feat(be): create prompt result insertion API (#72)

* feat: create prompt table

Co-authored-by: shl0501 <[email protected]>
Co-authored-by: 유영재 <[email protected]>
Co-authored-by: Choi Jeongmin <[email protected]>

* feat: create history insert API

Co-authored-by: shl0501 <[email protected]>
Co-authored-by: 유영재 <[email protected]>
Co-authored-by: Choi Jeongmin <[email protected]>

* fix: remove ai test file

---------

Co-authored-by: shl0501 <[email protected]>
Co-authored-by: 유영재 <[email protected]>
Co-authored-by: Choi Jeongmin <[email protected]>

apps/server/prisma/migrations/20250210082219_prompt/migration.sql

@@ -0,0 +1,21 @@
+-- CreateTable
+CREATE TABLE "Prompt" (
+    "name" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+
+    CONSTRAINT "Prompt_pkey" PRIMARY KEY ("name")
+);
+
+-- CreateTable
+CREATE TABLE "PromptHistory" (
+    "history_id" SERIAL NOT NULL,
+    "before" TEXT NOT NULL,
+    "after" TEXT NOT NULL,
+    "prompt_name" TEXT NOT NULL,
+    "result" TEXT NOT NULL,
+
+    CONSTRAINT "PromptHistory_pkey" PRIMARY KEY ("history_id")
+);
+
+-- AddForeignKey
+ALTER TABLE "PromptHistory" ADD CONSTRAINT "PromptHistory_prompt_name_fkey" FOREIGN KEY ("prompt_name") REFERENCES "Prompt"("name") ON DELETE RESTRICT ON UPDATE CASCADE;

apps/server/prisma/migrations/20250210083749_update_history_column_name/migration.sql

@@ -0,0 +1,14 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `after` on the `PromptHistory` table. All the data in the column will be lost.
+  - You are about to drop the column `before` on the `PromptHistory` table. All the data in the column will be lost.
+  - Added the required column `request` to the `PromptHistory` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `response` to the `PromptHistory` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "PromptHistory" DROP COLUMN "after",
+DROP COLUMN "before",
+ADD COLUMN     "request" TEXT NOT NULL,
+ADD COLUMN     "response" TEXT NOT NULL;

apps/server/prisma/schema.prisma

@@ -136,3 +136,20 @@ model Chatting {
   @@index([sessionId])
   @@index([sessionId, chattingId(Sort.desc)])
 }
+
+model Prompt {
+  name    String  @id
+  content String
+
+  PromptHistory PromptHistory[] @relation("promptHistories")
+}
+
+model PromptHistory {
+  historyId   Int     @id @default(autoincrement()) @map("history_id")
+  request     String  
+  response    String
+  promptName  String  @map("prompt_name")
+  result      String
+
+  prompt      Prompt  @relation("promptHistories", fields: [promptName], references: [name])
+}

apps/server/src/ai/ai.controller.ts

@@ -2,12 +2,15 @@ import { Body, Controller, Post, UseGuards } from '@nestjs/common';
 import { ApiBody } from '@nestjs/swagger';
 
 import { AiService } from './ai.service';
+import { CreateHistoryDto } from './dto/create-history.dto';
 import { ImproveQuestionDto } from './dto/improve-question.dto';
 import { ShortenQuestionDto } from './dto/shorten-question.dto';
+import { CreateHistorySwagger } from './swagger/create-history.swagger';
 import { ImproveQuestionSwagger } from './swagger/improve-question.swagger';
 import { ShortenQuestionSwagger } from './swagger/shorten-question.swagger';
 
 import { SessionTokenValidationGuard } from '@common/guards/session-token-validation.guard';
+
 @Controller('ai')
 export class AiController {
   constructor(private readonly aiService: AiService) {}
@@ -31,4 +34,11 @@ export class AiController {
     const result = { question: await this.aiService.requestShortenQuestion(userContent) };
     return { result };
   }
+
+  @Post('history')
+  @CreateHistorySwagger()
+  @ApiBody({ type: CreateHistoryDto })
+  public createHistory(@Body() createHistoryDto: CreateHistoryDto) {
+    this.aiService.createHistory(createHistoryDto);
+  }
 }

apps/server/src/ai/ai.module.ts

@@ -4,9 +4,10 @@ import { AiController } from './ai.controller';
 import { AiService } from './ai.service';
 
 import { SessionTokenModule } from '@common/guards/session-token.module';
+import { PrismaModule } from '@prisma-alias/prisma.module';
 
 @Module({
-  imports: [SessionTokenModule],
+  imports: [PrismaModule, SessionTokenModule],
   providers: [AiService],
   controllers: [AiController],
 })

apps/server/src/ai/ai.service.ts

@@ -1,6 +1,8 @@
 import { Injectable } from '@nestjs/common';
 
-import { prompt } from '@ai/promt.constant';
+import { CreateHistoryDto } from './dto/create-history.dto';
+
+import { PrismaService } from '@prisma-alias/prisma.service';
 
 interface ClovaApiResponse {
   status: {
@@ -28,17 +30,25 @@ export class AiService {
   private readonly CLOVA_API_URL: string;
   private readonly API_KEY: string;
 
-  constructor() {
+  constructor(private readonly prisma: PrismaService) {
     this.CLOVA_API_URL = process.env.CLOVA_API_URL;
     this.API_KEY = 'Bearer ' + process.env.CLOVA_API_KEY;
   }
 
   public async requestImproveQuestion(userContent: string) {
-    return await this.requestAIResponse(userContent, prompt.improveQuestion);
+    const prompt = await this.prisma.prompt.findUnique({ where: { name: 'IMPROVE_QUESTION' } });
+    return await this.requestAIResponse(userContent, prompt.content);
   }
 
   public async requestShortenQuestion(userContent: string) {
-    return await this.requestAIResponse(userContent, prompt.shortenQuestion);
+    const prompt = await this.prisma.prompt.findUnique({ where: { name: 'SHORTEN_QUESTION' } });
+    return await this.requestAIResponse(userContent, prompt.content);
+  }
+
+  public async createHistory({ request, response, promptName, result }: CreateHistoryDto) {
+    await this.prisma.promptHistory.create({
+      data: { request, response, promptName, result },
+    });
   }
 
   private async requestAIResponse(userContent: string, prompt: string) {

apps/server/src/ai/dto/create-history.dto.ts

@@ -0,0 +1,44 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsIn, IsNotEmpty, IsString } from 'class-validator';
+
+export class CreateHistoryDto {
+  @ApiProperty({
+    example: 'IMPROVE_QUESTION',
+    description: '프롬프트 종류',
+    required: true,
+  })
+  @IsIn(['IMPROVE_QUESTION', 'SHORTEN_QUESTION'], {
+    message: 'promptName은 IMPROVE_QUESTION 또는 SHORTEN_QUESTION이어야 합니다.',
+  })
+  @IsNotEmpty()
+  promptName: string;
+
+  @ApiProperty({
+    example: '호날두 VS 메시',
+    description: 'AI 수정 전의 원본',
+    required: true,
+  })
+  @IsString()
+  @IsNotEmpty()
+  request: string;
+
+  @ApiProperty({
+    example: '호날두와 메시 중 누가 더 뛰어난 축구선수인가요?',
+    description: 'AI 수정 후의 결과',
+    required: true,
+  })
+  @IsString()
+  @IsNotEmpty()
+  response: string;
+
+  @ApiProperty({
+    example: 'ACCEPT',
+    description: '사용자 반응',
+    required: true,
+  })
+  @IsIn(['ACCEPT', 'REJECT'], {
+    message: 'result는 ACCEPT 또는 REJECT이어야 합니다.',
+  })
+  @IsNotEmpty()
+  result: string;
+}

apps/server/src/ai/swagger/create-history.swagger.ts

@@ -0,0 +1,11 @@
+import { applyDecorators } from '@nestjs/common';
+import { ApiOperation, ApiResponse } from '@nestjs/swagger';
+
+export const CreateHistorySwagger = () =>
+  applyDecorators(
+    ApiOperation({ summary: 'AI 제안을 사용자가 accept/rejet했는지를 저장합니다.' }),
+    ApiResponse({
+      status: 201,
+      description: 'history 저장 성공',
+    }),
+  );