Merge pull request #14 from mju-likelion/feature/room-result-date

방 특정 날짜 정보 조회 API 만들기

src/api/rooms/dto/room-param.dto.ts

@@ -0,0 +1,14 @@
+import { Matches } from 'class-validator';
+
+export class FindOneRoomParamDto {
+  @Matches(/^[A-Z\d]{6}$/)
+  code: string;
+}
+
+export class GetRoomResultByDateParamDto {
+  @Matches(/^[A-Z\d]{6}$/)
+  code: string;
+
+  @Matches(/^\d{4}-\d{2}-\d{2}$/)
+  date: string;
+}

src/api/rooms/rooms.controller.ts

@@ -2,7 +2,10 @@ import { Controller, Get, Post, Body, Param } from '@nestjs/common';
 
 import { RoomsService } from './rooms.service';
 import { CreateRoomDto } from './dto/create-room.dto';
-import { GetRoomReservationParamDto } from './dto/get-room-reservation-param.dto';
+import {
+  FindOneRoomParamDto,
+  GetRoomResultByDateParamDto,
+} from './dto/room-param.dto';
 
 @Controller('rooms')
 export class RoomsController {
@@ -14,12 +17,17 @@ export class RoomsController {
   }
 
   @Get(':code')
-  findOne(@Param() { code }: GetRoomReservationParamDto) {
+  findOne(@Param() { code }: FindOneRoomParamDto) {
     return this.roomsService.findOne(code);
   }
 
   @Get(':code/result')
-  getRoomResult(@Param('code') code: string) {
-    return this.roomsService.getRoomResult(code);
+  getResult(@Param() { code }: FindOneRoomParamDto) {
+    return this.roomsService.getResult(code);
+  }
+
+  @Get(':code/result/:date')
+  getResultByDate(@Param() { code, date }: GetRoomResultByDateParamDto) {
+    return this.roomsService.getResultByDate(code, date);
   }
 }

src/api/rooms/rooms.service.ts

@@ -21,6 +21,21 @@ export class RoomsService {
     return new Date(stringDate);
   }
 
+  /**
+   * @example filterUsersInDate(users, '2023-08-23')
+   */
+  private filterUsersInDate(
+    users: { username: string; enableTimes: string[] }[],
+    date: string
+  ) {
+    return users.filter(user => {
+      const enableTimes = user.enableTimes;
+      const enableDates = enableTimes.map(time => time.split(' ')[0]);
+
+      return enableDates.includes(date);
+    });
+  }
+
   /**
    * 이 부분 상세 조건들은 아래 슬랙을 참고하시면 좋습니다
    * @see {@link https://www.notion.so/likelion-11th/6-6-8fdfd4c7268e4f70bd232dcee5078aab?pvs=4#ca12b4cd60904410bbb83549e748f1cd | Notion}
@@ -49,7 +64,7 @@ export class RoomsService {
     return room;
   }
 
-  async getRoomResult(code: string) {
+  async getResult(code: string) {
     const room = await this.prismaService.room.findUnique({
       where: { code },
       include: {
@@ -98,6 +113,64 @@ export class RoomsService {
     };
   }
 
+  async getResultByDate(code: string, date: string) {
+    const room = await this.prismaService.room.findUnique({
+      where: { code },
+      include: {
+        users: {
+          select: {
+            username: true,
+            enableTimes: true,
+          },
+        },
+      },
+    });
+
+    const { users } = room;
+    const filteredUsersInDate = this.filterUsersInDate(users, date);
+    const { dateOnly, startTime, endTime } = room;
+
+    // 날짜만 선택하는 방이면
+    if (room.dateOnly) {
+      return {
+        code,
+        selectedDate: date,
+        dateOnly,
+        votingUsers: filteredUsersInDate.map(user => user.username),
+      };
+    }
+
+    // 모두가 선택한 시간들을 골라보기
+    const selectedTimes = filteredUsersInDate
+      .map(user => user.enableTimes)
+      .flat()
+      .map(time => time.split(' ')[1])
+      .sort()
+      .reduce((acc, cur) => {
+        if (acc[cur]) {
+          acc[cur] += 1;
+        } else {
+          acc[cur] = 1;
+        }
+        return acc;
+      }, {});
+    // 그 중 모두가 선택한 시간만 선택
+    const everyoneSelectedTimes = Object.keys(selectedTimes).filter(
+      time => selectedTimes[time] === filteredUsersInDate.length
+    );
+
+    // 시간도 선택하는 방이면
+    return {
+      code,
+      selectedDate: date,
+      dateOnly,
+      startTime,
+      endTime,
+      votingUsers: filteredUsersInDate.map(user => user.username),
+      everyoneSelectedTimes,
+    };
+  }
+
   validateDates(createRoomDto: CreateRoomDto) {
     const errors = [];