<?php
/**
 * Context available to variable resolvers.
 *
 * @package Bookline
 */

declare( strict_types=1 );

namespace Bookline\Domain\Notification;

/**
 * Flat string map of source data for template variables.
 *
 * @since 0.1.0
 */
final class VariableContext {

	/**
	 * Constructor.
	 *
	 * @param array<string, string> $values Raw unescaped values keyed by variable key.
	 */
	public function __construct(
		private readonly array $values,
	) {}

	/**
	 * Read a raw value.
	 *
	 * @param string $key     Variable key.
	 * @param string $fallback Default.
	 *
	 * @since 0.1.0
	 */
	public function get( string $key, string $fallback = '' ): string {
		return $this->values[ $key ] ?? $fallback;
	}

	/**
	 * All raw values.
	 *
	 * @return array<string, string>
	 *
	 * @since 0.1.0
	 */
	public function all(): array {
		return $this->values;
	}
}