<?php

namespace Controllers;

use Libs\ResponseLib;
use Models\ProductModel;
use Psr\Http\Message\ServerRequestInterface;

class ProductController
{
    private ProductModel $model;

    public function __construct()
    {
        $this->model = new ProductModel();
    }

    public function __invoke(ServerRequestInterface $request)
    {
        $method = $request->getMethod();
        $body = json_decode((string)$request->getBody(), true) ?? [];

        $companyId = $body['company_id'] ?? null;

        if (!$companyId) {
            return ResponseLib::sendFail("Missing Company ID", [], "E_VALIDATE")->withStatus(401);
        }

        if ($method === 'GET') {
            $products = $this->model->getProducts($companyId);
            return ResponseLib::sendOk($products);
        }

        if ($method === 'POST') {
            // 1. Criar Produto
            if (isset($body['product_name'], $body['product_price'], $body['category_id'])) {
                $created = $this->model->createProduct(
                    $body['product_name'],
                    (float)$body['product_price'],
                    (int)$body['category_id'],
                    $companyId
                );
                return $created ? ResponseLib::sendOk(['created' => true]) : ResponseLib::sendFail("Failed to Create Product", [], "E_VALIDATE")->withStatus(402);
            }

            // 2. Deletar Produto (usando 'delete_product_id' para clareza)
            if (isset($body['delete_product_id'])) {
                $deleted = $this->model->deleteProduct((int)$body['delete_product_id'], $companyId);
                return $deleted ? ResponseLib::sendOk(['deleted' => true]) : ResponseLib::sendFail("Failed to Delete Product or Product Not Found", [], "E_VALIDATE")->withStatus(403);
            }

            // 3. Atualizar Produto (usando 'update_product_id')
            if (isset($body['update_product_id'])) {
                $productId = (int)$body['update_product_id'];
                $productName = $body['product_name'] ?? null;
                $productPrice = isset($body['product_price']) ? (float)$body['product_price'] : null;

                if ($productName === null && $productPrice === null) {
                    return ResponseLib::sendFail("Missing product_name or product_price for update", [], "E_VALIDATE")->withStatus(400);
                }

                $updated = $this->model->updateProduct(
                    $productId,
                    $companyId,
                    $productName,
                    $productPrice
                );
                return $updated ? ResponseLib::sendOk(['updated' => true]) : ResponseLib::sendFail("Failed to Update Product or Product Not Found", [], "E_VALIDATE")->withStatus(404);
            }

            // Se nenhuma das ações POST acima for reconhecida
            return ResponseLib::sendFail("Missing Data for Product POST action", [], "E_VALIDATE")->withStatus(405);
        }

        return ResponseLib::sendMethodNotAllowed(['GET', 'POST']);
    }
}