interview 기능 git repo 연결

src/main/java/com/example/skillboost/interview/controller/InterviewController.java

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+package com.example.skillboost.interview.controller;
+
+import com.example.skillboost.interview.dto.InterviewFeedbackRequest;
+import com.example.skillboost.interview.dto.InterviewFeedbackResponse;
+import com.example.skillboost.interview.dto.InterviewStartRequest;
+import com.example.skillboost.interview.dto.InterviewStartResponse;
+import com.example.skillboost.interview.service.InterviewFeedbackService;
+import com.example.skillboost.interview.service.InterviewService;
+import com.example.skillboost.interview.service.SpeechToTextService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.annotation.Profile;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.Map;
+
+@Profile({"local", "prod"})
+@RestController
+@RequestMapping("/api/interview")
+@RequiredArgsConstructor
+public class InterviewController {
+
+    private final InterviewService interviewService;
+    private final InterviewFeedbackService feedbackService;
+    private final SpeechToTextService speechToTextService;
+
+    // 1) 면접 시작 + 질문 생성
+    @PostMapping("/start")
+    public ResponseEntity<InterviewStartResponse> start(@RequestBody InterviewStartRequest request) {
+        InterviewStartResponse response = interviewService.startInterview(request);
+        return ResponseEntity.ok(response);
+    }
+
+    // 2) (텍스트 기반) 전체 답변 평가
+    @PostMapping("/feedback")
+    public ResponseEntity<InterviewFeedbackResponse> feedback(
+            @RequestBody InterviewFeedbackRequest request
+    ) {
+        InterviewFeedbackResponse response = feedbackService.createFeedback(request);
+        return ResponseEntity.ok(response);
+    }
+
+    // 3) 🔊 음성 → 텍스트(STT)만 담당
+    @PostMapping("/stt")
+    public ResponseEntity<Map<String, String>> stt(
+            @RequestPart("audio") MultipartFile audioFile
+    ) {
+        String text = speechToTextService.transcribe(audioFile);
+        return ResponseEntity.ok(Map.of("text", text));
+    }
+}

src/main/java/com/example/skillboost/interview/dto/InterviewAnswerDto.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class InterviewAnswerDto {
+
+    // 어떤 질문에 대한 답변인지 구분용
+    private Long questionId;
+
+    // 질문 타입 (기술 / 인성)
+    private QuestionType type;
+
+    // 실제 질문 텍스트
+    private String question;
+
+    // STT로 변환된 지원자의 답변 텍스트
+    private String answerText;
+
+    // 답변에 사용된 시간(초) - 지금은 0으로 둬도 되고, 나중에 프론트에서 계산해서 넣어도 됨
+    private int durationSec;
+}

src/main/java/com/example/skillboost/interview/dto/InterviewFeedbackRequest.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class InterviewFeedbackRequest {
+
+    // 선택적이지만 있으면 리포팅/로깅에 도움 됨
+    private String sessionId;
+
+    // AI 평가용 전체 질문/답변 리스트
+    private List<InterviewAnswerDto> answers;
+}

src/main/java/com/example/skillboost/interview/dto/InterviewFeedbackResponse.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Getter
+@NoArgsConstructor              // ← 필요시를 대비한 기본 생성자
+@AllArgsConstructor
+public class InterviewFeedbackResponse {
+
+    // 전체 점수 (0 ~ 100)
+    private int overallScore;
+
+    // 전체 답변에 대한 요약 한 문단
+    private String summary;
+
+    // 각 질문별 점수 + 피드백 리스트
+    private List<QuestionFeedbackDto> details;
+}

src/main/java/com/example/skillboost/interview/dto/InterviewQuestionDto.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class InterviewQuestionDto {
+
+    // 세션 내 질문 번호 (1 ~ 5)
+    private Long id;
+
+    // TECH / BEHAV
+    private QuestionType type;
+
+    // 질문 텍스트
+    private String text;
+}

src/main/java/com/example/skillboost/interview/dto/InterviewStartRequest.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor     // JSON 역직렬화용 필수
+@AllArgsConstructor    // 생성자 자동 생성
+public class InterviewStartRequest {
+
+    // GitHub 레포 주소
+    private String repoUrl;
+}

src/main/java/com/example/skillboost/interview/dto/InterviewStartResponse.java

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+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Getter
+@NoArgsConstructor          // JSON 역직렬화 대비용
+@AllArgsConstructor
+@Builder                    // startInterview()에서 builder로 만들기 좋아짐
+public class InterviewStartResponse {
+
+    // 세션 고유 ID (STT / 답변 제출 시 반드시 필요)
+    private String sessionId;
+
+    // 질문당 제한 시간(초) - 기본 60초
+    private int durationSec;
+
+    // AI 생성 기술 질문 + 인성 질문 총 5개
+    private List<InterviewQuestionDto> questions;
+}

src/main/java/com/example/skillboost/interview/dto/QuestionFeedbackDto.java

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+// src/main/java/com/example/skillboost/interview/dto/QuestionFeedbackDto.java
+package com.example.skillboost.interview.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class QuestionFeedbackDto {
+
+    private Long questionId;
+    private String questionText;  // ✅ 질문 내용 추가
+    private int score;
+    private String feedback;
+}

src/main/java/com/example/skillboost/interview/dto/QuestionType.java

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+package com.example.skillboost.interview.dto;
+
+public enum QuestionType {
+    TECH,   // 기술 질문
+    BEHAV   // 인성 질문
+}

src/main/java/com/example/skillboost/interview/model/InterviewSession.java

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+package com.example.skillboost.interview.model;
+
+import com.example.skillboost.interview.dto.InterviewQuestionDto;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Getter
+@NoArgsConstructor      // 세션 저장 시 역직렬화 대비
+@AllArgsConstructor
+@Builder
+public class InterviewSession implements Serializable {
+
+    private String sessionId;                 // 세션 고유 ID
+    private String repoUrl;                   // 레포 주소
+    private LocalDateTime createdAt;          // 세션 생성 시간
+    private List<InterviewQuestionDto> questions; // 질문 리스트
+
+    public static InterviewSession create(String sessionId, String repoUrl, List<InterviewQuestionDto> questions) {
+        return InterviewSession.builder()
+                .sessionId(sessionId)
+                .repoUrl(repoUrl)
+                .questions(questions)
+                .createdAt(LocalDateTime.now())
+                .build();
+    }
+}

src/main/java/com/example/skillboost/interview/service/GeminiClient.java

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+package com.example.skillboost.interview.service;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+
+import java.util.List;
+import java.util.Map;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class GeminiClient {
+
+    private final WebClient.Builder webClientBuilder;
+
+    @Value("${gemini.api.key}")
+    private String apiKey;
+
+    @Value("${gemini.model}")
+    private String model;
+
+    private WebClient webClient() {
+        return webClientBuilder
+                .baseUrl("https://generativelanguage.googleapis.com/v1beta")
+                .build();
+    }
+
+    /**
+     * 단순 텍스트 프롬프트 요청 → 첫 번째 candidate의 text 반환
+     */
+    public String generateText(String prompt) {
+
+        Map<String, Object> body = Map.of(
+                "contents", List.of(
+                        Map.of("parts", List.of(
+                                Map.of("text", prompt)
+                        ))
+                )
+        );
+
+        GeminiResponse response = null;
+
+        try {
+            response = webClient()
+                    .post()
+                    .uri("/models/" + model + ":generateContent?key=" + apiKey)
+                    .bodyValue(body)
+                    .retrieve()
+                    .bodyToMono(GeminiResponse.class)
+                    .onErrorResume(ex -> {
+                        log.error("Gemini API 호출 실패: {}", ex.getMessage());
+                        return Mono.empty();
+                    })
+                    .block();
+
+        } catch (Exception e) {
+            log.error("Gemini 요청 중 서버 오류", e);
+            return "";   // 완전 실패 시 빈 문자열
+        }
+
+        if (response == null || response.candidates == null || response.candidates.isEmpty()) {
+            log.warn("Gemini 응답이 비어 있음");
+            return "";
+        }
+
+        // 첫 후보 꺼내기
+        GeminiCandidate first = response.candidates.get(0);
+
+        if (first.content == null || first.content.parts == null || first.content.parts.isEmpty()) {
+            log.warn("Gemini content.parts 없음");
+            return "";
+        }
+
+        String text = first.content.parts.get(0).text;
+        return text != null ? text.trim() : "";
+    }
+
+    // =============================
+    // 내부 응답 DTO
+    // =============================
+
+    @Getter
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    private static class GeminiResponse {
+        private List<GeminiCandidate> candidates;
+    }
+
+    @Getter
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    private static class GeminiCandidate {
+        private GeminiContent content;
+    }
+
+    @Getter
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    private static class GeminiContent {
+        private List<GeminiPart> parts;
+    }
+
+    @Getter
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    private static class GeminiPart {
+        @JsonProperty("text")
+        private String text;
+    }
+}