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<?php

/**
 * Functions used to create, edit and remove custom permalinks
 */
class Permalink_Manager_URI_Functions {

public function __construct() {

}

/**
	 * Get the custom permalink's array key for specific post or term
	 *
	 * @param int|string $element_id
	 * @param bool $is_tax
	 *
	 * @return int|string
	 */
	public static function get_single_uri_key( $element_id, $is_tax = false ) {
		// Check if the element ID is numeric
		if ( empty( $element_id ) || ! is_numeric( $element_id ) ) {
			return '';
		}

if ( $is_tax ) {
			$element_id = "tax-{$element_id}";
		}

return $element_id;
	}

/**
	 * Get the single custom permalink
	 *
	 * @param WP_Post|WP_Term|int $element
	 * @param bool $native_uri
	 * @param bool $no_fallback
	 */
	public static function get_single_uri( $element, $native_uri = false, $no_fallback = false, $is_tax = false ) {
		if ( ! empty( $element->term_id ) ) {
			$element_id = $element->term_id;
			$is_term    = true;
		} else if ( ! empty( $element->ID ) ) {
			$element_id = $element->ID;
			$is_term    = false;
		} else if ( is_numeric( $element ) ) {
			$element_id = $element;
			$is_term    = $is_tax;
		} else {
			return '';
		}

if ( $is_term ) {
			$final_uri = ( class_exists( 'Permalink_Manager_URI_Functions_Tax' ) ) ? Permalink_Manager_URI_Functions_Tax::get_term_uri( $element_id, $native_uri, $no_fallback ) : '';
		} else {
			$final_uri = Permalink_Manager_URI_Functions_Post::get_post_uri( $element_id, $native_uri, $no_fallback );
		}

return $final_uri;
	}

/**
	 * Save single custom permalink to the custom permalinks array
	 *
	 * @param int|string $element
	 * @param string $element_uri
	 * @param bool $is_tax
	 * @param bool $db_save
	 */
	public static function save_single_uri( $element, $element_uri = null, $is_tax = false, $db_save = false ) {
		global $permalink_manager_uris;

// Get the element key
		$element_key = self::get_single_uri_key( $element, $is_tax );

// Save the custom permalink if the URI is not empty
		if ( ! empty( $element_key ) && ! empty( $element_uri ) ) {
			$permalink_manager_uris[ $element_key ] = Permalink_Manager_Helper_Functions::sanitize_title( $element_uri, true );

if ( $db_save ) {
				self::save_all_uris( $permalink_manager_uris );
			}
		}
	}

/**
	 * Remove single custom permalink from the custom permalinks array
	 *
	 * @param int|string $element
	 * @param bool $is_tax
	 * @param bool $db_save
	 */
	public static function remove_single_uri( $element, $is_tax = false, $db_save = false ) {
		global $permalink_manager_uris;

// Get the element key
		$element_key = self::get_single_uri_key( $element, $is_tax );

// Check if the custom permalink is assigned to this post
		if ( ! empty( $element_key ) && isset( $permalink_manager_uris[ $element_key ] ) ) {
			unset( $permalink_manager_uris[ $element_key ] );
		}

if ( $db_save ) {
			self::save_all_uris( $permalink_manager_uris );
		}
	}

/**
	 * Save the array with custom permalinks
	 *
	 * @param array $updated_uris
	 */
	public static function save_all_uris( $updated_uris = null ) {
		if ( is_null( $updated_uris ) ) {
			global $permalink_manager_uris;
			$updated_uris = $permalink_manager_uris;
		}

if ( is_array( $updated_uris ) && ! empty( $updated_uris ) ) {
			update_option( 'permalink-manager-uris', $updated_uris );
		}
	}

}