Programmiererforum

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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0

org.springframework.boot
spring-boot-starter-parent
2.6.2
  

com
training-management-server
0.0.1-SNAPSHOT
training-management-server
Backend for Training management

17



org.springframework.boot
spring-boot-starter-validation


org.springframework.boot
spring-boot-starter-data-jpa



javax.validation
validation-api



org.hibernate
hibernate-validator
7.0.2.Final




com.h2database
h2
2.0.206
test



org.springframework.boot
spring-boot-starter-web



mysql
mysql-connector-java
runtime


org.springframework.boot
spring-boot-starter-test
test



com.auth0
java-jwt
3.18.2


org.springframework.boot
spring-boot-starter-security



org.projectlombok
lombok
provided






org.springframework.boot
spring-boot-maven-plugin



org.project-lombok
lombok

Code: Select all

package com.trainingmanagementserver.api;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.trainingmanagementserver.entity.*;
import com.trainingmanagementserver.exception.ApiRequestException;
import com.trainingmanagementserver.message.ResponseFile;
import com.trainingmanagementserver.message.ResponseMessage;
import com.trainingmanagementserver.repository.TraineesTrainerRepository;
import com.trainingmanagementserver.repository.UserCredentialsRepository;
import com.trainingmanagementserver.service.AssignmentDetailsService;
import com.trainingmanagementserver.service.FileDBService;
import com.trainingmanagementserver.service.UserCredentialsService;
import com.trainingmanagementserver.service.UserDetailService;
import com.trainingmanagementserver.utility.Utility;
import lombok.Data;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.io.IOException;
import java.net.URI;
import java.util.*;
import java.util.stream.Collectors;
import static org.springframework.http.HttpHeaders.AUTHORIZATION;
import static org.springframework.http.HttpStatus.FORBIDDEN;

@RestController
@RequestMapping("/api")
@RequiredArgsConstructor
@Slf4j
//@Validated
@CrossOrigin("http://localhost:8080")
public class UserController {
private final UserCredentialsService userCredentialsService;
private final UserDetailService userDetailService;
private final UserCredentialsRepository userCredentialsRepository;
private final TraineesTrainerRepository traineesTrainerRepository;
private final AssignmentDetailsService assignmentDetailsService;
private final FileDBService fileDBService;

@PostMapping("/auth/signup")
public ResponseEntity saveUser(@RequestBody UserCredentialsEntity userCredentialsEntity) throws ApiRequestException{
URI uri = URI.create(ServletUriComponentsBuilder.fromCurrentContextPath().path("/api/auth/signup").toUriString());
var username = userCredentialsRepository.findByUsername(userCredentialsEntity.getUsername());
var email = userCredentialsRepository.findByEmail(userCredentialsEntity.getEmail());
if(username == null  && email == null) {
return ResponseEntity.created(uri).body(userCredentialsService.userCredentialsSave(userCredentialsEntity));
} else if(username != null &&  email != null) {
throw new ApiRequestException("Username and Email already exist");
}
else if(username != null){
throw new ApiRequestException("Username already exist");
}
throw new ApiRequestException("Email already exist");
}

@PostMapping("/trainee/addBulk")
public ResponseEntity addBulkTrainees(@RequestBody List bulkUserCredentialsEntity, HttpServletRequest request) throws ApiRequestException{
URI uri = URI.create(ServletUriComponentsBuilder.fromCurrentContextPath().path("/api/role").toUriString());
String username = (new Utility()).getUsernameFromToken(request);
int trainerId = userCredentialsRepository.findByUsername(username).getId();
bulkUserCredentialsEntity.forEach(trainee -> {
var checkUsername = userCredentialsRepository.findByUsername(trainee.getUsername());
var checkEmail = userCredentialsRepository.findByEmail(trainee.getEmail());
if(checkUsername != null || checkEmail != null) {
throw new ApiRequestException("Invalid Entry");
}
});
var savedTrainees = userCredentialsService.addBulkTrainees(bulkUserCredentialsEntity);
savedTrainees.forEach(trainees -> {
int traineeId = trainees.getId();
TraineesTrainer traineesTrainer = new TraineesTrainer();
traineesTrainer.setTraineeId(traineeId);
traineesTrainer.setTrainerId(trainerId);
traineesTrainerRepository.save(traineesTrainer);
userCredentialsService.addRoleToUser("ROLE_TRAINEE", trainees.getUsername());
});
return ResponseEntity.created(uri).body(savedTrainees);
}

@GetMapping("/trainee/all")
public ResponseEntity getAllTrainees(HttpServletRequest request) {
String username = (new Utility().getUsernameFromToken(request));
if(username.isEmpty()) throw new ApiRequestException("Username not present");
var trainerId = userCredentialsRepository.findByUsername(username).getId();
return ResponseEntity.ok().body(userCredentialsService.showTraineesEnrolled(trainerId));
}

@PostMapping("/role")
public ResponseEntity saveRole(@RequestBody Role role) {
URI uri = URI.create(ServletUriComponentsBuilder.fromCurrentContextPath().path("/api/role").toUriString());
return ResponseEntity.created(uri).body(userCredentialsService.roleSave(role));
}

@GetMapping("/register/check")
public ResponseEntity checkRegister(HttpServletRequest request) throws ApiRequestException{
try {
String username = (new Utility()).getUsernameFromToken(request);
int userId = userCredentialsRepository.findByUsername(username).getId();
Map response = new HashMap();
if (userDetailService.fetchUserDetails(userId).isPresent()) {
response.put("isPresent", true);
} else {
response.put("isPresent", false);
}
return ResponseEntity.ok().body(response);
} catch (ApiRequestException exception) {
throw new ApiRequestException("Token is mismatch");
}
}

@PostMapping("/role/addToUser")
public ResponseEntity addRoleToUser(@RequestBody RoleToUserForm roleForm) throws ApiRequestException {
try {
userCredentialsService.addRoleToUser(roleForm.getRoleName(), roleForm.getUsername());
return ResponseEntity.ok().build();
} catch (Exception e) {
throw new ApiRequestException("Not able to add role to the user");
}
}

@PostMapping("/me")
public ResponseEntity saveUser(@Valid @RequestBody UserDetailsEntity userDetailsEntity, HttpServletRequest request) {
//        System.out.println("Printing result "+result);
//        if(result.hasErrors()) {
//            Map  errors = new HashMap();
//            errors.put("error", result);
//            return ResponseEntity.badRequest().body(errors);
//        }
URI uri = URI.create(ServletUriComponentsBuilder.fromCurrentContextPath().path("/api/user/detail").toUriString());
String username = (new Utility()).getUsernameFromToken(request);
int userId = userCredentialsRepository.findByUsername(username).getId();
userDetailsEntity.setId(userId);
return ResponseEntity.created(uri).body(userDetailService.save(userDetailsEntity));
}

@GetMapping("/me")
public ResponseEntity fetchUserDetails(HttpServletRequest request) throws ApiRequestException {
try {
String username = (new Utility()).getUsernameFromToken(request);
int userId = userCredentialsRepository.findByUsername(username).getId();
if (userDetailService.fetchUserDetails(userId).isPresent()) {
UserDetailsEntity userDetailsEntity = userDetailService.fetchUserDetails(userId).get();
UserCredentialsEntity userCredentialsEntity = userCredentialsRepository.findByUsername(username);
UserMerged userMerged = new UserMerged();
userMerged.setUser_detail(userDetailsEntity);
userMerged.setUser_credential(userCredentialsEntity);
return ResponseEntity.ok().body(userMerged);
}
} catch (ApiRequestException exception) {
throw new ApiRequestException("Token mismatch");
}
return new ResponseEntity(HttpStatus.NOT_ACCEPTABLE);
}

@GetMapping("/token/refresh")
public void refreshToken(HttpServletRequest request, HttpServletResponse response) throws IOException {
String authorizationHeader = request.getHeader(AUTHORIZATION);
log.info(authorizationHeader);
if (authorizationHeader != null && authorizationHeader.startsWith("Bearer ")) {
try {
String refresh_token = authorizationHeader.substring("Bearer ".length());
log.info(refresh_token);
Algorithm algorithm = Algorithm.HMAC256("secret".getBytes());
JWTVerifier verifier = JWT.require(algorithm).build();
DecodedJWT decodedJWT = verifier.verify(refresh_token);
String username = decodedJWT.getSubject();
UserCredentialsEntity userCredentialsEntity = userCredentialsService.getUser(username);
String access_token = JWT.create()
.withSubject(userCredentialsEntity.getUsername())
.withExpiresAt(new Date(System.currentTimeMillis() + 10 * 60 * 1000))
.withIssuer(request.getRequestURL().toString())
.withClaim("roles", userCredentialsEntity.getRoles().stream().map(Role::getName).collect(Collectors.toList()))
.sign(algorithm);
Map tokens = new HashMap();
tokens.put("access_token", access_token);
tokens.put("refresh_token", refresh_token);
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
new ObjectMapper().writeValue(response.getOutputStream(), tokens);
} catch (Exception exception) {
response.setHeader("error", exception.getMessage());
response.setStatus(FORBIDDEN.value());
Map error = new HashMap();
error.put("error", exception.getMessage());
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
new ObjectMapper().writeValue(response.getOutputStream(), error);
}
} else {
throw new RuntimeException("Refresh token required!");
}
}

@GetMapping("/user/all")
public List fetchUsers() {
return userCredentialsService.fetchUsersCredentials();
}

@DeleteMapping("/user/{id}")
public ResponseEntity deleteUser(@PathVariable("id") int userId) {
userCredentialsService.deleteUser(userId);
return ResponseEntity.ok("User is deleted Successfully!!");
}

@PostMapping("/assignment/upload")
public ResponseEntity  uploadFile(@RequestParam(value = "file", required = false) MultipartFile file,@RequestParam("title") String title, @RequestParam("description") String description, @RequestParam("total_credit") int total_credit, @RequestParam("due_date") String due_date, HttpServletRequest request) {
String senderUsername = (new Utility()).getUsernameFromToken(request);
int trainerId = userCredentialsRepository.findByUsername(senderUsername).getId();
var savedAssignment = assignmentDetailsService.save(new AssignmentDetail(trainerId, title, description, total_credit, due_date, true));
String message = "Assignment Uploaded Successfully";
if(file != null) {
try {
fileDBService.store(file, savedAssignment.getId());
} catch(IOException exception) {
message = "Could not upload the file " + file.getOriginalFilename();
return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED).body(new ResponseMessage(message));
}
}
return ResponseEntity.ok(new ResponseMessage(message));
}

@GetMapping("/files/{id}")
public ResponseEntity getFile(@PathVariable("id") int id) {
var file = fileDBService.getFileByFileId(id);
String fileDownloadUri = ServletUriComponentsBuilder
.fromCurrentContextPath()
.path("/files/")
.path(Integer.toString(file.getId()))
.toUriString();

ResponseFile responseFile = new ResponseFile(file.getName(),fileDownloadUri, file.getType(), file.getData().length);
return ResponseEntity.ok().body(responseFile);
}

}

@Data
class RoleToUserForm {
private String username;
private String roleName;
}