use GetOptionKit\OptionCollection;
use GetOptionKit\OptionParser;
use GetOptionKit\OptionPrinter\ConsoleOptionPrinter;

$specs = new OptionCollection;
$specs->add('f|foo:', 'option requires a value.' )
    ->isa('String');

$specs->add('b|bar+', 'option with multiple value.' )
    ->isa('Number');

$specs->add('ip+', 'Ip constraint' )
    ->isa('Ip');

$specs->add('email+', 'Email address constraint' )
    ->isa('Email');

$specs->add('z|zoo?', 'option with optional value.' )
    ->isa('Boolean');

$specs->add('file:', 'option value should be a file.' )
    ->isa('File');

$specs->add('v|verbose', 'verbose message.' );
$specs->add('d|debug', 'debug message.' );
$specs->add('long', 'long option name only.' );
$specs->add('s', 'short option name only.' );

$printer = new ConsoleOptionPrinter();
echo $printer->render($specs);

$parser = new OptionParser($specs);

echo "Enabled options: \n";
try {
    $result = $parser->parse( $argv );
    foreach ($result->keys as $key => $spec) {
        print_r($spec);
    }

    $opt = $result->keys['foo']; // return the option object.
    $str = $result->keys['foo']->value; // return the option value
    
    print_r($opt);
    var_dump($str);
    
} catch( Exception $e ) {
    echo $e->getMessage();
}

$opt->add( 'f|foo:' , 'with string type value' )
    ->isa('string');

$opt->add( 'b|bar+' , 'with number type value' )
    ->isa('number');

$opt->add( 'z|zoo?' , 'with boolean type value' )
    ->isa('boolean');

$opt->add( 'file:' , 'with file type value' )
    ->isa('file');

$opt->add( 'date:' , 'with date type value' )
    ->isa('date');

$opt->add( 'url:' , 'with url type value' )
    ->isa('url');

$opt->add( 'email:' , 'with email type value' )
    ->isa('email');

$opt->add( 'ip:' , 'with ip(v4/v6) type value' )
    ->isa('ip');

$opt->add( 'ipv4:' , 'with ipv4 type value' )
    ->isa('ipv4');

$opt->add( 'ipv6:' , 'with ipv6 type value' )
    ->isa('ipv6');

$specs->add('r|regex:', 'with custom regex type value')
      ->isa('Regex', '/^([a-z]+)$/');

$specs = new OptionCollection;
$spec_verbose = $specs->add('v|verbose');
$spec_color = $specs->add('c|color');
$spec_debug = $specs->add('d|debug');
$spec_verbose->description = 'verbose flag';

// ContinuousOptionParser
$parser = new ContinuousOptionParser( $specs );
$result = $parser->parse(explode(' ','program -v -d test -a -b -c subcommand -e -f -g subcommand2'));
$result2 = $parser->continueParse();

// subcommand stack
$subcommands = array('subcommand1','subcommand2','subcommand3');

// different command has its own options
$subcommandSpecs = array(
    'subcommand1' => $cmdspecs,
    'subcommand2' => $cmdspecs,
    'subcommand3' => $cmdspecs,
);

// for saved options
$subcommandOptions = array();

// command arguments
$arguments = array();

$argv = explode(' ','program -v -d -c subcommand1 -a -b -c subcommand2 -c subcommand3 arg1 arg2 arg3');

// parse application options first
$parser = new ContinuousOptionParser( $appspecs );
$app_options = $parser->parse( $argv );
while (! $parser->isEnd()) {
    if (@$subcommands[0] && $parser->getCurrentArgument() == $subcommands[0]) {
        $parser->advance();
        $subcommand = array_shift( $subcommands );
        $parser->setSpecs( $subcommandSpecs[$subcommand] );
        $subcommandOptions[ $subcommand ] = $parser->continueParse();
    } else {
        $arguments[] = $parser->advance();
    }
}