#!/usr/bin/perl

use blib;
use strict;
use warnings;

use Data::Dumper;
use Clone qw(clone);

BEGIN {
  if ($] < 5.008) {
    my $reason = "This version of perl ($]) doesn't have proper utf8 support, 5.8.0 or higher is needed";
    eval qq{ use Test::More skip_all => "$reason" };
    exit;
  }
  else {
    eval q{
      use Data::Structure::Util qw(has_utf8 utf8_off utf8_on _utf8_on _utf8_off);
      use Test::Simple tests => 24;
    };
    die $@ if $@;
  }
}


ok(1,"we loaded fine...");


my $string = '';
foreach my $v ( 32 .. 126, 195 .. 255 ) {
  $string .= chr($v);
}

my $hash = {
              key1 => $string . "\n",
           };


my $hash2 = test_utf8($hash);
if ($hash2) {
  ok(1, "Got a utf8 string");
}
else {
  $hash2 = clone($hash);
  ok( utf8_on($hash), "Have encoded utf8");
}

$string = $hash->{key1};
my $string2 = $hash2->{key1};
ok( utf8_on($string) eq $string, "Got string back");
ok( utf8_on($string2) eq $string2, "Got string back");
ok( utf8_off($string) eq $string, "Got string back");
ok( utf8_off($string2) eq $string2, "Got string back");

ok( ! has_utf8($hash), "Has not utf8");
ok( has_utf8($hash2), "Has utf8");
ok( has_utf8($hash2) eq $hash2, "Has utf8");

ok( $hash2->{key1} eq $hash->{key1}, "Same string");
ok( ! compare($hash2->{key1}, $hash->{key1}), "Different encoding");
ok( utf8_off($hash2), "Have decoded utf8");
ok( ! has_utf8($hash2), "Has not utf8");
ok( $hash2->{key1} eq $hash->{key1}, "Same string");
ok( compare($hash2->{key1}, $hash->{key1}), "Same encoding");

ok( utf8_on($hash), "Have encoded utf8");
ok( $hash2->{key1} eq $hash->{key1}, "Same string");
ok( ! compare($hash2->{key1}, $hash->{key1}), "Different encoding");


sub compare {
  my $str1 = shift;
  my $str2 = shift;
  my $i = 0;
  my @chars2 = unpack 'C*', $str2;
  foreach my $char1 (unpack 'C*', $str1) {
    return if (ord($char1) != ord($chars2[$i++]));
  }
  1;
}


sub test_utf8 {
  my $hash = shift;

  eval q{ use Encode };
  if ($@) {
    warn "Encode not installed - will try XML::Simple\n";
    eval q{ use XML::Simple qw(XMLin XMLout) };
    if ($@) {
      warn "XML::Simple not installed\n";
      return;
    }
    my $xml = XMLout($hash, keyattr => [], noattr => 1, suppressempty => undef, xmldecl => '<?xml version="1.0" encoding="ISO-8859-1"?>');
    return XMLin($xml, keyattr => [], suppressempty => undef);
  }
  my $hash2 = clone($hash) or die "Could not clone";
  my $utf8 = decode("iso-8859-1", $hash->{key1});
  $hash2->{key1} = $utf8;
  $hash2;
}


use utf8;

my $wide = { hello => [ 'world ᛰ' ] };
ok( has_utf8($wide) );
ok( _utf8_off($wide), "remove utf8 flag" );
ok( ! has_utf8($wide) );

my $latin = { hello => [ 'world' ] };
ok( ! has_utf8($latin) );
ok( _utf8_on($latin), "added utf8 flag" );
ok( has_utf8($latin) );