package com.roctik.ufeg.view;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;

import com.facebook.AccessToken;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.GraphRequest;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.Task;
import com.roctik.ufeg.R;
import com.roctik.ufeg.model.Login;
import com.roctik.ufeg.model.PostLogin;
import com.roctik.ufeg.model.PostSignUp;
import com.roctik.ufeg.model.SignUp;
import com.roctik.ufeg.presenter.LoginPresenter;
import com.roctik.ufeg.presenter.SignUpPresenter;

import org.json.JSONException;

import java.util.Objects;

import info.hoang8f.widget.FButton;

public class LoginActivity extends AppCompatActivity implements ViewLogin, ViewSignUp {

    public static final String APP_PREFERENCES = "mysettings";
    public static final String APP_PREFERENCES_TOKEN = "token";
    private static final String TAG = LoginActivity.class.getSimpleName();
    SharedPreferences mSettings;
    FButton signIn;
    FButton signUp;
    EditText edtEmail;
    EditText edtPass;
    ImageButton facebook, google;
    SignUpPresenter presenterSignUp;
    LoginPresenter presenter;

    private GoogleSignInClient googleSignInClient;
    private CallbackManager callbackManager;
    LoginButton loginButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mSettings = getSharedPreferences(APP_PREFERENCES, Context.MODE_PRIVATE);


        FacebookSdk.sdkInitialize(getApplicationContext());
        callbackManager = CallbackManager.Factory.create();

        setContentView(R.layout.activity_login);
        signIn = findViewById(R.id.btnSignIn);
        signUp = findViewById(R.id.btnSignUp);
        edtEmail = findViewById(R.id.edtEmail);
        edtPass = findViewById(R.id.edtPassword);
        loginButton = findViewById(R.id.login_button);

        //instagram = findViewById(R.id.instagram);
        facebook = findViewById(R.id.facebook);
        google = findViewById(R.id.google);

        presenter = new LoginPresenter();
        presenter.setViewLogin(this);

        presenterSignUp = new SignUpPresenter();
        presenterSignUp.setView(this);

        signUp.setOnClickListener((v) -> {
            Intent signInActivity = new Intent(this, RegistrationActivity.class);
            startActivity(signInActivity);
        });

        signIn.setOnClickListener((v) -> {
            PostLogin postLogin = new PostLogin();
            postLogin.setEmail(Objects.requireNonNull(edtEmail.getText()).toString());
            postLogin.setPassword(Objects.requireNonNull(edtPass.getText()).toString());
            presenter.getLogin(postLogin);
        });


        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                AccessToken accessToken = loginResult.getAccessToken();
                useLoginInformation(accessToken);
            }

            @Override
            public void onCancel() {

            }

            @Override
            public void onError(FacebookException error) {

            }
        });
        facebook.setOnClickListener((v) -> loginButton.performClick());


        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestEmail()
                .build();
        googleSignInClient = GoogleSignIn.getClient(this, gso);

        google.setOnClickListener((v) -> {
            Intent signInIntent = googleSignInClient.getSignInIntent();
            startActivityForResult(signInIntent, 101);
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK)
            if (requestCode == 101) {
                try {
                    Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
                    GoogleSignInAccount account = task.getResult(ApiException.class);
                    PostLogin postLogin = new PostLogin();

                    postLogin.setEmail(Objects.requireNonNull(account).getEmail());
                    postLogin.setPassword(account.getDisplayName() + account.getEmail());

                    presenter.getLogin(postLogin);

                    PostSignUp postSignUp = new PostSignUp();
                    postSignUp.setName(account.getDisplayName());
                    postSignUp.setEmail(account.getEmail());
                    postSignUp.setPassword(account.getDisplayName() + account.getEmail());

                    presenterSignUp.getSignUp(postSignUp);
                } catch (ApiException e) {
                    Log.w(TAG, "signInResult:failed code=" + e.getStatusCode());
                }
            }

    }

    private void useLoginInformation(AccessToken accessToken) {
        //OnCompleted is invoked once the GraphRequest is successful
        GraphRequest request = GraphRequest.newMeRequest(accessToken, (object, response) -> {
            try {
                System.out.println(object.names());
                String name = object.getString("name");
                String email = object.getString("id");

                PostSignUp postSignUp = new PostSignUp();
                postSignUp.setName(name);
                postSignUp.setEmail(email + "@facebook.com");
                postSignUp.setPassword(name + email);
                presenterSignUp.getSignUp(postSignUp);

                PostLogin postLogin = new PostLogin();

                postLogin.setEmail(email + "@facebook.com");
                postLogin.setPassword(name + email);

                presenter.getLogin(postLogin);

            } catch (JSONException e) {
                e.printStackTrace();
            }
        });
        // We set parameters to the GraphRequest using a Bundle.
        Bundle parameters = new Bundle();
        parameters.putString("fields", "id,name,email,picture.width(200)");
        request.setParameters(parameters);
        // Initiate the GraphRequest
        request.executeAsync();
    }

    @Override
    public void getLogin(Login login) {
        if (login.getStatus().equals("ok")) {
            Intent main = new Intent(this, MainActivity.class);
            startActivity(main);
            SharedPreferences.Editor editor = mSettings.edit();
            editor.putString(APP_PREFERENCES_TOKEN, login.getToken());
            editor.apply();
            finish();
        } else {
            Toast.makeText(this, "Ошибка, проверьте логин и пароль", Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public void getSignUp(SignUp signUp) {
        System.out.println(signUp.getStatus());
        if (signUp.getStatus().equals("ok")) {
            SharedPreferences.Editor editor = mSettings.edit();
            editor.putString(APP_PREFERENCES_TOKEN, signUp.getToken());
            editor.apply();
            Intent main = new Intent(this, MainActivity.class);
            startActivity(main);
            finish();
        } else {
            Toast.makeText(this, "Ошибка, попробуйте снова", Toast.LENGTH_LONG).show();
        }
    }

}