<?php


namespace App\Http\Controllers;


use App\Models\Category;
use App\Models\CategoryTranslation;
use App\Models\Product;
use App\Utility\CategoryUtility;
use Cache;
use Illuminate\Http\Request;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;


class CategoryController extends Controller {
    public function __construct() {
        // Staff Permission Check
        $this->middleware(['permission:view_product_categories'])->only('index');
        $this->middleware(['permission:add_product_category'])->only('create');
        $this->middleware(['permission:edit_product_category'])->only('edit');
        $this->middleware(['permission:delete_product_category'])->only('destroy');
    }
    public function index(Request $request) {
        $sort_search = null;
        $categories = Category::orderBy('order_level', 'desc');

        if ($request->has('search')) {
            $sort_search = $request->search;
            $categories = $categories->where('name', 'like', '%' . $sort_search . '%');
        }

        $categories = $categories->paginate(15);

        return view('backend.product.categories.index', compact('categories', 'sort_search'));
    }
    public function create() {
        $categories = Category::where('parent_id', 0)
            ->with('childrenCategories')
            ->get();

        return view('backend.product.categories.create', compact('categories'));

    }
    public function store(Request $request) {

        $category = new Category;
        $category->name = $request->name;
        $category->order_level = 0;

        if ($request->order_level != null) {
            $category->order_level = $request->order_level;
        }

        $category->digital = $request->digital;
        $category->banner = $request->banner;
        $category->icon = $request->icon;
        $category->cover_image = $request->cover_image;
        $category->meta_title = $request->meta_title;
        $category->meta_description = $request->meta_description;


        if ($request->parent_id != "0") {
            $category->parent_id = $request->parent_id;
            $parent = Category::find($request->parent_id);
            $category->level = $parent->level + 1;
        }

        if ($request->slug != null) {
            $category->slug = preg_replace('/[^A-Za-z0-9\-]/', '', str_replace(' ', '-', $request->slug));
        } else {
            $category->slug = preg_replace('/[^A-Za-z0-9\-]/', '', str_replace(' ', '-', $request->name)) . '-' . Str::random(5);
        }

        if ($request->commision_rate != null) {
            $category->commision_rate = $request->commision_rate;
        }

        $category->save();

        $category->attributes()->sync($request->filtering_attributes);

        $category_translation = CategoryTranslation::firstOrNew(['lang' => env('DEFAULT_LANGUAGE'), 'category_id' => $category->id]);
        $category_translation->name = $request->name;
        $category_translation->save();

        flash(translate('Category has been inserted successfully'))->success();

        return redirect()->route('categories.index');
    }
    public function edit(Request $request, $id) {
        $lang = $request->lang;
        $category = Category::findOrFail($id);

        $categories = Category::where('parent_id', 0)
            ->with('childrenCategories')
            ->whereNotIn('id', CategoryUtility::children_ids($category->id, true))->where('id', '!=', $category->id)
            ->orderBy('name', 'asc')
            ->get();

        return view('backend.product.categories.edit', compact('category', 'categories', 'lang'));
    }
    public function update(Request $request, $id) {

        $category = Category::findOrFail($id);

        if ($request->lang == env("DEFAULT_LANGUAGE")) {
            $category->name = $request->name;
        }

        if ($request->order_level != null) {
            $category->order_level = $request->order_level;
        }

        $category->digital = $request->digital;
        $category->banner = $request->banner;
        $category->icon = $request->icon;
        $category->cover_image = $request->cover_image;
        $category->meta_title = $request->meta_title;
        $category->meta_description = $request->meta_description;

        $previous_level = $category->level;

        if ($request->parent_id != "0") {
            $category->parent_id = $request->parent_id;
            $parent = Category::find($request->parent_id);
            $category->level = $parent->level + 1;
        } else {
            $category->parent_id = 0;
            $category->level = 0;
        }


        if ($category->level > $previous_level) {
            CategoryUtility::move_level_down($category->id);
        } elseif ($category->level < $previous_level) {
            CategoryUtility::move_level_up($category->id);
        }


        if ($request->slug != null) {
            $category->slug = strtolower($request->slug);
        } else {
            $category->slug = preg_replace('/[^A-Za-z0-9\-]/', '', str_replace(' ', '-', $request->name)) . '-' . Str::random(5);
        }


        if ($request->commision_rate != null) {
            $category->commision_rate = $request->commision_rate;
        }

        $category->save();

        $category->attributes()->sync($request->filtering_attributes);

        $category_translation = CategoryTranslation::firstOrNew(['lang' => $request->lang, 'category_id' => $category->id]);
        $category_translation->name = $request->name;
        $category_translation->save();

        Cache::forget('featured_categories');

        flash(translate('Category has been updated successfully'))->success();

        return back();
    }
    public function destroy($id){
        $category = Category::findOrFail($id);
        $category->attributes()->detach();

        // Category Translations Delete
        foreach ($category->category_translations as $key => $category_translation) {
            $category_translation->delete();
        }

        foreach (Product::where('category_id', $category->id)->get() as $product) {
            $product->category_id = null;
            $product->save();
        }

        CategoryUtility::delete_category($id);

        Cache::forget('featured_categories');

        flash(translate('Category has been deleted successfully'))->success();

        return redirect()->route('categories.index');
    }
    public function updateFeatured(Request $request) {
        $category = Category::findOrFail($request->id);
        $category->featured = $request->status;
        $category->save();

        Cache::forget('featured_categories');

        return 1;
    }
    public static function getCategoryWithChildrens( mixed $value = null, $withId = false ) : Collection {
        $names = [];

        if (!$value) {
            return Collection::make($names);
        }

        if($withId){
            $values = is_array($value) ? $value : [$value];
            $names = [];

            foreach ($values as $categoryName) {
                $category = Category::where('name', 'LIKE', "%$categoryName%")->first();

                if($category){
                    $children = $category->allChildren();
                    $names = array_merge($names, $children);
                }
            }

            return Collection::make($names);
        }

        $values = is_array($value) ? $value : [$value];

        foreach ($values as $categoryName) {
            $category = Category::where('name', 'LIKE', "%$categoryName%")->first();
            if (!$category) continue;
            $categoryNames = array_merge(
                [$category->name],
                $category->allChildrenNames()
            );
            $names = array_merge($names, $categoryNames);
        }

        return Collection::make($names);
    }
}