Push existing project to GitLab

.gitignore

+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/encodings.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file

.idea/uiDesigner.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.2</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <groupId>org.local</groupId>
+    <artifactId>calculator-endpoint</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.fathzer</groupId>
+            <artifactId>javaluator</artifactId>
+            <version>3.0.3</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.30</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.11.5</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-jackson</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.auth0</groupId>
+            <artifactId>java-jwt</artifactId>
+            <version>4.3.0</version>
+        </dependency>
+
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
\ No newline at end of file

src/main/java/org/local/Main.java

+package org.local;
+
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+
+@SpringBootApplication(scanBasePackages={"org.local"})
+public class Main {
+    public static void main(String[] args) {
+        SpringApplication.run(Main.class,args);
+    }
+}

src/main/java/org/local/config/OpenApiConfiguration.java

+package org.local.config;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Contact;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.info.License;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OpenApiConfiguration {
+
+    @Bean
+    public OpenAPI customOpenAPI() {
+        return new OpenAPI().info(apiInfo());
+    }
+
+    private Info apiInfo() {
+        return new Info()
+                .title("Calculator API")
+                .description("API for calculating formulas and storing results for users")
+                .version("1.0")
+                .contact(apiContact())
+                .license(apiLicence());
+    }
+
+    private License apiLicence() {
+        return new License()
+                .name("MIT Licence")
+                .url("https://opensource.org/licenses/mit-license.php");
+    }
+
+    private Contact apiContact() {
+        return new Contact()
+                .name("Erwan LE TUTOUR")
+                .email("erwanletutour.elt@gmail.com")
+                .url("https://github.com/ErwanLT");
+    }
+}

src/main/java/org/local/config/ServerConfig.java

+package org.local.config;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
+import org.springframework.stereotype.Component;
+
+import java.net.InetAddress;
+
+@Component
+public class ServerConfig implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
+    Logger logger = LoggerFactory.getLogger(ServerConfig.class);
+    @Override
+    public void customize(ConfigurableServletWebServerFactory factory) {
+        try {
+            factory.setAddress(InetAddress.getByName("0.0.0.0"));
+        }catch (Exception e){
+            logger.error(e.getMessage());
+        }
+    }
+}

src/main/java/org/local/controllers/MainController.java

+package org.local.controllers;
+
+
+import org.local.model.Expression;
+import org.local.security.UserDetailsImpl;
+import org.local.service.CalculatorService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@CrossOrigin(origins = "http://localhost:5173")
+public class MainController {
+    @Autowired
+    CalculatorService calculatorService;
+
+    @PostMapping( "/calculator")
+    public Expression saveExpression(@RequestBody Expression expression,
+                                     @AuthenticationPrincipal UserDetailsImpl user) {
+        return calculatorService.CalculateExpression(expression, user.getId());
+    }
+
+    @GetMapping( "/calculator")
+    public Page<Expression> getExpression(@AuthenticationPrincipal UserDetailsImpl user,
+                                          @RequestParam int pageNumber){
+        return calculatorService.getExpressionsFromUser(user.getId(), pageNumber);
+    }
+}

src/main/java/org/local/controllers/UserController.java

+package org.local.controllers;
+
+import org.local.model.SignInRequest;
+import org.local.security.TokenService;
+import org.local.service.UserService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/users")
+@CrossOrigin(origins = "http://localhost:5173")
+public class UserController {
+
+    @Autowired
+    UserService userService;
+    @Autowired
+    TokenService tokenService;
+
+    @PostMapping( "/verify")
+    public Map<String,Object> verifyUser(@RequestBody SignInRequest user){
+        Map<String,Object> map = new HashMap<>();
+        map.put("token",userService.checkUser(user.getUserName(),user.getPassword()));
+        return map;
+    }
+
+    @PostMapping( "/create")
+    public Map<String,Object> createUser(@RequestBody SignInRequest user){
+        Map<String,Object> map = new HashMap<>();
+        map.put("token",userService.createUser(user.getUserName(),user.getPassword()));
+        return map;
+    }
+
+}

src/main/java/org/local/dao/ExpressionDao.java

+package org.local.dao;
+
+import org.local.model.Expression;
+import org.local.model.User;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface ExpressionDao extends JpaRepository<Expression,Long> {
+    Page<Expression> findByUser(User user, Pageable pageable);
+
+}

src/main/java/org/local/dao/UserDao.java

+package org.local.dao;
+
+import org.local.model.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface UserDao extends JpaRepository<User,String> {
+    Optional<User> findByNameAndPassword(String name, String password);
+    Optional<User> findByName(String name);
+}

src/main/java/org/local/model/Expression.java

+package org.local.model;
+
+
+import com.fasterxml.jackson.annotation.JsonBackReference;
+import jakarta.persistence.*;
+import lombok.Data;
+
+@Data
+@Entity
+@Table(name = "Expressions")
+public class Expression {
+
+    @Id
+    @GeneratedValue
+    @Column(name="EXPRESSION_ID")
+    private Long id;
+
+    @Column(name="EXPRESSION")
+    String expression;
+
+    @Column(name="ANSWER")
+    String answer;
+
+    @JsonBackReference
+    @ManyToOne
+    @JoinColumn(name="USER_ID")
+    User user;
+}

src/main/java/org/local/model/SignInRequest.java

+package org.local.model;
+
+import lombok.Data;
+
+@Data
+public class SignInRequest {
+    private String userName;
+    private String password;
+}

src/main/java/org/local/model/User.java

+package org.local.model;
+
+import com.fasterxml.jackson.annotation.JsonManagedReference;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import jakarta.persistence.*;
+import lombok.Data;
+import org.hibernate.annotations.GenericGenerator;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+@Data
+@Entity
+@Table(name = "Users")
+public class User {
+
+    @Id
+    @GeneratedValue(generator = "uuid")
+    @GenericGenerator(name = "uuid", strategy = "uuid2")
+    @Column(name="USER_ID")
+    private String id;
+
+    @Column(name="NAME")
+    private String name;
+
+    @Column(name="IS_ADMIN")
+    private boolean isAdmin;
+
+    @JsonProperty(access = JsonProperty.Access.WRITE_ONLY)
+    @Column(name="PASSWORD")
+    private String password;
+
+    @JsonManagedReference
+    @OneToMany(mappedBy="user")
+    private List<Expression> expressions = new ArrayList<>();
+
+
+}

src/main/java/org/local/security/AuthTokenFilter.java

+package org.local.security;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.local.dao.UserDao;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
+import org.springframework.web.filter.OncePerRequestFilter;
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import com.auth0.jwt.exceptions.JWTVerificationException;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.springframework.http.HttpHeaders;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import java.io.IOException;
+public class AuthTokenFilter extends OncePerRequestFilter {
+
+    @Value("${keyStr}")
+    private String keyStr;
+
+    @Autowired
+    private UserDetailsService userDetailsService;
+    @Autowired
+    UserDao userDao;
+
+    private static final Logger logger = LogManager.getLogger(AuthTokenFilter.class);
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request,
+                                    HttpServletResponse response,
+                                    FilterChain filterChain) throws ServletException, IOException {
+
+
+        response.setHeader("Access-Control-Allow-Origin", "*");
+        response.setHeader("Access-Control-Allow-Credentials", "true");
+        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
+        response.setHeader("Access-Control-Max-Age", "3600");
+        response.setHeader("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With, remember-me");
+
+        final String header = request.getHeader(HttpHeaders.AUTHORIZATION);
+
+        if (header != null && header.startsWith("Bearer ")) {
+            String token = header.substring(7);
+            final String userId = validateTokenAndGetUserId(token);
+            UserDetails userDetails = UserDetailsImpl.build(userDao.findById(userId).get());
+            UsernamePasswordAuthenticationToken authentication =
+                    new UsernamePasswordAuthenticationToken(
+                            userDetails,
+                            null,
+                            userDetails.getAuthorities());
+            authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
+            SecurityContextHolder.getContext().setAuthentication(authentication);
+        }
+
+        filterChain.doFilter(request, response);
+
+    }
+    public String validateTokenAndGetUserId(final String token) {
+        try {
+            final Algorithm hmac512 = Algorithm.HMAC512(keyStr);
+            final JWTVerifier verifier = JWT.require(hmac512).build();
+            return verifier.verify(token).getSubject();
+        } catch (final JWTVerificationException verificationEx) {
+            logger.warn("token is invalid: {}", verificationEx.getMessage());
+            return null;
+        }
+    }
+
+}

src/main/java/org/local/security/TokenService.java

+package org.local.security;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+import java.time.Duration;
+import java.time.Instant;
+
+@Service
+public class TokenService {
+    @Value("${keyStr}")
+    private String keyStr;
+
+    private static final Duration JWT_TOKEN_VALIDITY = Duration.ofMinutes(5);
+
+    public String generateToken(final String userId) {
+        final Instant now = Instant.now();
+        final Algorithm hmac512 = Algorithm.HMAC512(keyStr);;
+        final JWTVerifier verifier = JWT.require(hmac512).build();
+        return JWT.create()
+                .withSubject(userId)
+                .withIssuer("idatt2105_token_issuer_app")
+                .withIssuedAt(now)
+                .withExpiresAt(now.plusMillis(JWT_TOKEN_VALIDITY.toMillis()))
+                .sign(hmac512);
+    }
+
+}

src/main/java/org/local/security/UserDetailsImpl.java

+package org.local.security;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+import lombok.Getter;
+import org.local.model.User;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+@Getter
+public class UserDetailsImpl implements UserDetails{
+    private static final long serialVersionUID = 1L;
+
+    private String id;
+
+    private String username;
+
+    @JsonIgnore
+    private String password;
+
+    private Collection<? extends GrantedAuthority> authorities;
+
+    public UserDetailsImpl(String id, String username,String password,
+                           Collection<? extends GrantedAuthority> authorities) {
+        this.id = id;
+        this.username = username;
+        this.password = password;
+        this.authorities = authorities;
+    }
+
+    public static UserDetailsImpl build(User user) {
+        List<GrantedAuthority> authorities = new ArrayList<>();
+        if(user.isAdmin()){
+            authorities.add(new SimpleGrantedAuthority("ROLE_ADMIN"));
+        }
+        return new UserDetailsImpl(
+                user.getId(),
+                user.getName(),
+                user.getPassword(),
+                authorities);
+    }
+
+    @Override
+    public boolean isAccountNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isAccountNonLocked() {
+        return true;
+    }
+
+    @Override
+    public boolean isCredentialsNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return true;
+    }
+
+}