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<?php
namespace AutomateWoo;
use AutomateWoo\DataTypes\DataTypes;
use AutomateWoo\Workflows\VariableParsing\ExcludedParsedVariable;
use AutomateWoo\Workflows\VariableParsing\ParsedVariable;
use AutomateWoo\Workflows\VariableParsing\VariableParser;
/**
* Process variables into values. Is used on workflows and action options.
*
* @class Variable_Processor
* @since 2.0.2
*/
class Variables_Processor {
/** @var Workflow */
public $workflow;
/**
* @param Workflow $workflow
*/
public function __construct( $workflow ) {
$this->workflow = $workflow;
}
/**
* @param string $text
* @param bool $allow_html
* @return string
*/
public function process_field( $text, $allow_html = false ) {
$replacer = new Replace_Helper( $text, [ $this, 'callback_process_field' ], 'variables' );
$value = $replacer->process();
if ( ! $allow_html ) {
$value = html_entity_decode( wp_strip_all_tags( $value ) );
}
return $value;
}
/**
* Callback function to process a variable string.
*
* @param string $string
*
* @return string
*/
public function callback_process_field( $string ) {
$variable = self::parse_variable( $string );
if ( $variable instanceof ExcludedParsedVariable ) {
// Return excluded variable without processing
return "{{ $variable->variable_string }}";
}
if ( ! $variable instanceof ParsedVariable ) {
return '';
}
$parameters = $variable->parameters;
$value = $this->get_variable_value( $variable->type, $variable->field, $parameters );
$value = (string) apply_filters( 'automatewoo/variables/after_get_value', $value, $variable->type, $variable->field, $parameters, $this->workflow );
if ( $value === '' ) {
// backwards compatibility
if ( isset( $parameters['default'] ) ) {
$parameters['fallback'] = $parameters['default'];
}
// show default if set and no real value
if ( isset( $parameters['fallback'] ) ) {
$value = $parameters['fallback'];
}
}
return $value;
}
/**
* Sanitize and parse a variable string into a usable object.
*
* @param string $string
*
* @return ParsedVariable|ExcludedParsedVariable|null
*/
public static function parse_variable( $string ) {
$parser = new VariableParser();
try {
$parsed_variable = $parser->parse( $string );
} catch ( \Exception $e ) {
return null;
}
return $parsed_variable;
}
/**
* Get the value of a variable.
*
* @param string $data_type
* @param string $data_field
* @param array $parameters
*
* @return string
*/
public function get_variable_value( $data_type, $data_field, $parameters = [] ) {
// Short circuit filter for the variable value
$short_circuit = (string) apply_filters( 'automatewoo_text_variable_value', false, $data_type, $data_field );
if ( $short_circuit ) {
return $short_circuit;
}
$this->convert_legacy_variables( $data_type, $data_field, $parameters );
$variable_name = "$data_type.$data_field";
$variable = Variables::get_variable( $variable_name );
$value = '';
if ( $variable && method_exists( $variable, 'get_value' ) ) {
if ( DataTypes::is_non_stored_data_type( $data_type ) ) {
$value = $variable->get_value( $parameters, $this->workflow );
} else {
$data_item = $this->workflow->get_data_item( $variable->get_data_type() );
if ( $data_item ) {
$value = $variable->get_value( $data_item, $parameters, $this->workflow );
}
}
}
return (string) apply_filters( 'automatewoo/variables/get_variable_value', (string) $value, $this, $variable );
}
/**
* Handle legacy variable compatibility.
*
* @param string $data_type
* @param string $data_field
* @param array $parameters
*/
private function convert_legacy_variables( &$data_type, &$data_field, &$parameters ) {
if ( $data_type === 'site' ) {
$data_type = 'shop';
}
if ( $data_type === 'shop' ) {
if ( $data_field === 'products_on_sale' ) {
$data_field = 'products';
$parameters['type'] = 'sale';
}
if ( $data_field === 'products_recent' ) {
$data_field = 'products';
$parameters['type'] = 'recent';
}
if ( $data_field === 'products_featured' ) {
$data_field = 'products';
$parameters['type'] = 'featured';
}
}
}
}
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