<?php

namespace App\Services;

use App\Managers\AuthorsManager;
use App\Models\Author;
use Exception;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Pagination\LengthAwarePaginator;


use Illuminate\Support\Facades\Cache;


/**
 * Class SearchesCacheService
 * @package App\Services
 */
class SearchesCacheService
{
    /** in minutes */
    const USER_DATA_CACHE_TIME = 5;

    /** in minutes */
    const GENERAL_DATA_CACHE_TIME = 30;

    /**
     * @return mixed
     */
    public function getUsersOrderCnt()
    {
        return $this->getData(
            $this->generateKey('users_order_cnt'),
            function () {
                return app(OrdersService::class)->getUsersOrderCnt(auth()->id());
            }
        );
    }

    /**
     * @return mixed
     */
    public function getActiveRestaurants()
    {
        return $this->getData(
            $this->generateKey('active_restaurants'),
            function () {
                return app(KitchenService::class)->getActiveRestaurants();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getCuisines()
    {
        return $this->getData(
            $this->generateKey('cuisines'),
            function () {
                return app(CuisinesService::class)->getAllTransformed();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getSideCuisines()
    {
        return $this->getData(
            $this->generateKey('side_cuisines'),
            function () {
                return app(CuisinesService::class)->getSideCuisines();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getCloudChef()
    {
        return $this->getData(
            $this->generateKey('cloud_chef'),
            function () {
                return app(AuthorsService::class)->getList();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getNewKitchens()
    {
        return $this->getData(
            $this->generateKey('new_kitchens'),
            function () {
                return app(KitchenService::class)->getNewKitchensTransformed();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getTopRatedKitchens()
    {
        return $this->getData(
            $this->generateKey('top_rated_kitchens'),
            function () {
                return app(KitchenService::class)->getTopKitchensArray();
            },
            self::GENERAL_DATA_CACHE_TIME
        );
    }

    /**
     * @return mixed
     */
    public function getNearYouKitchens()
    {
        return $this->getData(
            $this->generateKey('near_you_kitchens'),
            function () {
                return app(KitchenService::class)->nearList();
            }
        );
    }


    /**
     * @return mixed
     */
    public function getFavoriteKitchens()
    {
        return $this->getData(
            $this->generateKey('favorite_kitchens'),
            function () {
                return app(KitchenService::class)->getFavoriteUsersRestaurantsArray(auth()->user());
            }
        );
    }

    /**
     * @return mixed
     */
    public function getLastOrders()
    {
        return $this->getData(
            $this->generateKey('last_orders'),
            function () {
                return (auth()->id()) ? app(OrdersService::class)->getLastUsersOrdersList(auth()->id()) : null;
            }
        );
    }


    /**
     * @param string $key
     * @param $data
     * @param int $ttl
     */
    private function cachedData(string $key, $data, int $ttl)
    {
        Cache::add($key, $data, now()->addMinutes($ttl));
    }

    /**
     * @param string $key
     * @param callable $dataCallback
     * @param int $ttl
     * @return mixed
     */
    private function getData(string $key, callable $dataCallback, $ttl = self::USER_DATA_CACHE_TIME)
    {

        if ($this->hasData($key)) {
            return Cache::get($key);
        }

        $data = $dataCallback();
        $this->cachedData($key, $data, $ttl);

        return $data;
    }

    /**
     * @param $key
     * @return bool
     */
    private function hasData(string $key): bool
    {
        return Cache::has($key);
    }

    /**
     * @param $prefix
     * @return string
     */
    private function generateKey(string $prefix): string
    {
        return sprintf('%s_%s_for_uid_%s', class_basename(self::class), $prefix, auth()->id());
    }
}