/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.keycloak.testsuite.actions;
import org.junit.Assert;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.keycloak.events.Details;
import org.keycloak.events.Event;
import org.keycloak.events.EventType;
import org.keycloak.models.OTPPolicy;
import org.keycloak.models.RealmModel;
import org.keycloak.models.RequiredActionProviderModel;
import org.keycloak.models.UserCredentialModel;
import org.keycloak.models.UserModel;
import org.keycloak.models.utils.HmacOTP;
import org.keycloak.models.utils.TimeBasedOTP;
import org.keycloak.representations.idm.CredentialRepresentation;
import org.keycloak.services.managers.RealmManager;
import org.keycloak.testsuite.AssertEvents;
import org.keycloak.testsuite.OAuthClient;
import org.keycloak.testsuite.pages.AccountTotpPage;
import org.keycloak.testsuite.pages.AppPage;
import org.keycloak.testsuite.pages.AppPage.RequestType;
import org.keycloak.testsuite.pages.LoginConfigTotpPage;
import org.keycloak.testsuite.pages.LoginPage;
import org.keycloak.testsuite.pages.LoginTotpPage;
import org.keycloak.testsuite.pages.RegisterPage;
import org.keycloak.testsuite.rule.KeycloakRule;
import org.keycloak.testsuite.rule.KeycloakRule.KeycloakSetup;
import org.keycloak.testsuite.rule.WebResource;
import org.keycloak.testsuite.rule.WebRule;
import org.keycloak.utils.CredentialHelper;
import org.openqa.selenium.WebDriver;
/**
 * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
 */
public class RequiredActionTotpSetupTest {
    private static OTPPolicy originalPolicy;
    @ClassRule
    public static KeycloakRule keycloakRule = new KeycloakRule(new KeycloakSetup() {
        @Override
        public void config(RealmManager manager, RealmModel defaultRealm, RealmModel appRealm) {
            CredentialHelper.setRequiredCredential(manager.getSession(), CredentialRepresentation.TOTP, appRealm);
            //appRealm.addRequiredCredential(CredentialRepresentation.TOTP);
            RequiredActionProviderModel requiredAction = appRealm.getRequiredActionProviderByAlias(UserModel.RequiredAction.CONFIGURE_TOTP.name());
            requiredAction.setDefaultAction(true);
            appRealm.updateRequiredActionProvider(requiredAction);
            appRealm.setResetPasswordAllowed(true);
            originalPolicy = appRealm.getOTPPolicy();
        }
    });
    @Rule
    public AssertEvents events = new AssertEvents(keycloakRule);
    @Rule
    public WebRule webRule = new WebRule(this);
    @WebResource
    protected WebDriver driver;
    @WebResource
    protected AppPage appPage;
    @WebResource
    protected LoginPage loginPage;
    @WebResource
    protected LoginTotpPage loginTotpPage;
    @WebResource
    protected LoginConfigTotpPage totpPage;
    @WebResource
    protected AccountTotpPage accountTotpPage;
    @WebResource
    protected OAuthClient oauth;
    @WebResource
    protected RegisterPage registerPage;
    protected TimeBasedOTP totp = new TimeBasedOTP();
    @Test
    public void setupTotpRegister() {
        loginPage.open();
        loginPage.clickRegister();
        registerPage.register("firstName", "lastName", "email@mail.com", "setupTotp", "password", "password");
        String userId = events.expectRegister("setupTotp", "email@mail.com").assertEvent().getUserId();
        totpPage.assertCurrent();
        totpPage.configure(totp.generateTOTP(totpPage.getTotpSecret()));
        String sessionId = events.expectRequiredAction(EventType.UPDATE_TOTP).user(userId).detail(Details.USERNAME, "setuptotp").assertEvent().getSessionId();
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().user(userId).session(sessionId).detail(Details.USERNAME, "setuptotp").assertEvent();
    }
    @Test
    public void setupTotpExisting() {
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        totpPage.assertCurrent();
        String totpSecret = totpPage.getTotpSecret();
        totpPage.configure(totp.generateTOTP(totpSecret));
        String sessionId = events.expectRequiredAction(EventType.UPDATE_TOTP).assertEvent().getSessionId();
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Event loginEvent = events.expectLogin().session(sessionId).assertEvent();
        oauth.openLogout();
        events.expectLogout(loginEvent.getSessionId()).assertEvent();
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        String src = driver.getPageSource();
        loginTotpPage.login(totp.generateTOTP(totpSecret));
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().assertEvent();
    }
    @Test
    public void setupTotpRegisteredAfterTotpRemoval() {
        // Register new user
        loginPage.open();
        loginPage.clickRegister();
        registerPage.register("firstName2", "lastName2", "email2@mail.com", "setupTotp2", "password2", "password2");
        String userId = events.expectRegister("setupTotp2", "email2@mail.com").assertEvent().getUserId();
        // Configure totp
        totpPage.assertCurrent();
        String totpCode = totpPage.getTotpSecret();
        totpPage.configure(totp.generateTOTP(totpCode));
        // After totp config, user should be on the app page
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectRequiredAction(EventType.UPDATE_TOTP).user(userId).detail(Details.USERNAME, "setuptotp2").assertEvent();
        Event loginEvent = events.expectLogin().user(userId).detail(Details.USERNAME, "setuptotp2").assertEvent();
        // Logout
        oauth.openLogout();
        events.expectLogout(loginEvent.getSessionId()).user(userId).assertEvent();
        // Try to login after logout
        loginPage.open();
        loginPage.login("setupTotp2", "password2");
        // Totp is already configured, thus one-time password is needed, login page should be loaded
        String uri = driver.getCurrentUrl();
        String src = driver.getPageSource();
        Assert.assertTrue(loginPage.isCurrent());
        Assert.assertFalse(totpPage.isCurrent());
        // Login with one-time password
        loginTotpPage.login(totp.generateTOTP(totpCode));
        loginEvent = events.expectLogin().user(userId).detail(Details.USERNAME, "setupTotp2").assertEvent();
        // Open account page
        accountTotpPage.open();
        accountTotpPage.assertCurrent();
        // Remove google authentificator
        accountTotpPage.removeTotp();
        events.expectAccount(EventType.REMOVE_TOTP).user(userId).assertEvent();
        // Logout
        oauth.openLogout();
        events.expectLogout(loginEvent.getSessionId()).user(userId).assertEvent();
        // Try to login
        loginPage.open();
        loginPage.login("setupTotp2", "password2");
        // Since the authentificator was removed, it has to be set up again
        totpPage.assertCurrent();
        totpPage.configure(totp.generateTOTP(totpPage.getTotpSecret()));
        String sessionId = events.expectRequiredAction(EventType.UPDATE_TOTP).user(userId).detail(Details.USERNAME, "setupTotp2").assertEvent().getSessionId();
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().user(userId).session(sessionId).detail(Details.USERNAME, "setupTotp2").assertEvent();
    }
    @Test
    public void setupOtpPolicyChangedTotp8Digits() {
        // set policy to 8 digits
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                OTPPolicy newPolicy = new OTPPolicy();
                newPolicy.setLookAheadWindow(1);
                newPolicy.setDigits(8);
                newPolicy.setPeriod(30);
                newPolicy.setType(UserCredentialModel.TOTP);
                newPolicy.setAlgorithm(HmacOTP.HMAC_SHA1);
                newPolicy.setInitialCounter(0);
                appRealm.setOTPPolicy(newPolicy);
            }
        });
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        totpPage.assertCurrent();
        String totpSecret = totpPage.getTotpSecret();
        TimeBasedOTP timeBased = new TimeBasedOTP(HmacOTP.HMAC_SHA1, 8, 30, 1);
        totpPage.configure(timeBased.generateTOTP(totpSecret));
        String sessionId = events.expectRequiredAction(EventType.UPDATE_TOTP).assertEvent().getSessionId();
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Event loginEvent = events.expectLogin().session(sessionId).assertEvent();
        oauth.openLogout();
        events.expectLogout(loginEvent.getSessionId()).assertEvent();
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        String src = driver.getPageSource();
        String token = timeBased.generateTOTP(totpSecret);
        Assert.assertEquals(8, token.length());
        loginTotpPage.login(token);
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().assertEvent();
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                appRealm.setOTPPolicy(originalPolicy);
            }
        });
    }
    @Test
    public void setupOtpPolicyChangedHotp() {
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                OTPPolicy newPolicy = new OTPPolicy();
                newPolicy.setLookAheadWindow(0);
                newPolicy.setDigits(6);
                newPolicy.setPeriod(30);
                newPolicy.setType(UserCredentialModel.HOTP);
                newPolicy.setAlgorithm(HmacOTP.HMAC_SHA1);
                newPolicy.setInitialCounter(0);
                appRealm.setOTPPolicy(newPolicy);
            }
        });
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        totpPage.assertCurrent();
        String totpSecret = totpPage.getTotpSecret();
        HmacOTP otpgen = new HmacOTP(6, HmacOTP.HMAC_SHA1, 1);
        totpPage.configure(otpgen.generateHOTP(totpSecret, 0));
        String uri = driver.getCurrentUrl();
        String sessionId = events.expectRequiredAction(EventType.UPDATE_TOTP).assertEvent().getSessionId();
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Event loginEvent = events.expectLogin().session(sessionId).assertEvent();
        oauth.openLogout();
        events.expectLogout(loginEvent.getSessionId()).assertEvent();
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        String token = otpgen.generateHOTP(totpSecret, 1);
        loginTotpPage.login(token);
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().assertEvent();
        oauth.openLogout();
        events.expectLogout(null).session(AssertEvents.isUUID()).assertEvent();
        // test lookAheadWindow
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                OTPPolicy newPolicy = new OTPPolicy();
                newPolicy.setLookAheadWindow(5);
                newPolicy.setDigits(6);
                newPolicy.setPeriod(30);
                newPolicy.setType(UserCredentialModel.HOTP);
                newPolicy.setAlgorithm(HmacOTP.HMAC_SHA1);
                newPolicy.setInitialCounter(0);
                appRealm.setOTPPolicy(newPolicy);
            }
        });
        loginPage.open();
        loginPage.login("test-user@localhost", "password");
        token = otpgen.generateHOTP(totpSecret, 4);
        loginTotpPage.assertCurrent();
        loginTotpPage.login(token);
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        events.expectLogin().assertEvent();
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                appRealm.setOTPPolicy(originalPolicy);
            }
        });
    }
}