<?php

declare(strict_types=1);

namespace App\FormBuilder\Publishing;

use App\Models\FormBuilder\FormSchema;
use Closure;

/**
 * RFC-WS-6 §3 (Q13) — higher-order composer. Runs the predicate first;
 * delegates to the sub-guard only if the predicate returns true.
 * Otherwise returns passed().
 */
final readonly class ConditionalRequirement implements PublishGuard
{
    /**
     * @param  Closure(FormSchema): bool  $predicate
     */
    public function __construct(
        private Closure $predicate,
        private PublishGuard $subGuard,
        private string $code,
    ) {}

    public function code(): string
    {
        return "conditional:{$this->code}";
    }

    public function evaluate(FormSchema $schema): PublishGuardResult
    {
        if (! ($this->predicate)($schema)) {
            return PublishGuardResult::passed($this->code());
        }

        $subResult = $this->subGuard->evaluate($schema);
        if ($subResult->passed) {
            return PublishGuardResult::passed($this->code());
        }

        return PublishGuardResult::failed(
            guardCode: $this->code(),
            messageKey: $subResult->messageKey ?? 'form_builder_publish_guards.conditional',
            offendingFormFieldId: $subResult->offendingFormFieldId,
            context: array_merge(
                $subResult->context,
                ['delegated_to' => $this->subGuard->code()],
            ),
        );
    }
}