<?php

namespace App\Infrastructure\Reports\Services;

use App\Models\Department;
use App\Models\DepartmentPatient;
use App\Models\DepartmentPatientOperation;
use App\Models\MedicalHistorySnapshot;
use App\Models\MisServiceMedical;
use App\Models\Report;
use App\Models\User;
use App\Services\DateRangeService;
use App\Services\UnifiedPatientService;
use Illuminate\Support\Collection;
use InvalidArgumentException;

/**
 * Управляет manual/special пациентами отчёта и их операциями.
 *
 * Сервис держит orchestration вокруг legacy UnifiedPatientService, пока
 * patient-write сценарии постепенно выносятся из ReportService.
 */
class ManualPatientManagementService
{
    public function __construct(
        private readonly DateRangeService $dateRangeService,
        private readonly UnifiedPatientService $unifiedPatientService,
        private readonly ReportReadContextResolver $contextResolver,
    ) {}

    /**
     * @param  array<string, mixed>  $data
     */
    public function createManualPatient(Department $department, User $user, array $data): DepartmentPatient
    {
        $report = $this->resolveReportForManualPatient($department, $user, $data);

        return $this->unifiedPatientService->createManualPatient($department, $user, $data, $report->report_id);
    }

    /**
     * @param  array<string, mixed>  $data
     */
    public function setManualPatientOutcome(User $user, int $departmentPatientId, array $data): DepartmentPatient
    {
        $patient = DepartmentPatient::query()
            ->where('department_patient_id', $departmentPatientId)
            ->firstOrFail();

        $updatedPatient = $this->unifiedPatientService->recordManualOutcome($patient, $data);
        $this->syncManualPatientSnapshots($updatedPatient, $user, []);

        return $updatedPatient;
    }

    /**
     * @param  array<string, mixed>  $data
     */
    public function updateManualPatient(User $user, int $departmentPatientId, array $data): DepartmentPatient
    {
        $patient = $this->resolveManageableManualPatient($user, $departmentPatientId);

        $updatedPatient = $this->unifiedPatientService->updateManualPatient($patient, $data);
        $this->syncManualPatientSnapshots($updatedPatient, $user, $data);

        return $updatedPatient;
    }

    public function linkManualPatientToMis(int $departmentPatientId, int $medicalHistoryId): DepartmentPatient
    {
        $patient = DepartmentPatient::query()
            ->where('department_patient_id', $departmentPatientId)
            ->firstOrFail();

        return $this->unifiedPatientService->linkManualPatientToMis($patient, $medicalHistoryId);
    }

    /**
     * @return Collection<int, DepartmentPatientOperation>
     */
    public function getManualPatientOperations(User $user, int $departmentPatientId): Collection
    {
        $patient = $this->resolveManageableManualPatient($user, $departmentPatientId);

        return $patient->operations()
            ->with('serviceMedical')
            ->orderByDesc('started_at')
            ->get();
    }

    /**
     * @param  array<string, mixed>  $data
     */
    public function createManualPatientOperation(
        User $user,
        int $departmentPatientId,
        array $data
    ): DepartmentPatientOperation {
        $patient = $this->resolveManageableManualPatient($user, $departmentPatientId);
        $service = $this->resolveMedicalService((int) $data['service_id']);

        return $patient->operations()->create([
            'rf_kl_service_medical_id' => $service->ServiceMedicalID,
            'service_code' => $service->ServiceMedicalCode,
            'service_name' => $service->ServiceMedicalName,
            'urgency' => $data['urgency'],
            'started_at' => $data['started_at'],
            'ended_at' => $data['ended_at'],
            'created_by' => $user->id,
        ])->load('serviceMedical');
    }

    /**
     * @param  array<string, mixed>  $data
     */
    public function updateManualPatientOperation(
        User $user,
        int $departmentPatientId,
        int $operationId,
        array $data
    ): DepartmentPatientOperation {
        $patient = $this->resolveManageableManualPatient($user, $departmentPatientId);
        $service = $this->resolveMedicalService((int) $data['service_id']);

        $operation = $patient->operations()
            ->where('department_patient_operation_id', $operationId)
            ->firstOrFail();

        $operation->update([
            'rf_kl_service_medical_id' => $service->ServiceMedicalID,
            'service_code' => $service->ServiceMedicalCode,
            'service_name' => $service->ServiceMedicalName,
            'urgency' => $data['urgency'],
            'started_at' => $data['started_at'],
            'ended_at' => $data['ended_at'],
        ]);

        return $operation->fresh()->load('serviceMedical');
    }

    public function deleteManualPatientOperation(User $user, int $departmentPatientId, int $operationId): void
    {
        $patient = $this->resolveManageableManualPatient($user, $departmentPatientId);

        $patient->operations()
            ->where('department_patient_operation_id', $operationId)
            ->firstOrFail()
            ->delete();
    }

    private function resolveManageableManualPatient(User $user, int $departmentPatientId): DepartmentPatient
    {
        $query = DepartmentPatient::query()
            ->where('department_patient_id', $departmentPatientId)
            ->whereIn('source_type', ['manual', 'special']);

        if (! $user->isAdmin() && ! $user->isHeadOfDepartment()) {
            $query->where('rf_department_id', $user->department->department_id);
        }

        return $query->firstOrFail();
    }

    /**
     * @param  array<string, mixed>  $data
     */
    private function syncManualPatientSnapshots(DepartmentPatient $patient, User $user, array $data): void
    {
        $reportIds = $patient->rf_report_id
            ? [$patient->rf_report_id]
            : (isset($data['startAt'], $data['endAt']) && $data['startAt'] && $data['endAt']
                ? $this->contextResolver
                    ->getReportsForDateRange(
                        $patient->rf_department_id,
                        $this->dateRangeService->getNormalizedDateRange(
                            $user,
                            (string) $data['startAt'],
                            (string) $data['endAt']
                        )
                    )
                    ->pluck('report_id')
                    ->values()
                    ->all()
                : []);

        if (empty($reportIds)) {
            return;
        }

        MedicalHistorySnapshot::query()
            ->whereIn('rf_report_id', $reportIds)
            ->where('rf_department_patient_id', $patient->department_patient_id)
            ->update([
                'patient_kind' => $patient->patient_kind,
                'full_name' => $patient->full_name,
                'birth_date' => $patient->birth_date,
                'diagnosis_code' => $patient->diagnosis_code,
                'diagnosis_name' => $patient->diagnosis_name,
                'admitted_at' => $patient->admitted_at,
                'outcome_type' => $patient->is_current ? null : $patient->outcome_type,
                'outcome_at' => $patient->is_current ? null : $patient->outcome_at,
                'updated_at' => now(),
            ]);
    }

    /**
     * @param  array<string, mixed>  $data
     */
    private function resolveReportForManualPatient(Department $department, User $user, array $data): Report
    {
        $reportId = $data['report_id'] ?? null;
        if ($reportId) {
            return Report::query()
                ->where('report_id', $reportId)
                ->where('rf_department_id', $department->department_id)
                ->firstOrFail();
        }

        if (! isset($data['startAt'], $data['endAt']) || ! $data['startAt'] || ! $data['endAt']) {
            throw new InvalidArgumentException('Не указан отчет или диапазон для привязки спецконтингента');
        }

        $dateRange = $this->dateRangeService->getNormalizedDateRange(
            $user,
            (string) $data['startAt'],
            (string) $data['endAt']
        );

        $existingReport = Report::query()
            ->where('rf_department_id', $department->department_id)
            ->exactPeriod($dateRange->startSql(), $dateRange->endSql())
            ->first();

        if ($existingReport) {
            return $existingReport;
        }

        return Report::query()->create([
            'rf_department_id' => $department->department_id,
            'rf_user_id' => $user->id,
            'rf_lpudoctor_id' => $data['user_id'] ?? $user->rf_lpudoctor_id,
            'sent_at' => $dateRange->endSql(),
            'created_at' => $dateRange->endSql(),
            'period_start' => $dateRange->startSql(),
            'period_end' => $dateRange->endSql(),
            'status' => 'draft',
        ]);
    }

    private function resolveMedicalService(int $serviceId): MisServiceMedical
    {
        return MisServiceMedical::query()
            ->where('ServiceMedicalID', $serviceId)
            ->firstOrFail();
    }
}