<?php

namespace App\Services\Reports\BuiltIn;

use App\Domain\Reports\ValueObjects\MetrikaConfig;
use App\Models\Department;
use App\Models\DepartmentMetrikaDefault;
use App\Models\ReportNursePatient;
use App\Services\Classification\PatientStatusClassifier;
use App\Services\DateRange;
use App\Services\Reports\Contracts\ReportDefinition;
use App\Services\Reports\ReportPayload;
use App\Services\Reports\ReportSection;
use App\Services\Reports\ReportSourceRegistry;

class HeadNurseReport implements ReportDefinition
{
    public function __construct(private readonly ReportSourceRegistry $sources) {}

    public function code(): string
    {
        return 'nurse';
    }

    public function label(): string
    {
        return 'Отчёт старшей медсестры';
    }

    public function requiredPermissions(): array
    {
        return ['nurse.report.view'];
    }

    public function build(Department $department, DateRange $dateRange): ReportPayload
    {
        $sections = [
            $this->buildMetricsSection($department, $dateRange),
            $this->sources->get('nurse_patients')->toSection($department, $dateRange, null, [], 'Журнал пациентов'),
        ];

        return new ReportPayload(
            title: $this->label(),
            meta: [
                'Отделение' => $department->name_full ?? $department->name_short,
                'Период' => $dateRange->start()->format('d.m.Y H:i').' — '.$dateRange->end()->format('d.m.Y H:i'),
                'Сформирован' => now('Asia/Yakutsk')->format('d.m.Y H:i'),
            ],
            sections: $sections,
        );
    }

    private function buildMetricsSection(Department $department, DateRange $dateRange): ReportSection
    {
        $reportIds = $this->sources->nurseReports($department, $dateRange)->pluck('id');

        $counts = [
            'recipient' => 0,
            'discharged' => 0,
            'transferred' => 0,
            'deceased' => 0,
            'in_department' => 0,
        ];

        if ($reportIds->isNotEmpty()) {
            $patients = ReportNursePatient::whereIn('report_nurse_id', $reportIds)->with('migrations')->get();

            foreach ($patients as $patient) {
                match (PatientStatusClassifier::classify($patient, $dateRange)) {
                    PatientStatusClassifier::STATUS_RECIPIENT => $counts['recipient']++,
                    PatientStatusClassifier::STATUS_DISCHARGED => $counts['discharged']++,
                    PatientStatusClassifier::STATUS_TRANSFERRED => $counts['transferred']++,
                    PatientStatusClassifier::STATUS_DECEASED => $counts['deceased']++,
                    PatientStatusClassifier::STATUS_IN_DEPARTMENT => $counts['in_department']++,
                    default => null,
                };
            }
        }

        $beds = (int) (DepartmentMetrikaDefault::where('rf_department_id', $department->department_id)
            ->where('rf_metrika_item_id', MetrikaConfig::BEDS)
            ->value('value') ?? 0);

        $occupancy = $beds > 0 ? round($counts['in_department'] * 100 / $beds, 1) : 0;

        $row = [
            'beds' => $beds,
            'recipient' => $counts['recipient'],
            'discharged' => $counts['discharged'],
            'transferred' => $counts['transferred'],
            'deceased' => $counts['deceased'],
            'in_department' => $counts['in_department'],
            'occupancy_percent' => $occupancy,
        ];

        return new ReportSection('Показатели', [
            'beds' => 'Коек',
            'recipient' => 'Поступило',
            'discharged' => 'Выписано',
            'transferred' => 'Переведено',
            'deceased' => 'Умерло',
            'in_department' => 'В отделении',
            'occupancy_percent' => 'Занятость, %',
        ], [$row]);
    }
}