<?php
namespace Workspace\UseCase;


/**
 * Contract execution options.
 * @author andre.fourie
 */
class Options
{

	/**
	 * @var array
	 */
	protected $options;
	/**
	 * @var array
	 */
	protected $optionData;


	/**
	 * Initialize options.
	 * @param array $packagedOptions
	 * @return \Workspace\UseCase\Options
	 */
	public function __construct(array $packagedOptions = array(), array $optionData = array())
	{
		$this->options = array();
		$this->optionData = array();
		if (!empty($packagedOptions))
		{
			$this->hydrate($packagedOptions);
		}
		if (!empty($optionData))
		{
			$this->setOptions($optionData);
		}
	}

	/**
	 * Boolean option, accepts 0/1, true/false, yes/no.
	 * @param string $optionName
	 * @return \Workspace\UseCase\Options
	 */
	public function optBoolean($optionName, $default = true)
	{
		$this->options[$optionName] = array(
				'type'    => 'boolean',
				'default' => $default
		);
		return $this;
	}

	/**
	 * Option allowing selection of single item from list.
	 * @param string $optionName
	 * @param array $optionList
	 * @param integer $default
	 * @return \Workspace\UseCase\Options
	 */
	public function optOneFromList($optionName, array $optionList, $default = null)
	{
		$this->options[$optionName] = array(
				'type'    => 'select-one',
				'list'    => $optionList,
				'default' => $default
		);
		return $this;
	}

	/**
	 * Option allowing selection of multiple items from list.
	 * @param string $optionName
	 * @param array $optionList
	 * @param array $defaults
	 * @return \Workspace\UseCase\Options
	 */
	public function optManyFromList($optionName, array $optionList, array $defaults = array())
	{
		$this->options[$optionName] = array(
				'type'    => 'select-many',
				'list'    => $optionList,
				'default' => $defaults
		);
		return $this;
	}

	/**
	 * Package options into an array.
	 * @return array
	 */
	public function package()
	{
		return $this->options;
	}

	/**
	 * Hydrate options from package.
	 * @param array $packagedOptions
	 * @return \Workspace\Contract\Options
	 */
	public function hydrate(array $packagedOptions)
	{
		$this->options = $packagedOptions;
		return $this;
	}

	/**
	 * Set option inputs.
	 * @param array $optionData
	 * @return \Workspace\UseCase\Options
	 */
	public function setOptions(array $optionData)
	{
		foreach ($this->options as $option => $spec)
		{
			if (!isset($optionData[$option]))
			{
				$this->optionData[$option] = $spec['default'];
				continue;
			}
			switch ($this->options[$option]['type'])
			{
				case 'boolean':
					$this->optionData[$option] = (
							1 == $optionData[$option]
							|| true === $optionData[$option]
							|| 'true' == $optionData[$option]
							|| 'yes' == $optionData[$option]
							)
						? true
						: false;
					break;
				case 'select-one':
					$this->optionData[$option] = isset($spec['list'][$optionData[$option]])
						? $optionData[$option]
						: $spec['default'];
					break;
				case 'select-many':
					if (is_array($optionData[$option]))
					{
						$this->optionData[$option] = array();
						foreach ($optionData[$option] as $opt)
						{
							isset($spec['list'][$optionData[$option]])
								&& $this->optionData[$option][$opt] = $opt;
						}
					}
					else
					{
						$this->optionData[$option] = $spec['default'];
					}
					break;
			}
		}
		return $this;
	}

	/**
	 * Retrieve filtered options.
	 * @return array
	 */
	public function getOptions()
	{
		return $this->optionData;
	}

}