<?php
/**
 * Public settings helpers (API) for Aha Prev Next.
 *
 * @package AHA_Prev_Next
 * @since 0.1.0
 */

if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * Get merged settings array.
 *
 * @return array
 */
function aha_prev_next_get_settings() {
	if ( class_exists( 'AHA_Prev_Next_Settings' ) ) {
		return AHA_Prev_Next_Settings::get_instance()->get_settings();
	}
	$opt = get_option( 'aha_prev_next_settings', array() );
	return is_array( $opt ) ? $opt : array();
}

/**
 * Check if plugin is enabled.
 *
 * @return bool
 */
function aha_prev_next_is_enabled() {
	$settings = aha_prev_next_get_settings();
	return ! empty( $settings['enable'] );
}

/**
 * Return the list of post types where Prev/Next can run (free defaults).
 *
 * Extend this via the filter to allow other post types.
 *
 * @return string[]
 */
function aha_prev_next_get_allowed_post_types() {
	$post_types = get_post_types(
		array(
			'public' => true,
		),
		'names'
	);

	if ( isset( $post_types['attachment'] ) ) {
		unset( $post_types['attachment'] );
	}

	$allowed = array_values( $post_types );
	/**
	 * Filter allowed post types.
	 *
	 * @since 0.1.0
	 * @param string[] $allowed Allowed post types.
	 */
	$allowed = apply_filters( 'aha_prev_next_allowed_post_types', $allowed );
	return array_values( array_unique( array_filter( array_map( 'sanitize_key', (array) $allowed ) ) ) );
}