#!/usr/bin/perl

use strict;
use warnings;
use lib qw(lib);
use constant true  => 1;
use constant false => 0;

use Colorize::Common qw(:defaults $compiler_flags %BUF_SIZE $valgrind_command $write_to_tmpfile);
use File::Temp qw(tmpnam);
use Getopt::Long qw(:config no_auto_abbrev no_ignore_case);
use Test::Harness qw(runtests);
use Test::More;

my $tests = 30;

my $valgrind_cmd = '';
{
    my ($regular, $valgrind);
    GetOptions(regular => \$regular, valgrind => \$valgrind) or exit;
    if (not $regular || $valgrind) {
        die "$0: neither --regular nor --valgrind specified, exiting\n";
    }
    elsif ($regular && $valgrind) {
        die "$0: both --regular and --valgrind specified, exiting\n";
    }
    $valgrind_cmd = "$valgrind_command " if $valgrind;
}

{
    my @test_files = glob('t/*.t');
    eval { runtests(@test_files) } or warn $@;
}

plan tests => $tests;

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

    my $binary = tmpnam();
    skip 'compiling failed', $tests unless system("$compiler $compiler_flags -o $binary $source") == 0;
    unlink $binary;

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

    is(system("$valgrind_cmd$program --help >/dev/null"),    0, 'exit value for help screen');
    is(system("$valgrind_cmd$program --version >/dev/null"), 0, 'exit value for version data');

    is(qx(printf '%s\n' "hello world" | $valgrind_cmd$program none/none), "hello world\n", 'line read from stdin with newline');
    is(qx(printf  %s    "hello world" | $valgrind_cmd$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 | $valgrind_cmd$program none/none)], [split /\n/, $text], 'text read from stdin');
    is_deeply([split /\n/, qx($valgrind_cmd$program none/none $infile1)],       [split /\n/, $text], 'text read from file');

    {
        my @fg_colors = (30..37, 39);
        my @bg_colors = (40..47, 49);

        my @bold_colors = map "1;$_", @fg_colors;

        my @values = (@fg_colors, @bg_colors, @bold_colors, 0);

        my $ok = true;
        foreach my $value (@values) {
            $ok &= qx(printf %s "\e[${value}m" | $valgrind_cmd$program --clean) eq '';
        }
        ok($ok, 'clean color sequences');
    }

    my $check_clean = sub
    {
        my ($type) = @_;

        my $switch = "--$type";

        is(qx(printf %s "\e[35mhello\e[0m \e[36mworld\e[0m" | $valgrind_cmd$program $switch),     'hello world', "$type colored words");
        is(qx(printf %s "hello world" | $program Magenta | $valgrind_cmd$program $switch),        'hello world', "$type colored line");
        is_deeply([split /\n/, qx($program cyan $infile1 | $valgrind_cmd$program $switch)], [split /\n/, $text], "$type colored text");

        {
            my @attrs = qw(bold underscore blink reverse concealed);

            my $ok = true;
            foreach my $attr (@attrs) {
                $ok &= qx(printf %s "$attr" | $program green --attr=$attr | $valgrind_cmd$program $switch) eq $attr;
            }
            ok($ok, "$type attribute");

            my $attrs = join ',', @attrs;
            is(qx(printf %s "$attrs" | $program green --attr=$attrs | $valgrind_cmd$program $switch), $attrs, "$type attributes");
        }

        ok(qx(printf %s "\e[\e[33m" | $valgrind_cmd$program $switch) eq "\e[", "$type with invalid sequence");
    };

    $check_clean->($_) foreach qw(clean clean-all);

    is(qx(printf %s "\e[4munderline\e[24m" | $valgrind_cmd$program --clean-all), 'underline', 'clean-all color sequences');

    my $check_clean_buf = sub
    {
        my ($program_buf, $type) = @_;

        my $switch = "--$type";

        # Check that line chunks are printed when cleaning text without sequences
        my $short_text = 'Linux dev 2.6.32-5-openvz-686 #1 SMP Sun Sep 23 11:40:07 UTC 2012 i686 GNU/Linux';
        is(qx(printf %s "$short_text" | $valgrind_cmd$program_buf $switch), $short_text, "print ${\length $short_text} bytes (BUF_SIZE=$BUF_SIZE{short}, $type)");
    };

    SKIP: {
        my $program_buf = tmpnam();
        skip 'compiling failed (short buffer)', 2 unless system("$compiler -DTEST -DBUF_SIZE=$BUF_SIZE{short} -o $program_buf $source") == 0;
        $check_clean_buf->($program_buf, $_) foreach qw(clean clean-all);
        unlink $program_buf;
    }

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

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

    {
        my $colored_text = qx(printf '%s\n' "foo bar baz" | $valgrind_cmd$program red);
        my $sequences = 0;
        $sequences++ while $colored_text =~ /\e\[\d+m/g;
        is($sequences, 2, 'count of sequences printed');
    }

    {
        # Check that a 'none' foreground color (with a background color present)
        # will be substituted by 'default'.
        my $colored_text = qx(printf %s "foo bar baz" | $valgrind_cmd$program none/black);
        is($colored_text, "\e[40m\e[39mfoo bar baz\e[0m", 'no color sequences printed');
    }

    is(qx(printf %s "hello\nworld\r\n" | $valgrind_cmd$program none/none), "hello\nworld\r\n", 'stream mode');

    is(system(qq(printf '%s\n' "hello world" | $valgrind_cmd$program random --exclude-random=black >/dev/null)), 0, 'switch exclude-random');

    {
        my $infile = $write_to_tmpfile->("foo\n\nbar");
        is_deeply([split /\n/, qx($valgrind_cmd$program yellow --omit-color-empty $infile)],
                  [split /\n/, "\e[33mfoo\e[0m\n\n\e[33mbar\e[0m"],
                  'switch omit-color-empty');
    }

    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');
    }

    {
        my $debug = tmpnam();
        is(system("$compiler -DDEBUG -o $debug $source"), 0, 'debugging build');
        unlink $debug if -e $debug;
    }

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

    print <<'EOT';
Attributes
==========
EOT
    foreach my $attr (qw(bold underscore blink reverse concealed)) {
        system(qq(printf '%s\n' "$attr" | $program green --attr=$attr));
    }

    unlink $program;
};

__DATA__
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