import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router, ActivatedRoute } from '@angular/router';
import { PublicService } from '../PublicService';
import { JwtHelperService } from '@auth0/angular-jwt';
import { Constants } from '../Constant';
import { LoginService } from '../login/login.service';

@Injectable({
  providedIn: 'root'
})
export class AuthGuard implements CanActivate {
  private exp;
  private token;
  private user;
  public constructor(
      private readonly router: Router,
      private readonly route: ActivatedRoute,
      private readonly publicService: PublicService,
      private readonly loginService: LoginService,
      private readonly jwt: JwtHelperService
  ) {}

  public canActivate(
      next: ActivatedRouteSnapshot,
      state: RouterStateSnapshot
  ): boolean {
    this.token = this.publicService.getToken();
    this.user = this.publicService.getCurrentUser();
    if (this.token) {
      this.exp = (this.jwt.decodeToken(this.publicService.getToken())).exp;
      const nowTime = new Date().getTime() / 1000;
      if (nowTime > this.exp){
        if (this.user.userConfig.isAutoLogin === '1'){
          this.loginService.login(this.user.userName, this.user.passWord).then(res => {
            if (res.code === Constants.SUCCESS){
              this.publicService.setToken(res.data);
            }
            console.log(res);
          });
          return true;
        }else{
          return false;
        }
      }else{
        return true;
      }
    }else{
      this.router.navigate(['/login']);
      return false;
    }
  }
}