<?php

// Exit if accessed directly.
if( ! defined( 'ABSPATH' ) ) exit;

// Register store.
acf_register_store( 'location-types' );

/**
 * Registers a location type.
 *
 * @date	8/4/20
 * @since	5.9.0
 *
 * @param	string $class_name The location class name.
 * @return	(ACF_Location|false)
 */
function acf_register_location_type( $class_name ) {
	$store = acf_get_store( 'location-types' );
	
	// Check class exists.
	if( !class_exists($class_name) ) {
		$message = sprintf( __( 'Class "%s" does not exist.', 'acf' ), $class_name );
		_doing_it_wrong( __FUNCTION__, $message, '5.9.0' );
		return false;
	}
	
	// Create instance.
	$location_type = new $class_name();
	$name = $location_type->name;
	
	// Check location type is unique.
	if( $store->has( $name ) ) {
		$message = sprintf( __( 'Location type "%s" is already registered.' ), $name );
		_doing_it_wrong( __FUNCTION__, $message, '5.9.0' );
		return false;
	}
	
	// Add to store.
	$store->set( $name, $location_type );
	
	/**
	 * Fires after a location type is registered.
	 *
	 * @date	8/4/20
	 * @since	5.9.0
	 *
	 * @param	string $name The location type name.
	 * @param	ACF_Location $location_type The location type instance.
	 */
	do_action( 'acf/registered_location_type', $name, $location_type );
	
	// Return location type instance.
	return $location_type;
}

/**
 * Returns an array of all registered location types.
 *
 * @date	8/4/20
 * @since	5.9.0
 *
 * @param	void
 * @return	array
 */
function acf_get_location_types() {
	return acf_get_store( 'location-types' )->get();
}

/**
 * Returns a location type for the given name.
 *
 * @date	18/2/19
 * @since	5.7.12
 *
 * @param	string $name The location type name.
 * @return	(ACF_Location|null)
 */
function acf_get_location_type( $name ) {
	return acf_get_store( 'location-types' )->get( $name );
}

/**
 * Returns a grouped array of all location rule types.
 *
 * @date	8/4/20
 * @since	5.9.0
 *
 * @param	void
 * @return	array
 */
function acf_get_location_rule_types() {
	$types = array();
	
	// Default categories.
	$categories = array(
		'post'		=> __('Post', 'acf'),
		'page'		=> __('Page', 'acf'),
		'user'		=> __('User', 'acf'),
		'forms'		=> __('Forms', 'acf'),
	);
	
	// Loop over all location types and append to $type.
	$location_types = acf_get_location_types();
	foreach( $location_types as $location_type ) {
		
		// Ignore if not public.
		if( !$location_type->public ) {
			continue;
		}
		
		// Find category label from category name.
		$category = $location_type->category;
		if( isset($categories[ $category ]) ) {
			$category = $categories[ $category ];
		}
		
		// Append
		$types[ $category ][ $location_type->name ] = esc_html( $location_type->label );
	}
	
	/**
	 * Filters the location rule types.
	 *
	 * @date	8/4/20
	 * @since	5.9.0
	 *
	 * @param	array $types The location rule types.
	 */
	return apply_filters( 'acf/location/rule_types', $types );
}

/**
 * Returns a validated location rule with all props.
 *
 * @date	8/4/20
 * @since	5.9.0
 *
 * @param	array $rule The location rule.
 * @return	array
 */
function acf_validate_location_rule( $rule = array() ) {
	
	// Apply defaults.
	$rule = wp_parse_args($rule, array(
		'id'		=> '',
		'group'		=> '',
		'param'		=> '',
		'operator'	=> '==',
		'value'		=> '',
	));
	
	/**
	 * Filters the location rule to ensure is valid.
	 *
	 * @date	8/4/20
	 * @since	5.9.0
	 *
	 * @param	array $rule The location rule.
	 */
	$rule = apply_filters( "acf/location/validate_rule/type={$rule['param']}", $rule );
	$rule = apply_filters( "acf/location/validate_rule", $rule );
	return $rule;
}

/**
 * Returns an array of operators for a given rule.
 *
 * @date	30/5/17
 * @since	5.6.0
 *
 * @param	array $rule The location rule.
 * @return	array
 */
function acf_get_location_rule_operators( $rule ) {
	$operators = ACF_Location::get_operators( $rule );
	
	// Get operators from location type since 5.9.
	$location_type = acf_get_location_type( $rule['param'] );
	if( $location_type ) {
		$operators = $location_type->get_operators( $rule );
	}
	
	/**
	 * Filters the location rule operators.
	 *
	 * @date	30/5/17
	 * @since	5.6.0
	 *
	 * @param	array $types The location rule operators.
	 */
	$operators = apply_filters( "acf/location/rule_operators/type={$rule['param']}", $operators, $rule );
	$operators = apply_filters( "acf/location/rule_operators/{$rule['param']}", $operators, $rule );
	$operators = apply_filters( "acf/location/rule_operators", $operators, $rule );
	return $operators;
}

/**
 * Returns an array of values for a given rule.
 *
 * @date	30/5/17
 * @since	5.6.0
 *
 * @param	array $rule The location rule.
 * @return	array
 */
function acf_get_location_rule_values( $rule ) {
	$values = array();
	
	// Get values from location type since 5.9.
	$location_type = acf_get_location_type( $rule['param'] );
	if( $location_type ) {
		$values = $location_type->get_values( $rule );
	}
	
	/**
	 * Filters the location rule values.
	 *
	 * @date	30/5/17
	 * @since	5.6.0
	 *
	 * @param	array $types The location rule values.
	 */
	$values = apply_filters( "acf/location/rule_values/type={$rule['param']}", $values, $rule );
	$values = apply_filters( "acf/location/rule_values/{$rule['param']}", $values, $rule );
	$values = apply_filters( "acf/location/rule_values", $values, $rule );
	return $values;
}

/**
 * Returns true if the provided rule matches the screen args.
 *
 * @date	30/5/17
 * @since	5.6.0
 *
 * @param	array $rule The location rule.
 * @param	array $screen The screen args.
 * @param	array $field The field group array.
 * @return	bool
 */
function acf_match_location_rule( $rule, $screen, $field_group ) {
	$result = false;
	
	// Get result from location type since 5.9.
	$location_type = acf_get_location_type( $rule['param'] );
	if( $location_type ) {
		$result = $location_type->match( $rule, $screen, $field_group );
	}
	
	/**
	 * Filters the result.
	 *
	 * @date	30/5/17
	 * @since	5.6.0
	 *
	 * @param	bool $result The match result.
	 * @param	array $rule The location rule.
	 * @param	array $screen The screen args.
	 * @param	array $field_group The field group array.
	 */
	$result = apply_filters( "acf/location/match_rule/type={$rule['param']}", $result, $rule, $screen, $field_group );
	$result = apply_filters( "acf/location/match_rule", $result, $rule, $screen, $field_group );
	$result = apply_filters( "acf/location/rule_match/{$rule['param']}", $result, $rule, $screen, $field_group );
	$result = apply_filters( "acf/location/rule_match", $result, $rule, $screen, $field_group );
	return $result;
}

/**
 * Returns ann array of screen args to be used against matching rules.
 *
 * @date	8/4/20
 * @since	5.9.0
 *
 * @param	array $screen The screen args.
 * @param	array $deprecated The field group array.
 * @return	array
 */
function acf_get_location_screen( $screen = array(), $deprecated = false ) {
	
	// Apply defaults.
	$screen = wp_parse_args($screen, array(
		'lang'	=> acf_get_setting('current_language'),
		'ajax'	=> false
	));
	
	/**
	 * Filters the result.
	 *
	 * @date	30/5/17
	 * @since	5.6.0
	 *
	 * @param	array $screen The screen args.
	 * @param	array $deprecated The field group array.
	 */
	return apply_filters( 'acf/location/screen', $screen, $deprecated );
}

/**
 * Alias of acf_register_location_type().
 *
 * @date	31/5/17
 * @since	5.6.0
 *
 * @param	string $class_name The location class name.
 * @return	(ACF_Location|false)
 */
function acf_register_location_rule( $class_name ) {
	return acf_register_location_type( $class_name );
}

/**
 * Alias of acf_get_location_type().
 *
 * @date	31/5/17
 * @since	5.6.0
 *
 * @param	string $class_name The location class name.
 * @return	(ACF_Location|false)
 */
function acf_get_location_rule( $name ) {
	return acf_get_location_type( $name );
}

/**
 * Alias of acf_validate_location_rule().
 *
 * @date	30/5/17
 * @since	5.6.0
 *
 * @param	array $rule The location rule.
 * @return	array
 */
function acf_get_valid_location_rule( $rule ) {
	return acf_validate_location_rule( $rule );
}