<?php

namespace App\Services\Setting;

use App\Models\ReferenceUnit;
use App\Models\ReferenceUnitConversion;
use App\Services\SigdCrudService;
use Illuminate\Support\Facades\DB;

class UnitConversionService extends SigdCrudService
{
    public function __construct(ReferenceUnitConversion $model)
    {
        parent::__construct($model);
    }

    public function getCategories()
    {
        return ReferenceUnit::distinct()->rowActive()->pluck('category');
    }

    public function getUnitsByCategory($category)
    {
        return ReferenceUnit::where('category', $category)->rowActive()->orderByRowNum()->get();
    }

    public function getConversionsByCategory($category)
    {
        return ReferenceUnitConversion::where('category', $category)
            ->rowActive()->get()
            ->groupBy('from_unit_code')->map(function ($item) {
                return $item->keyBy('to_unit_code');
            });
    }

    public function save($category, array $conversions)
    {
        DB::transaction(function () use ($category, $conversions) {
            foreach ($conversions as $fromUnitCode => $values) {
                foreach ($values as $toUnitCode => $value) {
                    $isExist = ReferenceUnitConversion::where('category', $category)
                        ->where('from_unit_code', $fromUnitCode)
                        ->where('to_unit_code', $toUnitCode)
                        ->rowActive()
                        ->first();

                    if (!empty($value)) {
                        $newValue = getOriginalValue($value);
                        if ($isExist) {
                            $oldValue = (float) rtrim(rtrim($isExist->value, '0'), ',');
                            if ($oldValue != $newValue) {
                                $this->update($isExist, ['value' => $newValue]);
                            }
                        } else {
                            // Create new record
                            $this->create([
                                'category' => $category,
                                'from_unit_code' => $fromUnitCode,
                                'to_unit_code' => $toUnitCode,
                                'value' => $newValue,
                            ]);
                        }
                    } else {
                        if ($isExist) {
                            $this->delete($isExist);
                        }
                    }
                }
            }
        });
    }
}