAR(80) NULL DEFAULT NULL, \
     mailboxcontext VARCHAR(80) NULL DEFAULT NULL, \
     recording LONGBLOB NULL DEFAULT NULL, \
     msg_id VARCHAR(40) NULL DEFAULT NULL) ENGINE = InnoDB;"
  mysql -h ${MYSQL_SERVER} -P ${APP_PORT_MYSQL} -u root --password=${MYSQL_ROOT_PASSWORD} -B -e \
    "CREATE TABLE IF NOT EXISTS asteriskcdrdb.cdr \
    (calldate datetime NOT NULL DEFAULT '1000-01-01 00:00:00', \
     clid varchar(80) NOT NULL DEFAULT '', \
     src varchar(80) NOT NULL DEFAULT '', \
     dst varchar(80) NOT NULL DEFAULT '', \
     dcontext varchar(80) NOT NULL DEFAULT '', \
     channel varchar(80) NOT NULL DEFAULT '', \
     dstchannel varchar(80) NOT NULL DEFAULT '', \
     lastapp varchar(80) NOT NULL DEFAULT '', \
     lastdata varchar(80) NOT NULL DEFAULT '', \
     duration int(11) NOT NULL DEFAULT 0, \
     billsec int(11) NOT NULL DEFAULT 0, \
     disposition varchar(45) NOT NULL DEFAULT '', \
     amaflags int(11) NOT NULL DEFAULT 0, \
     accountcode varchar(20) NOT NULL DEFAULT '', \
     uniqueid varchar(32) NOT NULL DEFAULT '', \
     userfield varchar(255) NOT NULL DEFAULT '', \
     did varchar(50) NOT NULL DEFAULT '', \
     recordingfile varchar(255) NOT NULL DEFAULT '', \
     cnum varchar(80) NOT NULL DEFAULT '', \
     cnam varchar(80) NOT NULL DEFAULT '', \
     outbound_cnum varchar(80) NOT NULL DEFAULT '', \
     outbound_cnam varchar(80) NOT NULL DEFAULT '', \
     dst_cnam varchar(80) NOT NULL DEFAULT '', \
     linkedid varchar(32) NOT NULL DEFAULT '', \
     peeraccount varchar(80) NOT NULL DEFAULT '', \
     sequence int(11) NOT NULL DEFAULT 0, \
     KEY calldate (calldate), \
     KEY dst (dst), \
     KEY accountcode (accountcode), \
     KEY uniqueid (uniqueid), \
     KEY did (did), \
     KEY recordingfile (recordingfile)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;"

  FPBX_OPTS+=" --webroot=${fpbxDirs[AMPWEBROOT]}"
  FPBX_OPTS+=" --astetcdir=${fpbxDirs[ASTETCDIR]}"
  FPBX_OPTS+=" --astmoddir=${fpbxDirs[ASTMODDIR]}"
  FPBX_OPTS+=" --astvarlibdir=${fpbxDirs[ASTVARLIBDIR]}"
  FPBX_OPTS+=" --astagidir=${fpbxDirs[ASTAGIDIR]}"
  FPBX_OPTS+=" --astspooldir=${fpbxDirs[ASTSPOOLDIR]}"
  FPBX_OPTS+=" --astrundir=${fpbxDirs[ASTRUNDIR]}"
  FPBX_OPTS+=" --astlogdir=${fpbxDirs[ASTLOGDIR]}"
  FPBX_OPTS+=" --ampbin=${fpbxDirs[AMPBIN]}"
  FPBX_OPTS+=" --ampsbin=${fpbxDirs[AMPSBIN]}"
  FPBX_OPTS+=" --ampcgibin=${fpbxDirs[AMPCGIBIN]}"
  FPBX_OPTS+=" --ampplayback=${fpbxDirs[AMPPLAYBACK]}"

  echo "--> installing FreePBX in '${fpbxDirs[AMPWEBROOT]}'"
  echo "---> START install FreePBX @ $(date)"
  [[ ! -z "${APP_PORT_MYSQL}" && ${APP_PORT_MYSQL} -ne 3306 ]] && export MYSQL_SERVER="${MYSQL_SERVER}:${APP_PORT_MYSQL}"
  set -x
  ./install -n --skip-install --no-ansi --dbhost=${MYSQL_SERVER} --dbuser=${MYSQL_USER} --dbpass=${MYSQL_PASSWORD} ${FPBX_OPTS}
  RETVAL=$?
  set +x
  echo "---> END install FreePBX @ $(date)"
  unset FPBX_OPTS

  if [ $RETVAL = 0 ]; then
    [ ! -e "/usr/sbin/fwconsole" ] && ln -s ${fpbxDirs[ASTVARLIBDIR]}/bin/fwconsole /usr/sbin/fwconsole
    [ ! -e "/usr/sbin/amportal" ]  && ln -s ${fpbxDirs[ASTVARLIBDIR]}/bin/amportal  /usr/sbin/amportal

    if [ ! -z "${APP_DATA}" ]; then
      for file in ${appFilesConf[@]}; do
        chown ${APP_USR}:${APP_GRP} "${file}"
      done
      echo "--> fixing directory system paths in db configuration..."
      for k in ${!fpbxDirs[@]} ${!fpbxFilesLog[@]}; do
        fwconsole setting ${k} ${fpbxDirs[$k]}
      done
    fi

    : ${FREEPBX_MODULES_CORE="
      framework
      core
      dashboard
      sipsettings
      voicemail
    "}

    : ${FREEPBX_MODULES_PRE:="
      pm2
      userman
    "}

    : ${FREEPBX_MODULES_EXTRA:="
      soundlang
      callrecording
      cdr
      conferences
      customappsreg
      featurecodeadmin
      infoservices
      logfiles
      music
      manager
      arimanager
      filestore
      recordings
      announcement
      asteriskinfo
      backup
      callforward
      callwaiting
      daynight
      calendar
      certman
      cidlookup
      contactmanager
      donotdisturb
      fax
      findmefollow
      iaxsettings
      miscapps
      miscdests
      ivr
      parking
      phonebook
      presencestate
      printextensions
      queues
      cel
      timeconditions
    "}

    : ${FREEPBX_MODULES_DISABLED="
      bulkhandler
      speeddial
      weakpasswords
      ucp
    "}
    echo "--> enabling EXTENDED FreePBX repo..."
    su - ${APP_USR} -s /bin/bash -c "fwconsole ma enablerepo extended"
    su - ${APP_USR} -s /bin/bash -c "fwconsole ma enablerepo unsupported"
    echo "--> starting cron to avoid crontab checks error..."
    cron
    echo "--> installing prerequisite FreePBX modules from local install into '${fpbxDirs[AMPWEBROOT]}/admin/modules'"
    for module in ${FREEPBX_MODULES_PRE}; do
      su - ${APP_USR} -s /bin/bash -c "echo \"---> installing module: ${module}\" && fwconsole ma install ${module}"
    done
    echo "--> fixing FreePBX permissions..."
    fwconsole chown
    echo "--> enabling pm2 module..."
    fwconsole ma enable pm2
    freepbx_reload
    echo "--> installing Extra FreePBX modules from local install into '${fpbxDirs[AMPWEBROOT]}/admin/modules'"
    for module in ${FREEPBX_MODULES_EXTRA}; do
      su - ${APP_USR} -s /bin/bash -c "echo \"---> installing module: ${module}\" && fwconsole ma install ${module}"
    done
    echo "--> fixing FreePBX permissions..."
    fwconsole chown
    freepbx_reload
    echo "--> upgrading modules..."
    fwconsole ma upgradeall
    echo "--> fixing FreePBX permissions..."
    fwconsole chown
    freepbx_reload
    echo "--> stopping cron..."
    killall -9 cron
    touch "${APP_DATA}/.initialized"
  fi

  if [ $RETVAL = 0 ]; then
      n=$t
    else
      let n+=1
      echo "--> problem detected... restarting in 10 seconds... try:[$n/$t]"
      sleep 10
  fi
  done

  if asterisk -r -x "core show version" 2>/dev/null ; then
    echo "--> stopping Asterisk"
    asterisk -r -x "core stop now"
    echo "=> Finished installing FreePBX"
  fi
}

runHooks() {
  mkdir -p /var/log/supervisor /var/log/dbconfig-common /var/log/apt /var/log/apache2 /var/log/asterisk/cdr-csv
  touch /var/log/wtmp /var/log/lastlog
  [ ! -e /sbin/nologin ] && ln -s /usr/sbin/nologin /sbin/nologin

  if [ ! -z "${APP_DATA}" ]; then
    echo "=> Persistent storage path detected... relocating and reconfiguring system data and configuration files using base: ${APP_DATA}"
    for dir in ${appDataDirs[@]}
      do
        dir="${APP_DATA}${dir}"
        if [ ! -e "${dir}" ];then
          echo "--> creating missing dir: '$dir'"
          mkdir -p "${dir}"
        fi
      done

    for dir in ${appDataDirs[@]}; do
      symlinkDir "${dir}" "${APP_DATA}${dir}"
    done

    for file in ${appFilesConf[@]}; do
      symlinkFile "${file}" "${APP_DATA}${file}"
    done
   else
    echo "=> WARNING: No Persistent storage path detected... the configurations will be lost on container restart"
  fi

  chkService POSTFIX_ENABLED
  chkService CRON_ENABLED
  chkService FAIL2BAN_ENABLED
  chkService HTTPD_ENABLED
  chkService ASTERISK_ENABLED
  chkService RRTPBX_ENABLED
  [[ ! -z "${APP_FQDN}" && "${LETSENCRYPT_ENABLED}" = "true" ]] && cfgService_letsencrypt
}

runHooks