<?php

namespace App\Infrastructure\Reports\Services;

use App\Domain\Reports\ValueObjects\MetrikaConfig;
use App\Models\Department;
use App\Models\MisLpuDoctor;
use App\Models\Report;
use App\Models\UnwantedEvent;
use App\Models\User;
use App\Services\DateRange;
use Carbon\Carbon;
use Illuminate\Support\Collection;

/**
 * Read-side сервис для metadata отчёта: текущий отчёт, события, планы и периоды.
 */
class ReportMetadataReadService
{
    public function __construct(
        private readonly ReportReadContextResolver $contextResolver,
    ) {}

    public function getCurrentReportInfo(Department $department, User $user, DateRange $dateRange): array
    {
        $reportToday = $this->contextResolver->resolveReportForPeriod($department->department_id, $dateRange);

        $isHeadOrAdmin = $user->isHeadOfDepartment() || $user->isAdmin();
        $useSnapshots = $isHeadOrAdmin || ! $dateRange->isEndDateToday() || $reportToday;

        if ($useSnapshots && $isHeadOrAdmin && $reportToday) {
            $fillableUserId = $reportToday->rf_lpudoctor_id ?? null;
        } else {
            $fillableUserId = request()->query('userId', $user->rf_lpudoctor_id);
        }

        $unwantedEvents = $this->getUnwantedEvents($department, $dateRange);
        $isActiveSendButton = $this->isSendButtonActive($user, $dateRange, $reportToday);

        $message = null;
        if ($reportToday) {
            $reportDoctor = $reportToday->lpuDoctor;
            $message = "Отчет создан пользователем: $reportDoctor->FAM_V $reportDoctor->IM_V $reportDoctor->OT_V";
        }

        $statusMessage = $reportToday
            ? ($reportToday->status === 'submitted'
                ? 'Этот отчет в статусе: опубликован'
                : 'Этот отчет в статусе: черновик')
            : null;

        $lpuDoctor = $this->getDoctorInfo($fillableUserId, $dateRange);
        $date = $isHeadOrAdmin ? [
            $dateRange->startDate->getTimestampMs(),
            $dateRange->endDate->getTimestampMs(),
        ] : $dateRange->endDate->getTimestampMs();

        return [
            'report_id' => $reportToday?->report_id,
            'unwantedEvents' => $unwantedEvents,
            'isActiveSendButton' => $isActiveSendButton,
            'message' => $dateRange->isOneDay ? $message : null,
            'status' => $reportToday?->status ?? 'draft',
            'statusMessage' => $dateRange->isOneDay ? $statusMessage : null,
            'canPublish' => (bool) $reportToday && ($reportToday->status === 'draft') && $isActiveSendButton,
            'isOneDay' => $dateRange->isOneDay,
            'isHeadOrAdmin' => $isHeadOrAdmin,
            'dates' => $date,
            'userId' => $fillableUserId,
            'userName' => $lpuDoctor ? "$lpuDoctor->FAM_V $lpuDoctor->IM_V $lpuDoctor->OT_V" : null,
        ];
    }

    /**
     * @return Collection<int, array<string, mixed>>
     */
    public function getUnwantedEvents(Department $department, DateRange $dateRange): Collection
    {
        return UnwantedEvent::query()
            ->whereHas('report', function ($query) use ($department, $dateRange) {
                $query->where('rf_department_id', $department->department_id);

                if ($dateRange->isOneDay) {
                    $query->exactPeriod($dateRange->startSql(), $dateRange->endSql());
                } else {
                    $query->withinPeriod($dateRange->startSql(), $dateRange->endSql());
                }
            })
            ->get()
            ->map(function (UnwantedEvent $item) {
                return [
                    ...$item->toArray(),
                    'created_at' => Carbon::parse($item->created_at)->format('Создано d.m.Y в H:i'),
                ];
            });
    }

    /**
     * @return Collection<int, Report>
     */
    public function getReportsForDateRange(int $departmentId, DateRange $dateRange): Collection
    {
        return $this->contextResolver->getReportsForDateRange($departmentId, $dateRange);
    }

    public function getRecipientPlanOfYear(Department $department, DateRange $dateRange): array
    {
        $periodPlanModel = $department->recipientPlanOfYear();
        $monthsInPeriod = ceil($dateRange->startDate->diffInMonths($dateRange->endDate));
        $annualPlan = $periodPlanModel ? (int) $periodPlanModel->value : 0;
        $oneMonthPlan = ceil($annualPlan / 12);
        $periodPlan = round($oneMonthPlan * $monthsInPeriod);

        $query = $department->reports()
            ->with('metrikaResults')
            ->where('period_start', '>', $dateRange->startSql())
            ->where('period_end', '<=', $dateRange->endSql());

        if ($dateRange->isOneDay) {
            $query->where('period_start', '>=', $dateRange->startFirstOfMonth())
                ->where('period_end', '<=', $dateRange->endSql());
        } else {
            $query->where('period_start', '>', $dateRange->startSql())
                ->where('period_end', '<=', $dateRange->endSql());
        }

        $progress = 0;

        foreach ($query->get() as $report) {
            $outcome = $report->metrikaResults()
                ->where('rf_metrika_item_id', MetrikaConfig::OUTCOME)
                ->first();

            if ($outcome) {
                $progress += (int) $outcome->value;
            }
        }

        return [
            'plan' => $periodPlan,
            'progress' => $progress,
        ];
    }

    private function isSendButtonActive(User $user, DateRange $dateRange, ?Report $reportToday): bool
    {
        if (! $user->isHeadOfDepartment() && ! $user->isAdmin()) {
            if ($reportToday && $reportToday->status === 'submitted') {
                return false;
            }

            return $dateRange->isEndDateToday();
        }

        return (bool) $reportToday && $dateRange->isOneDay;
    }

    private function getDoctorInfo(?int $doctorId, DateRange $dateRange): ?MisLpuDoctor
    {
        if (! $doctorId || ! $dateRange->isOneDay) {
            return null;
        }

        return MisLpuDoctor::query()
            ->where('LPUDoctorID', $doctorId)
            ->first();
    }
}