Fix Authentication API Routes to Resolve 404 Errors

app/api/auth/login/route.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from 'vitest';
+import { POST } from './route';
+
+describe('POST /api/auth/login', () => {
+  it('rejects missing credential fields with 400', async () => {
+    const request = new Request('http://localhost/api/auth/login', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ identifier: 'octocat' }),
+    });
+
+    const response = await POST(request);
+
+    expect(response.status).toBe(400);
+    const body = await response.json();
+    expect(body.error).toContain('required');
+  });
+
+  it('returns a frontend-ready success payload when identifier and password are present', async () => {
+    const request = new Request('http://localhost/api/auth/login', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ identifier: 'octocat', password: 'password123' }),
+    });
+
+    const response = await POST(request);
+
+    expect(response.status).toBe(200);
+    const body = await response.json();
+    expect(body.success).toBe(true);
+    expect(body.message).toContain('Authentication successful');
+    expect(body.user.identifier).toBe('octocat');
+  });
+});

app/api/Auth/login/route.ts → app/api/auth/login/route.ts

@@ -4,10 +4,13 @@ import { NextResponse } from 'next/server';
  * Handles credentials authentication requests for frontend login.
  * Integrates with NextAuth sessions and production backend user models.
  */
-export async function POST(request: Request) {
+export async function POST(request: Request): Promise<Response> {
   try {
     const body = await request.json();
-    const { identifier, password } = body;
+    const { identifier, password } = body as {
+      identifier?: string;
+      password?: string;
+    };
 
     if (!identifier || !password) {
       return NextResponse.json(
@@ -16,7 +19,6 @@ export async function POST(request: Request) {
       );
     }
 
-    // Frontend-ready credentials handler
     return NextResponse.json(
       {
         success: true,

app/api/auth/signup/route.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest';
+import { POST } from './route';
+
+describe('POST /api/auth/signup', () => {
+  it('rejects incomplete signup payloads with 400', async () => {
+    const request = new Request('http://localhost/api/auth/signup', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ fullName: 'Octo Cat' }),
+    });
+
+    const response = await POST(request);
+
+    expect(response.status).toBe(400);
+    const body = await response.json();
+    expect(body.error).toContain('required');
+  });
+
+  it('creates a success response body for a complete POST payload', async () => {
+    const request = new Request('http://localhost/api/auth/signup', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        fullName: 'Octo Cat',
+        email: 'octocat@example.com',
+        password: 'password123',
+      }),
+    });
+
+    const response = await POST(request);
+
+    expect(response.status).toBe(201);
+    const body = await response.json();
+    expect(body.success).toBe(true);
+    expect(body.message).toContain('Account created');
+    expect(body.user.fullName).toBe('Octo Cat');
+    expect(body.user.email).toBe('octocat@example.com');
+  });
+});

app/api/Auth/signup/route.ts → app/api/auth/signup/route.ts

@@ -4,10 +4,14 @@ import { NextResponse } from 'next/server';
  * Handles user registration requests for frontend signup.
  * Integrates with production database user creation.
  */
-export async function POST(request: Request) {
+export async function POST(request: Request): Promise<Response> {
   try {
     const body = await request.json();
-    const { fullName, email, password } = body;
+    const { fullName, email, password } = body as {
+      fullName?: string;
+      email?: string;
+      password?: string;
+    };
 
     if (!fullName || !email || !password) {
       return NextResponse.json(
@@ -16,7 +20,6 @@ export async function POST(request: Request) {
       );
     }
 
-    // Frontend-ready registration handler
     return NextResponse.json(
       {
         success: true,

middleware.ts

@@ -219,7 +219,7 @@ export const config = {
     '/api/languages/:path*',
     '/api/org/:path*',
     '/api/spotify/:path*',
-    '/api/Auth/:path*',
+    '/api/auth/:path*',
     '/api/achievements/:path*',
     '/api/ci-analytics/:path*',
     '/api/cicd/:path*',