<?php

namespace App\Services\Analytics\DataSets;

use App\Domain\Reports\ValueObjects\MetrikaConfig;
use App\Models\Department;
use App\Models\MisLpuDoctor;
use App\Services\Analytics\AbstractDataSet;
use App\Services\Analytics\AnalyticsQuery;
use App\Services\Analytics\Dimension;
use App\Services\Analytics\FilterDef;
use App\Services\Analytics\Measure;
use Illuminate\Database\Query\Builder;
use Illuminate\Support\Facades\DB;

class ShiftsDataSet extends AbstractDataSet
{
    private const STATUS_OPTIONS = [1 => 'Черновик', 2 => 'Сдан'];

    public function key(): string
    {
        return 'shifts';
    }

    public function label(): string
    {
        return 'Смены / дежурства';
    }

    public function description(): string
    {
        return 'Показатели сданных дежурных смен отделения';
    }

    public function category(): string
    {
        return 'Дежурства';
    }

    protected function dateField(): string
    {
        return 'rd.period_start';
    }

    protected function baseQuery(AnalyticsQuery $query): Builder
    {
        return DB::table('report_duties as rd')
            ->leftJoin('duty_report_metric_results as m', 'm.rf_report_id', '=', 'rd.id')
            ->where('rd.rf_department_id', $query->department->department_id)
            ->where('rd.status_id', 2)
            ->where('rd.period_start', '>=', $query->dateRange->startSql())
            ->where('rd.period_end', '<=', $query->dateRange->endSql());
    }

    public function dimensions(): array
    {
        return [
            new Dimension('shift_date', 'Дата смены', 'date', 'CAST(rd.period_start AS date)'),
            new Dimension(
                'doctor',
                'Врач',
                'string',
                'rd.rf_lpudoctor_id',
                labels: fn (array $ids) => MisLpuDoctor::whereIn('LPUDoctorID', $ids)->get()
                    ->mapWithKeys(fn ($d) => [$d->LPUDoctorID => trim("{$d->FAM_V} {$d->IM_V} {$d->OT_V}") ?: "Врач #{$d->LPUDoctorID}"])
                    ->all(),
            ),
            new Dimension(
                'department',
                'Отделение',
                'string',
                'rd.rf_department_id',
                labels: fn (array $ids) => Department::whereIn('department_id', $ids)->get()
                    ->mapWithKeys(fn ($d) => [$d->department_id => $d->name_full ?? $d->name_short])
                    ->all(),
            ),
            new Dimension(
                'status',
                'Статус',
                'string',
                'rd.status_id',
                labels: fn () => self::STATUS_OPTIONS,
            ),
        ];
    }

    public function measures(): array
    {
        return [
            new Measure('shifts_count', 'Количество смен', 'count', 'COUNT(DISTINCT rd.id)'),
            new Measure('beds', 'Коек', 'count', $this->sum(MetrikaConfig::BEDS)),
            new Measure('recipient_plan', 'Поступило плановых', 'count', $this->sum(MetrikaConfig::PLAN)),
            new Measure('recipient_emergency', 'Поступило экстренных', 'count', $this->sum(MetrikaConfig::EMERGENCY)),
            new Measure('discharged', 'Выписано', 'count', $this->sum(MetrikaConfig::DISCHARGED)),
            new Measure('transferred', 'Переведено', 'count', $this->sum(MetrikaConfig::TRANSFERRED)),
            new Measure('deceased', 'Умерло', 'count', $this->sum(MetrikaConfig::DECEASED)),
            new Measure('surgery_plan', 'Операции плановые', 'count', $this->sum(MetrikaConfig::PLAN_SURGERY)),
            new Measure('surgery_emergency', 'Операции экстренные', 'count', $this->sum(MetrikaConfig::EMERGENCY_SURGERY)),
            new Measure('occupancy_percent', 'Занятость, %', 'percent', $this->avg(MetrikaConfig::DEPARTMENT_LOADED)),
            new Measure('avg_bed_days', 'Ср. койко-день', null, $this->avg(MetrikaConfig::AVERAGE_BED_DAYS)),
            new Measure('lethality_percent', 'Летальность, %', 'percent', $this->avg(MetrikaConfig::LETHALITY)),
            new Measure('staff_count', 'Мед. персонал', 'count', $this->avg(MetrikaConfig::STAFF_COUNT)),
        ];
    }

    public function filters(): array
    {
        return [
            new FilterDef('doctor', 'Врач', 'rd.rf_lpudoctor_id', 'select', null, 'doctors'),
        ];
    }

    private function sum(int $metricId): string
    {
        return "SUM(CASE WHEN m.rf_metrika_item_id = {$metricId} THEN NULLIF(m.value, '')::numeric ELSE 0 END)";
    }

    private function avg(int $metricId): string
    {
        return "AVG(CASE WHEN m.rf_metrika_item_id = {$metricId} THEN NULLIF(m.value, '')::numeric END)";
    }
}