<?php

namespace App\Cache\Redis\Api;

use App\Cache\Redis\RedisCache;
use Hyperf\Di\Annotation\Inject;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\NotFoundExceptionInterface;

class EvaluationCache
{
    /**
     * @var RedisCache
     */
    #[Inject]
    protected RedisCache $redis;

    /**
     * @param int $chefId
     * @param int $score
     * @return void
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    public function addChefEvaluation(int $chefId,int $score): void
    {
        $key = ApiRedisKey::chefEvaluationKey($chefId);

        $this->redis->hIncrBy($key, 'total_score', $score);
        $this->redis->hIncrBy($key, 'total_count', 1);
    }

    /**
     * @param int $chefId
     * @return float|int
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    public function getChefEvaluation(int $chefId): float|int
    {
        $key = ApiRedisKey::chefEvaluationKey($chefId);

        $totalScore = $this->redis->hGet($key, 'total_score');
        $totalCount = $this->redis->hGet($key, 'total_count');

        if (empty($totalScore) || empty($totalCount)) return 0;

        $avgScore = $totalScore / $totalCount;

        if ($avgScore < 4) {
            $normalized = $avgScore / 4;
            $avgScore = 4 + 1 - exp(-2 * $normalized);
        }

        return round($avgScore,1);
    }
}