<?php

namespace App\Http\Controllers\Admin;

use App\Helpers\Helper;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use App\ProductCategory;
use App\Http\Resources\Admin\ProductCategoryResource;
use Validator;

/**
 * Class ProductCategoryController
 *
 * @package App\Http\Controllers
 */
class ProductCategoryController extends Controller
{
    const ITEM_PER_PAGE = 100;

    public function index(Request $request)
    {
        $searchParams = $request->all();
        $list = ProductCategory::notDeleted();
        $limit = Arr::get($searchParams, 'limit', static::ITEM_PER_PAGE);
        $keyword = Arr::get($searchParams, 'keyword', '');
        $status = Arr::get($searchParams, 'status', '');

        if (!empty($keyword)) {
            $list->where('name', 'LIKE', '%' . $keyword . '%');
        }
        if ($status != '') {
            $list->where('is_activated', $status);
        }
        $list->orderBy('id');

        return ProductCategoryResource::collection($list->paginate($limit));
    }

    public function all(Request $request)
    {
        $searchParams = $request->all();
        $limit = Arr::get($searchParams, 'limit', static::ITEM_PER_PAGE);
        $list = ProductCategory::select('id', 'name', 'slug')->notDeleted()->orderBy('id');

        return ProductCategoryResource::collection($list->paginate($limit));
    }

    public function available()
    {
        $list = ProductCategory::select('id', 'name')->notDeleted()->isPublished()->orderBy('id');

        return ProductCategoryResource::collection($list->get());
    }

    public function nested(Request $request)
    {
        $params = $request->all();
        $ignore = Arr::get($params, 'ignore', '');

        $list = ProductCategory::select('id', 'name as label', 'id as value', 'parent_id')->notDeleted();
        if ($ignore !== null && $ignore !== "") $list->where('id', '!=', $ignore);
        $list->orderBy('id');
        $rs = $this->getChildItems($list->get(), 0);

        return response()->json(['data' => $rs], 200);
    }

    private function getChildItems($list, $parent = 0)
    {
        $rs = [];
        foreach ($list as $item) {
            if ($item->parent_id == $parent) {
                $child = $this->getChildItems($list, $item->id);
                if (count($child) > 0) $item['children'] = $child;
                $rs[] = $item;
            }
        }

        return $rs;
    }


    public function show($id = 0)
    {
        $category = ProductCategory::notDeleted()->where('id', $id)->first();
        if (!isset($category)) return response()->json(['errors' => 'Category is not valid'], 403);

        return new ProductCategoryResource($category);
    }

    public function store(Request $request)
    {
        $validator = Validator::make($request->all(), ['name' => ['required'], 'is_activated' => ['required']]);
        if ($validator->fails()) return response()->json(['errors' => $validator->errors()], 403);
        $params = $request->all();
        $slug = $params['slug'];
        if ($slug == null || $slug == "") $slug = Helper::slug($params['name']);
        if ($params['parent_id'] == null || $params['parent_id'] == "") $params['parent_id'] = 0;

        $category = ProductCategory::create([
            'name'         => $params['name'],
            'slug'         => $slug,
            'parent_id'    => $params['parent_id'],
            'description'  => $params['description'],
            'is_activated' => ($params['is_activated'] === true) ? 1 : 0,
            'created_at'   => date('Y-m-d H:i:s'),
            'updated_at'   => date('Y-m-d H:i:s')
        ]);

        return new ProductCategoryResource($category);
    }

    public function update($id = 0, Request $request)
    {
        $validator = Validator::make($request->all(), ['name' => ['required'], 'is_activated' => ['required']]);
        if ($validator->fails()) return response()->json(['errors' => $validator->errors()], 403);
        $category = ProductCategory::notDeleted()->where('id', $id)->first();
        if (!isset($category)) return response()->json(['errors' => 'Category is not valid'], 403);
        $params = $request->all();
        $slug = $params['slug'];
        if ($slug == null || $slug == "") $slug = Helper::slug($params['name']);
        if ($params['parent_id'] == null || $params['parent_id'] == "") $params['parent_id'] = 0;

        $category->update([
            'name'         => $params['name'],
            'slug'         => $slug,
            'parent_id'    => $params['parent_id'],
            'description'  => $params['description'],
            'is_activated' => ($params['is_activated'] === true) ? 1 : 0,
            'updated_at'   => date('Y-m-d H:i:s')
        ]);

        return response()->json(null, 204);
    }

    public function destroy($id = 0)
    {
        $category = ProductCategory::notDeleted()->where('id', $id)->first();
        if (!isset($category)) response()->json(['error' => 'Ehhh! Can not delete this category'], 403);

        try {
            $category->update(['is_deleted' => true]);
        } catch (\Exception $ex) {
            response()->json(['error' => $ex->getMessage()], 403);
        }

        return response()->json(null, 204);
    }

    public function destroyMultiple(Request $request) {
        $validator = Validator::make($request->all(), ['ids' => 'required']);
        if ($validator->fails()) return response()->json(['errors' => $validator->errors()], 403);
        $listIds = $request->get('ids', []);
        $categories = ProductCategory::notDeleted()->whereIn('id', $listIds)->get();
        if ($categories->count() <= 0) response()->json(['error' => 'Category is not valid.'], 403);
        try {
            ProductCategory::notDeleted()->whereIn('id', $listIds)->update(['is_deleted' => true]);
        } catch (\Exception $ex) {
            response()->json(['error' => $ex->getMessage()], 403);
        }

        return response()->json(null, 204);
    }

    public function activateMultiple(Request $request) {
        $validator = Validator::make($request->all(), ['ids' => 'required']);
        if ($validator->fails()) return response()->json(['errors' => $validator->errors()], 403);
        $listIds = $request->get('ids', []);
        $categories = ProductCategory::notDeleted()->whereIn('id', $listIds)->get();
        if ($categories->count() <= 0) response()->json(['error' => 'Category is not valid.'], 403);
        try {
            ProductCategory::notDeleted()->whereIn('id', $listIds)->update(['is_activated' => true]);
        } catch (\Exception $ex) {
            response()->json(['error' => $ex->getMessage()], 403);
        }

        return response()->json(null, 204);
    }

    public function deactivateMultiple(Request $request) {
        $validator = Validator::make($request->all(), ['ids' => 'required']);
        if ($validator->fails()) return response()->json(['errors' => $validator->errors()], 403);
        $listIds = $request->get('ids', []);
        $categories = ProductCategory::notDeleted()->whereIn('id', $listIds)->get();
        if ($categories->count() <= 0) response()->json(['error' => 'Category is not valid.'], 403);
        try {
            ProductCategory::notDeleted()->whereIn('id', $listIds)->update(['is_activated' => false]);
        } catch (\Exception $ex) {
            response()->json(['error' => $ex->getMessage()], 403);
        }

        return response()->json(null, 204);
    }
}