import { HttpClient, HttpHeaders } from "@angular/common/http";
import { Injectable } from "@angular/core";
import { Observable } from "rxjs";
import { map } from "rxjs/operators";
import { LoginRequest } from "../_models/dto/loginRequest";
import { UserDto } from "../_models/dto/userDto";
import { User } from "../_models/user";

@Injectable({
    providedIn: 'root'
})
export class UserService{

     headers = new HttpHeaders({
        'Content-Type': 'application/json',
        'Access-Control-Allow-Headers': 'Content-Type',

      });
    
    constructor(private httpClient: HttpClient){

    }

    registerUser(user : UserDto) : Observable<User>{
        let url = "http://localhost:8080/api/users/register";
        var reqHeader = new HttpHeaders({'No-Auth' : 'True'});
        return this.httpClient.post<User>(url, user, { headers: reqHeader });
    }
    
    authenticateUser(loginResult : LoginRequest) {
        let url = "http://localhost:8080/api/users/login";
        var reqHeader = new HttpHeaders({'Content-Type': 'application/json'});
        return this.httpClient.post<any>(url, loginResult)
        .pipe(
            map(userData => {
                sessionStorage.setItem("username", loginResult.username);
                let tokenStr =  userData.token;
                sessionStorage.setItem("token", tokenStr);
                return userData;
            })
        );
    }
  
      isUserLoggedIn() {
        let user = sessionStorage.getItem("username");
        let token = sessionStorage.getItem("token");
        console.log(user);
        console.log(token);
        console.log(!(user === null));
        return !(user === null);
      }
    
}