feat: Add Discord and JWT authentication guards

- Added `DiscordAuthGuard` to handle Discord authentication
- Added `JwtAuthGuard` to handle JWT authentication

These guards are used in the `auth.controller.ts` and `user.controller.ts` files to protect routes that require authentication.

src/auth/Guards/discord.guard.ts

@@ -0,0 +1,13 @@
+import { Injectable, UnauthorizedException } from "@nestjs/common";
+import { AuthGuard } from "@nestjs/passport";
+
+@Injectable()
+export class DiscordAuthGuard extends AuthGuard("discord") {
+	handleRequest(err, user, info, context) {
+		if (err || !user) {
+			const errorMessage = info?.message || "Authentication failed";
+			throw new UnauthorizedException(errorMessage);
+		}
+		return user;
+	}
+}

src/auth/Guards/jwt.guard.ts

@@ -0,0 +1,5 @@
+import { Injectable } from "@nestjs/common";
+import { AuthGuard } from "@nestjs/passport";
+
+@Injectable()
+export class JwtAuthGuard extends AuthGuard("jwt") {}

src/auth/auth.controller.ts

@@ -1,6 +1,7 @@
-import { Controller, Get, Req, Res, UseGuards } from "@nestjs/common";
-import { AuthGuard } from "@nestjs/passport";
+import { Controller, Get, Query, Req, Res, UseGuards } from "@nestjs/common";
 import { URLSearchParams } from "node:url";
+import { JwtAuthGuard } from "./Guards/jwt.guard";
+import { DiscordAuthGuard } from "./Guards/discord.guard";
 
 @Controller("auth")
 export class AuthController {
@@ -21,7 +22,7 @@ export class AuthController {
 	}
 
 	@Get("discord/callback")
-	@UseGuards(AuthGuard("discord"))
+	@UseGuards(DiscordAuthGuard)
 	CallbackDiscord(@Req() req, @Res() res) {
 		const { user } = req;
 
@@ -29,7 +30,7 @@ export class AuthController {
 	}
 
 	@Get("profile")
-	@UseGuards(AuthGuard("jwt"))
+	@UseGuards(JwtAuthGuard)
 	Profile(@Req() req) {
 		return req.user;
 	}

src/user/user.controller.ts

@@ -1,11 +1,19 @@
-import { Body, Controller, Delete, Get, Param, Post, UseGuards } from "@nestjs/common";
-import { AuthGuard } from "@nestjs/passport";
-
-import { CreateUserInput } from "./dto/create-user.input";
+import {
+	Body,
+	Controller,
+	Delete,
+	Get,
+	Param,
+	Post,
+	UseGuards,
+} from "@nestjs/common";
 import { UserService } from "./user.service";
 
+import { JwtAuthGuard } from "src/auth/Guards/jwt.guard";
+import { CreateUserInput } from "./dto/create-user.input";
+
 @Controller("user")
-@UseGuards(AuthGuard("jwt"))
+@UseGuards(JwtAuthGuard)
 export class UserController {
 	constructor(private readonly userService: UserService) {}
 
@@ -14,13 +22,13 @@ export class UserController {
 		return this.userService.create(createUserInput);
 	}
 
-    @Get()
-    findAll() {
-        return this.userService.findAll();
-    }
+	@Get()
+	findAll() {
+		return this.userService.findAll();
+	}
 
-    @Delete(":id")
-    removeUser(@Param("id") id: string) {
-        return this.userService.remove(id);
-    }
+	@Delete(":id")
+	removeUser(@Param("id") id: string) {
+		return this.userService.remove(id);
+	}
 }