<?php

namespace Hillpy\PHPTools\Cache;

use Hillpy\PHPTools\Cache\Interfaces\CacheInterface;
use Hillpy\PHPTools\Cache\Traits\FileTrait;
use Hillpy\PHPTools\Cache\Traits\MemcachedTrait;
use Hillpy\PHPTools\Cache\Traits\RedisTrait;
use Hillpy\PHPTools\Common\Common;

class Cache implements CacheInterface
{
 use FileTrait,
 MemcachedTrait,
 RedisTrait;

 // Cache类实例
 private static $instance;

 // 配置参数
 private $options = [
 'driver' => 'file',
 'prefix' => 'cache_',
 'key' => 'cache',
 'expire' => 3600,
 'file_base_path' => '',
 'file_path' => '/cache',
 'file_ext' => 'php',
 'host' => '127.0.0.1',
 'port' => '',
 ];

 /**
 * 允许使用的驱动类型
 *
 * @var array
 */
 private $allowDriver = [
 'file',
 'redis',
 'memcached',
 ];

 /**
 * 驱动trait数组
 *
 * @var array
 */
 private $driverTraitArr = [
 'file' => FileTrait::class,
 'redis' => RedisTrait::class,
 'memcached' => MemcachedTrait::class,
 ];

 // 驱动trait
 private $driver;

 /**
 * 允许传入的文件扩展
 *
 * @var array
 */
 private $allowFileExt = [
 'php',
 'json',
 ];

 /**
 * 默认缓存端口
 *
 * @var array
 */
 private $defaultPort = [
 'redis' => 6379,
 'memcached' => 11211,
 ];

 public static function getInstance($options = [])
 {
 if (is_null(self::$instance) || 1) {
 self::$instance = new self($options);
 } else {
 self::$instance->init($options);
 }

 return self::$instance;
 }

 private function __construct($options = [])
 {
 $this->init($options);
 }

 private function __clone()
 {
 }

 private function init($options = [])
 {
 if (
 is_array($options) &&
 count($options) > 0
 ) {
 $this->options = Common::updateArrayData($this->options, $options);
 }
 in_array($this->options['file_ext'], $this->allowFileExt) || $this->options['file_ext'] = 'php';
 in_array($this->options['driver'], $this->allowDriver) || $this->options['driver'] = 'file';
 $this->options['port'] || (isset($this->defaultPort[$this->options['driver']]) && $this->options['port'] = $this->defaultPort[$this->options['driver']]);

 $this->driver = $this->driverTraitArr[$this->options['driver']];
 $this->driver::init($this->options);
 }

 public function setOptions($options = [])
 {
 if (
 is_array($options) &&
 count($options) > 0
 ) {
 $this->options = Common::updateArrayData($this->options, $options);
 }

 return $this;
 }

 public function getOptions()
 {
 return $this->options;
 }

 public function set($key = '', $value = '', $expire = '')
 {
 return $this->driver::set($key, $value, $expire);
 }

 public function get($key = '')
 {
 return $this->driver::get($key);
 }

 public function delete($key = '')
 {
 return $this->driver::delete($key);
 }

 public function clear()
 {
 return $this->driver::clear();
 }
}