<?php

namespace App\Services;

use App\Models\MisMigrationPatient;
use Illuminate\Support\Facades\DB;

class CurrentPatientService
{
    const PLAN_STATUSES = [1];

    const EMERGENCY_STATUSES = [2, 3];

    public function getCurrentMedicalHistoryIds(string $type, int $branchId, DateRange $dateRange, bool $fillableAuto = false)
    {
        if ($fillableAuto) {
            return $this->getHistoricalCurrentMedicalHistoryIds($type, $branchId, $dateRange);
        }

        $typeIds = match ($type) {
            'plan' => self::PLAN_STATUSES,
            'emergency' => self::EMERGENCY_STATUSES,
            default => null
        };

        return MisMigrationPatient::currentlyInTreatment($branchId)
            ->whereHas('medicalHistory', function ($q) use ($typeIds) {
                $q->whereIn('rf_EmerSignID', $typeIds);
            })
            ->pluck('rf_MedicalHistoryID')
            ->toArray();
    }

    public function getHistoricalCurrentMedicalHistoryIds(?string $type, int $branchId, DateRange $dateRange): array
    {
        $endAt = $dateRange->endSql();

        $typeIds = match ($type) {
            'plan' => self::PLAN_STATUSES,
            'emergency' => self::EMERGENCY_STATUSES,
            default => null
        };

        $lastMovementSubquery = DB::table('stt_migrationpatient as mp')
            ->selectRaw('
                mp."rf_MedicalHistoryID",
                mp."rf_StationarBranchID",
                mp."DateIngoing",
                mp."SystemDate",
                mp."MigrationPatientID",
                row_number() over (
                    partition by mp."rf_MedicalHistoryID"
                    order by mp."DateIngoing" desc, mp."SystemDate" desc, mp."MigrationPatientID" desc
                ) as rn
            ')
            ->where('mp.rf_MedicalHistoryID', '<>', 0)
            ->where('mp.DateIngoing', '<', $endAt);

        return DB::query()
            ->fromSub($lastMovementSubquery, 'last_mp')
            ->leftJoin('stt_medicalhistory as mh', 'mh.MedicalHistoryID', '=', 'last_mp.rf_MedicalHistoryID')
            ->where('last_mp.rn', 1)
            ->where('last_mp.rf_StationarBranchID', $branchId)
            ->where(function ($q) use ($endAt) {
                $q->whereNull('mh.DateExtract')
                    ->orWhere('mh.DateExtract', '>=', $endAt)
                    ->orWhereDate('mh.DateExtract', '1900-01-01')
                    ->orWhereDate('mh.DateExtract', '2222-01-01');
            })
            ->where(function ($q) use ($endAt) {
                $q->whereNull('mh.DateDeath')
                    ->orWhere('mh.DateDeath', '>=', $endAt)
                    ->orWhereDate('mh.DateDeath', '1900-01-01')
                    ->orWhereDate('mh.DateDeath', '2222-01-01');
            })
            ->when($typeIds, function ($q) use ($typeIds) {
                $q->whereIn('mh.rf_EmerSignID', $typeIds);
            })
            ->pluck('last_mp.rf_MedicalHistoryID')
            ->toArray();
    }
}