<?php

declare(strict_types=1);

final class ShelterRoomService
{
    public const PERIODS = ['morning', 'noon', 'afternoon', 'evening'];

    public static function all(bool $activeOnly = false): array
    {
        $sql =
            'SELECT * FROM shelter_rooms' .
            ($activeOnly ? ' WHERE active=1' : '') .
            ' ORDER BY sort_order,name COLLATE NOCASE';
        $rooms = DB::pdo()->query($sql)->fetchAll(PDO::FETCH_ASSOC);
        $boxes = DB::pdo()
            ->query('SELECT * FROM shelter_boxes ORDER BY sort_order,name COLLATE NOCASE')
            ->fetchAll(PDO::FETCH_ASSOC);
        foreach ($rooms as &$room) {
            $room['boxes'] = array_values(
                array_filter(
                    $boxes,
                    static fn($box) => (int) $box['room_id'] === (int) $room['id'] &&
                        (!$activeOnly || (int) $box['active'] === 1),
                ),
            );
        }
        return $rooms;
    }

    public static function byCode(bool $activeOnly = true): array
    {
        $result = [];
        foreach (self::all($activeOnly) as $room) {
            $result[(string) $room['code']] = $room;
        }
        return $result;
    }

    public static function resolveAnimal(array $animal, array $rooms): string
    {
        $stored = (string) ($animal['refuge_room'] ?? '');
        if ($stored !== '' && isset($rooms[$stored])) {
            return $stored;
        }
        $status = (string) ($animal['status'] ?? 'refuge');
        foreach ($rooms as $code => $room) {
            if ((string) $room['status_code'] === $status) {
                return (string) $code;
            }
        }
        return array_key_first($rooms) ?? '';
    }

    public static function normalizeCode(string $value): string
    {
        $value = mb_strtolower(trim($value));
        $value = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $value) ?: $value;
        return trim(preg_replace('/[^a-z0-9]+/', '-', $value) ?? '', '-');
    }

    public static function periods(array $room): array
    {
        $periods = array_values(array_intersect(
            self::PERIODS,
            explode(',', (string) ($room['care_periods'] ?? 'morning,evening')),
        ));
        return $periods ?: ['morning', 'evening'];
    }

    public static function accepts(array $room, array $animal): bool
    {
        $species = trim((string) ($room['allowed_species'] ?? ''));
        $sex = trim((string) ($room['allowed_sex'] ?? ''));
        $fiv = (string) ($room['required_fiv'] ?? 'any');
        if ($species !== '' && SpeciesService::normalize((string) ($animal['species'] ?? '')) !== $species) {
            return false;
        }
        if ($sex !== '' && (string) ($animal['sex'] ?? '') !== $sex) {
            return false;
        }
        $positive = (int) ($animal['fiv'] ?? 0) === 1 || (string) ($animal['fiv_status'] ?? '') === 'positive';
        return $fiv === 'any' || ($fiv === 'positive' ? $positive : !$positive);
    }
}