/**
 * Copyright © 2016-2017 The Thingsboard Authors
 *
 * 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.thingsboard.server.controller;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonNode;
import org.apache.commons.lang3.RandomStringUtils;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.http.HttpHeaders;
import org.thingsboard.server.common.data.Customer;
import org.thingsboard.server.common.data.Tenant;
import org.thingsboard.server.common.data.User;
import org.thingsboard.server.common.data.id.CustomerId;
import org.thingsboard.server.common.data.id.TenantId;
import org.thingsboard.server.common.data.page.TextPageData;
import org.thingsboard.server.common.data.page.TextPageLink;
import org.thingsboard.server.common.data.security.Authority;
import org.thingsboard.server.service.mail.TestMailService;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;

public class UserControllerTest extends AbstractControllerTest {
    
    private IdComparator<User> idComparator = new IdComparator<>();

    @Test
    public void testSaveUser() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = "tenant2@thingsboard.org";
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        User savedUser = doPost("/api/user", user, User.class);
        Assert.assertNotNull(savedUser);
        Assert.assertNotNull(savedUser.getId());
        Assert.assertTrue(savedUser.getCreatedTime() > 0);
        Assert.assertEquals(user.getEmail(), savedUser.getEmail());

        User foundUser = doGet("/api/user/"+savedUser.getId().getId().toString(), User.class); 
        Assert.assertEquals(foundUser, savedUser);
        
        logout();
        doGet("/api/noauth/activate?activateToken={activateToken}", TestMailService.currentActivateToken)
        .andExpect(status().isSeeOther())
        .andExpect(header().string(HttpHeaders.LOCATION, "/login/createPassword?activateToken=" + TestMailService.currentActivateToken));

        JsonNode tokenInfo = readResponse(doPost("/api/noauth/activate", "activateToken", TestMailService.currentActivateToken, "password", "testPassword").andExpect(status().isOk()), JsonNode.class);
        validateAndSetJwtToken(tokenInfo, email);

        doGet("/api/auth/user")
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.authority",is(Authority.TENANT_ADMIN.name())))
        .andExpect(jsonPath("$.email",is(email)));
        
        logout();
        
        login(email, "testPassword");
        
        doGet("/api/auth/user")
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.authority",is(Authority.TENANT_ADMIN.name())))
        .andExpect(jsonPath("$.email",is(email)));
        
        loginSysAdmin();
        doDelete("/api/user/"+savedUser.getId().getId().toString())
        .andExpect(status().isOk());
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testResetPassword() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = "tenant2@thingsboard.org";
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        User savedUser = createUserAndLogin(user, "testPassword1");
        logout();
        doPost("/api/noauth/resetPasswordByEmail", "email", email)
        .andExpect(status().isOk());
        doGet("/api/noauth/resetPassword?resetToken={resetToken}", TestMailService.currentResetPasswordToken)
        .andExpect(status().isSeeOther())
        .andExpect(header().string(HttpHeaders.LOCATION, "/login/resetPassword?resetToken=" + TestMailService.currentResetPasswordToken));
        
        JsonNode tokenInfo = readResponse(doPost("/api/noauth/resetPassword", "resetToken", TestMailService.currentResetPasswordToken, "password", "testPassword2").andExpect(status().isOk()), JsonNode.class);
        validateAndSetJwtToken(tokenInfo, email);

        doGet("/api/auth/user")
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.authority",is(Authority.TENANT_ADMIN.name())))
        .andExpect(jsonPath("$.email",is(email)));
        
        logout();
        
        login(email, "testPassword2");
        doGet("/api/auth/user")
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.authority",is(Authority.TENANT_ADMIN.name())))
        .andExpect(jsonPath("$.email",is(email)));
        
        loginSysAdmin();
        doDelete("/api/user/"+savedUser.getId().getId().toString())
        .andExpect(status().isOk());
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testFindUserById() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = "tenant2@thingsboard.org";
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        User savedUser = doPost("/api/user", user, User.class);
        User foundUser = doGet("/api/user/"+savedUser.getId().getId().toString(), User.class); 
        Assert.assertNotNull(foundUser);
        Assert.assertEquals(savedUser, foundUser);
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testSaveUserWithSameEmail() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = TENANT_ADMIN_EMAIL;
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        doPost("/api/user", user)
        .andExpect(status().isBadRequest())
        .andExpect(statusReason(containsString("User with email '" + email + "'  already present in database")));
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testSaveUserWithInvalidEmail() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = "tenant_thingsboard.org";
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        doPost("/api/user", user)
        .andExpect(status().isBadRequest())
        .andExpect(statusReason(containsString("Invalid email address format '" + email + "'")));
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testSaveUserWithEmptyEmail() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        doPost("/api/user", user)
        .andExpect(status().isBadRequest())
        .andExpect(statusReason(containsString("User email should be specified")));
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testSaveUserWithoutTenant() throws Exception {
        loginSysAdmin();
        
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setEmail("tenant2@thingsboard.org");
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        doPost("/api/user", user)
        .andExpect(status().isBadRequest())
        .andExpect(statusReason(containsString("Tenant administrator should be assigned to tenant")));
    }
    
    @Test
    public void testDeleteUser() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        String email = "tenant2@thingsboard.org";
        User user = new User();
        user.setAuthority(Authority.TENANT_ADMIN);
        user.setTenantId(savedTenant.getId());
        user.setEmail(email);
        user.setFirstName("Joe");
        user.setLastName("Downs");
        
        User savedUser = doPost("/api/user", user, User.class);
        User foundUser = doGet("/api/user/"+savedUser.getId().getId().toString(), User.class); 
        Assert.assertNotNull(foundUser);
        
        doDelete("/api/user/"+savedUser.getId().getId().toString())
        .andExpect(status().isOk());
        
        doGet("/api/user/"+savedUser.getId().getId().toString())
        .andExpect(status().isNotFound());
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testFindTenantAdmins() throws Exception {
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        TenantId tenantId = savedTenant.getId();
        
        List<User> tenantAdmins = new ArrayList<>();
        for (int i=0;i<64;i++) {
            User user = new User();
            user.setAuthority(Authority.TENANT_ADMIN);
            user.setTenantId(tenantId);
            user.setEmail("testTenant" + i + "@thingsboard.org");
            tenantAdmins.add(doPost("/api/user", user, User.class));
        }
        
        List<User> loadedTenantAdmins = new ArrayList<>();
        TextPageLink pageLink = new TextPageLink(33);
        TextPageData<User> pageData = null;
        do {
            pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedTenantAdmins.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(tenantAdmins, idComparator);
        Collections.sort(loadedTenantAdmins, idComparator);
        
        Assert.assertEquals(tenantAdmins, loadedTenantAdmins);
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
        
        pageLink = new TextPageLink(33);
        pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                new TypeReference<TextPageData<User>>(){}, pageLink);
        Assert.assertFalse(pageData.hasNext());
        Assert.assertTrue(pageData.getData().isEmpty());
    }
    
    @Test
    public void testFindTenantAdminsByEmail() throws Exception {
        
        loginSysAdmin();
        
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        TenantId tenantId = savedTenant.getId();
        
        String email1 = "testEmail1";      
        List<User> tenantAdminsEmail1 = new ArrayList<>();
        
        for (int i=0;i<124;i++) {
            User user = new User();
            user.setAuthority(Authority.TENANT_ADMIN);
            user.setTenantId(tenantId);
            String suffix = RandomStringUtils.randomAlphanumeric((int)(5 + Math.random()*10));
            String email = email1+suffix+ "@thingsboard.org";
            email = i % 2 == 0 ? email.toLowerCase() : email.toUpperCase();
            user.setEmail(email);
            tenantAdminsEmail1.add(doPost("/api/user", user, User.class));
        }
        
        String email2 = "testEmail2";        
        List<User> tenantAdminsEmail2 = new ArrayList<>();
        
        for (int i=0;i<112;i++) {
            User user = new User();
            user.setAuthority(Authority.TENANT_ADMIN);
            user.setTenantId(tenantId);
            String suffix = RandomStringUtils.randomAlphanumeric((int)(5 + Math.random()*10));
            String email = email2+suffix+ "@thingsboard.org";
            email = i % 2 == 0 ? email.toLowerCase() : email.toUpperCase();
            user.setEmail(email);
            tenantAdminsEmail2.add(doPost("/api/user", user, User.class));
        }
        
        List<User> loadedTenantAdminsEmail1 = new ArrayList<>();
        TextPageLink pageLink = new TextPageLink(33, email1);
        TextPageData<User> pageData = null;
        do {
            pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedTenantAdminsEmail1.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(tenantAdminsEmail1, idComparator);
        Collections.sort(loadedTenantAdminsEmail1, idComparator);
        
        Assert.assertEquals(tenantAdminsEmail1, loadedTenantAdminsEmail1);
        
        List<User> loadedTenantAdminsEmail2 = new ArrayList<>();
        pageLink = new TextPageLink(16, email2);
        do {
            pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedTenantAdminsEmail2.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(tenantAdminsEmail2, idComparator);
        Collections.sort(loadedTenantAdminsEmail2, idComparator);
        
        Assert.assertEquals(tenantAdminsEmail2, loadedTenantAdminsEmail2);
        
        for (User user : loadedTenantAdminsEmail1) {
            doDelete("/api/user/"+user.getId().getId().toString())
                .andExpect(status().isOk());
        }
        
        pageLink = new TextPageLink(4, email1);
        pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                new TypeReference<TextPageData<User>>(){}, pageLink);
        Assert.assertFalse(pageData.hasNext());
        Assert.assertEquals(0, pageData.getData().size());
        
        for (User user : loadedTenantAdminsEmail2) {
            doDelete("/api/user/"+user.getId().getId().toString())
                .andExpect(status().isOk());
        }
        
        pageLink = new TextPageLink(4, email2);
        pageData = doGetTypedWithPageLink("/api/tenant/" + tenantId.getId().toString() + "/users?", 
                new TypeReference<TextPageData<User>>(){}, pageLink);
        Assert.assertFalse(pageData.hasNext());
        Assert.assertEquals(0, pageData.getData().size());
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testFindCustomerUsers() throws Exception {
        
        loginSysAdmin();
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        TenantId tenantId = savedTenant.getId();
        User tenantAdmin = new User();
        tenantAdmin.setAuthority(Authority.TENANT_ADMIN);
        tenantAdmin.setTenantId(tenantId);
        tenantAdmin.setEmail("tenant2@thingsboard.org");
        tenantAdmin.setFirstName("Joe");
        tenantAdmin.setLastName("Downs");
        
        tenantAdmin = createUserAndLogin(tenantAdmin, "testPassword1");
        
        Customer customer = new Customer();
        customer.setTitle("My customer");
        Customer savedCustomer = doPost("/api/customer", customer, Customer.class);

        CustomerId customerId = savedCustomer.getId();
        
        List<User> customerUsers = new ArrayList<>();
        for (int i=0;i<56;i++) {
            User user = new User();
            user.setAuthority(Authority.CUSTOMER_USER);
            user.setCustomerId(customerId);
            user.setEmail("testCustomer" + i + "@thingsboard.org");
            customerUsers.add(doPost("/api/user", user, User.class));
        }
        
        List<User> loadedCustomerUsers = new ArrayList<>();
        TextPageLink pageLink = new TextPageLink(33);
        TextPageData<User> pageData = null;
        do {
            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedCustomerUsers.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(customerUsers, idComparator);
        Collections.sort(loadedCustomerUsers, idComparator);
        
        Assert.assertEquals(customerUsers, loadedCustomerUsers);
        
        doDelete("/api/customer/"+customerId.getId().toString())
        .andExpect(status().isOk());
        
        loginSysAdmin();
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
    @Test
    public void testFindCustomerUsersByEmail() throws Exception {
        
        loginSysAdmin();
        Tenant tenant = new Tenant();
        tenant.setTitle("My tenant");
        Tenant savedTenant = doPost("/api/tenant", tenant, Tenant.class);
        Assert.assertNotNull(savedTenant);
        
        TenantId tenantId = savedTenant.getId();
        User tenantAdmin = new User();
        tenantAdmin.setAuthority(Authority.TENANT_ADMIN);
        tenantAdmin.setTenantId(tenantId);
        tenantAdmin.setEmail("tenant2@thingsboard.org");
        tenantAdmin.setFirstName("Joe");
        tenantAdmin.setLastName("Downs");
        
        tenantAdmin = createUserAndLogin(tenantAdmin, "testPassword1");
        
        Customer customer = new Customer();
        customer.setTitle("My customer");
        Customer savedCustomer = doPost("/api/customer", customer, Customer.class);

        CustomerId customerId = savedCustomer.getId();
        
        String email1 = "testEmail1";        
        List<User> customerUsersEmail1 = new ArrayList<>();
        
        for (int i=0;i<74;i++) {
            User user = new User();
            user.setAuthority(Authority.CUSTOMER_USER);
            user.setCustomerId(customerId);
            String suffix = RandomStringUtils.randomAlphanumeric((int)(5 + Math.random()*10));
            String email = email1+suffix+ "@thingsboard.org";
            email = i % 2 == 0 ? email.toLowerCase() : email.toUpperCase();
            user.setEmail(email);
            customerUsersEmail1.add(doPost("/api/user", user, User.class));
        }
        
        String email2 = "testEmail2";        
        List<User> customerUsersEmail2 = new ArrayList<>();
        
        for (int i=0;i<92;i++) {
            User user = new User();
            user.setAuthority(Authority.CUSTOMER_USER);
            user.setCustomerId(customerId);
            String suffix = RandomStringUtils.randomAlphanumeric((int)(5 + Math.random()*10));
            String email = email2+suffix+ "@thingsboard.org";
            email = i % 2 == 0 ? email.toLowerCase() : email.toUpperCase();
            user.setEmail(email);
            customerUsersEmail2.add(doPost("/api/user", user, User.class));
        }
        
        List<User> loadedCustomerUsersEmail1 = new ArrayList<>();
        TextPageLink pageLink = new TextPageLink(33, email1);
        TextPageData<User> pageData = null;
        do {
            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedCustomerUsersEmail1.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(customerUsersEmail1, idComparator);
        Collections.sort(loadedCustomerUsersEmail1, idComparator);
        
        Assert.assertEquals(customerUsersEmail1, loadedCustomerUsersEmail1);
        
        List<User> loadedCustomerUsersEmail2 = new ArrayList<>();
        pageLink = new TextPageLink(16, email2);
        do {
            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/users?", 
                    new TypeReference<TextPageData<User>>(){}, pageLink);
            loadedCustomerUsersEmail2.addAll(pageData.getData());
            if (pageData.hasNext()) {
                pageLink = pageData.getNextPageLink();
            }
        } while (pageData.hasNext());
        
        Collections.sort(customerUsersEmail2, idComparator);
        Collections.sort(loadedCustomerUsersEmail2, idComparator);
        
        Assert.assertEquals(customerUsersEmail2, loadedCustomerUsersEmail2);
        
        for (User user : loadedCustomerUsersEmail1) {
            doDelete("/api/user/"+user.getId().getId().toString())
            .andExpect(status().isOk());
        }
        
        pageLink = new TextPageLink(4, email1);
        pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/users?", 
                new TypeReference<TextPageData<User>>(){}, pageLink);
        Assert.assertFalse(pageData.hasNext());
        Assert.assertEquals(0, pageData.getData().size());
        
        for (User user : loadedCustomerUsersEmail2) {
            doDelete("/api/user/"+user.getId().getId().toString())
            .andExpect(status().isOk());
        }
        
        pageLink = new TextPageLink(4, email2);
        pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/users?", 
                new TypeReference<TextPageData<User>>(){}, pageLink);
        Assert.assertFalse(pageData.hasNext());
        Assert.assertEquals(0, pageData.getData().size());
        
        doDelete("/api/customer/"+customerId.getId().toString())
        .andExpect(status().isOk());
        
        loginSysAdmin();
        
        doDelete("/api/tenant/"+savedTenant.getId().getId().toString())
        .andExpect(status().isOk());
    }
    
}
