From 903f258206851eee52dcd95f61c1acaf24b186c8 Mon Sep 17 00:00:00 2001
From: ayoubessabiry <ayoubpolonia16@gmail.com>
Date: Mon, 23 Oct 2023 19:07:54 +0100
Subject: [PATCH] ADD: leaderboard

---
 backend/code/src/app.module.ts                |  2 ++
 .../src/leaderboard/dto/leaderboard.dto.ts    |  8 +++++++
 .../src/leaderboard/leaderboard.controller.ts | 22 +++++++++++++++++
 .../src/leaderboard/leaderboard.module.ts     |  9 +++++++
 .../src/leaderboard/leaderboard.service.ts    | 24 +++++++++++++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 backend/code/src/leaderboard/dto/leaderboard.dto.ts
 create mode 100644 backend/code/src/leaderboard/leaderboard.controller.ts
 create mode 100644 backend/code/src/leaderboard/leaderboard.module.ts
 create mode 100644 backend/code/src/leaderboard/leaderboard.service.ts

diff --git a/backend/code/src/app.module.ts b/backend/code/src/app.module.ts
index 6d88f2e..a141591 100644
--- a/backend/code/src/app.module.ts
+++ b/backend/code/src/app.module.ts
@@ -11,6 +11,7 @@ import { CloudinaryModule } from './cloudinary/cloudinary.module';
 import { MessagesModule } from './messages/messages.module';
 import { EventEmitterModule } from '@nestjs/event-emitter';
 import { Gateways } from './gateways/gateways.gateway';
+import { LeaderBoardModule } from './leaderboard/leaderboard.module';
 
 @Module({
   imports: [
@@ -23,6 +24,7 @@ import { Gateways } from './gateways/gateways.gateway';
     CloudinaryModule,
     MessagesModule,
     EventEmitterModule.forRoot(),
+    LeaderBoardModule,
   ],
   controllers: [AppController],
   providers: [PrismaService, Gateways],
diff --git a/backend/code/src/leaderboard/dto/leaderboard.dto.ts b/backend/code/src/leaderboard/dto/leaderboard.dto.ts
new file mode 100644
index 0000000..b4b648a
--- /dev/null
+++ b/backend/code/src/leaderboard/dto/leaderboard.dto.ts
@@ -0,0 +1,8 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class LeaderboardResponseDto {
+  @ApiProperty({ example: '60f1a7b0e1b3c2a4e8b4a1a0' })
+  userId: string;
+  @ApiProperty({ example: '3' })
+  wins: number;
+}
diff --git a/backend/code/src/leaderboard/leaderboard.controller.ts b/backend/code/src/leaderboard/leaderboard.controller.ts
new file mode 100644
index 0000000..8a3ef9e
--- /dev/null
+++ b/backend/code/src/leaderboard/leaderboard.controller.ts
@@ -0,0 +1,22 @@
+import { Controller, Get, Query, UseGuards, HttpStatus } from '@nestjs/common';
+import { AtGuard } from 'src/auth/guards/at.guard';
+import { LeaderBoardService } from './leaderboard.service';
+import { QueryOffsetDto } from 'src/friends/dto/query-ofsset-dto';
+import { ApiResponse, ApiTags } from '@nestjs/swagger';
+import { LeaderboardResponseDto } from './dto/leaderboard.dto';
+
+@ApiTags('leaderboard')
+@Controller('leaderboard')
+export class LeaderBoardController {
+  constructor(private readonly leaderBordService: LeaderBoardService) {}
+
+  @Get()
+  @ApiResponse({
+    type: LeaderboardResponseDto,
+    status: HttpStatus.OK,
+  })
+  @UseGuards(AtGuard)
+  async getLeaderBoard(@Query() { offset, limit }: QueryOffsetDto) {
+    return this.leaderBordService.getLeaderBoard(offset, limit);
+  }
+}
diff --git a/backend/code/src/leaderboard/leaderboard.module.ts b/backend/code/src/leaderboard/leaderboard.module.ts
new file mode 100644
index 0000000..69c7417
--- /dev/null
+++ b/backend/code/src/leaderboard/leaderboard.module.ts
@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { LeaderBoardController } from './leaderboard.controller';
+import { LeaderBoardService } from './leaderboard.service';
+
+@Module({
+  controllers: [LeaderBoardController],
+  providers: [LeaderBoardService],
+})
+export class LeaderBoardModule {}
diff --git a/backend/code/src/leaderboard/leaderboard.service.ts b/backend/code/src/leaderboard/leaderboard.service.ts
new file mode 100644
index 0000000..aaa2f75
--- /dev/null
+++ b/backend/code/src/leaderboard/leaderboard.service.ts
@@ -0,0 +1,24 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from 'src/prisma/prisma.service';
+
+@Injectable()
+export class LeaderBoardService {
+  constructor(private prisma: PrismaService) {}
+  async getLeaderBoard(offset: number, limit: number) {
+    const leaderboard = await this.prisma.match.groupBy({
+      skip: offset,
+      take: limit,
+      by: ['winner_id'],
+      _count: { id: true },
+      orderBy: {
+        _count: {
+          id: 'desc',
+        },
+      },
+    });
+    return leaderboard.map((user) => ({
+      userId: user.winner_id,
+      wins: user._count.id,
+    }));
+  }
+}