<?php
declare(strict_types=1);

namespace Esun\ImageManager\Controller\Adminhtml\Image;

use Esun\ImageManager\Model\CategoryFactory;
use Esun\ImageManager\Model\ImageFactory;
use Esun\ImageManager\Model\MediaUploader;
use Magento\Backend\App\Action;
use Magento\Framework\Exception\LocalizedException;

class Save extends Action
{
    public const ADMIN_RESOURCE = 'Esun_ImageManager::images_save';

    public function __construct(
        Action\Context $context,
        private readonly ImageFactory $imageFactory,
        private readonly CategoryFactory $categoryFactory,
        private readonly MediaUploader $mediaUploader
    ) {
        parent::__construct($context);
    }

    public function execute()
    {
        $id = (int) $this->getRequest()->getParam('image_id');
        $redirect = $this->resultRedirectFactory->create();
        $uploadedPaths = [];

        try {
            $image = $this->imageFactory->create();
            if ($id > 0) {
                $image->load($id);
                if (!$image->getId()) {
                    throw new LocalizedException(__('The image no longer exists.'));
                }
            }

            $title = trim((string) $this->getRequest()->getParam('title'));
            $categoryId = (int) $this->getRequest()->getParam('category_id');
            if ($title === '' || !$this->categoryFactory->create()->load($categoryId)->getId()) {
                throw new LocalizedException(__('Title and a valid category are required.'));
            }

            $oldPaths = [];
            foreach (['thumbnail', 'image', 'icon'] as $field) {
                $pathField = $field . '_path';
                $oldPaths[$field] = (string) $image->getData($pathField);
                $newPath = $this->mediaUploader->save($field);
                if ($newPath !== null) {
                    $uploadedPaths[$field] = $newPath;
                    $image->setData($pathField, $newPath);
                } elseif ($this->getRequest()->getParam('delete_' . $field)) {
                    $image->setData($pathField, '');
                }
            }

            $image->addData([
                'category_id' => $categoryId,
                'title' => $title,
                'description' => trim((string) $this->getRequest()->getParam('description')),
                'link_url' => trim((string) $this->getRequest()->getParam('link_url')),
                'status' => $this->getRequest()->getParam('status') === '0' ? 0 : 1,
                'sort_order' => (int) $this->getRequest()->getParam('sort_order'),
            ])->save();

            foreach ($oldPaths as $field => $oldPath) {
                $currentPath = (string) $image->getData($field . '_path');
                if ($oldPath !== '' && $oldPath !== $currentPath) {
                    $this->mediaUploader->delete($oldPath);
                }
            }

            $this->messageManager->addSuccessMessage(__('The image has been saved.'));
            return $redirect->setPath('esun_image_manager/image/index');
        } catch (\Throwable $e) {
            foreach ($uploadedPaths as $path) {
                $this->mediaUploader->delete($path);
            }
            $this->messageManager->addErrorMessage($e->getMessage());
            return $redirect->setPath(
                $id ? 'esun_image_manager/image/edit' : 'esun_image_manager/image/new',
                $id ? ['id' => $id] : []
            );
        }
    }
}