import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';
import firebase from 'firebase'
/*
  Generated class for the UsersService provider.

  See https://angular.io/docs/ts/latest/guide/dependency-injection.html
  for more info on providers and Angular 2 DI.
*/
@Injectable()
export class UsersService {

  private data:any;
  public fireAuth:any;
  public userProfile:any;



  constructor(public http: Http) {
    this.fireAuth=firebase.auth();
    this.userProfile=firebase.database().ref('users')
  }

  loadUser(number){
    if(this.data){
      return Promise.resolve(this.data);
    }
    return new Promise(resolve=>{
      this.http.get('https://randomuser.me/api/?results='+number)
          .map(res=>res.json())
          .subscribe(data=>{
            this.data=data.results;
            resolve(this.data);
          })

    });
  }
  signUpUser(email:string,password:string){
    return this.fireAuth.createUserWithEmailAndPassword(email,password)
        .then((newUser)=>{
          //sign in the user
          this.fireAuth.signInWithEmailAndPassword(email,password).then((
          authenticatedUser) => {
            //successful login,create user profile
            this.userProfile.child(authenticatedUser.uid).set({
              email:email
            });
          });
        })
  }
  loginUser(email:string,password:string):any{
      return this.fireAuth.signInWithEmailAndPassword(email,password);
  }
  logoutUser(){
      return this.fireAuth.signOut();



  }
  forgotPasswordUser(email:any){
        return this.fireAuth.sendPasswordResetEmail(email)
    }

    googleSignInUser(){
        var provider = new firebase.auth.GoogleAuthProvider();
        provider.addScope('https://www.googleapis.com/auth/plus.login');

        var that = this;

        return firebase.auth().signInWithPopup(provider).then(function(result) {

            if (result.user) {

                // The signed-in user info.
                var user = result.user;

                var res = result.user.displayName.split(" ");

                that.userProfile.child(user.uid).set({
                    email: user.email,
                    photo: user.photoURL,
                    username: user.displayName,
                    name:{
                        first: res[0],
                        middle: res[1],
                        last: res[2],
                    },
                })
            }

        }).catch(function(error) {
            console.log(error);
            //alert("error "+error.message);
        });
    }
}