<?php

namespace App\Models;

use App\Services\DateRange;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class MigrationPatient extends MaterializedViewModel
{
    protected $table = 'mv_migrationpatient_details';
    protected $primaryKey = 'id';

    public function medicalHistory()
    {
        return $this->belongsTo(MedicalHistory::class, 'medical_history_id', 'id');
    }

    public function operations()
    {
        return $this->hasMany(SurgicalOperation::class, 'migration_patient_id', 'id');
    }

    // Пересечение с отчетным периодом
    public function scopeDateRange($query, string $from, string $to)
    {
        return $query->where('ingoing_date', '<=', $to)
            ->where(function ($q) use ($from) {
                $q->whereNull('out_date')->orWhere('out_date', '>=', $from);
            });
    }

    // Фильтр по подразделению (получает ID отделений)
    public function scopeDepartment($query, int $departmentId)
    {
        $branchIds = DB::table('stt_stationarbranch')
            ->where('rf_DepartmentID', $departmentId)
            ->pluck('StationarBranchID');

        return $query->whereIn('stationar_branch_id', $branchIds);
    }

    // Добавляет вычисляемый столбец `category` (только для отображения)
    public function scopeWithCategory($query, string $from, string $to)
    {
        $sql = "CASE
            WHEN ingoing_date BETWEEN ? AND ? THEN 'admitted'
            WHEN out_date BETWEEN ? AND ? THEN
                CASE
                    WHEN death_date IS NOT NULL AND death_date BETWEEN ? AND ? THEN 'deceased'
                    WHEN stat_cure_result_id IN (3,4,7) THEN 'transferred'
                    ELSE 'discharged'
                END
            WHEN ingoing_date < ? AND (out_date IS NULL OR out_date > ?) THEN 'current'
            ELSE 'historical'
        END as category";

        return $query->selectRaw($sql, [$from, $to, $from, $to, $from, $to, $to, $to]);
    }

    // Быстрые фильтры по статусам (используют индексы MV, а не computed column)
    public function scopeAdmitted($query, string $from, string $to)
    {
        return $query->where('ingoing_date', '>', $from)
            ->where('ingoing_date', '<=', $to);
    }

    public function scopeDischarged($query, string $from, string $to)
    {
        return $query->where('out_date', '>', $from)
            ->where('out_date', '<=', $to)
            ->whereNotIn('visit_result_id', [3, 4, 5, 6])
            ->whereNull('death_date'); // умершие не считаются "выбывшими домой"
    }

    public function scopeTransferred($query, string $from, string $to)
    {
        return $query->where('out_date', '>', $from)
            ->where('out_date', '<=', $to)
            ->whereIn('visit_result_id', [3, 4]);
    }

    public function scopeDeceased($query, string $from, string $to)
    {
        return $query->whereNotNull('death_date')
            ->where('death_date', '>', $from)
            ->where('death_date', '<=', $to);
    }

    public function scopeCurrent($query, DateRange $dateRange)
    {
        return $query->where('is_actually_current', true);
    }

    public function scopeCurrentMigration($query, $historyId)
    {
        return $query->where('medical_history_id', $historyId)
            ->orderBy('ingoing_date', 'desc')
            ->limit(1)->first();
    }
}