Created AuthTokenHandler and PasswordHasher, and used both of them to…

… create FreelancerRegister command.

Signed-off-by: Akram-Fahim <akramadel2001@gmail.com>

services/users/pom.xml

@@ -103,6 +103,32 @@
             <version>1.19.7</version>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.mindrot</groupId>
+            <artifactId>jbcrypt</artifactId>
+            <version>0.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.11.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.11.2</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-jackson</artifactId>
+            <version>0.11.2</version>
+            <scope>runtime</scope>
+        </dependency>
     </dependencies>
 
     <build>

services/users/src/main/java/com/workup/users/commands/FreelancerRegister.java

@@ -0,0 +1,36 @@
+package com.workup.users.commands;
+
+import static com.workup.users.commands.utils.AuthTokenHandler.generateToken;
+import static com.workup.users.commands.utils.PasswordHasher.hashPassword;
+
+import com.workup.shared.commands.users.requests.FreelancerRegisterRequest;
+import com.workup.shared.commands.users.responses.SignUpAndInResponse;
+import com.workup.shared.enums.HttpStatusCode;
+import com.workup.users.db.Freelancer;
+import java.util.Objects;
+
+public class FreelancerRegister
+    extends UserCommand<FreelancerRegisterRequest, SignUpAndInResponse> {
+
+  @Override
+  public SignUpAndInResponse Run(FreelancerRegisterRequest request) {
+    if (Objects.isNull(request.getEmail())
+        || Objects.isNull(request.getPassword())
+        || Objects.isNull(request.getFullName())) {
+      return SignUpAndInResponse.builder().withStatusCode(HttpStatusCode.BAD_REQUEST).build();
+    }
+    Freelancer freelancer =
+        Freelancer.builder()
+            .withEmail(request.getEmail())
+            .withPassword_hash(hashPassword(request.getPassword()))
+            .withFull_name(request.getFullName())
+            .withJob_title(request.getJobTitle())
+            .withCity(request.getCity())
+            .build();
+
+    return SignUpAndInResponse.builder()
+        .withAuthToken(generateToken(freelancer.getEmail()))
+        .withStatusCode(HttpStatusCode.OK)
+        .build();
+  }
+}

services/users/src/main/java/com/workup/users/commands/utils/AuthTokenHandler.java

@@ -0,0 +1,27 @@
+package com.workup.users.commands.utils;
+
+import io.jsonwebtoken.*;
+import java.util.Date;
+
+public class AuthTokenHandler {
+  private static final String SECRET_KEY = System.getenv("SECRET_KEY");
+  private static final JwtParser parser = Jwts.parserBuilder().setSigningKey(SECRET_KEY).build();
+
+  public static String generateToken(String email) {
+    Date now = new Date();
+    Date expiryDate = new Date(now.getTime() + 3600000); // Token expires in 1 hour
+
+    return Jwts.builder()
+        .setSubject(email)
+        .setIssuedAt(now)
+        .setExpiration(expiryDate)
+        .signWith(SignatureAlgorithm.HS512, SECRET_KEY)
+        .compact();
+  }
+
+  public static String decodeToken(String token) {
+    Jws<Claims> claimsJws = parser.parseClaimsJws(token);
+    Claims body = claimsJws.getBody();
+    return body.getSubject();
+  }
+}

services/users/src/main/java/com/workup/users/commands/utils/PasswordHasher.java

@@ -0,0 +1,13 @@
+package com.workup.users.commands.utils;
+
+import org.mindrot.jbcrypt.BCrypt;
+
+public class PasswordHasher {
+  public static String hashPassword(String password) {
+    return BCrypt.hashpw(password, BCrypt.gensalt());
+  }
+
+  public static boolean checkPassword(String inputPassword, String hashedPassword) {
+    return BCrypt.checkpw(inputPassword, hashedPassword);
+  }
+}

services/users/src/main/resources/application.properties

@@ -8,3 +8,4 @@ spring.rabbitmq.host=localhost
 spring.rabbitmq.port=5672
 spring.rabbitmq.username=guest
 spring.rabbitmq.password=guest
+SECRET_KEY=j4#BbFGfoc^2k*Bz