<?php

declare(strict_types=1);

namespace App\Queries\Discounts;

use App\Contracts\Query;
use App\Contracts\QueryInput;
use App\Dto\DiscountDto;
use App\Dto\DiscountProductDto;
use App\Models\Product;
use Domain\Enums\DiscountType;
use Webmozart\Assert\Assert;

/**
 * @implements \App\Contracts\Query<\App\Queries\Discounts\GetDiscountFormDataQueryInput, \App\Queries\Discounts\GetDiscountFormDataQueryOutput>
 */
final readonly class GetDiscountFormDataQuery implements Query
{
    /**
     * @param  \App\Queries\Discounts\GetDiscountFormDataQueryInput  $input
     */
    #[\Override]
    public function __invoke(QueryInput $input): GetDiscountFormDataQueryOutput
    {
        Assert::isInstanceOf($input, GetDiscountFormDataQueryInput::class);

        $discountTypes = DiscountType::cases();

        if ($input->discount !== null) {
            $selectedProds = Product::query()
                ->select(['id', 'name', 'picture'])
                ->where('discount_id', $input->discount->id)
                ->orderBy('name')
                ->get()
                ->map(fn (Product $p): DiscountProductDto => DiscountProductDto::fromModel($p));

            $existingProds = Product::query()
                ->select(['id', 'name', 'picture'])
                ->whereNotIn('id', $selectedProds->pluck('id'))
                ->orderBy('name')
                ->get()
                ->map(fn (Product $p): DiscountProductDto => DiscountProductDto::fromModel($p));

            $discountDto = DiscountDto::fromModel($input->discount);
        } else {
            $selectedProds = collect();
            $existingProds = Product::query()
                ->select(['id', 'name', 'picture'])
                ->orderBy('name')
                ->get()
                ->map(fn (Product $p): DiscountProductDto => DiscountProductDto::fromModel($p));

            $discountDto = null;
        }

        return new GetDiscountFormDataQueryOutput(
            discount: $discountDto,
            discountTypes: $discountTypes,
            existingProds: $existingProds,
            selectedProds: $selectedProds,
        );
    }
}