<?php
/**
 * Which marketplace connections need the owner. Pure PHP.
 *
 * @package Tidelist
 */

namespace Tidelist\Channel;

/**
 * Connection alerts.
 */
final class ConnectionAlerts {

	/**
	 * The problems of all channels, by channel ID, each with the channel name in front.
	 *
	 * @param ChannelInterface[] $channels Channels.
	 * @return array<string, string>
	 */
	public static function problems( array $channels ): array {
		$out = array();
		foreach ( $channels as $id => $channel ) {
			$problem = trim( $channel->connection()->problem );
			if ( '' !== $problem ) {
				$out[ (string) $id ] = $channel->label() . ': ' . $problem;
			}
		}
		return $out;
	}
}