<?php
/**
 * Form class with database interaction, data, and methods.
 *
 * @package CFF.
 * @since 1.0.179
 */
require_once dirname(__FILE__).'/cpcff_revisions.inc.php';

if(!class_exists('CPCFF_FORM'))
{
	/**
	 * Class to create create, save, and read the forms data.
	 *
	 * @since  1.0.179
	 */
	class CPCFF_FORM
	{
		/**
		 * Form's id
		 * Instance property.
		 *
		 * @var integer $_id
		 */
		private $_id;

		/**
		 * Form's settings
		 * Instance property.
		 *
		 * @var array $_settings. Associative array with the form's settings.
		 */
		private $_settings;

		/**
		 * Form's fields
		 * Instance property.
		 *
		 * @var array $_fields. Associative array with the form's fields.
		 */
		private $_fields;

		/**
		 * Instance of the CPCFF_REVISIONS object to interact with the form's revisions.
		 */
		private $_revisions_obj;
		/*********************************** PUBLIC METHODS  ********************************************/

		/**
		 * Constructs a CPCFF_FORM object.
		 *
		 * @param integer $id the form's id.
		 */
		public function __construct( $id )
		{
			$this->_id = $id;
			$this->_settings = array();
			$this->_fields 	 = array();
			$this->_revisions_obj = new CPCFF_REVISIONS($this);
		} // End __construct

		/**
		 * Creates a new form with the default data, and the name passed as parameter,
		 * and returns an instance of the CPCFF_FORM class.
		 *
		 * @param string $form_name. The form's name displayed in the settings page of the plugin.
		 *
		 * @return object.
		 */
		static public function create_default( $form_name )
		{
			global $wpdb, $cpcff_default_texts_array;

			if(
				$wpdb->insert(
					$wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE,
					array(
						// Form name
						'form_name' => stripcslashes($form_name),

						// Form structure
						'form_structure' => CP_CALCULATEDFIELDSF_DEFAULT_form_structure,

						// Notification email
						'fp_from_email' => CP_CALCULATEDFIELDSF_DEFAULT_fp_from_email,
						'fp_destination_emails' => CP_CALCULATEDFIELDSF_DEFAULT_fp_destination_emails,
						'fp_subject' => CP_CALCULATEDFIELDSF_DEFAULT_fp_subject,
						'fp_inc_additional_info' => CP_CALCULATEDFIELDSF_DEFAULT_fp_inc_additional_info,
						'fp_return_page' => CP_CALCULATEDFIELDSF_DEFAULT_fp_return_page,
						'fp_message' => CP_CALCULATEDFIELDSF_DEFAULT_fp_message,

						// Notification email copy to the user
						'cu_enable_copy_to_user' => CP_CALCULATEDFIELDSF_DEFAULT_cu_enable_copy_to_user,
						'cu_user_email_field' => CP_CALCULATEDFIELDSF_DEFAULT_cu_user_email_field,
						'cu_subject' => CP_CALCULATEDFIELDSF_DEFAULT_cu_subject,
						'cu_message' => CP_CALCULATEDFIELDSF_DEFAULT_cu_message,

						// Activate validation and validation's texts
						'vs_use_validation' => CP_CALCULATEDFIELDSF_DEFAULT_vs_use_validation,
						'vs_text_is_required' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_is_required,
						'vs_text_is_email' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_is_email,
						'vs_text_datemmddyyyy' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_datemmddyyyy,
						'vs_text_dateddmmyyyy' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_dateddmmyyyy,
						'vs_text_number' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_number,
						'vs_text_digits' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_digits,
						'vs_text_max' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_max,
						'vs_text_min' => CP_CALCULATEDFIELDSF_DEFAULT_vs_text_min,
						'vs_all_texts' => serialize($cpcff_default_texts_array),

						// Paypal settings
						'enable_paypal' => CP_CALCULATEDFIELDSF_DEFAULT_ENABLE_PAYPAL,
						'paypal_email' => CP_CALCULATEDFIELDSF_DEFAULT_PAYPAL_EMAIL,
						'request_cost' => 'fieldname1',
						'paypal_product_name' => CP_CALCULATEDFIELDSF_DEFAULT_PRODUCT_NAME,
						'currency' => CP_CALCULATEDFIELDSF_DEFAULT_CURRENCY,
						'paypal_language' => CP_CALCULATEDFIELDSF_DEFAULT_PAYPAL_LANGUAGE,

						// Captcha settings
						'cv_enable_captcha' => CP_CALCULATEDFIELDSF_DEFAULT_cv_enable_captcha,
						'cv_width' => CP_CALCULATEDFIELDSF_DEFAULT_cv_width,
						'cv_height' => CP_CALCULATEDFIELDSF_DEFAULT_cv_height,
						'cv_chars' => CP_CALCULATEDFIELDSF_DEFAULT_cv_chars,
						'cv_font' => CP_CALCULATEDFIELDSF_DEFAULT_cv_font,
						'cv_min_font_size' => CP_CALCULATEDFIELDSF_DEFAULT_cv_min_font_size,
						'cv_max_font_size' => CP_CALCULATEDFIELDSF_DEFAULT_cv_max_font_size,
						'cv_noise' => CP_CALCULATEDFIELDSF_DEFAULT_cv_noise,
						'cv_noise_length' => CP_CALCULATEDFIELDSF_DEFAULT_cv_noise_length,
						'cv_background' => CP_CALCULATEDFIELDSF_DEFAULT_cv_background,
						'cv_border' => CP_CALCULATEDFIELDSF_DEFAULT_cv_border,
						'cv_text_enter_valid_captcha' => CP_CALCULATEDFIELDSF_DEFAULT_cv_text_enter_valid_captcha
					),
					array(
						'%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s'
					)
				)
			)
			{
				return new self($wpdb->insert_id);
			}
			return false;
		} // End create_default

		/**
		 * Clones the current form.
		 *
		 * @return mixed, a new instance of the CPCFF_FORM or false.
		 */
		public function clone_form()
		{
			global $wpdb;

			$row = $this->_get_settings();
			if(!empty($row))
			{
				unset($row["id"]);
				$row["form_name"] = 'Cloned: '.$row["form_name"];
				if($wpdb->insert( $wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE, $row)) return new self($wpdb->insert_id);
			}
			return false;
		} // End clone_form

		/**
		 * Returns the id of current form.
		 *
		 * @return integer
		 */
		public function get_id()
		{
			return $this->_id;
		} // end get_id

		/**
		 * Reads the corresponding attribute in the form's settings.
		 *
		 * Reads the attribute in the form's settings, and if it does not exists returns the default value.
		 * Applies the filter cpcff_get_option
		 *
		 * @param string, name of the attribute to read.
		 * @param mixes, default value of the attribute.
		 * @return mixed, it depends of the option to read.
		 */
		public function get_option( $option, $default )
		{
			// Initialize the value with the default values
			$value = $default;
			$this->_get_settings();

			if(isset($this->_settings[$option])) $value = @$this->_settings[$option];

			// If the form's structure is a JSON text decodes it.
			if(
				$option == 'form_structure'  &&
				!is_array( $value )
			)
			{
				$form_data = CPCFF_AUXILIARY::json_decode( $value, 'normal' );
				if(!is_null($form_data))
				{
					$value = $this->_settings['form_structure'] = $form_data;
				}
			}
			// Adds to the thank you page URL a random attribute to prevent the page be cached
			elseif( $option == 'fp_return_page' && !is_admin())
			{
				if(!empty($value)) $value .= (strpos($value, '?') === false ? '?' : '&').'cff_no_cache='.time();
			}
			// If the texts where not defined previously or the thank you page is empty populate them with the default values
			elseif (
				(
					$option == 'vs_all_texts' ||
					$option == 'fp_return_page'
				) &&
				empty( $value )
			)
			{
				$value = $default;
			}

			/**
			 * Filters applied before returning a form option,
			 * use three parameters: The value of option, the name of option and the form's id
			 * returns the new option's value
			 */
			$value = apply_filters( 'cpcff_get_option', $value, $option, $this->_id );

			return $value;
		} // End get_option

		/**
		 * Returns the list of fields in the forms.
		 *
		 * @return array, associative array of objects where the fields' names are the indices and fields' structures the values.
		 */
		public function get_fields()
		{
			if(!empty($this->_fields)) return $this->_fields;

			$form_structure = $this->get_option('form_structure', array());
			if(!empty($form_structure[0]))
			{
				foreach($form_structure[0] as $field)
					$this->_fields[$field->name] = $field;
			}
			return $this->_fields;
		} // End get_fields

		public function save_settings( $params )
		{
			global $wpdb, $cpcff_default_texts_array;
			$data = array(
				'form_structure' => (isset($params['form_structure'])) ? $params['form_structure'] : CP_CALCULATEDFIELDSF_DEFAULT_form_structure,

				// Notification email
				'fp_from_email' => (isset($params['fp_from_email']))? trim($params['fp_from_email']) : '',
				'fp_destination_emails' => (isset($params['fp_destination_emails'])) ? trim($params['fp_destination_emails']) : '',
				'fp_subject' => (isset($params['fp_subject'])) ? $params['fp_subject'] : '',
				'fp_inc_additional_info' => (isset($params['fp_inc_additional_info']) && $params['fp_inc_additional_info'] == 'true') ? 'true' : 'false',
				'fp_return_page' => (isset($params['fp_return_page'])) ? trim($params['fp_return_page']) : '',
				'fp_message' => (isset($params['fp_message'])) ? $params['fp_message'] : '',
				'fp_emailformat' => (isset($params['fp_emailformat']) && $params['fp_emailformat'] == 'text') ? 'text' : 'html',

				// Notification email copy to the user
				'cu_enable_copy_to_user' => (isset($params['cu_enable_copy_to_user']) && $params['cu_enable_copy_to_user'] == 'true') ? 'true' : 'false',
				'cu_user_email_field' => (!empty($params['cu_user_email_field']))? $params[ 'cu_user_email_field' ] : '',
				'cu_subject' => (isset($params['cu_subject'])) ? $params['cu_subject'] : '',
				'cu_message' => (isset($params['cu_message'])) ? $params['cu_message'] : '',
				'cu_emailformat' => (isset($params['cu_emailformat']) && $params['cu_emailformat'] == 'text') ? 'text' : 'html',

				// PayPal settings
				'enable_paypal' => (isset($params["enable_paypal"])) ? $params["enable_paypal"] : 0,
				'paypal_email' => (isset($params["paypal_email"])) ? trim($params["paypal_email"]) : '',
				'request_cost' => (isset($params["request_cost"])) ? trim($params["request_cost"]) : '',
				'paypal_product_name' => (isset($params["paypal_product_name"])) ? $params["paypal_product_name"] : '',
				'currency' => (isset($params["currency"])) ? trim($params["currency"]) : 'USD',
				'paypal_language' => (isset($params["paypal_language"])) ? trim($params["paypal_language"]) : 'EN',
				'paypal_mode' => (isset($params["paypal_mode"])) ? $params["paypal_mode"] : 'production',
				'paypal_recurrent' => (isset($params["paypal_recurrent"])) ? $params["paypal_recurrent"] : 0,
				'paypal_identify_prices' => (isset($params['paypal_identify_prices'])) ? $params['paypal_identify_prices'] : '0',
				'paypal_zero_payment' => (isset($params["paypal_zero_payment"])) ? $params["paypal_zero_payment"] : 0,

				// Texts
				'vs_use_validation' => CP_CALCULATEDFIELDSF_DEFAULT_vs_use_validation,
				'vs_text_is_required' => (isset($params['vs_text_is_required'])) ? $params['vs_text_is_required'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_is_required,
				'vs_text_is_email' => (isset($params['vs_text_is_email'])) ? $params['vs_text_is_email'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_is_email,
				'vs_text_datemmddyyyy' => (isset($params['vs_text_datemmddyyyy'])) ? $params['vs_text_datemmddyyyy'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_datemmddyyyy,
				'vs_text_dateddmmyyyy' => (isset($params['vs_text_dateddmmyyyy'])) ? $params['vs_text_dateddmmyyyy'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_dateddmmyyyy,
				'vs_text_number' => (isset($params['vs_text_number'])) ? $params['vs_text_number'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_number,
				'vs_text_digits' => (isset($params['vs_text_digits'])) ? $params['vs_text_digits'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_digits,
				'vs_text_max' => (isset($params['vs_text_max'])) ? $params['vs_text_max'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_max,
				'vs_text_min' => (isset($params['vs_text_min'])) ? $params['vs_text_min'] : CP_CALCULATEDFIELDSF_DEFAULT_vs_text_min,
				'vs_text_previousbtn' => (isset($params['vs_text_previousbtn'])) ? $params['vs_text_previousbtn'] : 'Previous',
				'vs_text_nextbtn' => (isset($params['vs_text_nextbtn'])) ? $params['vs_text_nextbtn'] : 'Next',
				'vs_all_texts' => (isset($params['vs_all_texts'])) ? serialize($params['vs_all_texts']) : serialize($cpcff_default_texts_array),

				// Captcha settings
				'cv_enable_captcha' => (isset($params['cv_enable_captcha'])) ? $params['cv_enable_captcha'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_enable_captcha,
				'cv_width' => (isset($params['cv_width'])) ? $params['cv_width'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_width,
				'cv_height' => (isset($params['cv_height'])) ? $params['cv_height'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_height,
				'cv_chars' => (isset($params['cv_chars'])) ? $params['cv_chars'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_chars,
				'cv_font' => (isset($params['cv_font'])) ? $params['cv_font'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_font,
				'cv_min_font_size' => (isset($params['cv_min_font_size'])) ? $params['cv_min_font_size'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_min_font_size,
				'cv_max_font_size' => (isset($params['cv_max_font_size'])) ? $params['cv_max_font_size'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_max_font_size,
				'cv_noise' => (isset($params['cv_noise'])) ? $params['cv_noise'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_noise,
				'cv_noise_length' => (isset($params['cv_noise_length'])) ? $params['cv_noise_length'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_noise_length,
				'cv_background' => (isset($params['cv_background'])) ? $params['cv_background'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_background,
				'cv_border' => (isset($params['cv_border'])) ? $params['cv_border'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_border,
				'cv_text_enter_valid_captcha' => (isset($params['cv_text_enter_valid_captcha'])) ? $params['cv_text_enter_valid_captcha'] : CP_CALCULATEDFIELDSF_DEFAULT_cv_text_enter_valid_captcha
			);

			$updated_rows =  $wpdb->update (
						$wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE,
						$data,
						array( 'id' => $this->_id ),
						array( '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' ),
						array( '%d' )
				);

			// Revisions
			update_option('CP_CALCULATEDFIELDSF_REVISIONS_IN_PREVIEW', isset($params['cff-revisions-in-preview']) ? true : false);

			if(
				$updated_rows !== false &&
				(
					!isset($params['preview']) ||
					get_option('CP_CALCULATEDFIELDSF_REVISIONS_IN_PREVIEW')
				)
			) $this->_revisions_obj->create_revision();
			return $updated_rows;
		} // End save_settings

		/**
		 * Gets the correspond rown in the database
		 */
		public function get_raw_data()
		{
			global $wpdb;
			$row = $wpdb->get_row($wpdb->prepare("SELECT * FROM ".$wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE." WHERE id=%d", $this->_id), ARRAY_A);
			return $row;
		} // End get_raw_data

		/**
		 * Returns an instance of the CPCFF_REVISIONS revisions object
		 */
		public function get_revisions()
		{
			return $this->_revisions_obj;
		} // End get_revisions

		/**
		 * Creates or replace the property $this->_settings with the data stored in the revisions
		 */
		public function apply_revision($revision_id)
		{
			$this->_get_settings();
			$revision_data = $this->_revisions_obj->data($revision_id);
			$this->_settings = CPCFF_AUXILIARY::array_replace_recursive($this->_settings,$revision_data);
		} // End apply_revision

		/**
		 * Updates the form's name
		 *
		 * @param string $form_name
		 *
		 * @return bool
		 */
		public function update_name($form_name)
		{
			global $wpdb;
			return $wpdb->update(
				$wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE,
				array('form_name'=>$form_name),
				array('id' => $this->_id),
				array('%s'),
				array('%d')
			);
		} // End update_name

		/**
		 * Deletes the current form.
		 *
		 * @return mixed the number of deleted columns or false.
		 */
		public function delete_form()
		{
			global $wpdb;
			$this->_revisions_obj->delete_form();
			return $wpdb->delete(
				$wpdb->prefix.CP_CALCULATEDFIELDSF_FORMS_TABLE,
				array('id' => $this->_id),
				array('%d')
			);
		}
		/*********************************** PRIVATE METHODS  ********************************************/

		/**
		 * Returns the form's settings.
		 * Checks if the settings were read previously, before reading the data from database.
		 *
		 * @since 1.0.184
		 *
		 * @return array, associative array with the database row.
		 */
		private function _get_settings()
		{
			global $wpdb;
			if(empty($this->_settings))
			{
				$row = $this->get_raw_data();
				if(!empty($row)) $this->_settings = $row;
			}
			return $this->_settings;
		} // End _get_settings
	} // End CPCFF_FORM
}