#!/usr/bin/perl

use strict;
use warnings;

use Digest::SHA qw(hmac_sha1_hex);
use Encode;
use Text::Unidecode;

mkdir "tftp/Phones";

my $fh;

my %config;
open $fh, '<', 'config.txt' or die "Cannot read file config: $!\n";
while (<$fh>) {
	chomp;
	my ($key, $value) = split /=/, $_, 2;
	$config{$key} = $value;
}
close $fh;

my $server_ip = $config{server_ip};
my $ip_template = $server_ip;
$ip_template =~ s/\.[^.]*$//;
my $fake_second_half = $config{fake_year};

my $sipdefault_reflash = <<"EOD";
image_version: P0S3-8-12-00
phone_password: $config{telnet_pass}
encrypt_key: 00000000000000000000000000000000
telnet_level: 2
tftp_cfg_dir: ""
EOD
chomp $sipdefault_reflash;

open my $phones_fh, '<', 'phones.txt' or die "Cannot read file phones.txt: $!\n";
open my $ast_fh, '>', 'etc_asterisk/pjsip_wizard_phones.conf' or die "Cannot create file etc_asterisk/pjsip_wizard_phones.conf: $!\n";
open my $dnsmasq_fh, '>', 'etc_dnsmasq.d/phones.conf' or die "Cannot create file etc_dnsmasq.d/phones.conf: $!\n";
open my $directory_fh, '>', 'www/directory.txt' or die "Cannot create file www/directory.txt: $!\n";
open my $voicemail_fh, '>', 'etc_asterisk/voicemail_gen.conf'  or die "Cannot create file etc_asterisk/voicemail_gen.conf: $!\n";

print $ast_fh "; This is autogenerated file, do not edit it!\n";
print $dnsmasq_fh "# This is autogenerated file, do not edit it!\n";
print $directory_fh "# This is autogenerated file, do not edit it!\n";
print $voicemail_fh "; This is autogenerated file, do not edit it!\n";

while (<$phones_fh>) {
	chomp $_;
	next if $_ =~ /^(?:#|$)/;
	$_ =~ s/#.*//;
	$_ =~ s/\s*$//;

	my ($line, $mac, $alias, $name) = split /\s+/, $_, 4;
	die "Invalid line $.: $_\n" unless defined $name;

	$mac = uc $mac;
	my $name_latin1 = $name;
	Encode::from_to($name_latin1, 'UTF-8', 'ISO-8859-1', sub { unidecode(chr($_[0])) });

	$line =~ /^[2-9][0-9]$/ or die "Invalid LINE $line on line $.: $_\n";
	$alias =~ /^[A-Za-z0-9_]{1,20}$/ or die "Invalid ALIAS $alias on line $.: $_\n";
	length $name_latin1 <= 30 or die "Too long NAME $name on line $.: $_\n";

	my $parent = ($line =~ /^2[0-9]$/) ? 'org_phone' : 'participant_phone';
	my $pass = substr(hmac_sha1_hex($line, $config{hmac_key}), 0, 12);

	my $cisco_fh;
	my $ciscofile;
	if ($mac ne '-') {
		$mac =~ /^(?:[0-9A-F]{2}:){5}[0-9A-F]{2}$/ or die "Invalid MAC $mac on line $.: $_\n";
		$ciscofile = $mac;
		$ciscofile =~ s/://g;

		open $cisco_fh, '>', "tftp/Phones/SIP$ciscofile.cnf" or die "Cannot create file tftp/Phones/SIP$ciscofile.cnf: $!\n";
		print $cisco_fh <<"EOD";
# This is autogenerated file, do not edit it!
phone_label: "$fake_second_half         Klapka $line  "
phone_prompt: "Telnet phone $line"
proxy_register: 1
proxy1_address: $server_ip
proxy1_port: 5060
line1_name: $line
line1_authname: $line
line1_password: $pass
line1_displayname: "$alias"
line1_shortname: "$name_latin1"
sntp_server: $server_ip
sntp_mode: unicast
services_url: http://$server_ip/services.xml
directory_url: http://$server_ip/directory.xml
logo_url: http://$server_ip/logo.bmp
messages_uri: 131
telnet_level: 2
EOD
		close $fh;
	}

	print $ast_fh <<"EOD";
[$line]($parent)
inbound_auth/username = $line
inbound_auth/password = $pass
endpoint/mailboxes = $line
EOD
	if ($parent eq 'participant_phone') {
		print $ast_fh <<"EOD";
[emerg$line](participant_emerg)
inbound_auth/username = emerg$line
inbound_auth/password = $pass
EOD
		if ($mac ne '-') {
			print $cisco_fh <<"EOD"
proxy2_address: $server_ip
proxy2_port: 5060
line2_name: emerg$line
line2_authname: emerg$line
line2_password: $pass
line2_displayname: "Emergency $line"
line2_shortname: " "
EOD
		}

	} else {
		if ($mac ne '-') {
			print $cisco_fh <<"EOD"
dnd_control: 0
EOD
		}
	}
	if ($mac ne '-') {
		close $cisco_fh;
		open $fh, '>', "tftp_reflash/SIP$ciscofile.cnf" or die "Cannot create file tftp_reflash/SIP$ciscofile.cnf: $!\n";
		print $fh <<"EOD";
# This is autogenerated file, do not edit it!
$sipdefault_reflash
proxy_register: 0
line1_name: $line
EOD
	}
	if ($mac ne '-') {
		print $dnsmasq_fh <<"EOD";
dhcp-host=$mac,$ip_template.$line,$alias
EOD
	}
	print $directory_fh <<"EOD";
$name=$line
EOD

	print $voicemail_fh <<"EOD"
$line => 0000,$name
EOD
}

close $phones_fh;
close $ast_fh;
close $dnsmasq_fh;
close $directory_fh;
close $voicemail_fh;

open $fh, '>', 'tftp_reflash/SIPDefault.cnf' or die "Cannot create file tftp_reflash/SIPDefault.cnf: $!\n";
print $fh <<"EOD";
# This is autogenerated file, do not edit it!
$sipdefault_reflash;
EOD
close $fh;

open $fh, '>', 'tftp/RINGLIST.DAT' or die "Cannot create file tftp/RINGLIST.DAT: $!\n";
foreach (<tftp/RingTones/*.pcm>) {
	$_ =~ m{^tftp/(RingTones/(.*)\.pcm)$};
	my ($file, $name) = ($1, $2);
	$name =~ s/_/ /g;
	print $fh "$name\t$file\n";
}
close $fh;