#!/usr/bin/perl
#
# agi-CALLCARD_dial_in.agi      version 2.6
#
# This script is designed to allow customers the ability to dial in to a DID and
# enter in a PIN number that would look up their account and send on to a
# specified in-group if pin is valid
#
# user is prompted for their PIN number only (no pound '#' required)
# then the user is forwarded to the active vicidial agent session
#
# can be added as an AGI to a Call Menu, or as below:
# Call Menu Entry: "agi-CALLCARD_dial_in.agi,en---3---callcard_pin_enter---callcard_pin_invalid---default"
# ;agent dial-in:
#exten => 2346,1,Answer		; Answer the line
#exten => 2346,2,AGI(agi-CALLCARD_dial_in.agi,en---3---callcard_pin_enter---callcard_pin_invalid---default)
#exten => 2346,3,Hangup
#
# ; Below are the parameters needed for the script to be run properly
# ; 1. language
# ; 	- en -			English <default>
# ; 	- es -			Spanish
# ; 	- fr -			French, not fully supported
# ; 2. maximum attempts before hangup:
# ; 	- 3        <default>
# ; 3. audio file enter pin number prompt:
# ; 	- callcard_pin_enter        <default>
# ; 4. audio file invalid pin number prompt:
# ; 	- callcard_pin_invalid      <default>
# ; 5. DID pattern to use for in-group forwarding settings:
# ; 	- default      <default>
# ;	    - USE-ORIGINATING-DID - this option will look up the DID the customer dialed in on and use those settings
#
# other audio files used:
# - pin-number-accepted
# - vm-youhave
# - callcard_minutes_left
#
# Copyright (C) 2013  Matt Florell <vicidial@gmail.com>    LICENSE: AGPLv2
#
# CHANGELOG
# 100311-1135 - First build
# 130108-1812 - Changes for Asterisk 1.8 compatibility
#

&get_time_now;
  $start_epoch = $now_date_epoch;

$script = 'agi-CALLCARD_dial_in.agi';

$now_date_epoch = time();
$now_date = "$year-$mon-$mday $hour:$min:$sec";

($sec,$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) {$hour = "0$hour";}
if ($min < 10) {$min = "0$min";}
if ($sec < 10) {$sec = "0$sec";}

$US='_';


# default path to astguiclient configuration file:
$PATHconf =		'/etc/astguiclient.conf';

open(conf, "$PATHconf") || die "can't open $PATHconf: $!\n";
@conf = <conf>;
close(conf);
$i=0;
foreach(@conf)
	{
	$line = $conf[$i];
	$line =~ s/ |>|\n|\r|\t|\#.*|;.*//gi;
	if ( ($line =~ /^PATHlogs/) && ($CLIlogs < 1) )
		{$PATHlogs = $line;   $PATHlogs =~ s/.*=//gi;}
	if ( ($line =~ /^PATHsounds/) && ($CLIsounds < 1) )
		{$PATHsounds = $line;   $PATHsounds =~ s/.*=//gi;}
	if ( ($line =~ /^PATHmonitor/) && ($CLImonitor < 1) )
		{$PATHmonitor = $line;   $PATHmonitor =~ s/.*=//gi;}
	if ( ($line =~ /^VARserver_ip/) && ($CLIserver_ip < 1) )
		{$VARserver_ip = $line;   $VARserver_ip =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_server/) && ($CLIDB_server < 1) )
		{$VARDB_server = $line;   $VARDB_server =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_database/) && ($CLIDB_database < 1) )
		{$VARDB_database = $line;   $VARDB_database =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_user/) && ($CLIDB_user < 1) )
		{$VARDB_user = $line;   $VARDB_user =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_pass/) && ($CLIDB_pass < 1) )
		{$VARDB_pass = $line;   $VARDB_pass =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_port/) && ($CLIDB_port < 1) )
		{$VARDB_port = $line;   $VARDB_port =~ s/.*=//gi;}
	$i++;
	}

if (!$VARDB_port) {$VARDB_port='3306';}
if (!$AGILOGfile) {$AGILOGfile = "$PATHlogs/ivrout.$year-$mon-$mday";}

use DBI;
use Asterisk::AGI;
$AGI = new Asterisk::AGI;

$dbhA = DBI->connect("DBI:mysql:$VARDB_database:$VARDB_server:$VARDB_port", "$VARDB_user", "$VARDB_pass")
    or die "Couldn't connect to database: " . DBI->errstr;

# defaults:
$language =				'en';
$maximum_attempts =		'3';
$pin_enter_audio =		'callcard_pin_enter';
$pin_invalid_audio =	'callcard_pin_invalid';
$did_ingroup_settings =	'default';

### begin parsing run-time options ###
if (length($ARGV[0])>1)
	{
	if ($AGILOG) {$agi_string = "Perl Environment Dump:";   &agi_output;}
	$i=0;
	while ($#ARGV >= $i)
		{
		$args = "$args $ARGV[$i]";
		if ($AGILOG) {$agi_string = "$i|$ARGV[$i]";   &agi_output;}
		$i++;
		}
	
	### list of command-line array arguments:
	@ARGV_vars = split(/---/, $ARGV[0]);

	if (length($ARGV_vars[0]) > 0) {$language = 			$ARGV_vars[0];}
	if (length($ARGV_vars[1]) > 0) {$maximum_attempts = 	$ARGV_vars[1];}
	if (length($ARGV_vars[2]) > 0) {$pin_enter_audio = 		$ARGV_vars[2];}
	if (length($ARGV_vars[3]) > 0) {$pin_invalid_audio = 	$ARGV_vars[3];}
	if (length($ARGV_vars[4]) > 0) {$did_ingroup_settings = $ARGV_vars[4];}
	}
if ($language =~ /es/) 
	{
	$audio_suffix='_es';
	$AGI->exec("EXEC Set(CHANNEL(language)=$language)");
#	$AGI->exec("SetLanguage($language)");
	$AGI->stream_file('sip-silence');
	$AGI->stream_file('sip-silence');
	}
if ($language =~ /fr/) 
	{
	$audio_suffix='_fr';
	$AGI->exec("EXEC Set(CHANNEL(language)=$language)");
#	$AGI->exec("SetLanguage($language)");
	$AGI->stream_file('sip-silence');
	$AGI->stream_file('sip-silence');
	}
if ($language !~ /es|fr/) {$audio_suffix='';}


$|=1;
while(<STDIN>) 
	{
	chomp;
	last unless length($_);
	if ($V)
		{
		if (/^agi_(\w+)\:\s+(.*)$/)
			{
			$AGI{$1} = $2;
			}
		}
	if (/^agi_uniqueid\:\s+(.*)$/)		{$unique_id = $1;   $uniqueid=$unique_id}
	if (/^agi_extension\:\s+(.*)$/)		{$extension = $1;}
	if (/^agi_channel\:\s+(.*)$/)		{$channel = $1;}
	if (/^agi_callerid\:\s+(.*)$/)		{$callerid = $1;}
	if (/^agi_calleridname\:\s+(.*)$/)	{$calleridname = $1;}
	}

if ( ($callerid =~ /\".*\"/) && ( (!$calleridname) or ($calleridname =~ /unknown/) ) )
	{
	$calleridname = $callerid;
	$calleridname =~ s/\<\d\d\d\d\d\d\d\d\d\d\>//gi;
	$calleridname =~ s/\"|\" //gi;
	}

$callerid =~ s/\D|\'//gi;
$calleridname =~ s/unknown|\'//gi;
if ( (!$callerid) or ($callerid =~ /unknown/) )
	{$callerid = $calleridname;}
$phone_number=$callerid;

### Grab Server values from the database
$stmtA = "SELECT ext_context,agi_output FROM servers where server_ip = '$VARserver_ip';";
$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
$sthArows=$sthA->rows;
 $rec_count=0;
while ($sthArows > $rec_count)
	{
	@aryA = $sthA->fetchrow_array;
	$DBext_context =			"$aryA[0]";
	$DBagi_output =				"$aryA[1]";
	if ($DBext_context)				{$ext_context = $DBext_context;}
	if ($DBagi_output =~ /STDERR/)	{$AGILOG = '1';}
	if ($DBagi_output =~ /FILE/)	{$AGILOG = '2';}
	if ($DBagi_output =~ /BOTH/)	{$AGILOG = '3';}
	 $rec_count++;
	}
$sthA->finish();



$AGI->stream_file('sip-silence');
$AGI->stream_file('sip-silence');
$AGI->stream_file('sip-silence');


$entry_chances=0;
$VALID_login=0;
$ACTIVE_login=0;
$VDADremDIALstr='';
while ( ($entry_chances < $maximum_attempts) && ($VALID_login < 1) ) 
	{
	$entry_chances++;


	&user_password_gather;


	###### Check userID and password against vicidial_users table
	$stmtA = "SELECT count(*) FROM callcard_accounts where pin='$PIN_number' and status IN('ACTIVE','USED') and balance_minutes > 0;";
	$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
	$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
	$sthArows=$sthA->rows;
	if ($sthArows > 0)
		{
		@aryA = $sthA->fetchrow_array;
		$VALID_login = $aryA[0];
		}
	$sthA->finish();
	if ($AGILOG) {$agi_string = "validate PIN: |$VALID_login|$stmtA|";   &agi_output;}


	if ($VALID_login > 0) 
		{
		$AGI->stream_file("pin-number-accepted$audio_suffix");
		}
	else
		{
		$AGI->stream_file("$pin_invalid_audio$audio_suffix");
		}
	}



if ($VALID_login < 1) 
	{
	if ($AGILOG) {$agi_string = "DIAL-IN END: Invalid Pin   |$VALID_login|$PIN_number|";   &agi_output;}

	$AGI->stream_file("vm-goodbye$audio_suffix");

	$AGI->hangup();

	$dbhA->disconnect();
	exit;
	}
else
	{
	$secX = time();
	$PDtarget = ($secX - 30);
	($Psec,$Pmin,$Phour,$Pmday,$Pmon,$Pyear,$Pwday,$Pyday,$Pisdst) = localtime($PDtarget);
	$Pyear = ($Pyear + 1900);
	$Pmon++;
	if ($Pmon < 10) {$Pmon = "0$Pmon";}
	if ($Pmday < 10) {$Pmday = "0$Pmday";}
	if ($Phour < 10) {$Phour = "0$Phour";}
	if ($Pmin < 10) {$Pmin = "0$Pmin";}
	if ($Psec < 10) {$Psec = "0$Psec";}
		$PDtsSQLdate = "$Pyear$Pmon$Pmday$Phour$Pmin$Psec";


	###### Check for the current minute balance to play back to the customer in the callcard_accounts table
	$stmtA = "SELECT card_id,balance_minutes,inbound_group_id FROM callcard_accounts where pin='$PIN_number';";
	$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
	$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
	$sthArows=$sthA->rows;
	if ($sthArows > 0)
		{
		@aryA = $sthA->fetchrow_array;
		$card_id =				$aryA[0];
		$balance_minutes =		$aryA[1];
		$inbound_group_id =		$aryA[2];
		}
	$sthA->finish();

	###### Check for the current minute balance to play back to the customer in the callcard_accounts table
	$stmtA = "SELECT vdl.did_id,did_pattern FROM vicidial_did_log vdl, vicidial_inbound_dids vid where uniqueid='$uniqueid' and vdl.did_id=vid.did_id order by call_date desc limit 1;";
	$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
	$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
	$sthArows=$sthA->rows;
	if ($sthArows > 0)
		{
		@aryA = $sthA->fetchrow_array;
		$original_did_pattern =	$aryA[1];
		}
	$sthA->finish();

	if ($did_ingroup_settings =~ /USE-ORIGINATING-DID/)
		{$did_id_search = $original_did_pattern;}
	else
		{$did_id_search = $did_ingroup_settings;}
	$did_id=0;
	###### find the in-group settings to use when forwarding this call
	$stmtA = "SELECT did_id FROM vicidial_inbound_dids where did_pattern='$did_id_search';";
	$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
	$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
	$sthArows=$sthA->rows;
	if ($sthArows > 0)
		{
		@aryA = $sthA->fetchrow_array;
		$did_id =			$aryA[0];
		}
	$sthA->finish();

	##### play customer's balance to them before transferring
	$AGI->stream_file("vm-youhave$audio_suffix");
	$AGI->say_number("$balance_minutes");
	$AGI->stream_file("callcard_minutes_left$audio_suffix");


	##### update callcard_accounts_detail record for this account
	$stmtA = "UPDATE callcard_accounts_detail set used_time='$now_date' where card_id='$card_id';";
	$affected_rows = $dbhA->do($stmtA);
	if ($AGILOG) {$agi_string = "callcard_accounts_detail update: |$affected_rows|$now_date|$card_id|";   &agi_output;}

	##### insert callcard_log record for this call
	$stmtA = "INSERT INTO callcard_log set uniqueid='$uniqueid',card_id='$card_id',call_time='$now_date',phone_number='$phone_number',inbound_did='$original_did_pattern',balance_minutes_start='$balance_minutes';";
	$affected_rows = $dbhA->do($stmtA);
	if ($AGILOG) {$agi_string = "callcard_log INSERT: |$affected_rows|$stmtA|";   &agi_output;}


	### format the remote server dialstring to get the call to the overflow agent meetme room
	$forward_extension = "99909*$did_id*$inbound_group_id";

	if ($AGILOG) {$agi_string = "Customer $PIN_number sent to $forward_extension";   &agi_output;}

	print "SET CONTEXT $ext_context\n";
		$result = <STDIN>;
		checkresult($result);
	print "SET EXTENSION $forward_extension\n";
		$result = <STDIN>;
		checkresult($result);
	print "SET PRIORITY 1\n";
		$result = <STDIN>;
		checkresult($result);
	}



$dbhA->disconnect();

exit;





################################################################################
##### SUBROUTINES ##############################################################
################################################################################


##### BEGIN collect the pin number ######################################
sub user_password_gather
	{
	################################################################################
	# please enter the pin number followed by the pound key

	$interrupt_digit='';

	$interrupt_digit = $AGI->stream_file("$pin_enter_audio$audio_suffix",'0123456789');   

		print STDERR "interrupt_digit |$interrupt_digit|\n";

	$digits_being_entered=1;
	$PIN_number='';
	if ($interrupt_digit > 0)
		{
	#	if ($interrupt_digit == 35) {$interrupt_digit='#';}
	#	if ($interrupt_digit == 42) {$interrupt_digit='*';}
		if ($interrupt_digit == 48) {$interrupt_digit=0;}
		if ($interrupt_digit == 49) {$interrupt_digit=1;}
		if ($interrupt_digit == 50) {$interrupt_digit=2;}
		if ($interrupt_digit == 51) {$interrupt_digit=3;}
		if ($interrupt_digit == 52) {$interrupt_digit=4;}
		if ($interrupt_digit == 53) {$interrupt_digit=5;}
		if ($interrupt_digit == 54) {$interrupt_digit=6;}
		if ($interrupt_digit == 55) {$interrupt_digit=7;}
		if ($interrupt_digit == 56) {$interrupt_digit=8;}
		if ($interrupt_digit == 57) {$interrupt_digit=9;}
		
		$PIN_number=$interrupt_digit;
		}

	$digit_loop_counter=0;
	while ( ($digits_being_entered > 0) && ($digit_loop_counter < 8) )
		{
		$digit = chr($AGI->wait_for_digit('10000'));  # wait 10 seconds for input, until the pound key is pressed or 8 digits
		if ($digit =~ /\d/)
			{
			$PIN_number = "$PIN_number$digit";
			print STDERR "digit |$digit|     PIN_number |$PIN_number|\n";
	#		$AGI->say_digits("$digit");
			undef $digit;
			}
		else
			{
			$digits_being_entered=0;
			}
		
		$digit_loop_counter++;
		}

	$PIN_number =~ s/\D//gi;
	if ($PIN_number) {print STDERR "digit collection done|$digit|     PIN_number |$PIN_number|\n";}
	}
	##### END collect the pin number ###############################################





sub get_time_now	#get the current date and time and epoch for logging call lengths and datetimes
	{
	($sec,$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) {$hour = "0$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";
	$filedate = "$year$mon$mday$hour$min$sec";
	}



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 agi_output
	{
	if ($AGILOG >=2)
		{
		### open the log file for writing ###
		open(Lout, ">>$AGILOGfile")
				|| die "Can't open $AGILOGfile: $!\n";
		print Lout "$now_date|$script|$agi_string\n";
		close(Lout);
		}
		### send to STDERR writing ###
	if ( ($AGILOG == '1') || ($AGILOG == '3') )
		{print STDERR "$now_date|$script|$agi_string\n";}
	$agi_string='';
	}

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