<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Profile name update
 *
 * @param $user_id
 * @param $changes
 */
function um_update_profile_full_name( $user_id, $changes ) {
	// Sync display name changes
	$option = UM()->options()->get( 'display_name' );

	if ( ! isset( $user_id ) || empty( $user_id ) ) {
		$user = get_user_by( 'email', $changes['user_email'] );
		um_fetch_user( $user->ID );
		$user_id = $user->ID;
	}

	switch ( $option ) {
		default:
			break;
		case 'full_name':
			$update_name = get_user_meta( $user_id, 'first_name', true ) . ' ' . get_user_meta( $user_id, 'last_name', true );
			break;
		case 'sur_name':
			$fname = get_user_meta( $user_id, 'first_name', true );
			$lname = get_user_meta( $user_id, 'last_name', true );
			$update_name = $lname . ' ' . $fname;
			break;
		case 'initial_name':
			$fname = get_user_meta( $user_id, 'first_name', true );
			$lname = get_user_meta( $user_id, 'last_name', true );
			$update_name = $fname . ' ' . ( ! empty( $lname ) ? $lname[0] : '' );
			break;
		case 'initial_name_f':
			$fname = get_user_meta( $user_id, 'first_name', true );
			$lname = get_user_meta( $user_id, 'last_name', true );
			$update_name = ( ! empty( $fname ) ? $fname[0] : '' ) . ' ' . $lname;
			break;
		case 'nickname':
			$update_name = get_user_meta( $user_id, 'nickname', true );
			break;
		case 'default':
			$user = get_userdata( $user_id );

			if ( ! empty( $user ) && ! is_wp_error( $user ) ) {
				if ( ! empty( UM()->user()->previous_data['display_name'] ) ) {
					if ( isset( UM()->user()->previous_data['first_name'] ) ) {
						$fname = get_user_meta( $user_id, 'first_name', true );
						$update_name = UM()->str_replace_first( UM()->user()->previous_data['first_name'], $fname, UM()->user()->previous_data['display_name'] );
					}

					if ( isset( UM()->user()->previous_data['last_name'] ) ) {
						$lname = get_user_meta( $user_id, 'last_name', true );
						if ( isset( $update_name ) ) {
							$update_name = UM()->str_replace_first( UM()->user()->previous_data['last_name'], $lname, $update_name );
						} else {
							$update_name = UM()->str_replace_first( UM()->user()->previous_data['last_name'], $lname, UM()->user()->previous_data['display_name'] );
						}
					}

					if ( isset( UM()->user()->previous_data['nickname'] ) ) {
						$nickname = get_user_meta( $user_id, 'nickname', true );
						if ( isset( $update_name ) ) {
							$update_name = UM()->str_replace_first( UM()->user()->previous_data['nickname'], $nickname, $update_name );
						} else {
							$update_name = UM()->str_replace_first( UM()->user()->previous_data['nickname'], $nickname, UM()->user()->previous_data['display_name'] );
						}
					}

					// unset if the display name is the same
					if ( isset( $update_name ) && $update_name === UM()->user()->previous_data['display_name'] ) {
						unset( $update_name );
					}
				}
			}

			break;
	}

	if ( isset( $update_name ) ) {

		$arr_user = array( 'ID' => $user_id, 'display_name' => $update_name );
		$return = wp_update_user( $arr_user );

		if ( is_wp_error( $return ) ) {
			wp_die(  '<pre>' . var_export( array( 'message' => $return->get_error_message(), 'dump' => $arr_user, 'changes' => $changes ), true ) . '</pre>'  );
		}

	}

	if ( isset( $changes['first_name'] ) || isset( $changes['last_name'] ) ) {
		$user = get_userdata( $user_id );
		if ( ! empty( $user ) && ! is_wp_error( $user ) ) {
			$full_name = $user->display_name;
			$full_name = UM()->validation()->safe_name_in_url( $full_name );

			update_user_meta( UM()->user()->id, 'full_name', $full_name );
		}
	}

	// regenerate slug
	UM()->user()->generate_profile_slug( $user_id );
}
add_action( 'um_update_profile_full_name', 'um_update_profile_full_name', 10, 2 );