<?php
/**
 * Generate AI Domain Data profile from WordPress settings.
 *
 * @package AIDD
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * Generates domain profile data.
 */
class AIDD_Generator {

	/**
	 * Generate the domain profile from WordPress options.
	 *
	 * @return array The domain profile array.
	 */
	public static function generate() {
		$profile = array(
			'spec'       => 'https://ai-domain-data.org/spec/v0.1',
			'name'       => self::get_name(),
			'description' => self::get_description(),
			'website'    => self::get_website(),
			'contact'    => self::get_contact(),
		);

		// Add optional fields if set.
		$logo = get_option( 'aidd_logo', '' );
		if ( ! empty( $logo ) ) {
			$profile['logo'] = esc_url_raw( $logo );
		}

		$entity_type = get_option( 'aidd_entity_type', '' );
		if ( ! empty( $entity_type ) ) {
			$profile['entity_type'] = sanitize_text_field( $entity_type );
		}

		$jsonld = get_option( 'aidd_jsonld', '' );
		if ( ! empty( $jsonld ) ) {
			$decoded = json_decode( $jsonld, true );
			if ( json_last_error() === JSON_ERROR_NONE && is_array( $decoded ) ) {
				$profile['jsonld'] = $decoded;
			}
		}

		return $profile;
	}

	/**
	 * Get the site name with fallbacks.
	 *
	 * @return string
	 */
	private static function get_name() {
		$name = get_option( 'aidd_name', '' );
		if ( empty( $name ) ) {
			$name = get_bloginfo( 'name' );
		}
		if ( empty( $name ) ) {
			$name = get_option( 'blogname', '' );
		}
		return sanitize_text_field( $name );
	}

	/**
	 * Get the site description with fallbacks.
	 *
	 * @return string
	 */
	private static function get_description() {
		$description = get_option( 'aidd_description', '' );
		if ( empty( $description ) ) {
			$description = get_bloginfo( 'description' );
		}
		if ( empty( $description ) ) {
			$description = get_option( 'blogdescription', '' );
		}
		return sanitize_text_field( $description );
	}

	/**
	 * Get the website URL with fallbacks.
	 *
	 * @return string
	 */
	private static function get_website() {
		$website = get_option( 'aidd_website', '' );
		if ( empty( $website ) ) {
			$website = home_url();
		}
		// Ensure it's a full URL.
		if ( ! preg_match( '#^https?://#', $website ) ) {
			$website = 'https://' . $website;
		}
		return esc_url_raw( $website );
	}

	/**
	 * Get the contact information with fallbacks.
	 *
	 * @return string
	 */
	private static function get_contact() {
		$contact = get_option( 'aidd_contact', '' );
		if ( empty( $contact ) ) {
			$contact = get_option( 'admin_email', '' );
		}
		return sanitize_text_field( $contact );
	}
}