<?php

namespace App\Infrastructure\Reports\Services;

use App\Models\ReanimationPatientIndicator;
use App\Models\User;
use Illuminate\Support\Collection;

/**
 * Управляет индикаторами пациентов реанимации для отчётного интерфейса.
 */
class ReanimationIndicatorService
{
    public function save(
        User $user,
        int $departmentId,
        int $medicalHistoryId,
        string $indicator,
        ?string $comment = null,
        ?int $reportId = null
    ): ReanimationPatientIndicator {
        return ReanimationPatientIndicator::query()->create([
            'rf_department_id' => $departmentId,
            'rf_report_id' => $reportId,
            'rf_medicalhistory_id' => $medicalHistoryId,
            'indicator' => $indicator,
            'comment' => $comment,
            'created_by' => $user->id,
        ]);
    }

    /**
     * @param  array<int, int>  $medicalHistoryIds
     * @return Collection<int, ReanimationPatientIndicator>
     */
    public function latestByMedicalHistory(int $departmentId, array $medicalHistoryIds): Collection
    {
        if (empty($medicalHistoryIds)) {
            return collect();
        }

        $subQuery = ReanimationPatientIndicator::query()
            ->selectRaw('MAX(reanimation_patient_indicator_id) as max_id, rf_medicalhistory_id')
            ->where('rf_department_id', $departmentId)
            ->whereIn('rf_medicalhistory_id', $medicalHistoryIds)
            ->groupBy('rf_medicalhistory_id');

        return ReanimationPatientIndicator::query()
            ->joinSub($subQuery, 'latest', function ($join) {
                $join->on('reanimation_patient_indicators.reanimation_patient_indicator_id', '=', 'latest.max_id');
            })
            ->get([
                'reanimation_patient_indicators.rf_medicalhistory_id',
                'reanimation_patient_indicators.indicator',
                'reanimation_patient_indicators.comment',
            ])
            ->keyBy('rf_medicalhistory_id');
    }

    /**
     * @return Collection<int, ReanimationPatientIndicator>
     */
    public function history(int $departmentId, int $medicalHistoryId, int $limit = 50): Collection
    {
        return ReanimationPatientIndicator::query()
            ->where('rf_department_id', $departmentId)
            ->where('rf_medicalhistory_id', $medicalHistoryId)
            ->orderByDesc('reanimation_patient_indicator_id')
            ->limit($limit)
            ->get([
                'reanimation_patient_indicator_id',
                'rf_report_id',
                'rf_medicalhistory_id',
                'indicator',
                'comment',
                'created_by',
                'created_at',
            ]);
    }
}