#!/usr/bin/perl
#
# agi-VDAD_LB_transfer.agi version 0.2
#	Load Balanced - when a call comes in on this server the script looks for an agent
#	on any server on the network on the same campaign to send call to.
#
# runs when a call comes in from the VICIDIAL_auto_dialer. This script will 
# send the calls out to the reps that are logged in.
# 
# if there are no available agents, then it will check every second until an agent becomes available,
# if at the end of 20 seconds it has not found an agent it will hangup the call and mark it as dropped.
# 
# this version "LO" Load Overflow checks first with local agents then it will seek out agents on the 
# same campaign on other servers and transfer the calls to them over IAX trunks.
# the IAX user trunks are named based on the IP address of the home server:
#   The server 10.10.10.15 would have a username of 10x10x10x15 in the iax.conf on the other servers
#   Also, the home server needs to have the trunks registered, for speed and channel consistency
#
# You need to put lines similar to those below in your extensions.conf file:
# 
# ;VICIDIAL_auto_dialer transfer script:
# exten => 8365,1,AGI(call_log.agi,${EXTEN})
# exten => 8365,2,AGI(agi-VDAD_LO_transfer.agi,${EXTEN})
# 
#
# Copyright (C) 2006  Matt Florell <vicidial@gmail.com>    LICENSE: GPLv2
#
# changes:
# 51118-2102 first build based on agi-VDADtransfer.agi script
# 60119-1408 fixed calleridname issue with 1.2 tree for custom CID
#

$V = 1;		# set to 1 for verbose mode
$M = 1;		# set to 1 for 2 line messages mode

$DROP_TIME = 10;	### number of seconds to wait until you drop a waiting call

### Make sure this file is in a path or put the absolute path to it
require("/home/cron/AST_SERVER_conf.pl");	# local configuration file

use Net::MySQL;
use Time::HiRes ('gettimeofday','usleep','sleep');  # necessary to have perl sleep command of less than one second
use Asterisk::AGI;
$AGI = new Asterisk::AGI;



($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
$year = ($year + 1900);
$mon++;
if ($mon < 10) {$mon = "0$mon";}
if ($mday < 10) {$mday = "0$mday";}
if ($hour < 10) {$Fhour = "0$hour";}
if ($min < 10) {$min = "0$min";}
if ($sec < 10) {$sec = "0$sec";}

$now_date_epoch = time();
$now_date = "$year-$mon-$mday $hour:$min:$sec";
$start_time=$now_date;
	$CIDdate = "$mon$mday$hour$min$sec";
	$tsSQLdate = "$year$mon$mday$hour$min$sec";
	$SQLdate = "$year-$mon-$mday $hour:$min:$sec";
	$SQLdateBEGIN = $SQLdate;

$BDtarget = ($secX - 5);
($Bsec,$Bmin,$Bhour,$Bmday,$Bmon,$Byear,$Bwday,$Byday,$Bisdst) = localtime($BDtarget);
$Byear = ($Byear + 1900);
$Bmon++;
if ($Bmon < 10) {$Bmon = "0$Bmon";}
if ($Bmday < 10) {$Bmday = "0$Bmday";}
if ($Bhour < 10) {$Bhour = "0$Bhour";}
if ($Bmin < 10) {$Bmin = "0$Bmin";}
if ($Bsec < 10) {$Bsec = "0$Bsec";}
	$BDtsSQLdate = "$Byear$Bmon$Bmday$Bhour$Bmin$Bsec";



### begin parsing run-time options ###
if (length($ARGV[0])>1)
{
if ($V) {print STDERR "Perl Environment Dump:\n";}
	$i=0;
	while ($#ARGV >= $i)
	{
	$args = "$args $ARGV[$i]";
	if ($V) {print STDERR "$i|$ARGV[$i]|\n";}
	$i++;
	}

	if ($args =~ /--help/i)
	{
	print "allowed run time options:\n  [-q] = quiet\n  [-t] = test\n  [-debug] = verbose debug messages\n\n";
	}
	else
	{
		if ($args =~ /-V/i)
		{
		$V=1;
		}
		if ($args =~ /-debug/i)
		{
		$DG=1;
		}
		if ($args =~ /-dbAVS/i)
		{
		$DGA=1;
		}
		if ($args =~ /-q/i)
		{
		$q=1;
		$Q=1;
		}
		if ($args =~ /-t/i)
		{
		$TEST=1;
		$T=1;
		}
	}
}
else
{
if ($V) {print "no command line options set\n";}
}

$|=1;
while(<STDIN>) 
{
	chomp;
	last unless length($_);
	if ($V)
	{
		if (/^agi_(\w+)\:\s+(.*)$/)
		{
			$AGI{$1} = $2;
		}
	}

	if (/^agi_uniqueid\:\s+(.*)$/)		{$unique_id = $1; $uniqueid = $unique_id;}
	if (/^agi_priority\:\s+(.*)$/)		{$priority = $1;}
	if (/^agi_channel\:\s+(.*)$/)		{$channel = $1;}
	if (/^agi_extension\:\s+(.*)$/)		{$extension = $1;}
	if (/^agi_type\:\s+(.*)$/)		{$type = $1;}
	if (/^agi_callerid\:\s+(.*)$/)		{$callerid = $1;}
	if (/^agi_calleridname\:\s+(.*)$/)	{$calleridname = $1;}
}

if ( (length($callerid)>20) && ($callerid =~ /\"\S\S\S\S\S\S\S\S\S\S\S\S\S\S\S\S\S\S/) )
  {
   $callerid =~ s/^\"//gi;
   $callerid =~ s/\".*$//gi;
	### set the callerid to the ACQS value(calleridname)
	print "SET CALLERID $callerid\n";
	checkresult($result);
	print STDERR "callerID changed: $callerid\n";

  }
if ( (
(length($calleridname)>5) && ( (!$callerid) or ($callerid =~ /unknown|private|00000000/i) or ($callerid =~ /5551212/) )
) or ( (length($calleridname)>17) && ($calleridname =~ /\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d/) ) )
  {
   $callerid = $calleridname;
	### set the callerid to the ACQS value(calleridname)
	print "SET CALLERID $callerid\n";
	checkresult($result);
	print STDERR "callerID changed: $callerid\n";
  }


if ($V)
{

	if ($V) {print STDERR "AGI Environment Dump:\n";}
	foreach $i (sort keys %AGI) {
		if ($V) {print STDERR " -- $i = $AGI{$i}\n";}
	}
}

$VDADcampaign='';
$VDADphone='';
$VDADphone_code='';

if ($V) {print STDERR "AGI Environment Dump: |$unique_id|$channel|$extension|$type|$callerid|$calleridname|$priority|\n";}


$callerid =~ s/\"//gi;
$CIDlead_id = $callerid;
$CIDlead_id = substr($CIDlead_id, 11, 9);
$CIDlead_id = ($CIDlead_id + 0);

if ($V) {print STDERR "\nCALL RECEIVED IN FROM VDAD: $callerid  $channel $priority\n";}
if ($M) {print STDERR "+++++ VDAD START : |$unique_id|$channel|$extension|$type|$callerid|$CIDlead_id|$now_date|$AST_ver|$priority|\n";}

if ( ($channel =~ /Local/i) && ($AST_ver !~ /^1\.0\.8|^1\.0\.9/) )
{
if ($M) {print STDERR "+++++ VDAD START LOCAL CHANNEL: EXITING- $priority\n";}
if ($priority > 2) {sleep(1);}
exit;
}


if (!$DB_port) {$DB_port='3306';}

  my $dbhA = Net::MySQL->new(hostname=>"$DB_server", database=>"$DB_database", user=>"$DB_user", password=>"$DB_pass", port => "$DB_port") or 	die "Couldn't connect to database: $DB_server - $DB_database\n";

### Grab Server values from the database
$stmtA = "SELECT voicemail_dump_exten,ext_context,answer_transfer_agent,local_gmt,asterisk_version,max_vicidial_trunks FROM servers where server_ip = '$server_ip';";
$dbhA->query("$stmtA");
if ($dbhA->has_selected_record)
	{
	$iter=$dbhA->create_record_iterator;
	   while ( $record = $iter->each)
		{
		$DBvoicemail_dump_exten	= "$record->[0]";
		$DBext_context		= "$record->[1]";
		$DBanswer_transfer_agent	= "$record->[2]";
		$DBSERVER_GMT		= "$record->[3]";
		$DBasterisk_version	= "$record->[4]";
		$DBmax_vicidial_trunks	= "$record->[5]";
		if ($DBvoicemail_dump_exten)	{$voicemail_dump_exten = $DBvoicemail_dump_exten;}
		if ($DBext_context)		{$ext_context = $DBext_context;}
		if ($DBanswer_transfer_agent)	{$answer_transfer_agent = $DBanswer_transfer_agent;}
		if ($DBSERVER_GMT)		{$SERVER_GMT = $DBSERVER_GMT;}
		if ($DBasterisk_version)	{$AST_ver = $DBasterisk_version;}
		if ($DBmax_vicidial_trunks)	{$max_vicidial_trunks = $DBmax_vicidial_trunks;}
		} 
	}


$stmtA = "UPDATE vicidial_auto_calls set uniqueid='$unique_id', channel='$channel',status='LIVE' where callerid='$callerid' order by call_time desc limit 1;";
$dbhA->query("$stmtA");
my $affected_rows = $dbhA->get_affected_rows_length;
if ($M) {print STDERR "--    VDAD : |$affected_rows|update of vac table: $callerid\n|$stmtA|\n";}
if ($affected_rows > 0)
	{
	$stmtA = "SELECT campaign_id,phone_number,phone_code,lead_id,call_time FROM vicidial_auto_calls where callerid='$callerid' order by call_time desc limit 1;";
	$dbhA->query("$stmtA");
	if ($dbhA->has_selected_record)
		{
		$iter=$dbhA->create_record_iterator;
		 $rec_countCUSTDATA=0;
		   while ( $record = $iter->each)
			{
			$VDADcampaign	= "$record->[0]";
			$VDADphone	= "$record->[1]";
			$VDADphone_code	= "$record->[2]";
			$VDADlead_id	= "$record->[3]";
			$VDADcall_time	= "$record->[4]";
			} 
		}


	$stmtA = "INSERT INTO vicidial_log (uniqueid,lead_id,campaign_id,call_date,start_epoch,status,phone_code,phone_number,user,processed) values('$uniqueid','$CIDlead_id','$VDADcampaign','$SQLdate','$now_date_epoch','QUEUE','$VDADphone_code','$VDADphone','VDAD','N')";
		if($M){print STDERR "\n|$stmtA|\n";}
	$dbhA->query($stmtA);

	if ($M) {print STDERR "--    VDAD : |$VDADlead_id|$CIDlead_id|insert to vicidial_log: $uniqueid\n";}

	}

$drop_timer=0;
$drop_seconds=0;
$hold_message_counter=25;
$hold_tone_counter=0;

while ($drop_timer <= $DROP_TIME)
{
$channel_status = $AGI->channel_status("$channel");
if ($channel_status < 1)
	{
	print STDERR "CHANNEL $channel DOWN $channel_status          $DROP_TIME|$drop_timer     CHECKING AGAIN...\n";
	### sleep for 99 hundredths of a second
	usleep(1*990*1000);

	$channel_status_DC = $AGI->channel_status("$channel");

	if ($channel_status_DC < 1)
		{
		print STDERR "CHANNEL $channel DOWN $channel_status          $DROP_TIME|$drop_timer\n";
		if ($drop_timer < $DROP_TIME) {$drop_seconds = $drop_timer;}
		$drop_timer = ($drop_timer + $DROP_TIME);
		}
	}
$stmtA = "SELECT next_agent_call FROM vicidial_campaigns where campaign_id='$VDADcampaign';";
$dbhA->query("$stmtA");
if ($dbhA->has_selected_record)
	{
	$iter=$dbhA->create_record_iterator;
	 $rec_countCUSTDATA=0;
	   while ( $record = $iter->each)
		{
		$CAMP_callorder	= "$record->[0]";
		} 
	}

$agent_call_order='';
if ($CAMP_callorder =~ /overall_user_level/i) {$agent_call_order = 'order by user_level desc,last_call_finish';}
if ($CAMP_callorder =~ /oldest_call_start/i) {$agent_call_order = 'order by last_call_time';}
if ($CAMP_callorder =~ /oldest_call_finish/i) {$agent_call_order = 'order by last_call_finish';}
if ($CAMP_callorder =~ /random/i) {$agent_call_order = 'order by random_id';}

	 $rec_countWAIT=0;
$stmtA = "SELECT count(*) FROM vicidial_auto_calls where status = 'LIVE' and campaign_id = '$VDADcampaign' and call_time < \"$VDADcall_time\" and lead_id != '$VDADlead_id';";
if($M){print STDERR "\n\n|$stmtA|\n";}
$dbhA->query("$stmtA");
if ($dbhA->has_selected_record)
	{
	$iter=$dbhA->create_record_iterator;
	   while ( $record = $iter->each)
		{
		$rec_countWAIT = "$record->[0]";
		} 
	}
if ($rec_countWAIT < 1)
	{
	$stmtA = "UPDATE vicidial_live_agents set status='QUEUE',lead_id='$CIDlead_id',uniqueid='$unique_id', channel='$channel', call_server_ip='$server_ip', callerid='$callerid' where status = 'READY' and campaign_id='$VDADcampaign' and last_update_time > '$BDtsSQLdate' $agent_call_order limit 1;";
	$dbhA->query("$stmtA");
	my $affected_rows = $dbhA->get_affected_rows_length;
	if ($M) {print STDERR "--    VDAD get agent: |$affected_rows|update of vla table: $VDADcampaign|$server_ip\n|$stmtA|\n";}
	if ($affected_rows > 0)
		{
		$stmtA = "SELECT conf_exten,user,extension,server_ip FROM vicidial_live_agents where status = 'QUEUE' and campaign_id='$VDADcampaign' and callerid='$callerid' and channel='$channel' order by last_call_time limit 1;";
		if($M){print STDERR "\n\n|$stmtA|\n";}
		$dbhA->query("$stmtA");
		if ($dbhA->has_selected_record)
			{
			$iter=$dbhA->create_record_iterator;
			 $rec_countCUSTDATA=0;
			   while ( $record = $iter->each)
				{
				$VDADconf_exten	= "$record->[0]";
				$VDADuser	= "$record->[1]";
				$VDADextension	= "$record->[2]";
				$VDADserver_ip	= "$record->[3]";
				} 
			}

		$stmtA = "UPDATE vicidial_auto_calls set status='XFER' where callerid='$callerid';";
		$dbhA->query("$stmtA");
		my $affected_rows = $dbhA->get_affected_rows_length;
		if ($M) {print STDERR "--    VDAD XFER REMOTE: |$affected_rows|update of vac table: $callerid\n|$stmtA|\n";}

		$dbhA->close;

		### format the remote server dialstring to get the call to the overflow agent meetme room
		$S='*';
		$VDADremDIALstr='';
		if( ($VDADserver_ip =~ m/(\S+)\.(\S+)\.(\S+)\.(\S+)/) && ($VDADserver_ip !~ /$server_ip/) )
			{
			$a = leading_zero($1); 
			$b = leading_zero($2); 
			$c = leading_zero($3); 
			$d = leading_zero($4);
			$VDADremDIALstr = "$a$S$b$S$c$S$d$S";
			}
		$VDADremDIALstr .= "$VDADconf_exten";

		print STDERR "\nexiting the VDAD app, transferring call to $VDADremDIALstr\n";
		print "SET CONTEXT $ext_context\n";
			checkresult($result);
		print "SET EXTENSION $VDADremDIALstr\n";
			checkresult($result);
		print "SET PRIORITY 1\n";
			checkresult($result);

			($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
			$year = ($year + 1900);
			$mon++;
			if ($mon < 10) {$mon = "0$mon";}
			if ($mday < 10) {$mday = "0$mday";}
			if ($hour < 10) {$Fhour = "0$hour";}
			if ($min < 10) {$min = "0$min";}
			if ($sec < 10) {$sec = "0$sec";}

			$now_date_epoch = time();
			$now_date = "$year-$mon-$mday $hour:$min:$sec";
		print STDERR "\nXXXXXXXXXX VDAD transferred: start|stop      $start_time|$now_date\n";
		
		exit;
		}
	}
else
	{
	print STDERR "WWWWWWWW VDAD XFER REMOTE WAIT: |$rec_countWAIT|$VDADcampaign|$channel|$callerid|$uniqueid|\n";
	}


### sleep for 99 hundredths of a second
usleep(1*990*1000);

$drop_timer++;
}


if ($drop_timer >= $DROP_TIME)
{
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
$year = ($year + 1900);
$mon++;
if ($mon < 10) {$mon = "0$mon";}
if ($mday < 10) {$mday = "0$mday";}
if ($hour < 10) {$Fhour = "0$hour";}
if ($min < 10) {$min = "0$min";}
if ($sec < 10) {$sec = "0$sec";}

$now_date_epoch = time();
$now_date = "$year-$mon-$mday $hour:$min:$sec";
	$CIDdate = "$mon$mday$hour$min$sec";
	$tsSQLdate = "$year$mon$mday$hour$min$sec";
	$SQLdate = "$year-$mon-$mday $hour:$min:$sec";
	$VDADvoicemail_ext = '';

if ($drop_seconds < 1) 
	{
	$drop_seconds = $DROP_TIME;

	$stmtA = "SELECT voicemail_ext FROM vicidial_campaigns where campaign_id = '$VDADcampaign' limit 1;";
	if($M){print STDERR "\n\n|$stmtA|\n";}
	$dbhA->query("$stmtA");
	if ($dbhA->has_selected_record)
		{
		$iter=$dbhA->create_record_iterator;
		 $rec_countCUSTDATA=0;
		   while ( $record = $iter->each)
			{
			$VDADvoicemail_ext	= "$record->[0]";
			$VDADvoicemail_ext =~ s/\D//gi;
			} 
		}
	}


	### use manager middleware-app to connect the next call to the meetme room
	$VHqueryCID = "VH$CIDdate$VDADconf_exten";

	if (length($VDADvoicemail_ext)>0)
		{	### if there is a voicemailbox defined then send the dropped call there instead of dropping it
		print STDERR "\nexiting the VDAD app, transferring call to VMAIL $VDADconf_exten\n";
		print "SET CONTEXT $ext_context\n";
			checkresult($result);
		print "SET EXTENSION $voicemail_dump_exten$VDADvoicemail_ext\n";
			checkresult($result);
		print "SET PRIORITY 1\n";
			checkresult($result);
		}
	else
		{
		### insert a NEW record to the vicidial_manager table to be processed
		$stmtA = "INSERT INTO vicidial_manager values('','','$SQLdate','NEW','N','$server_ip','','Hangup','$VHqueryCID','Channel: $channel','','','','','','','','','')";
		$dbhA->query($stmtA)  or die  "Couldn't execute query:\n";
			if ($M) {print STDERR "--    VDAD call_hungup timout: |$VHqueryCID|$VDADconf_exten|$channel|insert to vicidial_manager\n";}
		}

	$stmtA = "DELETE FROM vicidial_auto_calls where callerid='$callerid' order by call_time desc limit 1;";
	$dbhA->query("$stmtA");
	my $affected_rows = $dbhA->get_affected_rows_length;
	if ($M) {print STDERR "--    VDAD vac record deleted: |$affected_rows| $VDADcampaign|$server_ip\n";}

	$stmtA = "UPDATE vicidial_log set status='DROP',end_epoch='$now_date_epoch',length_in_sec='$drop_seconds' where uniqueid = '$uniqueid';";
		if($M){print STDERR "\n\n|$stmtA|\n";}
	$dbhA->query("$stmtA");
	my $affected_rows = $dbhA->get_affected_rows_length;
	if ($M) {print STDERR "--    VDAD vicidial_log update: |$affected_rows|$uniqueid\n";}

	$stmtA = "UPDATE vicidial_list set status='DROP' where lead_id = '$CIDlead_id';";
		if($M){print STDERR "\n\n|$stmtA|\n";}
	$dbhA->query("$stmtA");
	my $affected_rows = $dbhA->get_affected_rows_length;
	if ($M) {print STDERR "--    VDAD vicidial_list update: |$affected_rows|$CIDlead_id\n";}

}



  $dbhA->close;



exit;

sub checkresult {
	my ($res) = @_;
	my $retval;
	$tests++;
	chomp $res;
	if ($res =~ /^200/) {
		$res =~ /result=(-?\d+)/;
		if (!length($1)) {
		#	print STDERR "FAIL ($res)\n";
			$fail++;
		} else {
		#	print STDERR "PASS ($1)\n";
			$pass++;
		}
	} else {
	#	print STDERR "FAIL (unexpected result '$res')\n";
		$fail++;
	}
}

sub leading_zero($) {
    $_ = $_[0];
    s/^(\d)$/0$1/;
    s/^(\d\d)$/0$1/;
    return $_;
} # End of the leading_zero() routine.