Feat/oauth/handle error

backend/src/auth/auth.controller.ts

@@ -7,7 +7,6 @@ import {
   Post,
   Query,
   Redirect,
-  Res,
   UseGuards,
 } from '@nestjs/common';
 import {
@@ -17,7 +16,6 @@ import {
   ApiTags,
 } from '@nestjs/swagger';
 import type { User } from '@prisma/client';
-import { Response } from 'express';
 import { CurrentUser } from 'src/common/decorators/current-user.decorator';
 import { AuthService } from './auth.service';
 import { LoginDto } from './dto/login.dto';
@@ -64,7 +62,14 @@ export class AuthController {
 
   @Get('signup/oauth2/42/callback')
   @ApiOkResponse({ type: AuthEntity })
-  @Redirect('/login')
+  @Redirect()
+  async signupWithOauth42Callback(@Query('code') code: string) {
+    // only redirect to the frontend with the code in the query
+    return { url: `/callback/auth/signup/oauth2/42?code=${code}` };
+  }
+
+  @Get('signup/oauth2/42/authenticate')
+  @ApiOkResponse({ type: AuthEntity })
   async signupWithOauth42(@Query('code') code: string) {
     return this.authService.signupWithOauth42(code);
   }
@@ -79,11 +84,16 @@ export class AuthController {
 
   @Get('login/oauth2/42/callback')
   @ApiOkResponse({ type: AuthEntity })
-  loginWithOauth42(@Query('code') code: string, @Res() res: Response) {
-    return this.authService.loginWithOauth42(code).then((auth) => {
-      res.cookie('token', auth.accessToken);
-      res.redirect('/');
-    });
+  @Redirect()
+  loginWithOauth42Callback(@Query('code') code: string) {
+    // only redirect to the frontend with the code in the query
+    return { url: `/callback/auth/login/oauth2/42?code=${code}` };
+  }
+
+  @Get('login/oauth2/42/authenticate')
+  @ApiOkResponse({ type: AuthEntity })
+  loginWithOauth42(@Query('code') code: string) {
+    return this.authService.loginWithOauth42(code);
   }
 
   @Post('2fa/generate')

frontend/app/callback/auth/login/oauth2/42/route.ts

@@ -0,0 +1,34 @@
+import { setAccessToken } from "@/app/lib/session";
+import { redirect } from "next/navigation";
+
+const isValidUrl = (url: string) => {
+  return URL.canParse(url);
+};
+
+export async function GET(request: Request) {
+  if (!isValidUrl(request.url)) {
+    redirect("/login");
+  }
+  const { searchParams } = new URL(request.url);
+  const res = await fetch(
+    `${process.env.API_URL}/auth/login/oauth2/42/authenticate?${searchParams}`,
+    {
+      headers: {
+        "Content-Type": "application/json",
+      },
+    },
+  );
+  const data = await res.json();
+  if (!res.ok) {
+    console.error("Failed to authenticate", data);
+    const params = new URLSearchParams({
+      status: data.statusCode,
+      message: data.message,
+    });
+    const query = "?" + params.toString();
+    redirect("/login" + query);
+  } else {
+    setAccessToken(data.accessToken);
+    redirect("/");
+  }
+}

frontend/app/callback/auth/signup/oauth2/42/route.ts

@@ -0,0 +1,32 @@
+import { redirect } from "next/navigation";
+
+const isValidUrl = (url: string) => {
+  return URL.canParse(url);
+};
+
+export async function GET(request: Request) {
+  if (!isValidUrl(request.url)) {
+    redirect("/signup");
+  }
+  const { searchParams } = new URL(request.url);
+  const res = await fetch(
+    `${process.env.API_URL}/auth/signup/oauth2/42/authenticate?${searchParams}`,
+    {
+      headers: {
+        "Content-Type": "application/json",
+      },
+    },
+  );
+  const data = await res.json();
+  if (!res.ok) {
+    console.error("Failed to authenticate", data);
+    const params = new URLSearchParams({
+      status: data.statusCode,
+      message: data.message,
+    });
+    const query = "?" + params.toString();
+    redirect("/signup" + query);
+  } else {
+    redirect("/login");
+  }
+}

frontend/app/ui/auth/login-form.tsx

@@ -7,11 +7,56 @@ import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Separator } from "@/components/ui/separator";
-import { useRouter } from "next/navigation";
+import { toast } from "@/components/ui/use-toast";
+import { useRouter, useSearchParams } from "next/navigation";
 import { useEffect } from "react";
 import { useFormState, useFormStatus } from "react-dom";
 
+const getStatusText = (statusCode: string) => {
+  let statusText = "";
+  switch (statusCode) {
+    case "400":
+      statusText = "Bad Request";
+      break;
+    case "401":
+      statusText = "Unauthorized";
+      break;
+    case "403":
+      statusText = "Forbidden";
+      break;
+    case "404":
+      statusText = "Not Found";
+      break;
+    case "409":
+      statusText = "Conflict";
+      break;
+    case "500":
+      statusText = "Internal Server Error";
+      break;
+    default:
+      statusText = "Error";
+      break;
+  }
+  return statusText;
+};
+
+const showErrorToast = (statusCode: string, message: string) => {
+  const statusText = getStatusText(statusCode);
+  toast({
+    title: statusCode + " " + statusText,
+    description: message,
+  });
+};
+
 export default function LoginForm() {
+  const searchParams = useSearchParams();
+  const errorStatusCode = searchParams.get("status");
+  const errorMessage = searchParams.get("message");
+  useEffect(() => {
+    if (errorStatusCode && errorMessage) {
+      showErrorToast(errorStatusCode, errorMessage);
+    }
+  }, [errorStatusCode, errorMessage]);
   return (
     <>
       <Card>

frontend/app/ui/auth/signup-form.tsx

@@ -1,9 +1,59 @@
+"use client";
+
 import Form from "@/app/ui/user/create-form";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Separator } from "@/components/ui/separator";
+import { toast } from "@/components/ui/use-toast";
+import { useSearchParams } from "next/navigation";
+import { useEffect } from "react";
+
+const getStatusText = (statusCode: string) => {
+  let statusText = "";
+  switch (statusCode) {
+    case "400":
+      statusText = "Bad Request";
+      break;
+    case "401":
+      statusText = "Unauthorized";
+      break;
+    case "403":
+      statusText = "Forbidden";
+      break;
+    case "404":
+      statusText = "Not Found";
+      break;
+    case "409":
+      statusText = "Conflict";
+      break;
+    case "500":
+      statusText = "Internal Server Error";
+      break;
+    default:
+      statusText = "Error";
+      break;
+  }
+  return statusText;
+};
+
+const showErrorToast = (statusCode: string, message: string) => {
+  const statusText = getStatusText(statusCode);
+  toast({
+    title: statusCode + " " + statusText,
+    description: message,
+  });
+};
 
 export default function SignUpForm() {
+  const searchParams = useSearchParams();
+  const errorStatusCode = searchParams.get("status");
+  const errorMessage = searchParams.get("message");
+
+  useEffect(() => {
+    if (errorStatusCode && errorMessage) {
+      showErrorToast(errorStatusCode, errorMessage);
+    }
+  }, [errorStatusCode, errorMessage]);
   return (
     <Card>
       <CardHeader>