import _ from 'lodash';
import {encode} from 'querystring';
import Cookies from 'js-cookie';

import Auth from '../api/auth';

export default class Session{
  constructor(session){
    if(typeof session != 'undefined'){
      this.updateSession(session);
    }else{
      this.restoreSession();
    }
    
    this.sessionPath = '/';
  }

  registerUpdate(){
    this.updatedAt = new Date();
  }

  isAuthenticate(){
    return this.accessToken != undefined;
  }

  isAdmin(){
    return this.isAuthenticate() && this.userProfile == 'admin';
  }

  getToken(){
    return this.accessToken;
  }
  
  getTokenType(){
    return this.accessTokenType;
  }

  getClient(){
    return this.client;
  }

  getExpiry(){
    return this.expiry;
  }
  
  getUid(){
    return this.uid;
  }

  applySessionHeader(headers){
    if(this.accessToken){
      return _.merge(this.session, headers);
    }else{
      return headers;
    }
  }

  updateSession(session){
    this.clearCookies();
    this.session = session;
    this.accessToken = session["access-token"];
    this.tokenType = session["token-type"];
    this.client = session["client"];
    this.expiry = session["expiry"];
    this.uid = session["uid"];
    this.storeCookies();
    this.validateSession();
  }

  validateSession(){
    if(this.isAuthenticate() && (typeof this.updatedAt == 'undefined' || this.updatedAt - new Date() > 1500)){
      this.registerUpdate();

      new Auth().verifyToken((success)=>{
        // console.log("Token Verification", success);

        if(success['success'] == true){
          this.registerUpdate();
          this.userProfile = success.data.profile;
        }else{
          this.removeCookies();
        }
      }, (error)=>{
        if(error['success'] == true){
          this.registerUpdate();
          this.userProfile = success.data.profile;
        }else{
          this.removeCookies();
        }
      });      
    }
  }

  restoreSession(){
    this.accessToken = Cookies.get("access-token", {path: this.sessionPath});
    this.tokenType = Cookies.get("token-type", {path: this.sessionPath});
    this.client = Cookies.get("client", {path: this.sessionPath});
    this.expiry = Cookies.get("expiry", {path: this.sessionPath});
    this.uid = Cookies.get("uid", {path: this.sessionPath});
    
    this.session = {
      "access-token": this.accessToken,
      "token-type": this.tokenType,
      "client": this.client,
      "expiry": this.expiry,
      "uid": this.uid,
    };
  }

  storeCookies(){
    Cookies.set("access-token", this.accessToken, {path: this.sessionPath});
    Cookies.set("token-type", this.tokenType, {path: this.sessionPath});
    Cookies.set("client", this.client, {path: this.sessionPath});
    Cookies.set("expiry", this.expiry, {path: this.sessionPath});
    Cookies.set("uid", this.uid, {path: this.sessionPath});
  }

  clearCookies(){
    Cookies.remove("access-token", {path: this.sessionPath});
    Cookies.remove("token-type", {path: this.sessionPath});
    Cookies.remove("client", {path: this.sessionPath});
    Cookies.remove("expiry", {path: this.sessionPath});
    Cookies.remove("uid", {path: this.sessionPath});
    this.accessToken = undefined;
    this.tokenType = undefined;
    this.client = undefined;
    this.expiry = undefined;
    this.uid = undefined;
    this.session = {};
  }

  removeCookies(){
    this.clearCookies();
    window.location.href = '/';
    // window.location.reload();
  }
}