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feat: implement Q&A database persistence and Telegram bot integration

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This commit is contained in:
Devesh S
2026-07-22 12:30:21 +05:30
parent 2bf7985f90
commit 8cacd1f23e
16 changed files with 750 additions and 219 deletions
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84
backend/src/main/java/com/rit/portal/controller/CommunityQuestionController.java Normal file
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@@ -0,0 +1,84 @@
package com.rit.portal.controller;
import com.rit.portal.entity.CommunityAnswer;
import com.rit.portal.entity.CommunityQuestion;
import com.rit.portal.repository.CommunityAnswerRepository;
import com.rit.portal.repository.CommunityQuestionRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@RestController
@RequestMapping("/api/questions")
public class CommunityQuestionController {
@Autowired
private CommunityQuestionRepository questionRepository;
@Autowired
private CommunityAnswerRepository answerRepository;
private final RestTemplate restTemplate = new RestTemplate();
private static final String TELEGRAM_BOT_URL = "http://localhost:8082/send_question";
@GetMapping
public List<CommunityQuestion> getAllQuestions() {
return questionRepository.findAll();
}
@PostMapping
public CommunityQuestion createQuestion(@RequestBody CommunityQuestion question) {
if (question.getUpvotes() == null) question.setUpvotes(0);
if (question.getIsAnswered() == null) question.setIsAnswered(false);
question.setCreatedAt(LocalDateTime.now());
CommunityQuestion saved = questionRepository.save(question);
// Notify Telegram bot in a background thread to keep it robust and non-blocking
new Thread(() -> {
try {
Map<String, Object> payload = new HashMap<>();
payload.put("question_id", saved.getId());
payload.put("title", saved.getTitle());
payload.put("body", saved.getBody());
payload.put("author", saved.getAuthor());
restTemplate.postForEntity(TELEGRAM_BOT_URL, payload, String.class);
} catch (Exception e) {
System.err.println("Failed to notify Telegram Bot intermediary: " + e.getMessage());
}
}).start();
return saved;
}
@PostMapping("/{id}/answers")
public ResponseEntity<CommunityAnswer> addAnswer(@PathVariable Integer id, @RequestBody CommunityAnswer answer) {
return questionRepository.findById(id).map(question -> {
answer.setQuestion(question);
if (answer.getUpvotes() == null) answer.setUpvotes(0);
if (answer.getIsAccepted() == null) answer.setIsAccepted(false);
answer.setCreatedAt(LocalDateTime.now());
CommunityAnswer savedAnswer = answerRepository.save(answer);
question.setIsAnswered(true);
questionRepository.save(question);
return ResponseEntity.ok(savedAnswer);
}).orElse(ResponseEntity.notFound().build());
}
@PostMapping("/{id}/upvote")
public ResponseEntity<CommunityQuestion> upvoteQuestion(@PathVariable Integer id) {
return questionRepository.findById(id).map(question -> {
question.setUpvotes(question.getUpvotes() + 1);
return ResponseEntity.ok(questionRepository.save(question));
}).orElse(ResponseEntity.notFound().build());
}
}

3
backend/src/main/java/com/rit/portal/controller/NotePyqController.java
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@@ -9,7 +9,6 @@ import java.util.List;
@RestController
@RequestMapping("/api/notes")
@CrossOrigin(origins = "*") // CrossOrigin configured globally, but added here for safety
public class NotePyqController {
@Autowired
@@ -41,7 +40,7 @@ public class NotePyqController {
// Increment downloads count
@PostMapping("/{id}/download")
public ResponseEntity<Void> incrementDownloads(@PathVariable Long id) {
public ResponseEntity<Void> incrementDownloads(@PathVariable Integer id) {
return noteRepository.findById(id).map(note -> {
note.setDownloadsCount(note.getDownloadsCount() + 1);
note.setFileType(note.getFileType()); // Keep dirty check

40
backend/src/main/java/com/rit/portal/entity/CommunityAnswer.java Normal file
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package com.rit.portal.entity;
import com.fasterxml.jackson.annotation.JsonIgnore;
import jakarta.persistence.*;
import lombok.*;
import java.time.LocalDateTime;
@Entity
@Table(name = "community_answers")
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class CommunityAnswer {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "question_id", nullable = false)
@JsonIgnore
private CommunityQuestion question;
@Column(nullable = false, columnDefinition = "TEXT")
private String body;
@Column(nullable = false)
private String author;
@Column(name = "upvotes")
private Integer upvotes = 0;
@Column(name = "is_accepted")
private Boolean isAccepted = false;
@Column(name = "created_at")
private LocalDateTime createdAt = LocalDateTime.now();
}

46
backend/src/main/java/com/rit/portal/entity/CommunityQuestion.java Normal file
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package com.rit.portal.entity;
import jakarta.persistence.*;
import lombok.*;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
@Entity
@Table(name = "community_questions")
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class CommunityQuestion {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
@Column(nullable = false)
private String title;
@Column(nullable = false, columnDefinition = "TEXT")
private String body;
@Column(nullable = false)
private String author;
@Column(name = "upvotes")
private Integer upvotes = 0;
@Column(name = "tags", columnDefinition = "text[]")
private List<String> tags = new ArrayList<>();
@Column(name = "is_answered")
private Boolean isAnswered = false;
@Column(name = "created_at")
private LocalDateTime createdAt = LocalDateTime.now();
@OneToMany(mappedBy = "question", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@Builder.Default
private List<CommunityAnswer> answers = new ArrayList<>();
}

2
backend/src/main/java/com/rit/portal/entity/NotePyq.java
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@@ -15,7 +15,7 @@ public class NotePyq {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private Integer id;
@Column(nullable = false)
private String title;

9
backend/src/main/java/com/rit/portal/repository/CommunityAnswerRepository.java Normal file
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@@ -0,0 +1,9 @@
package com.rit.portal.repository;
import com.rit.portal.entity.CommunityAnswer;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface CommunityAnswerRepository extends JpaRepository<CommunityAnswer, Integer> {
}

9
backend/src/main/java/com/rit/portal/repository/CommunityQuestionRepository.java Normal file
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@@ -0,0 +1,9 @@
package com.rit.portal.repository;
import com.rit.portal.entity.CommunityQuestion;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface CommunityQuestionRepository extends JpaRepository<CommunityQuestion, Integer> {
}

2
backend/src/main/java/com/rit/portal/repository/NotePyqRepository.java
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@@ -6,7 +6,7 @@ import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface NotePyqRepository extends JpaRepository<NotePyq, Long> {
public interface NotePyqRepository extends JpaRepository<NotePyq, Integer> {
List<NotePyq> findBySemester(Integer semester);
List<NotePyq> findByDepartment(String department);
List<NotePyq> findByFileType(String fileType);