<?php
/**
 * User_Custom_Fields class.
 *
 * @package WordPress
 */

/**
 * Main purpose of this class is to handle custom user fields
 */
class Digitalmind_User_Custom_Fields {


	/**
	 * Construct for User_Custom_Fields
	 * We are going to hook methods from this class with actions within this constructor
	 */
	public function __construct() {
		add_filter( 'user_profile_update_errors', array( $this, 'check_fields' ), 10, 3 );
		add_filter( 'user_contactmethods',array( $this, 'add_contact_methods' ), 10, 1 );
	}


	/**
	 * Adding new contact methods (social links)
	 * @param array $contactmethods Containing all contact methods.
	 * @return string
	 */
	public function add_contact_methods( $contactmethods ) {
		$contactmethods['twitter'] = 'Twitter';
		$contactmethods['facebook'] = 'Facebook';
		$contactmethods['gplus'] = 'Google plus';
		$contactmethods['youtube'] = 'Youtube';
		$contactmethods['pinterest'] = 'Pinterest';
		$contactmethods['instagram'] = 'Instagram';
		$contactmethods['linkedin'] = 'Linkedin';

		unset( $contactmethods['aim'] );
		unset( $contactmethods['yim'] );
		unset( $contactmethods['jabber'] );

		return $contactmethods;
	}


	/**
	 * Checking is url ok.
	 * @param string $url Url.
	 * @return boolean
	 */
	public function is_valid_url( $url ) {
		if ( ! filter_var( $url, FILTER_VALIDATE_URL ) === false ) {
			return true;
		} else {
			return false;
		}
	}


	/**
	 * Check fields submited. If something is wrong raise an error.
	 * @param object $errors Errors.
	 * @param object $update Update.
	 * @param object $user User.
	 */
	public function check_fields( $errors, $update, $user ) {

		$status = true;
		$message = '';

		$linkedin_url = esc_url( wp_unslash( $_POST['linkedin'] ) );
		if ( ! empty( $linkedin_url ) && ( ! $this->is_valid_url( $linkedin_url ) || strpos( $linkedin_url, 'linkedin' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid linkedin url. Please insert valid url and try again.', THEMESLUG );
		}

		$instagram_url = esc_url( wp_unslash( $_POST['instagram'] ) );
		if ( ! empty( $instagram_url ) && ( ! $this->is_valid_url( $instagram_url ) || strpos( $instagram_url, 'instagram' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid instagram url. Please insert valid url and try again.', THEMESLUG );
		}

		$pinterest_url = esc_url( wp_unslash( $_POST['pinterest'] ) );
		if ( ! empty( $pinterest_url ) && ( ! $this->is_valid_url( $pinterest_url ) || strpos( $pinterest_url, 'pinterest' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid pinterest url. Please insert valid url and try again.', THEMESLUG );
		}

		$youtube_url = esc_url( wp_unslash( $_POST['youtube'] ) );
		if ( ! empty( $youtube_url ) && ( ! $this->is_valid_url( $youtube_url ) || strpos( $youtube_url, 'youtube' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid youtube url. Please insert valid url and try again.', THEMESLUG );
		}

		$gplus_url = esc_url( wp_unslash( $_POST['gplus'] ) );
		if ( ! empty( $gplus_url ) && ( ! $this->is_valid_url( $gplus_url ) || strpos( $gplus_url, 'google' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid google+ url. Please insert valid url and try again.', THEMESLUG );
		}

		$twitter_url = esc_url( wp_unslash( $_POST['twitter'] ) );
		if ( ! empty( $twitter_url ) && ( ! $this->is_valid_url( $twitter_url ) || strpos( $twitter_url, 'twitter' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid twitter url. Please insert valid url and try again.', THEMESLUG );
		}

		$facebook_url = esc_url( wp_unslash( $_POST['facebook'] ) );
		if ( ! empty( $facebook_url ) && ( ! $this->is_valid_url( $facebook_url ) || strpos( $facebook_url, 'facebook' ) === false ) ) {
			$status = false;
			$message = __( 'Invalid facebook url. Please insert valid url and try again.' );
		}

		if ( ! $status ) {
			$errors->add( 'demo_error', 'ERR: '. $message );
		}
	}

}
new Digitalmind_User_Custom_Fields();