<?php

declare(strict_types=1);

namespace App\Controllers\Admin;

use App\Repositories\CategoryRepository;
use App\Repositories\ProductRepository;

final class ProductAdminController
{
    public function index(): void
    {
        $categoryRepository = new CategoryRepository();
        $productRepository = new ProductRepository();
        $message = null;
        $error = null;

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            try {
                $oldPackagePrice = $_POST['old_package_price'] !== '' ? (float) $_POST['old_package_price'] : null;
                $discountPercent = $_POST['discount_percent'] !== '' ? (float) $_POST['discount_percent'] : null;
                $packagePrice = (float) ($_POST['package_price'] ?? 0);
                $discountType = 'none';

                if ($oldPackagePrice !== null && $discountPercent !== null && $discountPercent > 0) {
                    $packagePrice = round($oldPackagePrice * (1 - ($discountPercent / 100)), 2);
                    $discountType = 'percent';
                } elseif ($oldPackagePrice !== null) {
                    $discountType = 'manual_old_price';
                }

                $productRepository->createWithVariant([
                    'category_id' => $_POST['category_id'] !== '' ? (int) $_POST['category_id'] : null,
                    'name' => trim((string) $_POST['name']),
                    'slug' => trim((string) $_POST['slug']),
                    'short_description' => trim((string) ($_POST['short_description'] ?? '')),
                    'seo_title' => trim((string) ($_POST['seo_title'] ?? '')),
                    'seo_description' => trim((string) ($_POST['seo_description'] ?? '')),
                    'seo_keywords' => trim((string) ($_POST['seo_keywords'] ?? '')),
                    'base_unit' => (string) ($_POST['base_unit'] ?? 'kg'),
                    'is_published' => isset($_POST['is_published']) ? 1 : 0,
                    'variant_name' => trim((string) ($_POST['variant_name'] ?? '')),
                    'package_quantity' => (float) ($_POST['package_quantity'] ?? 1),
                    'step_quantity' => (float) ($_POST['step_quantity'] ?? 1),
                    'price_per_unit' => $_POST['price_per_unit'] !== '' ? (float) $_POST['price_per_unit'] : null,
                    'package_price' => $packagePrice,
                    'old_package_price' => $oldPackagePrice,
                    'discount_type' => $discountType,
                    'discount_percent' => $discountPercent,
                ]);
                $message = 'Товар добавлен.';
            } catch (\Throwable $exception) {
                $error = app_env('APP_DEBUG', 'false') === 'true' ? $exception->getMessage() : 'Не удалось добавить товар.';
            }
        }

        view('admin/products', [
            'title' => 'Товары - админка Рыбсток',
            'breadcrumbs' => [
                ['title' => 'Главная', 'url' => '/'],
                ['title' => 'Админка', 'url' => '/admin/'],
                ['title' => 'Товары'],
            ],
            'categories' => $categoryRepository->flatActive(),
            'products' => $productRepository->adminLatest(30),
            'message' => $message,
            'error' => $error,
        ]);
    }
}