import { Injectable } from '@angular/core';
import { StorageService } from './storage.service';
import { Router } from '@angular/router';
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
import { User, UserForm } from '../models/user.model';
import { environment } from 'src/environments/environment';
import { HttpService } from './http.service';
import { BehaviorSubject, Observable } from 'rxjs';
import { AuthConnstants } from '../config/auth-constants';
import { AlertController } from '@ionic/angular';

@Injectable({
  providedIn: 'root'
})
export class AuthService {
  userData$ = new BehaviorSubject<any>('');
  userId$ = new BehaviorSubject<any>('');
  headers: HttpHeaders;
  public ValidatedUser:User;
  public ValidatedUserChat:any;
  opts:any;

  constructor(
    private http: HttpClient,
    private httpService: HttpService,
    private storageService:StorageService,
    private router:Router,
    public alertController: AlertController,
    ) { 

      this.headers = new HttpHeaders();

      if (localStorage.getItem("user") != null) {
        this.ValidatedUser = JSON.parse(localStorage.getItem('user'));
      }
      if (localStorage.getItem("userChat") != null) {
        this.ValidatedUserChat = JSON.parse(localStorage.getItem('userChat'));
      }

    }
    

    async login(user: UserForm): Promise<boolean> {
      //user.BasicAuthKey = 'Basic ' + btoa(user.username + '@' + user.domainName + ':' + user.password);
      user.BasicAuthKey = 'Basic ' + btoa(user.username + ':' + user.password); //conversão em base64 das credenciais inseridas


      const options = { headers: {'Authorization': user.BasicAuthKey }};
      this.headers = this.headers.set('Authorization',user.BasicAuthKey);
      this.opts = {
        headers: this.headers,
      }
      const service = environment.apiURL + "userauthentication/GetValidateAuth";
      
      let result: boolean | PromiseLike<boolean> = false;
      let response: any;

      try {
        response = await this.http.post<User>(environment.apiURL + "UserAuthentication/Login", '', this.opts).toPromise();

        console.log(response);

        if (response) {
          if( response.RoleID == 100000014) {
            response.Profile = 'PR'
          } else if(response.RoleID == 100000011) {
            response.Profile = 'MDGPR'
          }
          response.BasicAuthKey = user.BasicAuthKey
          this.ValidatedUser = response;

          localStorage.setItem('user', JSON.stringify(response));

          this.storageService.store(AuthConnstants.USER, response);

          return true;
        }
        
      } catch (error) {
        return false;
      }
      
    }

    logout(){
      this.ValidatedUser = null;
    }

    //Login to rocketChat server
    async loginChat(user: UserForm): Promise<boolean> {
      let postData = {
        "user": user.username,
        "password": user.password,
      }

      let responseChat = await this.httpService.post('login', postData).toPromise();
      if(responseChat){
        console.log('Login to Rocket chat OK');
        this.ValidatedUserChat = responseChat;
        localStorage.setItem('userChat', JSON.stringify(responseChat));
        this.storageService.store(AuthConnstants.AUTH, responseChat);
        return true;
      }
      else{
        console.log('Network error');
        this.presentAlert('Network error');
        return false;
      }
    }




    //Get user data from RocketChat | global object
    getUserData(){
      this.storageService.get(AuthConnstants.AUTH).then(res=>{
        this.userData$.next(res);
      });
    }
    //Get user Id | global object
    getUserId(){
      /* this.storageService.get(AuthConnstants.USER).then(res=>{
        this.userId$.next(res);
      }); */
    }

    getProfile(){
    /* this.storageService.get(AuthConnstants.PROFILE).then(res=>{
      return res;
    }); */
  }

    logoutChat(){
      //this.storageService.clear();
      /* this.storageService.removeStorageItem(AuthConnstants.AUTH).then(res =>{
        this.userData$.next('');
        this.router.navigate(['']);
      }) */

    }
    async presentAlert(message: string) {
      const alert = await this.alertController.create({
        cssClass: 'my-custom-class',
        header: 'Mensagem do sistema',
        message: message,
        buttons: ['OK']
      });
  
      await alert.present();
    }
}