<?php

namespace App\Scheduling;

use App\Enums\EventState;
use App\Models\Event;
use App\Models\User;
use Carbon\CarbonImmutable;

/** «Помню»: до какого момента молчать, по текущему состоянию. */
final class QuietRule
{
    public function __construct(private readonly DueResolver $due) {}

    public function afterAck(Event $event, User $user, EventState $state, Due $due, CarbonImmutable $now): CarbonImmutable
    {
        return match ($state) {
            EventState::Preparing => $this->nextCascadePoint($event, $user, $due, $now),
            EventState::Today => $now->startOfHour()->addHours(2),
            EventState::Overdue => $now->startOfDay()->addDays(2),
            default => $now,
        };
    }

    private function nextCascadePoint(Event $event, User $user, Due $due, CarbonImmutable $now): CarbonImmutable
    {
        $today = $now->startOfDay();
        foreach (Cascade::points($this->due->fireStart($event, $user), $due->day) as $point) {
            if ($point->gt($today)) {
                return $point;
            }
        }

        return $this->due->todayStart($due, $user);
    }
}