<?php

namespace Webkul\Product\Http\Controllers;

use Exception;
use Illuminate\Support\Facades\Event;
use Illuminate\Support\Facades\Storage;
use Webkul\Admin\DataGrids\ProductDataGrid;
use Webkul\Attribute\Repositories\AttributeFamilyRepository;
use Webkul\Category\Repositories\CategoryRepository;
use Webkul\Core\Contracts\Validations\Slug;
use Webkul\Inventory\Repositories\InventorySourceRepository;
use Webkul\Product\Helpers\ProductType;
use Webkul\Product\Http\Requests\InventoryRequest;
use Webkul\Product\Http\Requests\ProductForm;
use Webkul\Product\Models\Product;
use Webkul\Product\Repositories\ProductAttributeValueRepository;
use Webkul\Product\Repositories\ProductDownloadableLinkRepository;
use Webkul\Product\Repositories\ProductDownloadableSampleRepository;
use Webkul\Product\Repositories\ProductInventoryRepository;
use Webkul\Product\Repositories\ProductRepository;

class ProductController extends Controller
{
    /**
     * Contains route related configuration.
     *
     * @var array
     */
    protected $_config;

    /**
     * Create a new controller instance.
     *
     * @param  \Webkul\Category\Repositories\CategoryRepository  $categoryRepository
     * @param  \Webkul\Product\Repositories\ProductRepository  $productRepository
     * @param  \Webkul\Product\Repositories\ProductDownloadableLinkRepository  $productDownloadableLinkRepository
     * @param  \Webkul\Product\Repositories\ProductDownloadableSampleRepository  $productDownloadableSampleRepository
     * @param  \Webkul\Attribute\Repositories\AttributeFamilyRepository  $attributeFamilyRepository
     * @param  \Webkul\Inventory\Repositories\InventorySourceRepository  $inventorySourceRepository
     * @param  \Webkul\Product\Repositories\ProductAttributeValueRepository  $productAttributeValueRepository
     * @return void
     */
    public function __construct(
        protected CategoryRepository $categoryRepository,
        protected ProductRepository $productRepository,
        protected ProductDownloadableLinkRepository $productDownloadableLinkRepository,
        protected ProductDownloadableSampleRepository $productDownloadableSampleRepository,
        protected AttributeFamilyRepository $attributeFamilyRepository,
        protected InventorySourceRepository $inventorySourceRepository,
        protected ProductAttributeValueRepository $productAttributeValueRepository,
        protected ProductInventoryRepository $productInventoryRepository
    )
    {
        $this->_config = request('_config');
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\View\View
     */
    public function index()
    {
        if (request()->ajax()) {
            return app(ProductDataGrid::class)->toJson();
        }

        return view($this->_config['view']);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\View\View
     */
    public function create()
    {
        $families = $this->attributeFamilyRepository->all();

        $configurableFamily = null;

        if ($familyId = request()->get('family')) {
            $configurableFamily = $this->attributeFamilyRepository->find($familyId);
        }

        return view($this->_config['view'], compact('families', 'configurableFamily'));
    }

    /**
     * Store a newly created resource in storage.
     *
     * @return \Illuminate\Http\Response
     */
    public function store()
    {
        if (
            ! request()->get('family')
            && ProductType::hasVariants(request()->input('type'))
            && request()->input('sku') != ''
        ) {
            return redirect(url()->current() . '?type=' . request()->input('type') . '&family=' . request()->input('attribute_family_id') . '&sku=' . request()->input('sku'));
        }

        if (
            ProductType::hasVariants(request()->input('type'))
            && (! request()->has('super_attributes')
                || ! count(request()->get('super_attributes')))
        ) {
            session()->flash('error', trans('admin::app.catalog.products.configurable-error'));

            return back();
        }

        $this->validate(request(), [
            'type'                => 'required',
            'attribute_family_id' => 'required',
            'sku'                 => ['required', 'unique:products,sku', new Slug],
        ]);

        Event::dispatch('catalog.product.create.before');

        $product = $this->productRepository->create(request()->all());

        Event::dispatch('catalog.product.create.after', $product);

        session()->flash('success', trans('admin::app.response.create-success', ['name' => 'Product']));

        return redirect()->route($this->_config['redirect'], ['id' => $product->id]);
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\View\View
     */
    public function edit($id)
    {
        $product = $this->productRepository->with(['variants', 'variants.inventories'])->findOrFail($id);

        $categories = $this->categoryRepository->getCategoryTree();

        $inventorySources = $this->inventorySourceRepository->findWhere(['status' => 1]);

        return view($this->_config['view'], compact('product', 'categories', 'inventorySources'));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Webkul\Product\Http\Requests\ProductForm  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(ProductForm $request, $id)
    {
        foreach (request()->images['files'] as $fileExists) {
            
            if (! $fileExists) {
                session()->flash('error', trans('admin::app.admin.system.image-required'));

                return redirect()->back();
            }
        }

        $this->productRepository->update(request()->all(), $id);

        Event::dispatch('catalog.product.update.before', $id);

        $product = $this->productRepository->update(request()->all(), $id);

        Event::dispatch('catalog.product.update.after', $product);

        session()->flash('success', trans('admin::app.response.update-success', ['name' => 'Product']));

        return redirect()->route($this->_config['redirect']);
    }

    /**
     * Update inventories.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function updateInventories(InventoryRequest $inventoryRequest, $id)
    {
        $product = $this->productRepository->findOrFail($id);

        $this->productInventoryRepository->saveInventories(request()->all(), $product);

        return response()->json([
            'message'      => __('admin::app.catalog.products.saved-inventory-message'),
            'updatedTotal' => $this->productInventoryRepository->where('product_id', $product->id)->sum('qty'),
        ]);
    }

    /**
     * Uploads downloadable file.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function uploadLink($id)
    {
        return response()->json(
            $this->productDownloadableLinkRepository->upload(request()->all(), $id)
        );
    }

    /**
     * Copy a given Product.
     *
     * @param  int  $productId
     * @return \Illuminate\Http\Response
     */
    public function copy(int $productId)
    {
        $originalProduct = $this->productRepository->findOrFail($productId);

        if (! $originalProduct->getTypeInstance()->canBeCopied()) {
            session()->flash(
                'error',
                trans('admin::app.response.product-can-not-be-copied', [
                    'type' => $originalProduct->type,
                ])
            );

            return redirect()->to(route('admin.catalog.products.index'));
        }

        if ($originalProduct->parent_id) {
            session()->flash(
                'error',
                trans('admin::app.catalog.products.variant-already-exist-message')
            );

            return redirect()->to(route('admin.catalog.products.index'));
        }

        $copiedProduct = $this->productRepository->copy($originalProduct);

        if (
            $copiedProduct instanceof Product
            && $copiedProduct->id
        ) {
            session()->flash('success', trans('admin::app.response.product-copied'));
        } else {
            session()->flash('error', trans('admin::app.response.error-while-copying'));
        }

        return redirect()->to(route('admin.catalog.products.edit', ['id' => $copiedProduct->id]));
    }

    /**
     * Uploads downloadable sample file.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function uploadSample($id)
    {
        return response()->json(
            $this->productDownloadableSampleRepository->upload(request()->all(), $id)
        );
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        $product = $this->productRepository->findOrFail($id);

        try {
            Event::dispatch('catalog.product.delete.before', $id);

            $this->productRepository->delete($id);

            Event::dispatch('catalog.product.delete.after', $id);

            return response()->json([
                'message' => trans('admin::app.response.delete-success', ['name' => 'Product']),
            ]);
        } catch (Exception $e) {
            report($e);
        }

        return response()->json([
            'message' => trans('admin::app.response.delete-failed', ['name' => 'Product']),
        ], 500);
    }

    /**
     * Mass delete the products.
     *
     * @return \Illuminate\Http\Response
     */
    public function massDestroy()
    {
        $productIds = explode(',', request()->input('indexes'));

        foreach ($productIds as $productId) {
            $product = $this->productRepository->find($productId);

            if (isset($product)) {
                Event::dispatch('catalog.product.delete.before', $productId);

                $this->productRepository->delete($productId);

                Event::dispatch('catalog.product.delete.after', $productId);
            }
        }

        session()->flash('success', trans('admin::app.catalog.products.mass-delete-success'));

        return redirect()->route($this->_config['redirect']);
    }

    /**
     * Mass update the products.
     *
     * @return \Illuminate\Http\Response
     */
    public function massUpdate()
    {
        $data = request()->all();

        if (! isset($data['massaction-type'])) {
            return redirect()->back();
        }

        if (! $data['massaction-type'] == 'update') {
            return redirect()->back();
        }

        $productIds = explode(',', $data['indexes']);

        foreach ($productIds as $productId) {
            Event::dispatch('catalog.product.update.before', $productId);

            $product = $this->productRepository->update([
                'channel' => null,
                'locale'  => null,
                'status'  => $data['update-options'],
            ], $productId);

            Event::dispatch('catalog.product.update.after', $product);
        }

        session()->flash('success', trans('admin::app.catalog.products.mass-update-success'));

        return redirect()->route($this->_config['redirect']);
    }

    /**
     * To be manually invoked when data is seeded into products.
     *
     * @return \Illuminate\Http\Response
     */
    public function sync()
    {
        Event::dispatch('products.datagrid.sync', true);

        return redirect()->route('admin.catalog.products.index');
    }

    /**
     * Result of search product.
     *
     * @return \Illuminate\View\View|\Illuminate\Http\Response
     */
    public function productLinkSearch()
    {
        if (request()->ajax()) {
            $results = [];

            foreach ($this->productRepository->searchProductByAttribute(request()->input('query')) as $row) {
                $results[] = [
                    'id'   => $row->product_id,
                    'sku'  => $row->sku,
                    'name' => $row->name,
                ];
            }

            return response()->json($results);
        } else {
            return view($this->_config['view']);
        }
    }

    /**
     * Download image or file.
     *
     * @param  int  $productId
     * @param  int  $attributeId
     * @return \Illuminate\Http\Response
     */
    public function download($productId, $attributeId)
    {
        $productAttribute = $this->productAttributeValueRepository->findOneWhere([
            'product_id'   => $productId,
            'attribute_id' => $attributeId,
        ]);

        return Storage::download($productAttribute['text_value']);
    }

    /**
     * Search simple products.
     *
     * @return \Illuminate\Http\Response
     */
    public function searchSimpleProducts()
    {
        return response()->json(
            $this->productRepository->searchSimpleProducts(request()->input('query'))
        );
    }
}