Merge remote-tracking branch 'origin/backend/feature/42-gpt-api-respo…

…nse-dto' into dev_backend

backend/src/main/java/com/isp/backend/domain/gpt/config/ChatGptConfig.java → backend/src/main/java/com/isp/backend/domain/gpt/config/GptConfig.java

@@ -3,7 +3,7 @@
 import org.springframework.context.annotation.Configuration;
 
 @Configuration
-public class ChatGptConfig {
+public class GptConfig {
     public static final String AUTHORIZATION = "Authorization";
     public static final String BEARER = "Bearer ";
     public static final String CHAT_MODEL = "gpt-3.5-turbo";

backend/src/main/java/com/isp/backend/domain/gpt/controller/GptController.java

@@ -0,0 +1,25 @@
+package com.isp.backend.domain.gpt.controller;
+
+import com.isp.backend.domain.gpt.dto.GptResponseDTO;
+import com.isp.backend.domain.gpt.dto.GptScheduleRequestDto;
+import com.isp.backend.domain.gpt.entity.GptMessage;
+import com.isp.backend.domain.gpt.service.GptService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RequiredArgsConstructor
+@RequestMapping("/chat-gpt")
+@RestController
+public class GptController {
+    private final GptService gptService;
+
+    @PostMapping("/question")
+    public ResponseEntity<GptMessage> sendQuestion(@RequestBody GptScheduleRequestDto gptScheduleRequestDto) {
+        GptResponseDTO gptResponseDTO = gptService.askQuestion(gptScheduleRequestDto);
+        return ResponseEntity.ok(gptResponseDTO.getChoices().get(0).getMessage());
+    }
+}

backend/src/main/java/com/isp/backend/domain/gpt/dto/ChatGptRequestDTO.java → backend/src/main/java/com/isp/backend/domain/gpt/dto/GptRequestDTO.java

@@ -1,7 +1,7 @@
 package com.isp.backend.domain.gpt.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.isp.backend.domain.gpt.entity.ChatGptMessage;
+import com.isp.backend.domain.gpt.entity.GptMessage;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -11,12 +11,12 @@
 @Getter
 @NoArgsConstructor
 @AllArgsConstructor
-public class ChatGptRequestDTO {
+public class GptRequestDTO {
     private String model;
 
     @JsonProperty("max_tokens")
     private Integer maxTokens;
     private Double temperature;
     private Boolean stream;
-    private List<ChatGptMessage> messages;
+    private List<GptMessage> messages;
 }

backend/src/main/java/com/isp/backend/domain/gpt/dto/ChatGptResponseDTO.java → backend/src/main/java/com/isp/backend/domain/gpt/dto/GptResponseDTO.java

@@ -1,7 +1,7 @@
 package com.isp.backend.domain.gpt.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.isp.backend.domain.gpt.entity.ChatGptMessage;
+import com.isp.backend.domain.gpt.entity.GptMessage;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -12,7 +12,7 @@
 @Getter
 @NoArgsConstructor
 @AllArgsConstructor
-public class ChatGptResponseDTO {
+public class GptResponseDTO {
     private String id;
     private String object;
     private long created;
@@ -34,7 +34,7 @@ public static class Usage {
     @Getter
     @Setter
     public static class Choice {
-        private ChatGptMessage message;
+        private GptMessage message;
         @JsonProperty("finish_reason")
         private String finishReason;
         private int index;

backend/src/main/java/com/isp/backend/domain/gpt/dto/GptScheduleRequestDto.java

@@ -0,0 +1,15 @@
+package com.isp.backend.domain.gpt.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class GptScheduleRequestDto {
+    private String destination;
+    private String purpose;
+    private String departureDate;
+    private String returnDate;
+}

backend/src/main/java/com/isp/backend/domain/gpt/dto/GptScheduleResponseDto.java

@@ -0,0 +1,13 @@
+package com.isp.backend.domain.gpt.dto;
+
+import com.isp.backend.domain.gpt.entity.GptSchedule;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class GptScheduleResponseDto {
+    private GptSchedule gptSchedule;
+}

backend/src/main/java/com/isp/backend/domain/gpt/entity/ChatGptMessage.java → backend/src/main/java/com/isp/backend/domain/gpt/entity/GptMessage.java

@@ -8,12 +8,12 @@
 
 @Data
 @NoArgsConstructor
-public class ChatGptMessage implements Serializable {
+public class GptMessage implements Serializable {
     private String role;
     private String content;
 
     @Builder
-    public ChatGptMessage(String role, String content) {
+    public GptMessage(String role, String content) {
         this.role = role;
         this.content = content;
     }

backend/src/main/java/com/isp/backend/domain/gpt/entity/GptSchedule.java

@@ -0,0 +1,18 @@
+package com.isp.backend.domain.gpt.entity;
+
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@NoArgsConstructor
+public class GptSchedule {
+    private List<GptScheduleDetail> gptScheduleDetails;
+
+    @Builder
+    public GptSchedule(List<GptScheduleDetail> gptScheduleDetails) {
+        this.gptScheduleDetails = gptScheduleDetails;
+    }
+}

backend/src/main/java/com/isp/backend/domain/gpt/entity/GptScheduleDetail.java

@@ -0,0 +1,21 @@
+package com.isp.backend.domain.gpt.entity;
+
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+@NoArgsConstructor
+public class GptScheduleDetail {
+    private LocalDateTime day;
+    private List<String> details;
+
+    @Builder
+    public GptScheduleDetail(LocalDateTime day, List<String> details) {
+        this.day = day;
+        this.details = details;
+    }
+}

backend/src/main/java/com/isp/backend/domain/gpt/mapper/GptMapper.java

@@ -0,0 +1,10 @@
+package com.isp.backend.domain.gpt.mapper;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class GptMapper {
+
+}

backend/src/main/java/com/isp/backend/domain/gpt/service/GptService.java

@@ -0,0 +1,74 @@
+package com.isp.backend.domain.gpt.service;
+
+import com.isp.backend.domain.gpt.config.GptConfig;
+import com.isp.backend.domain.gpt.dto.GptRequestDTO;
+import com.isp.backend.domain.gpt.dto.GptResponseDTO;
+import com.isp.backend.domain.gpt.dto.GptScheduleRequestDto;
+import com.isp.backend.domain.gpt.entity.GptMessage;
+import com.isp.backend.domain.gpt.mapper.GptMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.client.SimpleClientHttpRequestFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Slf4j
+@RequiredArgsConstructor
+@Service
+public class GptService {
+    private final RestTemplate restTemplate;
+    private final GptMapper gptMapper;
+
+    @Value("${api-key.chat-gpt}")
+    private String apiKey;
+
+    public HttpEntity<GptRequestDTO> buildHttpEntity(GptRequestDTO gptRequestDTO) {
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setContentType(MediaType.parseMediaType(GptConfig.MEDIA_TYPE));
+        httpHeaders.add(GptConfig.AUTHORIZATION, GptConfig.BEARER + apiKey);
+        return new HttpEntity<>(gptRequestDTO, httpHeaders);
+    }
+
+    public GptResponseDTO getResponse(HttpEntity<GptRequestDTO> chatGptRequestHttpEntity) {
+
+        SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
+        requestFactory.setConnectTimeout(60000);
+        requestFactory.setReadTimeout(60 * 1000);
+        restTemplate.setRequestFactory(requestFactory);
+
+        ResponseEntity<GptResponseDTO> responseEntity = restTemplate.postForEntity(
+                GptConfig.CHAT_URL,
+                chatGptRequestHttpEntity,
+                GptResponseDTO.class);
+
+        return responseEntity.getBody();
+    }
+
+    public GptResponseDTO askQuestion(GptScheduleRequestDto questionRequestDTO) {
+        List<GptMessage> messages = new ArrayList<>();
+        String question = questionRequestDTO.getDepartureDate();
+        messages.add(GptMessage.builder()
+                .role(GptConfig.ROLE)
+                .content(question)
+                .build());
+        return this.getResponse(
+                this.buildHttpEntity(
+                        new GptRequestDTO(
+                                GptConfig.CHAT_MODEL,
+                                GptConfig.MAX_TOKEN,
+                                GptConfig.TEMPERATURE,
+                                GptConfig.STREAM,
+                                messages
+                        )
+                )
+        );
+    }
+}