<?php
namespace Craft;

/**
 * Class QuickFieldController
 * @package Craft
 */
class QuickFieldController extends BaseElementsController
{
	/**
	 * Gets the HTML, CSS and Javascript of a field setting page.
	 *
	 * @throws HttpException
	 */
	public function actionGetFieldSettings()
	{
		$this->requireAdmin();
		$this->requireAjaxRequest();

		$this->returnJson($this->_getTemplate());
	}

	/**
	 * Edits an existing field.
	 *
	 * @throws HttpException
	 */
	public function actionEditField()
	{
		$this->requireAdmin();
		$this->requirePostRequest();
		$this->requireAjaxRequest();

		$id = craft()->request->getPost('fieldId');

		$field = craft()->fields->getFieldById($id);

		if($field)
		{
			$group = craft()->fields->getGroupById($field->groupId);

			$this->returnJson(array(
				'success' => true,
				'field'   => array(
					'id'           => $field->id,
					'name'         => $field->name,
					'handle'       => $field->handle,
					'instructions' => $field->instructions,
					'translatable' => $field->translatable,
					'group'        => !$group ? array() : array(
						'id'   => $group->id,
						'name' => $group->name,
					),
				),
				'template' => $this->_getTemplate($field),
			));
		}
		else
		{
			$this->returnJson(array(
				'success' => false,
				'error'   => Craft::t('The field requested to edit no longer exists.'),
			));
		}
	}

	/**
	 * Saves a new field to the database.
	 *
	 * @throws HttpException
	 * @throws \Exception
	 */
	public function actionSaveField()
	{
		$this->requireAdmin();
		$this->requirePostRequest();
		$this->requireAjaxRequest();

		$field = new FieldModel();

		$field->id           = craft()->request->getPost('qf.fieldId');
		$field->groupId      = craft()->request->getRequiredPost('qf.group');
		$field->name         = craft()->request->getPost('qf.name');
		$field->handle       = craft()->request->getPost('qf.handle');
		$field->instructions = craft()->request->getPost('qf.instructions');
		$field->translatable = (bool) craft()->request->getPost('qf.translatable');

		$field->type = craft()->request->getRequiredPost('qf.type');

		$typeSettings = craft()->request->getPost('qf.types');

		if(isset($typeSettings[$field->type]))
		{
			$field->settings = $typeSettings[$field->type];
		}

		$group = craft()->fields->getGroupById($field->groupId);
		$success = $group && craft()->fields->saveField($field);

		$this->returnJson(array(
			'success' => $success,
			'errors'  => $field->getAllErrors(),
			'field'   => array(
				'id'           => $field->id,
				'name'         => $field->name,
				'handle'       => $field->handle,
				'instructions' => $field->instructions,
				'translatable' => $field->translatable,
				'group'        => !$group ? array() : array(
					'id'   => $group->id,
					'name' => $group->name,
				),
			),
			'template' => $success ? false : $this->_getTemplate($field),
		));
	}

	/**
	 * Deletes a field from the database.
	 *
	 * @throws HttpException
	 */
	public function actionDeleteField()
	{
		$this->requireAdmin();
		$this->requirePostRequest();
		$this->requireAjaxRequest();

		$id = craft()->request->getPost('fieldId');

		$field = craft()->fields->getFieldById($id);

		if($field)
		{
			$group = craft()->fields->getGroupById($field->groupId);
			$returnField = array(
				'id'           => $field->id,
				'name'         => $field->name,
				'handle'       => $field->handle,
				'instructions' => $field->instructions,
				'translatable' => $field->translatable,
				'group'        => !$group ? array() : array(
					'id'   => $group->id,
					'name' => $group->name,
				),
			);

			try
			{
				craft()->fields->deleteField($field);

				$this->returnJson(array(
					'success' => true,
					'field'   => $returnField,
				));
			}
			catch(\Exception $e)
			{
				$this->returnJson(array(
					'success' => false,
					'field'   => $returnField,
					'error'   => $e->getMessage(),
				));
			}
		}
		else
		{
			$this->returnJson(array(
				'success' => false,
				'error'   => Craft::t('The field requested to delete no longer exists.'),
			));
		}
	}

	/**
	 * Loads the field settings template and returns all HTML, CSS and Javascript.
	 *
	 * @param FieldModel|null $field
	 * @return array
	 */
	private function _getTemplate(FieldModel $field = null)
	{
		$data = array();

		if($field)
		{
			$data['field'] = $field;

			if($field->id != null)
			{
				$data['fieldId'] = $field->id;
			}
		}

		$html = craft()->templates->render('quickfield/_fieldsettings', $data);
		$js   = craft()->templates->getFootHtml();
		$css  = craft()->templates->getHeadHtml();

		return array(
			'html' => $html,
			'js'   => $js,
			'css'  => $css
		);
	}
}