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package com.litongjava.tio.http.common.session;

import java.io.Serializable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.litongjava.tio.http.common.HttpConfig;
import com.litongjava.tio.utils.SystemTimer;
import com.litongjava.tio.utils.json.JsonUtils;

/**
 *
 * @author tanyaowu
 * 2017年8月5日 上午10:16:26
 */
public class HttpSession implements java.io.Serializable {
  private static Logger log = LoggerFactory.getLogger(HttpSession.class);

  private static final long serialVersionUID = 6077020620501316538L;

  private Map data = new ConcurrentHashMap<>();

  private String id = null;

  private long createTime = SystemTimer.currTime;

  /**
   * 此处空的构造函数必须要有
   * 
   * @author: tanyaowu
   */
  public HttpSession() {
  }

  /**
   * @author tanyaowu
   */
  public HttpSession(String id) {
    this.id = id;
  }

  /**
   * 清空所有属性
   * @param httpConfig
   * @author tanyaowu
   */
  public void clear(HttpConfig httpConfig) {
    data.clear();
    update(httpConfig);
  }

  /**
   * 获取会话属性
   * @param key
   * @return
   * @author tanyaowu
   */
  public Object getAttribute(String key) {
    return data.get(key);
  }

  /**
   * 
   * @param key
   * @param clazz
   * @return
   * @author: tanyaowu
   */
  @SuppressWarnings("unchecked")
  public  T getAttribute(String key, Class clazz) {
    return (T) data.get(key);
  }

  @SuppressWarnings("unchecked")
  public  T getAttribute(String key, Class clazz, T defaultObj, HttpConfig httpConfig) {
    T t = (T) data.get(key);
    if (t == null) {
      log.warn("key【{}】'value in session is null", key);
      if (defaultObj != null) {
        setAttribute(key, defaultObj, httpConfig);
      }
      return defaultObj;
    }
    return t;
  }

  // public Map getData() {
  // return data;
  // }

  public String getId() {
    return id;
  }

  /**
   *
   * @param key
   * @param httpConfig
   * @author tanyaowu
   */
  public void removeAttribute(String key, HttpConfig httpConfig) {
    data.remove(key);
    update(httpConfig);
  }

  /**
   * 设置会话属性
   * @param key
   * @param value
   * @param httpConfig
   * @author tanyaowu
   */
  public void setAttribute(String key, Serializable value, HttpConfig httpConfig) {
    String jsonValue = JsonUtils.toJson(value);
    data.put(key, jsonValue);
    update(httpConfig);
  }

  public void update(HttpConfig httpConfig) {
    httpConfig.getSessionStore().put(id, this);
  }

  public void setId(String id) {
    this.id = id;
  }

  public long getCreateTime() {
    return createTime;
  }

  public void setCreateTime(long createTime) {
    this.createTime = createTime;
  }
}