<?php

namespace App\Http\Resources;

use App\Models\ClassPackageUnitVariation;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
use Illuminate\Http\Resources\Json\JsonResource;

class ClassPackageUnitVariationResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        return [
            'id'                        => $this->id,
            'class_package_unit_id'     => $this->class_package_unit_id,
            'type'                      => $this->type,
            'register_value'            => (float) $this->register_value,
            'register_installments_min' => $this->register_installments_min,
            'register_installments_max' => $this->register_installments_max,
            'package_value'             => (float) $this->package_value,
            'package_installments_min'  => $this->package_installments_min,
            'package_installments_max'  => $this->package_installments_max,
            'discount_value'            => $this->discount_value !== null ? (float) $this->discount_value : null,
            'material_value'            => (float) $this->material_value,
            'material_installments_min' => $this->material_installments_min,
            'material_installments_max' => $this->material_installments_max,
            'total_value'               => $this->totalValue(),
            'created_at'                => Carbon::parse($this->created_at)->format('Y-m-d H:i:s'),
            'updated_at'                => Carbon::parse($this->updated_at)->format('Y-m-d H:i:s'),

            // Relationships

            'materials' => $this->whenLoaded('products', fn () =>
                $this->products->map(fn ($material) => [
                    'product_id' => $material->product_id,
                    'name'       => $material->product?->name,
                    'quantity'   => $material->quantity,
                    'price'      => (float) $material->price,
                ])->values()
            ),
        ];
    }

    /**
     * @param \Illuminate\Database\Eloquent\Collection<ClassPackageUnitVariation> $resource
     * @return \Illuminate\Http\Resources\Json\AnonymousResourceCollection<ClassPackageUnitVariationResource>
     */
    public static function collection($resource): AnonymousResourceCollection
    {
        return parent::collection($resource);
    }
}