#!/usr/bin/perl

use strict;
use warnings;
use constant true => 1;

use File::Temp qw(tempfile tmpnam);
use Test::More;

my $tests = 14;

my %BUF_SIZE = (
   normal => 1024,
   short  => 10,
);
my $source = 'colorize.c';
my $warning_flags = '-Wall -Wextra -Wformat -Wswitch-default -Wuninitialized -Wunused -Wno-unused-function -Wno-unused-parameter';

my $write_to_tmpfile = sub
{
    my ($content) = @_;

    my ($fh, $tmpfile) = tempfile(UNLINK => true);
    print {$fh} $content;
    close($fh);

    return $tmpfile;
};

plan tests => $tests;

SKIP: {
    skip "$source does not exist", $tests unless -e $source;

    my $program = tmpnam();
    skip 'compiling failed (normal)', $tests unless system("gcc -DTEST -DBUF_SIZE=$BUF_SIZE{normal} $warning_flags -o $program $source") == 0;

    is(system("$program --help >/dev/null 2>&1"), 0, 'exit value for help screen');

    is(qx(echo    "hello world" | $program none/none), "hello world\n", 'line read from stdin with newline');
    is(qx(echo -n "hello world" | $program none/none), "hello world",   'line read from stdin without newline');

    my $text = do { local $/; <DATA> };

    my $infile1 = $write_to_tmpfile->($text);

    is_deeply([split /\n/, qx(cat $infile1 | $program none/none)], [split /\n/, $text], 'text read from stdin');
    is_deeply([split /\n/, qx($program none/none $infile1)],       [split /\n/, $text], 'text read from file');

    is(qx(echo -n "\e[35mhello\e[0m \e[36mworld\e[0m" | $program --clean),       'hello world', 'clean colored words');
    is(qx(echo -n "hello world" | $program Magenta | $program --clean),          'hello world', 'clean colored line');
    is_deeply([split /\n/, qx($program cyan $infile1 | $program --clean)], [split /\n/, $text], 'clean colored text');

    ok(qx(echo -n "\e[\e[33m" | $program --clean) eq "\e[", 'clean with invalid sequence');

    SKIP: {
        my $program_buf = tmpnam();
        skip 'compiling failed (short buffer)', 1 unless system("gcc -DTEST -DBUF_SIZE=$BUF_SIZE{short} $warning_flags -o $program_buf $source") == 0;

        # Check that line chunks are merged when cleaning text
        my $short_text = 'Linux dev 2.6.32-5-openvz-686 #1 SMP Sun Sep 23 11:40:07 UTC 2012 i686 GNU/Linux';
        is(qx(echo -n "$short_text" | $program_buf --clean), $short_text, "merge ${\length $short_text} bytes (BUF_SIZE=$BUF_SIZE{short})");

        unlink $program_buf;
    }

    my $repeated = join "\n", ($text) x 7;
    my $infile2  = $write_to_tmpfile->($repeated);

    is_deeply([split /\n/, qx(cat $infile2 | $program none/none)], [split /\n/, $repeated], "read ${\length $repeated} bytes (BUF_SIZE=$BUF_SIZE{normal})");

    is(qx(echo -n "hello\nworld\r\n" | $program none/none), "hello\nworld\r\n", 'stream mode');

    is(system("echo \"hello world\" | $program random --exclude-random=black >/dev/null 2>&1"), 0, 'switch exclude-random');

    SKIP: {
        skip 'valgrind not found', 1 unless system('which valgrind >/dev/null 2>&1') == 0;
        like(qx(valgrind $program none/none $infile1 2>&1 >/dev/null), qr/no leaks are possible/, 'valgrind memleaks');
    }

    print <<'EOT';
Colors
======
EOT
    foreach my $color (qw(none black red green yellow blue cyan magenta white default random)) {
        system("echo $color | $program $color");
        next if $color eq 'none';
        my $bold_color = ucfirst $color;
        system("echo $bold_color | $program $bold_color");
    }

    unlink $program;
};

__DATA__
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