<?php
/**
 * Automated Compliance & FTC Disclosure Handler.
 *
 * @package AffiStyle
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class AffiStyle_Compliance
 *
 * Manages link rel tags, target attributes, and FTC affiliate micro-disclosures.
 */
class AffiStyle_Compliance {


	/**
	 * Constructor. Registers compliance hooks.
	 */
	public function __construct() {
		add_action( 'affistyle_box_footer', array( __CLASS__, 'render_ftc_disclosure' ), 10, 1 );
	}

	/**
	 * Retrieve Link Rel Attributes (e.g. 'nofollow sponsored noopener').
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function get_rel_attributes( $box_id = 0 ) {
		$box_id      = absint( $box_id );
		$default_rel = 'nofollow sponsored noopener';

		if ( $box_id > 0 ) {
			$meta_nofollow  = get_post_meta( $box_id, '_affistyle_nofollow', true );
			$meta_sponsored = get_post_meta( $box_id, '_affistyle_sponsored', true );

			$rel_parts = array();
			if ( '' === $meta_nofollow || '1' === (string) $meta_nofollow ) {
				$rel_parts[] = 'nofollow';
			}
			if ( '' === $meta_sponsored || '1' === (string) $meta_sponsored ) {
				$rel_parts[] = 'sponsored';
			}
			$rel_parts[] = 'noopener';
			$default_rel = implode( ' ', $rel_parts );
		}

		$rel = apply_filters( 'affistyle_link_rel_tags', $default_rel, $box_id );

		return sanitize_text_field( trim( (string) $rel ) );
	}

	/**
	 * Retrieve Link Target Attribute (e.g. '_blank' or '_self').
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function get_link_target( $box_id = 0 ) {
		$box_id         = absint( $box_id );
		$default_target = '_blank';

		if ( $box_id > 0 ) {
			$meta_new_tab = get_post_meta( $box_id, '_affistyle_new_tab', true );
			if ( '0' === (string) $meta_new_tab ) {
				$default_target = '_self';
			}
		}

		$target = apply_filters( 'affistyle_link_target', $default_target, $box_id );

		$allowed_targets = array( '_blank', '_self', '_parent', '_top' );
		if ( ! in_array( $target, $allowed_targets, true ) ) {
			$target = '_blank';
		}

		return $target;
	}

	/**
	 * Retrieve Formatted Link Attributes String.
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function get_link_attributes_string( $box_id = 0 ) {
		$box_id = absint( $box_id );
		$target = self::get_link_target( $box_id );
		$rel    = self::get_rel_attributes( $box_id );
		$attr   = sprintf( 'target="%s" rel="%s"', esc_attr( $target ), esc_attr( $rel ) );

		return apply_filters( 'affistyle_link_attributes_string', $attr, $box_id );
	}

	/**
	 * Get Default FTC Disclosure Text.
	 *
	 * @return string
	 */
	public static function get_default_disclosure_text() {
		return __( 'We may earn an affiliate commission at no extra cost to you when you purchase through links on our site.', 'affistyle' );
	}

	/**
	 * Retrieve FTC Affiliate Disclosure Text with Filter Override.
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function get_disclosure_text( $box_id = 0 ) {
		$box_id  = absint( $box_id );
		$default = self::get_default_disclosure_text();

		if ( $box_id > 0 ) {
			$custom_disclosure = get_post_meta( $box_id, '_affistyle_disclosure_text', true );
			if ( ! empty( $custom_disclosure ) ) {
				$default = $custom_disclosure;
			}
		}

		$text = apply_filters( 'affistyle_ftc_disclosure_text', $default, $box_id );

		return sanitize_text_field( (string) $text );
	}

	/**
	 * Alias for get_disclosure_text.
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function get_ftc_disclosure( $box_id = 0 ) {
		return self::get_disclosure_text( $box_id );
	}

	/**
	 * Check if FTC Micro-Disclosure is enabled.
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return bool
	 */
	public static function is_disclosure_enabled( $box_id = 0 ) {
		$box_id  = absint( $box_id );
		$default = true;

		if ( $box_id > 0 ) {
			$meta_show = get_post_meta( $box_id, '_affistyle_show_disclosure', true );
			if ( '0' === (string) $meta_show ) {
				$default = false;
			}
		}

		$enabled = apply_filters( 'affistyle_is_ftc_enabled', $default, $box_id );

		return (bool) $enabled;
	}

	/**
	 * Alias for is_disclosure_enabled.
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return bool
	 */
	public static function is_ftc_enabled( $box_id = 0 ) {
		return self::is_disclosure_enabled( $box_id );
	}

	/**
	 * Render FTC Disclosure Component (Returns HTML String).
	 *
	 * @param int $box_id Affiliate Box ID.
	 * @return string
	 */
	public static function render_disclosure( $box_id = 0 ) {
		if ( ! self::is_disclosure_enabled( $box_id ) ) {
			return '';
		}

		$text = self::get_disclosure_text( $box_id );
		if ( empty( $text ) ) {
			return '';
		}

		return '<p class="affistyle-disclosure-text">' . esc_html( $text ) . '</p>';
	}

	/**
	 * Echo FTC Disclosure Component (Hook callback).
	 *
	 * @param int $box_id Affiliate Box ID.
	 */
	public static function render_ftc_disclosure( $box_id = 0 ) {
		$html = self::render_disclosure( $box_id );
		if ( ! empty( $html ) ) {
			echo wp_kses_post( $html );
		}
	}
}

new AffiStyle_Compliance();