<?php

declare(strict_types=1);

namespace App\Rules\Artist;

use App\Models\Event;
use Carbon\CarbonImmutable;
use Closure;
use Illuminate\Contracts\Validation\ValidationRule;

/**
 * Validates that a candidate datetime sits inside the event's
 * [start_at, end_at] window. Works for flat events (single window)
 * and for sub-events (sub-event window); festival-level events are
 * usually not the target — the FormRequest passes the *sub-event* id
 * for performances and the *containing* event for the stage's day.
 *
 * Rule passes silently when value is null or when the event cannot
 * be found (the FormRequest owns the `required`/`exists` decision).
 */
final class WithinEventBounds implements ValidationRule
{
    public function __construct(
        private readonly ?string $eventId,
    ) {}

    public function validate(string $attribute, mixed $value, Closure $fail): void
    {
        if ($value === null || $this->eventId === null) {
            return;
        }

        $event = Event::withoutGlobalScopes()->find($this->eventId);
        if ($event === null) {
            return;
        }

        $candidate = CarbonImmutable::parse((string) $value);
        $start = CarbonImmutable::instance($event->start_at);
        $end = CarbonImmutable::instance($event->end_at);

        if ($candidate->lt($start) || $candidate->gt($end)) {
            $fail(sprintf(
                'De datum moet binnen het evenement (%s — %s) vallen.',
                $start->format('Y-m-d H:i'),
                $end->format('Y-m-d H:i'),
            ));
        }
    }
}