<?php

class RsvFormPriceCalculatorRegistry {
    /** @var array<string, callable(RsvFormElementDefinition, mixed): float> */
    private array $calculators = [];

    public function register(string $type, callable $calculator): void {
        $this->calculators[$type] = $calculator;
    }

    public function get(string $type): ?callable {
        return $this->calculators[$type] ?? null;
    }

    /** Builds the registry and lets other modules contribute calculators. */
    public static function boot(): self {
        $registry = new self();
        do_action('rsv-register-price-calculator', $registry);
        return $registry;
    }
}