<?php
/*****************************************************************************
 * Form.php
 * Contains key class Form.
 *
 * Kabuki CMS (C) 2013-2015, Aaron van Geffen
 *****************************************************************************/

class Form
{
	public $request_method;
	public $request_url;
	public $content_above;
	public $content_below;
	private $fields;
	private $data;
	private $missing;

	// NOTE: this class does not verify the completeness of form options.
	public function __construct($options)
	{
		$this->request_method = !empty($options['request_method']) ? $options['request_method'] : 'POST';
		$this->request_url = !empty($options['request_url']) ? $options['request_url'] : BASEURL;
		$this->fields = !empty($options['fields']) ? $options['fields'] : [];
		$this->content_below = !empty($options['content_below']) ? $options['content_below'] : null;
		$this->content_above = !empty($options['content_above']) ? $options['content_above'] : null;
	}

	public function verify($post)
	{
		$this->data = [];
		$this->missing = [];

		foreach ($this->fields as $field_id => $field)
		{
			// Field disabled?
			if (!empty($field['disabled']))
			{
				$this->data[$field_id] = '';
				continue;
			}

			// No data present at all for this field?
			if ((!isset($post[$field_id]) || $post[$field_id] == '') && empty($field['is_optional']))
			{
				$this->missing[] = $field_id;
				$this->data[$field_id] = '';
				continue;
			}

			// Verify data for all fields
			switch ($field['type'])
			{
				case 'select':
				case 'radio':
					// Skip validation? Dangerous territory!
					if (isset($field['verify_options']) && $field['verify_options'] === false)
						$this->data[$field_id] = $post[$field_id];
					// Check whether selected option is valid.
					elseif (isset($post[$field_id]) && !isset($field['options'][$post[$field_id]]))
					{
						$this->missing[] = $field_id;
						$this->data[$field_id] = '';
						continue;
					}
					else
						$this->data[$field_id] = $post[$field_id];
					break;

				case 'checkbox':
					// Just give us a 'boolean' int for this one
					$this->data[$field_id] = empty($post[$field_id]) ? 0 : 1;
					break;

				case 'color':
					// Colors are stored as a string of length 3 or 6 (hex)
					if (!isset($post[$field_id]) || (strlen($post[$field_id]) != 3 && strlen($post[$field_id]) != 6))
					{
						$this->missing[] = $field_id;
						$this->data[$field_id] = '';
						continue;
					}
					else
						$this->data[$field_id] = $post[$field_id];
					break;

				case 'file':
					// Needs to be verified elsewhere!
					break;

				case 'numeric':
					$data = isset($post[$field_id]) ? $post[$field_id] : '';
					// Do we need to check bounds?
					if (isset($field['min_value']) && is_numeric($data))
					{
						if (is_float($field['min_value']) && (float) $data < $field['min_value'])
						{
							$this->missing[] = $field_id;
							$this->data[$field_id] = 0.0;
						}
						elseif (is_int($field['min_value']) && (int) $data < $field['min_value'])
						{
							$this->missing[] = $field_id;
							$this->data[$field_id] = 0;
						}
						else
							$this->data[$field_id] = $data;
					}
					elseif (isset($field['max_value']) && is_numeric($data))
					{
						if (is_float($field['max_value']) && (float) $data > $field['max_value'])
						{
							$this->missing[] = $field_id;
							$this->data[$field_id] = 0.0;
						}
						elseif (is_int($field['max_value']) && (int) $data > $field['max_value'])
						{
							$this->missing[] = $field_id;
							$this->data[$field_id] = 0;
						}
						else
							$this->data[$field_id] = $data;
					}
					// Does it look numeric?
					elseif (is_numeric($data))
					{
						$this->data[$field_id] = $data;
					}
					// Let's consider it missing, then.
					else
					{
						$this->missing[] = $field_id;
						$this->data[$field_id] = 0;
					}
					break;

				case 'text':
				case 'textarea':
				default:
					$this->data[$field_id] = isset($post[$field_id]) ? $post[$field_id] : '';
			}
		}
	}

	public function setData($data)
	{
		$this->verify($data);
		$this->missing = [];
	}

	public function getFields()
	{
		return $this->fields;
	}

	public function getData()
	{
		return $this->data;
	}

	public function getMissing()
	{
		return $this->missing;
	}
}