<?php

namespace App\Infrastructure\Reports\Services;

use App\Models\MisMedicalHistory;
use App\Models\MisMigrationPatient;
use App\Models\MisStationarBranch;
use App\Models\Report;
use App\Models\User;
use Carbon\Carbon;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;

/**
 * Runtime-обвязка тяжёлых report-save операций: память, query log и cache.
 */
class ReportRuntimeService
{
    public function prepareForHeavySave(): void
    {
        $connectionNames = array_unique(array_filter([
            DB::getDefaultConnection(),
            (new MisMedicalHistory)->getConnectionName(),
            (new MisMigrationPatient)->getConnectionName(),
            (new MisStationarBranch)->getConnectionName(),
        ]));

        foreach ($connectionNames as $connectionName) {
            try {
                $connection = DB::connection($connectionName);
                $connection->disableQueryLog();
                $connection->flushQueryLog();
            } catch (\Throwable) {
                // best-effort cleanup only
            }
        }

        if (function_exists('gc_collect_cycles')) {
            gc_collect_cycles();
        }
    }

    public function clearCacheAfterReportCreation(User $user, Report $report): void
    {
        $this->clearDailyCache($user, $report->created_at);
    }

    private function clearDailyCache(User $user, mixed $reportDate): void
    {
        $datesToClear = [
            Carbon::parse($reportDate)->format('Y-m-d'),
            Carbon::parse($reportDate)->subDay()->format('Y-m-d'),
        ];

        foreach ($datesToClear as $date) {
            Cache::forget($this->generateDailyCacheKey($user, $date));
        }
    }

    private function generateDailyCacheKey(User $user, string $date): string
    {
        return 'daily_stats:'.$user->rf_department_id.':'.$date;
    }
}