<?php

namespace App\Services\StudyRouter;

use App\Domain\Rule\MatchMode;
use App\Models\DicomRoutingRule;
use App\Services\ContentMatcher;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;

final class DicomStudyRouter
{
    private static ?Collection $rules;

    private static int $catchAll = -1;

    /**
     * @return array<int, ?int>
     */
    public static function map(?string $input): array
    {
        if (is_null(self::$rules)) {
            self::$rules = Cache::remember('dicom.routers',
                now()->addMinutes(15),
                fn () => DicomRoutingRule::active()->with('conditions')->get()
            );
            self::$catchAll = DB::table('institutes')
                ->where('name', 'Catch-all')
                ->first('id')
                ->id;
        }

        if (! blank($input)) {
            $input = strtolower($input);

            foreach (self::$rules as $pattern) {
                if (ContentMatcher::match($input, $pattern->name, MatchMode::from($pattern->match_mode))) {
                    return [$pattern->institute_id, $pattern->facility_id];
                }
            }
        }

        return [self::$catchAll, null];
    }
}