<?php

namespace App\Service;

use Predis\Client as PredisClient;

class RedisClientProvider
{
    protected $redis;
    protected $scheme;
    protected $host;
    protected $port;
    protected $password;

    public function __construct($scheme, $host, $port, $password)
    {
        $this->scheme = $scheme;
        $this->host = $host;
        $this->port = $port;
        $this->password = $password;
        $this->redis = null;

        $this->connect();
    }

    protected function connect()
    {
        // already connected
        if ($this->redis != null)
            return $this->redis;
            
        // if password is specified attempt connection
        if (strlen($this->password) > 0)
        {
            $this->redis = new PredisClient([
                "scheme" => $this->scheme,
                "host" => $this->host,
                "port" => $this->port,
                "password" => $this->password]);

            return $this->redis;
        }

        $this->redis = new PredisClient([
            "scheme" => $this->scheme,
            "host" => $this->host, 
            "port" => $this->port]);

        return $this->redis;
    }

    public function getRedisClient()
    {
        return $this->redis;
    }
}