#!/usr/bin/env perl

# Auto IRC Bot. An advanced, lightweight and powerful IRC bot.
# Copyright (C) 2010-2011 Xelhua Development Team (doc/CREDITS)
# This program is free software; rights to this code are stated in doc/LICENSE.
use strict;
use warnings;
use FindBin qw($Bin);
our $Bin = $Bin;

# Installation script.
our $VERSION = 1.00;


sub println
{
	my ($out) = @_;
	
	if (!defined $out) {
		return;
	}
	
	my ($nl);
	if ($^O =~ /dos/i or $^O =~ /win/i or $^O =~ /netware/i) {
		$nl = "\r\n";
	}
	elsif ($^O =~ /linux/i or $^O =~ /bsd/i) {
		$nl = "\n";
	}
	elsif ($^O =~ /mac/i or $^O =~ /darwin/i) {
		$nl = "\r";
	}
	else {
		$nl = "\r\n";
	}
	
	print $out.$nl;
	
	return 1;
}

sub ver
{
    my @vs = split('\.', $]);

	my %ver = ();
    $ver{ver} = $vs[0];
    $ver{sub} = substr($vs[1], 1, 2);
    $ver{rev} = substr($vs[1], 3, 3);

    return %ver;
}

sub modfind
{
	my ($mod) = @_;
	
	print "Checking for $mod..... ";
	eval('require '.$mod.'; 1;') and println "OK" or println "Not Found" and exit;
}


# Check operating system.
print "Checking operating system..... $^O - ";
my ($NEWLINE);
if ($^O =~ /dos/i) {
	print "DOS is not supported.\r\n";
}
elsif ($^O eq "MSWin32") {
	print "Microsoft Windows is not supported. Support is planned for the future.\r\n";
}
elsif ($^O eq "NetWare") {
	print "NetWare is not supported.\r\n";
}
elsif ($^O eq "linux") {
	print "OK\n";
	$NEWLINE = "\n";
}
elsif ($^O eq "os2") {
	print "IBM OS/2 is not supported.\r\n";
}
elsif ($^O =~ /mac/i or $^O =~ /darwin/i) {
	print "OK\r";
	$NEWLINE = "\r";
}
elsif ($^O eq "freebsd") {
	print "OK\n";
	$NEWLINE = "\n";
}
elsif ($^O eq "openbsd") {
	print "OK\n";
	$NEWLINE = "\n";
}
else {
	print "Unknown operating system. Contact support.\r\n";
}

# Check Perl version.
my %VER = ver();
print "Checking Perl version..... $VER{ver}.$VER{sub}.$VER{rev} - ";
if ($VER{ver} >= 5 and $VER{sub} >= 10) {
	println "OK";
}
else {
	println "Incompatible";
	exit;
}

# Check for required CPAN modules.
println "\0";
println "--- CPAN Modules ---";
modfind("Mouse");
modfind("Async");
modfind("Class::Unload");

# Create build.
println "\0";
println "Building.....";
unless (-d "$Bin/build") {
	`mkdir $Bin/build`;
}
unless (-e "$Bin/build/time") {
	`touch $Bin/build/time`;
}
unless (-e "$Bin/build/os") {
	`touch $Bin/build/os`;
}
unless (-e "$Bin/build/perl") {
	`touch $Bin/build/perl`;
}
unless (-e "$Bin/build/ver") {
	`touch $Bin/build/ver`;
}

open FTIME, ">$Bin/build/time" or println "Failed to install." and exit;
print FTIME time."\n" or println "Failed to install." and exit;
close FTIME or println "Failed to install." and exit;

open FOS, ">$Bin/build/os" or println "Failed to install." and exit;
print FOS $^O."\n" or println "Failed to install." and exit;
close FOS or println "Failed to install." and exit;

open FPERL, ">$Bin/build/perl" or println "Failed to install." and exit;
print FPERL "$]\n" or println "Failed to install." and exit;
close FPERL or println "Failed to install." and exit;

open FVER, ">$Bin/build/ver" or println "Failed to install." and exit;
print FVER "3.0.0d\n" or println "Failed to install." and exit;
close FVER or println "Failed to install." and exit;

# Success!
println "Done. Auto successfully installed.";