feat(be): implement contest participant standings

backend/apps/client/src/contest/contest.service.spec.ts

@@ -187,6 +187,29 @@ const record: ContestRecord = {
   createTime: new Date(),
   updateTime: new Date()
 }
+const sortedContestRecordsWithUserDetail = [
+  {
+    user: {
+      id: 13,
+      username: 'user10'
+    },
+    acceptedProblemNum: 13
+  },
+  {
+    user: {
+      id: 12,
+      username: 'user09'
+    },
+    acceptedProblemNum: 12
+  },
+  {
+    user: {
+      id: 11,
+      username: 'user08'
+    },
+    acceptedProblemNum: 11
+  }
+]
 
 const mockPrismaService = {
   contest: {
@@ -330,10 +353,14 @@ describe('ContestService', () => {
 
     it('should return contest', async () => {
       mockPrismaService.contest.findUniqueOrThrow.resolves(contestDetail)
-
-      expect(await service.getContest(groupId, contestId)).to.deep.equal(
-        contestDetail
+      mockPrismaService.contestRecord.findMany.resolves(
+        sortedContestRecordsWithUserDetail
       )
+
+      expect(await service.getContest(groupId, contestId)).to.deep.equal({
+        ...contestDetail,
+        rankings: sortedContestRecordsWithUserDetail
+      })
     })
   })
 

backend/apps/client/src/contest/contest.service.ts

@@ -214,10 +214,7 @@ export class ContestService {
     return upcomingContest
   }
 
-  async getContest(
-    id: number,
-    groupId = OPEN_SPACE_ID
-  ): Promise<Partial<Contest>> {
+  async getContest(id: number, groupId = OPEN_SPACE_ID) {
     const contest = await this.prisma.contest.findUniqueOrThrow({
       where: {
         id,
@@ -232,8 +229,31 @@ export class ContestService {
         description: true
       }
     })
+    // get contest participants ranking using ContestRecord
+    const sortedContestRecordsWithUserDetail =
+      await this.prisma.contestRecord.findMany({
+        where: {
+          contestId: id
+        },
+        select: {
+          user: {
+            select: {
+              id: true,
+              username: true
+            }
+          },
+          acceptedProblemNum: true
+        },
+        orderBy: {
+          acceptedProblemNum: 'desc'
+        }
+      })
 
-    return contest
+    // combine contest and sortedContestRecordsWithUserDetail
+    return {
+      ...contest,
+      rankings: sortedContestRecordsWithUserDetail
+    }
   }
 
   async createContestRecord(

backend/prisma/seed.ts

@@ -1,4 +1,4 @@
 import {
   PrismaClient,
   Role,
   Level,
@@ -13,7 +13,8 @@
   type Submission,
   type ProblemTestcase,
   type Announcement,
-  type CodeDraft
+  type CodeDraft,
+  ContestRecord
 } from '@prisma/client'
 import { hash } from 'argon2'
 import { readFile } from 'fs/promises'
@@ -1562,6 +1563,30 @@
   return codeDrafts
 }
 
+const createContestRecords = async () => {
+  const contestRecords: ContestRecord[] = []
+
+  // group 1 users
+  const group1Users = await prisma.userGroup.findMany({
+    where: {
+      groupId: 1
+    }
+  })
+  for (const user of group1Users) {
+    const contestRecord = await prisma.contestRecord.create({
+      data: {
+        userId: user.userId,
+        contestId: 1,
+        acceptedProblemNum: user.userId,
+        totalPenalty: 0
+      }
+    })
+    contestRecords.push(contestRecord)
+  }
+
+  return contestRecords
+}
+
 const main = async () => {
   await createUsers()
   await createGroups()
@@ -1572,6 +1597,7 @@
   await createSubmissions()
   await createAnnouncements()
   await createCodeDrafts()
+  await createContestRecords()
 }
 
 main()

collection/client/Contest/Get contest by ID/Succeed.bru

@@ -5,7 +5,7 @@ meta {
 }
 
 get {
-  url: {{baseUrl}}/contest/13
+  url: {{baseUrl}}/contest/5?groupId=2
   body: none
   auth: none
 }
@@ -24,15 +24,18 @@ assert {
   res("group.groupName"): isString
   res("description"): isString
   res("_count.contestRecord"): isNumber
+  res("rankings[0].user.id"): isNumber
+  res("rankings[0].user.username"): isString
+  res("rankings[0].acceptedProblemNum"): isNumber
 }
 
 docs {
   # Get Contest by ID
-  
-  하나의 대회 정보를 가져옵니다.
-  
+
+  하나의 대회 정보와 Contest 참여자 정보를 가져옵니다.
+
   ## Query
-  
+
   | 이름 | 타입 | 설명 |
   |-----|-----|-----|
   |groupId|Integer|대회가 속한 Group ID|